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<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel"/>
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  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel"/>
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel"/>
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:label id="lab_currency_CHF_019b46bd-0715-78f6-a0cd-de0724937fab_terseLabel_en-US" xlink:label="lab_currency_CHF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Swiss francs</link:label>
    <link:label id="lab_currency_CHF_label_en-US" xlink:label="lab_currency_CHF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Switzerland, Francs</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_currency_CHF" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_CHF"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_currency_CHF" xlink:to="lab_currency_CHF" xlink:type="arc" order="1"/>
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    <link:label id="lab_srt_RestatementAxis_label_en-US" xlink:label="lab_srt_RestatementAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revision of Prior Period [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementAxis" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RestatementAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RestatementAxis" xlink:to="lab_srt_RestatementAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_RestrictedCashCollateralFinancingTransactions_019b46bd-0684-72ef-97d3-6bcbc7c14b0b_terseLabel_en-US" xlink:label="lab_ck0000932782_RestrictedCashCollateralFinancingTransactions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted cash as collateral for financing transactions</link:label>
    <link:label id="lab_ck0000932782_RestrictedCashCollateralFinancingTransactions_label_en-US" xlink:label="lab_ck0000932782_RestrictedCashCollateralFinancingTransactions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Cash, Collateral, Financing Transactions</link:label>
    <link:label id="lab_ck0000932782_RestrictedCashCollateralFinancingTransactions_documentation_en-US" xlink:label="lab_ck0000932782_RestrictedCashCollateralFinancingTransactions" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restricted Cash, Collateral, Financing Transactions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RestrictedCashCollateralFinancingTransactions" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RestrictedCashCollateralFinancingTransactions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_RestrictedCashCollateralFinancingTransactions" xlink:to="lab_ck0000932782_RestrictedCashCollateralFinancingTransactions" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfContingentLiabilitiesLineItems_019b46bd-05e4-759a-8e2c-a17a0482273a_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfContingentLiabilitiesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of contingent liabilities [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfContingentLiabilitiesLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfContingentLiabilitiesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of contingent liabilities [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfContingentLiabilitiesLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfContingentLiabilitiesLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfContingentLiabilitiesLineItems" xlink:to="lab_ifrs-full_DisclosureOfContingentLiabilitiesLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FixedRateJapaneseYenMember_019b46bd-0684-75a8-a620-961c5439ee11_terseLabel_en-US" xlink:label="lab_ck0000932782_FixedRateJapaneseYenMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed rate (Japanese yen)</link:label>
    <link:label id="lab_ck0000932782_FixedRateJapaneseYenMember_label_en-US" xlink:label="lab_ck0000932782_FixedRateJapaneseYenMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed rate (Japanese yen) [member]</link:label>
    <link:label id="lab_ck0000932782_FixedRateJapaneseYenMember_documentation_en-US" xlink:label="lab_ck0000932782_FixedRateJapaneseYenMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed rate (Japanese yen).</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FixedRateJapaneseYenMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FixedRateJapaneseYenMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FixedRateJapaneseYenMember" xlink:to="lab_ck0000932782_FixedRateJapaneseYenMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities_019b46bd-053d-7f71-a011-d055909bf152_negatedLabel_en-US" xlink:label="lab_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Acquisition of wells, pipelines, properties, plant and equipment</link:label>
    <link:label id="lab_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities_label_en-US" xlink:label="lab_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Purchase of property, plant and equipment, classified as investing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:to="lab_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_RevolvingCreditFacility_019b46bd-0715-7dfe-9082-17a802c44b33_terseLabel_en-US" xlink:label="lab_ck0000932782_RevolvingCreditFacility" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving credit facility amount</link:label>
    <link:label id="lab_ck0000932782_RevolvingCreditFacility_label_en-US" xlink:label="lab_ck0000932782_RevolvingCreditFacility" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revolving Credit Facility</link:label>
    <link:label id="lab_ck0000932782_RevolvingCreditFacility_documentation_en-US" xlink:label="lab_ck0000932782_RevolvingCreditFacility" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Revolving credit facility.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RevolvingCreditFacility" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RevolvingCreditFacility"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_RevolvingCreditFacility" xlink:to="lab_ck0000932782_RevolvingCreditFacility" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BlockTwentyNineMember_019b46bd-0460-7c7f-bbbf-ebf94fa02d9f_terseLabel_en-US" xlink:label="lab_ck0000932782_BlockTwentyNineMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Block 29</link:label>
    <link:label id="lab_ck0000932782_BlockTwentyNineMember_label_en-US" xlink:label="lab_ck0000932782_BlockTwentyNineMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Block twenty nine [member]</link:label>
    <link:label id="lab_ck0000932782_BlockTwentyNineMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockTwentyNineMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block twenty nine.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockTwentyNineMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockTwentyNineMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BlockTwentyNineMember" xlink:to="lab_ck0000932782_BlockTwentyNineMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityFileNumber_019b46bd-0684-7805-89cf-6316e3fa1218_terseLabel_en-US" xlink:label="lab_dei_EntityFileNumber" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity File Number</link:label>
    <link:label id="lab_dei_EntityFileNumber_label_en-US" xlink:label="lab_dei_EntityFileNumber" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity File Number</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityFileNumber" xlink:to="lab_dei_EntityFileNumber" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfSupplementalStatementOfIncomeExplanatory_019b46bd-045f-7322-bcd2-4e907b632942_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementalStatementOfIncomeExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Supplemental Statement of Comprehensive Income</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfSupplementalStatementOfIncomeExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementalStatementOfIncomeExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of supplemental statement of income explanatory [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfSupplementalStatementOfIncomeExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementalStatementOfIncomeExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The disclosure of supplemental statement of income.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfSupplementalStatementOfIncomeExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfSupplementalStatementOfIncomeExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfSupplementalStatementOfIncomeExplanatory" xlink:to="lab_ck0000932782_DisclosureOfSupplementalStatementOfIncomeExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NinetyDaysSOFRPlus454BasisPointMember_019b46bd-0715-773a-b11a-e18b42d10b17_terseLabel_en-US" xlink:label="lab_ck0000932782_NinetyDaysSOFRPlus454BasisPointMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ninety Days SOFR Plus 454 Basis Point</link:label>
    <link:label id="lab_ck0000932782_NinetyDaysSOFRPlus454BasisPointMember_label_en-US" xlink:label="lab_ck0000932782_NinetyDaysSOFRPlus454BasisPointMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ninety Days SOFR Plus 454 Basis Point [Member]</link:label>
    <link:label id="lab_ck0000932782_NinetyDaysSOFRPlus454BasisPointMember_documentation_en-US" xlink:label="lab_ck0000932782_NinetyDaysSOFRPlus454BasisPointMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ninety Days SOFR Plus 454 Basis Point</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NinetyDaysSOFRPlus454BasisPointMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NinetyDaysSOFRPlus454BasisPointMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NinetyDaysSOFRPlus454BasisPointMember" xlink:to="lab_ck0000932782_NinetyDaysSOFRPlus454BasisPointMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProvisionsForEnvironmentalCostsCancellation_019b46bd-053c-74d8-b8c9-34043b746fc2_negatedLabel_en-US" xlink:label="lab_ck0000932782_ProvisionsForEnvironmentalCostsCancellation" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Cancellation against expenses</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForEnvironmentalCostsCancellation_label_en-US" xlink:label="lab_ck0000932782_ProvisionsForEnvironmentalCostsCancellation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provisions For Environmental Costs Cancellation</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForEnvironmentalCostsCancellation_documentation_en-US" xlink:label="lab_ck0000932782_ProvisionsForEnvironmentalCostsCancellation" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Provisions for environmental costs cancellation</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProvisionsForEnvironmentalCostsCancellation" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProvisionsForEnvironmentalCostsCancellation"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProvisionsForEnvironmentalCostsCancellation" xlink:to="lab_ck0000932782_ProvisionsForEnvironmentalCostsCancellation" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DeferredTaxExpenseIncome_019b46bd-0715-7fd3-9f55-01e7cc872cb1_terseLabel_en-US" xlink:label="lab_ifrs-full_DeferredTaxExpenseIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred income tax</link:label>
    <link:label id="lab_ifrs-full_DeferredTaxExpenseIncome_label_en-US" xlink:label="lab_ifrs-full_DeferredTaxExpenseIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred tax expense (income)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DeferredTaxExpenseIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DeferredTaxExpenseIncome"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DeferredTaxExpenseIncome" xlink:to="lab_ifrs-full_DeferredTaxExpenseIncome" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory_019b46bd-05e4-7a4a-b0b5-05aa740db3e3_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Intangible Assets, Net are Wells Unassigned to a Reserve</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about intangible assets [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfDetailedInformationAboutIntangibleAssetsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LevelsOfFairValueHierarchyDomain_019b46bd-053c-794d-9d9b-4b3e1c465886_terseLabel_en-US" xlink:label="lab_ifrs-full_LevelsOfFairValueHierarchyDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Levels of fair value hierarchy</link:label>
    <link:label id="lab_ifrs-full_LevelsOfFairValueHierarchyDomain_label_en-US" xlink:label="lab_ifrs-full_LevelsOfFairValueHierarchyDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Levels of fair value hierarchy [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LevelsOfFairValueHierarchyDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LevelsOfFairValueHierarchyDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LevelsOfFairValueHierarchyDomain" xlink:to="lab_ifrs-full_LevelsOfFairValueHierarchyDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfGovernmentContributionsLineItems_019b46bd-05e4-7e89-829f-35a0b33baaff_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfGovernmentContributionsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of government contributions [line item]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfGovernmentContributionsLineItems_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfGovernmentContributionsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Government Contributions [Line Items]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfGovernmentContributionsLineItems_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfGovernmentContributionsLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Government Contributions [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfGovernmentContributionsLineItems" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfGovernmentContributionsLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfGovernmentContributionsLineItems" xlink:to="lab_ck0000932782_DisclosureOfGovernmentContributionsLineItems" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_DisclosureOfCostAndExpensesByNatureExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfCostAndExpensesByNatureExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of cost and expenses by nature [text block]</link:label>
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    <link:label id="lab_ck0000932782_DAndSPetroleumSA.deCVMember_documentation_en-US" xlink:label="lab_ck0000932782_DAndSPetroleumSA.deCVMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">D&amp;S Petroleum S.A. de C.V.</link:label>
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    <link:label id="lab_ck0000932782_SUSMember_documentation_en-US" xlink:label="lab_ck0000932782_SUSMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">SUS</link:label>
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    <link:label id="lab_ck0000932782_PlegadoPerdidoBlockFiveMember_documentation_en-US" xlink:label="lab_ck0000932782_PlegadoPerdidoBlockFiveMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Plegado Perdido block five.</link:label>
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    <link:label id="lab_ck0000932782_RevenueFromDomesticSalesAndComplementaryIncentives_label_en-US" xlink:label="lab_ck0000932782_RevenueFromDomesticSalesAndComplementaryIncentives" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue From Domestic Sales and Complementary Incentives</link:label>
    <link:label id="lab_ck0000932782_RevenueFromDomesticSalesAndComplementaryIncentives_documentation_en-US" xlink:label="lab_ck0000932782_RevenueFromDomesticSalesAndComplementaryIncentives" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Revenue From Domestic Sales and Complementary Incentives</link:label>
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    <link:label id="lab_ck0000932782_PercentageOfIncreaseOfDFIsAndDebtPortfolioToExchangeRates_label_en-US" xlink:label="lab_ck0000932782_PercentageOfIncreaseOfDFIsAndDebtPortfolioToExchangeRates" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage of increase of DFIs and debt portfolio to exchange rates</link:label>
    <link:label id="lab_ck0000932782_PercentageOfIncreaseOfDFIsAndDebtPortfolioToExchangeRates_documentation_en-US" xlink:label="lab_ck0000932782_PercentageOfIncreaseOfDFIsAndDebtPortfolioToExchangeRates" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of increase of DFIs and debt portfolio to exchange rates.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PercentageOfIncreaseOfDFIsAndDebtPortfolioToExchangeRates" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PercentageOfIncreaseOfDFIsAndDebtPortfolioToExchangeRates"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PercentageOfIncreaseOfDFIsAndDebtPortfolioToExchangeRates" xlink:to="lab_ck0000932782_PercentageOfIncreaseOfDFIsAndDebtPortfolioToExchangeRates" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_LesseeRenegotiationOptionTerms_label_en-US" xlink:label="lab_ck0000932782_LesseeRenegotiationOptionTerms" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Renegotiation Option, Terms</link:label>
    <link:label id="lab_ck0000932782_LesseeRenegotiationOptionTerms_documentation_en-US" xlink:label="lab_ck0000932782_LesseeRenegotiationOptionTerms" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee, Renegotiation Option, Terms</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LesseeRenegotiationOptionTerms" xlink:to="lab_ck0000932782_LesseeRenegotiationOptionTerms" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_ProductionCosts1_label_en-US" xlink:label="lab_ck0000932782_ProductionCosts1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Production costs 1</link:label>
    <link:label id="lab_ck0000932782_ProductionCosts1_documentation_en-US" xlink:label="lab_ck0000932782_ProductionCosts1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Production costs.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProductionCosts1" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProductionCosts1"/>
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    <link:label id="lab_ck0000932782_TaxRegimeApplicableToContractsMember_019b46bd-053c-76e8-a82f-ba045595ec29_terseLabel_en-US" xlink:label="lab_ck0000932782_TaxRegimeApplicableToContractsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tax regime applicable to contracts</link:label>
    <link:label id="lab_ck0000932782_TaxRegimeApplicableToContractsMember_label_en-US" xlink:label="lab_ck0000932782_TaxRegimeApplicableToContractsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tax regime applicable to contracts [member]</link:label>
    <link:label id="lab_ck0000932782_TaxRegimeApplicableToContractsMember_documentation_en-US" xlink:label="lab_ck0000932782_TaxRegimeApplicableToContractsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tax regime applicable to contracts [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TaxRegimeApplicableToContractsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TaxRegimeApplicableToContractsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TaxRegimeApplicableToContractsMember" xlink:to="lab_ck0000932782_TaxRegimeApplicableToContractsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_StatutoryReserve_019b46bd-053c-722b-88d9-a8c6316e0082_terseLabel_en-US" xlink:label="lab_ifrs-full_StatutoryReserve" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Legal reserve</link:label>
    <link:label id="lab_ifrs-full_StatutoryReserve_label_en-US" xlink:label="lab_ifrs-full_StatutoryReserve" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statutory reserve</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatutoryReserve" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatutoryReserve"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_StatutoryReserve" xlink:to="lab_ifrs-full_StatutoryReserve" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProvedDevelopedReserves_019b46bd-0684-7318-ac11-7f78e5c2cc2a_terseLabel_en-US" xlink:label="lab_ck0000932782_ProvedDevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proved developed reserves</link:label>
    <link:label id="lab_ck0000932782_ProvedDevelopedReserves_019b46bd-0684-715e-a713-ae135a05b978_verboseLabel_en-US" xlink:label="lab_ck0000932782_ProvedDevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Proved developed reserves at December 31,</link:label>
    <link:label id="lab_ck0000932782_ProvedDevelopedReserves_label_en-US" xlink:label="lab_ck0000932782_ProvedDevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proved developed reserves</link:label>
    <link:label id="lab_ck0000932782_ProvedDevelopedReserves_documentation_en-US" xlink:label="lab_ck0000932782_ProvedDevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Proved developed reserves.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProvedDevelopedReserves" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProvedDevelopedReserves"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProvedDevelopedReserves" xlink:to="lab_ck0000932782_ProvedDevelopedReserves" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentDerivativeFinancialLiabilities_019b46bd-05e5-7001-8299-c5296ce91db3_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentDerivativeFinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative financial instruments</link:label>
    <link:label id="lab_ifrs-full_CurrentDerivativeFinancialLiabilities_label_en-US" xlink:label="lab_ifrs-full_CurrentDerivativeFinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current derivative financial liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentDerivativeFinancialLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentDerivativeFinancialLiabilities"/>
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    <link:label id="lab_ck0000932782_LandingTransportMember_019d3cd0-3f77-78d8-be49-b625a1db7d6e_terseLabel_en-US" xlink:label="lab_ck0000932782_LandingTransportMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Landing transport</link:label>
    <link:label id="lab_ck0000932782_LandingTransportMember_label_en-US" xlink:label="lab_ck0000932782_LandingTransportMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Landing transport [Member]</link:label>
    <link:label id="lab_ck0000932782_LandingTransportMember_documentation_en-US" xlink:label="lab_ck0000932782_LandingTransportMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Landing transport</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LandingTransportMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LandingTransportMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LandingTransportMember" xlink:to="lab_ck0000932782_LandingTransportMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PlantsMember_019b46bd-05e4-7b61-9f70-45806baed2a7_terseLabel_en-US" xlink:label="lab_ifrs-full_PlantsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plants</link:label>
    <link:label id="lab_ifrs-full_PlantsMember_019b46bd-05e4-7e76-b0f6-3e4312b3a3e8_verboseLabel_en-US" xlink:label="lab_ifrs-full_PlantsMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Plants</link:label>
    <link:label id="lab_ifrs-full_PlantsMember_label_en-US" xlink:label="lab_ifrs-full_PlantsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plants [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PlantsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PlantsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PlantsMember" xlink:to="lab_ifrs-full_PlantsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LossesFromFuelsSubtraction_019b46bd-053c-72f5-8530-30a12d26dba7_terseLabel_en-US" xlink:label="lab_ck0000932782_LossesFromFuelsSubtraction" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Losses from fuels subtraction</link:label>
    <link:label id="lab_ck0000932782_LossesFromFuelsSubtraction_label_en-US" xlink:label="lab_ck0000932782_LossesFromFuelsSubtraction" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Losses From Fuels Subtraction</link:label>
    <link:label id="lab_ck0000932782_LossesFromFuelsSubtraction_documentation_en-US" xlink:label="lab_ck0000932782_LossesFromFuelsSubtraction" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Losses from fuels substraction.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LossesFromFuelsSubtraction" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LossesFromFuelsSubtraction"/>
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    <link:label id="lab_ck0000932782_AmortizedCostOfBonds_019b46bd-0715-7f3f-ac5e-362a1f77994d_terseLabel_en-US" xlink:label="lab_ck0000932782_AmortizedCostOfBonds" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortized cost</link:label>
    <link:label id="lab_ck0000932782_AmortizedCostOfBonds_label_en-US" xlink:label="lab_ck0000932782_AmortizedCostOfBonds" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortized Cost of Bonds</link:label>
    <link:label id="lab_ck0000932782_AmortizedCostOfBonds_documentation_en-US" xlink:label="lab_ck0000932782_AmortizedCostOfBonds" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amortized cost of bonds.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AmortizedCostOfBonds" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AmortizedCostOfBonds"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AmortizedCostOfBonds" xlink:to="lab_ck0000932782_AmortizedCostOfBonds" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfNotesReceivablesGovernmentBondsAndOtherLongTermAssetsTextBlock_019b46bd-053c-738b-a27c-6f5c5bce2021_verboseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfNotesReceivablesGovernmentBondsAndOtherLongTermAssetsTextBlock" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Government Bonds, And Other Assets</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfNotesReceivablesGovernmentBondsAndOtherLongTermAssetsTextBlock_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfNotesReceivablesGovernmentBondsAndOtherLongTermAssetsTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Notes Receivables Government Bonds And Other Long Term Assets [Text Block]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfNotesReceivablesGovernmentBondsAndOtherLongTermAssetsTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfNotesReceivablesGovernmentBondsAndOtherLongTermAssetsTextBlock"/>
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    <link:label id="lab_ck0000932782_CertificatesOfContributionAMember_019b46bd-05e4-7218-9144-7fad7b1c9416_terseLabel_en-US" xlink:label="lab_ck0000932782_CertificatesOfContributionAMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Certificates of Contribution &#8220;A&#8221;</link:label>
    <link:label id="lab_ck0000932782_CertificatesOfContributionAMember_label_en-US" xlink:label="lab_ck0000932782_CertificatesOfContributionAMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Certificates of Contribution A [member]</link:label>
    <link:label id="lab_ck0000932782_CertificatesOfContributionAMember_documentation_en-US" xlink:label="lab_ck0000932782_CertificatesOfContributionAMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Certificates of contribution A.</link:label>
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    <link:label id="lab_ck0000932782_CrudeOilReservesMember_019b46bd-053c-7aac-943d-f3114ff8c418_terseLabel_en-US" xlink:label="lab_ck0000932782_CrudeOilReservesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Crude Oil Reserves</link:label>
    <link:label id="lab_ck0000932782_CrudeOilReservesMember_label_en-US" xlink:label="lab_ck0000932782_CrudeOilReservesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Crude Oil Reserves [member]</link:label>
    <link:label id="lab_ck0000932782_CrudeOilReservesMember_documentation_en-US" xlink:label="lab_ck0000932782_CrudeOilReservesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Crude Oil Reserves[member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CrudeOilReservesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CrudeOilReservesMember"/>
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    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NetGainLossOnDerivativesNotDesignatedAsHedgingInstrument" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NetGainLossOnDerivativesNotDesignatedAsHedgingInstrument"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NetGainLossOnDerivativesNotDesignatedAsHedgingInstrument" xlink:to="lab_ck0000932782_NetGainLossOnDerivativesNotDesignatedAsHedgingInstrument" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PesoTreasuryPortfolioMember_019b46bd-0684-76bd-8d91-5e3c5fb0c9d0_terseLabel_en-US" xlink:label="lab_ck0000932782_PesoTreasuryPortfolioMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Peso teasury portfolio</link:label>
    <link:label id="lab_ck0000932782_PesoTreasuryPortfolioMember_label_en-US" xlink:label="lab_ck0000932782_PesoTreasuryPortfolioMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Peso Treasury Portfolio [member]</link:label>
    <link:label id="lab_ck0000932782_PesoTreasuryPortfolioMember_documentation_en-US" xlink:label="lab_ck0000932782_PesoTreasuryPortfolioMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Peso treasury portfolio.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PesoTreasuryPortfolioMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PesoTreasuryPortfolioMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PesoTreasuryPortfolioMember" xlink:to="lab_ck0000932782_PesoTreasuryPortfolioMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfLongTermContractualLiabilitiesExplanatoryTextBlock_019d3d4e-718a-73e8-870a-d66df6f23087_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfLongTermContractualLiabilitiesExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-Term Contractual Liabilities</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfLongTermContractualLiabilitiesExplanatoryTextBlock_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfLongTermContractualLiabilitiesExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Long Term Contractual Liabilities Explanatory [Text Block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfLongTermContractualLiabilitiesExplanatoryTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfLongTermContractualLiabilitiesExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Long Term Contractual Liabilities Explanatory</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfLongTermContractualLiabilitiesExplanatoryTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfLongTermContractualLiabilitiesExplanatoryTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfLongTermContractualLiabilitiesExplanatoryTextBlock" xlink:to="lab_ck0000932782_DisclosureOfLongTermContractualLiabilitiesExplanatoryTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory_019b46bd-0715-7558-9e19-5753a7b234a7_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provisions</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Description of accounting policy for provisions [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory" xlink:to="lab_ifrs-full_DescriptionOfAccountingPolicyForProvisionsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LessThanOneYearMember_019b46bd-053c-7d88-9197-6bc40fb7258c_terseLabel_en-US" xlink:label="lab_ck0000932782_LessThanOneYearMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Less than 1 year</link:label>
    <link:label id="lab_ck0000932782_LessThanOneYearMember_label_en-US" xlink:label="lab_ck0000932782_LessThanOneYearMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Less than one year [member]</link:label>
    <link:label id="lab_ck0000932782_LessThanOneYearMember_documentation_en-US" xlink:label="lab_ck0000932782_LessThanOneYearMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Less than one year.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LessThanOneYearMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LessThanOneYearMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LessThanOneYearMember" xlink:to="lab_ck0000932782_LessThanOneYearMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ImpairmentOfBonds_019b46bd-05e4-7458-b46c-8c08d32613cf_verboseLabel_en-US" xlink:label="lab_ck0000932782_ImpairmentOfBonds" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Reversal of impairment of bonds</link:label>
    <link:label id="lab_ck0000932782_ImpairmentOfBonds_label_en-US" xlink:label="lab_ck0000932782_ImpairmentOfBonds" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impairment of Bonds</link:label>
    <link:label id="lab_ck0000932782_ImpairmentOfBonds_documentation_en-US" xlink:label="lab_ck0000932782_ImpairmentOfBonds" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Impairment of bonds.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ImpairmentOfBonds" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ImpairmentOfBonds"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ImpairmentOfBonds" xlink:to="lab_ck0000932782_ImpairmentOfBonds" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment_019b46bd-053c-7e4d-acb8-eb9ca7e98a60_negatedTerseLabel_en-US" xlink:label="lab_ck0000932782_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Reversal of impairment (impairment), net</link:label>
    <link:label id="lab_ck0000932782_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment_019b46bd-053c-7a68-b096-8318c0c9dfb7_terseLabel_en-US" xlink:label="lab_ck0000932782_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ck0000932782_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment_019b46bd-053c-7937-8fc9-2851735ea4d7_negatedLabel_en-US" xlink:label="lab_ck0000932782_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Reversal of impairment (impairment), net</link:label>
    <link:label id="lab_ck0000932782_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment_label_en-US" xlink:label="lab_ck0000932782_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impairment Loss Reversal Of Impairment Loss Recognised In Profit Or Loss Property Plant And Equipment</link:label>
    <link:label id="lab_ck0000932782_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment_documentation_en-US" xlink:label="lab_ck0000932782_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of impairment loss reversal of impairment loss recognised in profit or loss for property, plant and equipment.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:to="lab_ck0000932782_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis_019b46bd-0715-7f64-ac12-3220b836f828_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of intangible assets other than goodwill [axis]</link:label>
    <link:label id="lab_ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis_label_en-US" xlink:label="lab_ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of intangible assets other than goodwill [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis" xlink:to="lab_ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherOperatingSubsidiaryCompaniesMember_019bb525-605f-7f17-b70e-316d0d735b34_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherOperatingSubsidiaryCompaniesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Operating Subsidiary Companies</link:label>
    <link:label id="lab_ck0000932782_OtherOperatingSubsidiaryCompaniesMember_label_en-US" xlink:label="lab_ck0000932782_OtherOperatingSubsidiaryCompaniesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Operating Subsidiary Companies [Member]</link:label>
    <link:label id="lab_ck0000932782_OtherOperatingSubsidiaryCompaniesMember_documentation_en-US" xlink:label="lab_ck0000932782_OtherOperatingSubsidiaryCompaniesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Operating Subsidiary Companies</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherOperatingSubsidiaryCompaniesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherOperatingSubsidiaryCompaniesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherOperatingSubsidiaryCompaniesMember" xlink:to="lab_ck0000932782_OtherOperatingSubsidiaryCompaniesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherLongtermBenefitsMember_019b46bd-053d-7578-a5f7-c5c24540ea50_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherLongtermBenefitsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liability for other long-term benefits</link:label>
    <link:label id="lab_ck0000932782_OtherLongtermBenefitsMember_label_en-US" xlink:label="lab_ck0000932782_OtherLongtermBenefitsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Long-term Benefits [member]</link:label>
    <link:label id="lab_ck0000932782_OtherLongtermBenefitsMember_documentation_en-US" xlink:label="lab_ck0000932782_OtherLongtermBenefitsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other long-term benefits.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherLongtermBenefitsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherLongtermBenefitsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherLongtermBenefitsMember" xlink:to="lab_ck0000932782_OtherLongtermBenefitsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract_019b46bd-0684-7fc0-a8ce-6f0103d50a9a_terseLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing activities:</link:label>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract_019b46bd-0684-7a3b-b3a5-e1c262706e5b_verboseLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Financing activities:</link:label>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract_label_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash flows from (used in) financing activities [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract" xlink:to="lab_ifrs-full_CashFlowsFromUsedInFinancingActivitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LegalEntiesDomain_019b46bd-053d-718f-9c6c-da18c1e0af3c_terseLabel_en-US" xlink:label="lab_ck0000932782_LegalEntiesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Legal Enties [Domain]</link:label>
    <link:label id="lab_ck0000932782_LegalEntiesDomain_label_en-US" xlink:label="lab_ck0000932782_LegalEntiesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Legal Enties [Domain]</link:label>
    <link:label id="lab_ck0000932782_LegalEntiesDomain_documentation_en-US" xlink:label="lab_ck0000932782_LegalEntiesDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Legal Enties [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LegalEntiesDomain" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LegalEntiesDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LegalEntiesDomain" xlink:to="lab_ck0000932782_LegalEntiesDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DeferredTaxAssetsAbstract_019b46bd-053d-7548-9783-d9ceed2a14b7_terseLabel_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred DUC asset:</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxAssetsAbstract_label_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred tax assets [abstract]</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxAssetsAbstract_documentation_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred tax assets.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DeferredTaxAssetsAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DeferredTaxAssetsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DeferredTaxAssetsAbstract" xlink:to="lab_ck0000932782_DeferredTaxAssetsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued_019b46bd-05e5-7867-8512-4b32eef8378d_verboseLabel_en-US" xlink:label="lab_ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Less: current portion of Government Bonds, net of expected credit losses</link:label>
    <link:label id="lab_ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued_label_en-US" xlink:label="lab_ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current bonds issued and current portion of non-current bonds issued</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued" xlink:to="lab_ifrs-full_CurrentBondsIssuedAndCurrentPortionOfNoncurrentBondsIssued" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LandAndTransportWhitePipelinesMember_019b46bd-0715-7436-bbc3-e717bbe5433a_terseLabel_en-US" xlink:label="lab_ck0000932782_LandAndTransportWhitePipelinesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Land and transport (white pipelines)</link:label>
    <link:label id="lab_ck0000932782_LandAndTransportWhitePipelinesMember_label_en-US" xlink:label="lab_ck0000932782_LandAndTransportWhitePipelinesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Land and transport white pipelines [Member]</link:label>
    <link:label id="lab_ck0000932782_LandAndTransportWhitePipelinesMember_documentation_en-US" xlink:label="lab_ck0000932782_LandAndTransportWhitePipelinesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Land and transport white pipelines</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LandAndTransportWhitePipelinesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LandAndTransportWhitePipelinesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LandAndTransportWhitePipelinesMember" xlink:to="lab_ck0000932782_LandAndTransportWhitePipelinesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PMIHoldingsBVMember_019b46bd-0684-7818-8339-9ba4d70591e0_terseLabel_en-US" xlink:label="lab_ck0000932782_PMIHoldingsBVMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">P.M.I. Holdings, B.V.</link:label>
    <link:label id="lab_ck0000932782_PMIHoldingsBVMember_label_en-US" xlink:label="lab_ck0000932782_PMIHoldingsBVMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">P.M.I. Holdings, B.V. [member]</link:label>
    <link:label id="lab_ck0000932782_PMIHoldingsBVMember_documentation_en-US" xlink:label="lab_ck0000932782_PMIHoldingsBVMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">P.M.I. Holdings, B.V.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PMIHoldingsBVMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PMIHoldingsBVMember"/>
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    <link:label id="lab_ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsTable_019b46bd-053d-7062-bc40-a42a15379999_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of significant unobservable inputs used in fair value measurement of assets [table]</link:label>
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    <link:label id="lab_ck0000932782_FreightsMember_documentation_en-US" xlink:label="lab_ck0000932782_FreightsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Freights.</link:label>
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    <link:label id="lab_ck0000932782_RiskExpiringInTwoThousandTwentyFiveMember_documentation_en-US" xlink:label="lab_ck0000932782_RiskExpiringInTwoThousandTwentyFiveMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Risk Expiring In Two Thousand Twenty Five</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RiskExpiringInTwoThousandTwentyFiveMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RiskExpiringInTwoThousandTwentyFiveMember"/>
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    <link:label id="lab_ck0000932782_CiudadPemexGasProcessorComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_CiudadPemexGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ciudad Pemex Gas Processor Complex</link:label>
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    <link:label id="lab_ck0000932782_TsiminXuxMember_label_en-US" xlink:label="lab_ck0000932782_TsiminXuxMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tsimin Xux [Member]</link:label>
    <link:label id="lab_ck0000932782_TsiminXuxMember_documentation_en-US" xlink:label="lab_ck0000932782_TsiminXuxMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tsimin Xux.</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_srt_ParentCompanyMember" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ParentCompanyMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ParentCompanyMember" xlink:to="lab_srt_ParentCompanyMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SupplementalInformationAbstract_019b46bd-05e4-7ba8-9099-26719ae1c744_terseLabel_en-US" xlink:label="lab_ck0000932782_SupplementalInformationAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Supplemental Information [abstract]</link:label>
    <link:label id="lab_ck0000932782_SupplementalInformationAbstract_label_en-US" xlink:label="lab_ck0000932782_SupplementalInformationAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Supplemental Information [abstract]</link:label>
    <link:label id="lab_ck0000932782_SupplementalInformationAbstract_documentation_en-US" xlink:label="lab_ck0000932782_SupplementalInformationAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Supplemental information.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SupplementalInformationAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SupplementalInformationAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SupplementalInformationAbstract" xlink:to="lab_ck0000932782_SupplementalInformationAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ForwardContractMember_019b46bd-05e4-77cc-94f7-81d0d0c6e82b_terseLabel_en-US" xlink:label="lab_ifrs-full_ForwardContractMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Forwards</link:label>
    <link:label id="lab_ifrs-full_ForwardContractMember_label_en-US" xlink:label="lab_ifrs-full_ForwardContractMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Forward contract [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ForwardContractMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ForwardContractMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ForwardContractMember" xlink:to="lab_ifrs-full_ForwardContractMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SalaryAdvancesSalaryMaximumTerm_019b46bd-0715-763e-8f0c-8d9b0b5fec6f_terseLabel_en-US" xlink:label="lab_ck0000932782_SalaryAdvancesSalaryMaximumTerm" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Salary advances, maximum salary, term (in months)</link:label>
    <link:label id="lab_ck0000932782_SalaryAdvancesSalaryMaximumTerm_label_en-US" xlink:label="lab_ck0000932782_SalaryAdvancesSalaryMaximumTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Salary Advances, Salary, Maximum Term</link:label>
    <link:label id="lab_ck0000932782_SalaryAdvancesSalaryMaximumTerm_documentation_en-US" xlink:label="lab_ck0000932782_SalaryAdvancesSalaryMaximumTerm" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Monthly Salary Advance, Maximum Term</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SalaryAdvancesSalaryMaximumTerm" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SalaryAdvancesSalaryMaximumTerm"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SalaryAdvancesSalaryMaximumTerm" xlink:to="lab_ck0000932782_SalaryAdvancesSalaryMaximumTerm" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2026Member_019d3da4-4f35-763a-8395-a9b584f8b010_terseLabel_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2026Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Two, January 2026</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2026Member_label_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2026Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Two, January 2026 [Member]</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2026Member_documentation_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2026Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Two, January 2026</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2026Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2026Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2026Member" xlink:to="lab_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2026Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ShorttermBorrowings_019b46bd-0715-7269-8ccc-510a829d9483_verboseLabel_en-US" xlink:label="lab_ifrs-full_ShorttermBorrowings" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Short-term debt and current portion of long-term debt</link:label>
    <link:label id="lab_ifrs-full_ShorttermBorrowings_019b46bd-0715-7f10-a600-ff10616291e1_terseLabel_en-US" xlink:label="lab_ifrs-full_ShorttermBorrowings" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current portion of long-term debt</link:label>
    <link:label id="lab_ifrs-full_ShorttermBorrowings_label_en-US" xlink:label="lab_ifrs-full_ShorttermBorrowings" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current borrowings</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShorttermBorrowings" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShorttermBorrowings"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ShorttermBorrowings" xlink:to="lab_ifrs-full_ShorttermBorrowings" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AminusGradeMember_019b46bd-0715-7d71-af82-4027044f4abd_terseLabel_en-US" xlink:label="lab_ck0000932782_AminusGradeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">A-</link:label>
    <link:label id="lab_ck0000932782_AminusGradeMember_label_en-US" xlink:label="lab_ck0000932782_AminusGradeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">A Minus [member]</link:label>
    <link:label id="lab_ck0000932782_AminusGradeMember_documentation_en-US" xlink:label="lab_ck0000932782_AminusGradeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">A minus.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AminusGradeMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AminusGradeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AminusGradeMember" xlink:to="lab_ck0000932782_AminusGradeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PercentageOfContractBehalf_019b46bd-053c-7f91-951c-bb488883143e_terseLabel_en-US" xlink:label="lab_ck0000932782_PercentageOfContractBehalf" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of contract behalf</link:label>
    <link:label id="lab_ck0000932782_PercentageOfContractBehalf_label_en-US" xlink:label="lab_ck0000932782_PercentageOfContractBehalf" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage of contract behalf</link:label>
    <link:label id="lab_ck0000932782_PercentageOfContractBehalf_documentation_en-US" xlink:label="lab_ck0000932782_PercentageOfContractBehalf" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of contract behalf.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PercentageOfContractBehalf" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PercentageOfContractBehalf"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PercentageOfContractBehalf" xlink:to="lab_ck0000932782_PercentageOfContractBehalf" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DescriptionOfAccountingPolicyForBasisOfConsolidationExplanatory_019b46bd-05e4-739d-b33c-0a9b9161c961_terseLabel_en-US" xlink:label="lab_ck0000932782_DescriptionOfAccountingPolicyForBasisOfConsolidationExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basis of consolidation</link:label>
    <link:label id="lab_ck0000932782_DescriptionOfAccountingPolicyForBasisOfConsolidationExplanatory_label_en-US" xlink:label="lab_ck0000932782_DescriptionOfAccountingPolicyForBasisOfConsolidationExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Description of accounting policy for basis of consolidation [text block]</link:label>
    <link:label id="lab_ck0000932782_DescriptionOfAccountingPolicyForBasisOfConsolidationExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DescriptionOfAccountingPolicyForBasisOfConsolidationExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The description of the entity's accounting policy for basis of consolidation.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DescriptionOfAccountingPolicyForBasisOfConsolidationExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DescriptionOfAccountingPolicyForBasisOfConsolidationExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DescriptionOfAccountingPolicyForBasisOfConsolidationExplanatory" xlink:to="lab_ck0000932782_DescriptionOfAccountingPolicyForBasisOfConsolidationExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IncomeTaxesAndDuties_019b46bd-05e4-7ed8-a472-3863f28034ad_terseLabel_en-US" xlink:label="lab_ck0000932782_IncomeTaxesAndDuties" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income taxes and duties</link:label>
    <link:label id="lab_ck0000932782_IncomeTaxesAndDuties_019b46bd-05e4-7cc9-8ded-88a76ce25a98_totalLabel_en-US" xlink:label="lab_ck0000932782_IncomeTaxesAndDuties" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total income taxes and duties</link:label>
    <link:label id="lab_ck0000932782_IncomeTaxesAndDuties_label_en-US" xlink:label="lab_ck0000932782_IncomeTaxesAndDuties" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Taxes And Duties</link:label>
    <link:label id="lab_ck0000932782_IncomeTaxesAndDuties_documentation_en-US" xlink:label="lab_ck0000932782_IncomeTaxesAndDuties" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Income taxes and duties.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncomeTaxesAndDuties" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncomeTaxesAndDuties"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IncomeTaxesAndDuties" xlink:to="lab_ck0000932782_IncomeTaxesAndDuties" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NonAssociatedGasMember_019d8b16-90c2-78d4-96b3-415de7bc9b1f_terseLabel_en-US" xlink:label="lab_ck0000932782_NonAssociatedGasMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-associated gas</link:label>
    <link:label id="lab_ck0000932782_NonAssociatedGasMember_label_en-US" xlink:label="lab_ck0000932782_NonAssociatedGasMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non Associated Gas [Member]</link:label>
    <link:label id="lab_ck0000932782_NonAssociatedGasMember_documentation_en-US" xlink:label="lab_ck0000932782_NonAssociatedGasMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Non Associated Gas</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NonAssociatedGasMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NonAssociatedGasMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NonAssociatedGasMember" xlink:to="lab_ck0000932782_NonAssociatedGasMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfDutiesAndOthersTable_019b46bd-0715-7681-a021-e78af55489d7_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfDutiesAndOthersTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure Of Duties And Others [table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfDutiesAndOthersTable_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfDutiesAndOthersTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Duties And Others [table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfDutiesAndOthersTable_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfDutiesAndOthersTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Duties And Others [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfDutiesAndOthersTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfDutiesAndOthersTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfDutiesAndOthersTable" xlink:to="lab_ck0000932782_DisclosureOfDutiesAndOthersTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CrudeOilCondensatesMember_019b46bd-053c-73ed-be60-1980a5aac8df_terseLabel_en-US" xlink:label="lab_ck0000932782_CrudeOilCondensatesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Crude oil and Condensates</link:label>
    <link:label id="lab_ck0000932782_CrudeOilCondensatesMember_label_en-US" xlink:label="lab_ck0000932782_CrudeOilCondensatesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Crude Oil Condensates [Member]</link:label>
    <link:label id="lab_ck0000932782_CrudeOilCondensatesMember_documentation_en-US" xlink:label="lab_ck0000932782_CrudeOilCondensatesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Crude Oil Condensates [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CrudeOilCondensatesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CrudeOilCondensatesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CrudeOilCondensatesMember" xlink:to="lab_ck0000932782_CrudeOilCondensatesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_StatutoryReserveMember_019b46bd-0684-7810-a32c-ab934e4d5144_terseLabel_en-US" xlink:label="lab_ifrs-full_StatutoryReserveMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Legal reserve</link:label>
    <link:label id="lab_ifrs-full_StatutoryReserveMember_label_en-US" xlink:label="lab_ifrs-full_StatutoryReserveMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statutory reserve [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatutoryReserveMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatutoryReserveMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_StatutoryReserveMember" xlink:to="lab_ifrs-full_StatutoryReserveMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SalesPriceDeterminationPeriodMaximum_019b46bd-0715-7b2b-b18e-c27714353457_terseLabel_en-US" xlink:label="lab_ck0000932782_SalesPriceDeterminationPeriodMaximum" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sales price determination period, maximum</link:label>
    <link:label id="lab_ck0000932782_SalesPriceDeterminationPeriodMaximum_label_en-US" xlink:label="lab_ck0000932782_SalesPriceDeterminationPeriodMaximum" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sales Price Determination Period, Maximum</link:label>
    <link:label id="lab_ck0000932782_SalesPriceDeterminationPeriodMaximum_documentation_en-US" xlink:label="lab_ck0000932782_SalesPriceDeterminationPeriodMaximum" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Sales Price Determination Period, Maximum</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SalesPriceDeterminationPeriodMaximum" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SalesPriceDeterminationPeriodMaximum"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SalesPriceDeterminationPeriodMaximum" xlink:to="lab_ck0000932782_SalesPriceDeterminationPeriodMaximum" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesTable_019b46bd-0715-7175-bbd6-17b9a7752c21_terseLabel_en-US" xlink:label="lab_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in deferred tax assets and liabilities [table]</link:label>
    <link:label id="lab_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesTable_label_en-US" xlink:label="lab_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Changes in deferred tax assets and liabilities [table]</link:label>
    <link:label id="lab_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesTable_documentation_en-US" xlink:label="lab_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Changes in deferred tax assets and liabilities [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesTable" xlink:to="lab_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LegalEntiesAxis_019b46bd-05e4-7143-bc3b-7f3a6e90b821_terseLabel_en-US" xlink:label="lab_ck0000932782_LegalEntiesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Legal Enties [Axis]</link:label>
    <link:label id="lab_ck0000932782_LegalEntiesAxis_label_en-US" xlink:label="lab_ck0000932782_LegalEntiesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Legal Enties [Axis]</link:label>
    <link:label id="lab_ck0000932782_LegalEntiesAxis_documentation_en-US" xlink:label="lab_ck0000932782_LegalEntiesAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Legal enties.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LegalEntiesAxis" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LegalEntiesAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LegalEntiesAxis" xlink:to="lab_ck0000932782_LegalEntiesAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TaxExpenseIncomeAtApplicableTaxRate_019b46bd-0715-7b55-a9c4-39c2045d5564_terseLabel_en-US" xlink:label="lab_ifrs-full_TaxExpenseIncomeAtApplicableTaxRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected income tax expense</link:label>
    <link:label id="lab_ifrs-full_TaxExpenseIncomeAtApplicableTaxRate_label_en-US" xlink:label="lab_ifrs-full_TaxExpenseIncomeAtApplicableTaxRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tax expense (income) at applicable tax rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TaxExpenseIncomeAtApplicableTaxRate" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TaxExpenseIncomeAtApplicableTaxRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TaxExpenseIncomeAtApplicableTaxRate" xlink:to="lab_ifrs-full_TaxExpenseIncomeAtApplicableTaxRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FondoLaboralPemexPortfolioMember_019b46bd-053c-7f9f-8231-a57b9020b275_terseLabel_en-US" xlink:label="lab_ck0000932782_FondoLaboralPemexPortfolioMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fondo laboral pemex portfolio</link:label>
    <link:label id="lab_ck0000932782_FondoLaboralPemexPortfolioMember_label_en-US" xlink:label="lab_ck0000932782_FondoLaboralPemexPortfolioMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fondo Laboral Pemex Portfolio [member]</link:label>
    <link:label id="lab_ck0000932782_FondoLaboralPemexPortfolioMember_documentation_en-US" xlink:label="lab_ck0000932782_FondoLaboralPemexPortfolioMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fondo laboral pemex portfolio.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FondoLaboralPemexPortfolioMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FondoLaboralPemexPortfolioMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FondoLaboralPemexPortfolioMember" xlink:to="lab_ck0000932782_FondoLaboralPemexPortfolioMember" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts_019b46bd-0684-788f-9954-5bcb2d4af4f1_negatedLabel_en-US" xlink:label="lab_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Future production costs (excluding profit taxes)</link:label>
    <link:label id="lab_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts_label_en-US" xlink:label="lab_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Production Cost</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts" xlink:to="lab_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureInDetailOfTransactionsBetweenRelatedPartiesExplanatory_019b46bd-0715-7a90-9a55-061a1f20e1b5_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureInDetailOfTransactionsBetweenRelatedPartiesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Products Acquisition from Pemex Industrial Transformation</link:label>
    <link:label id="lab_ck0000932782_DisclosureInDetailOfTransactionsBetweenRelatedPartiesExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureInDetailOfTransactionsBetweenRelatedPartiesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure in detail of transactions between related parties [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureInDetailOfTransactionsBetweenRelatedPartiesExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureInDetailOfTransactionsBetweenRelatedPartiesExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure of transactions between related parties.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureInDetailOfTransactionsBetweenRelatedPartiesExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureInDetailOfTransactionsBetweenRelatedPartiesExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureInDetailOfTransactionsBetweenRelatedPartiesExplanatory" xlink:to="lab_ck0000932782_DisclosureInDetailOfTransactionsBetweenRelatedPartiesExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ConstructionInProgressMember_019b46bd-0684-70c1-a5d4-5a180be51f5f_terseLabel_en-US" xlink:label="lab_ifrs-full_ConstructionInProgressMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Construction in progress</link:label>
    <link:label id="lab_ifrs-full_ConstructionInProgressMember_label_en-US" xlink:label="lab_ifrs-full_ConstructionInProgressMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Construction in progress [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ConstructionInProgressMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ConstructionInProgressMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ConstructionInProgressMember" xlink:to="lab_ifrs-full_ConstructionInProgressMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AssetsAbstract_019b46bd-0684-710b-8ed8-1846c1c8bc40_verboseLabel_en-US" xlink:label="lab_ifrs-full_AssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:label id="lab_ifrs-full_AssetsAbstract_019b46bd-0684-7558-b3f4-a4cc8e935c20_terseLabel_en-US" xlink:label="lab_ifrs-full_AssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:label id="lab_ifrs-full_AssetsAbstract_label_en-US" xlink:label="lab_ifrs-full_AssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AssetsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AssetsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AssetsAbstract" xlink:to="lab_ifrs-full_AssetsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ButaneMember_019b46bd-053c-7bb3-820a-8de2c7a4e3f7_terseLabel_en-US" xlink:label="lab_ck0000932782_ButaneMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Butane</link:label>
    <link:label id="lab_ck0000932782_ButaneMember_label_en-US" xlink:label="lab_ck0000932782_ButaneMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Butane [member]</link:label>
    <link:label id="lab_ck0000932782_ButaneMember_documentation_en-US" xlink:label="lab_ck0000932782_ButaneMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Butane.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ButaneMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ButaneMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ButaneMember" xlink:to="lab_ck0000932782_ButaneMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SalinaCruzRefineryMember_019b46bd-0684-79c9-abf6-ffad6882c096_terseLabel_en-US" xlink:label="lab_ck0000932782_SalinaCruzRefineryMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Salina Cruz Refinery</link:label>
    <link:label id="lab_ck0000932782_SalinaCruzRefineryMember_label_en-US" xlink:label="lab_ck0000932782_SalinaCruzRefineryMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Salina Cruz Refinery [member]</link:label>
    <link:label id="lab_ck0000932782_SalinaCruzRefineryMember_documentation_en-US" xlink:label="lab_ck0000932782_SalinaCruzRefineryMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Salina Cruz Refinery.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SalinaCruzRefineryMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SalinaCruzRefineryMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SalinaCruzRefineryMember" xlink:to="lab_ck0000932782_SalinaCruzRefineryMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PrepaidSwapsMember_019d612d-deda-7c85-936d-2e157f17244e_terseLabel_en-US" xlink:label="lab_ck0000932782_PrepaidSwapsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Prepaid swaps</link:label>
    <link:label id="lab_ck0000932782_PrepaidSwapsMember_label_en-US" xlink:label="lab_ck0000932782_PrepaidSwapsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Prepaid Swaps [Member]</link:label>
    <link:label id="lab_ck0000932782_PrepaidSwapsMember_documentation_en-US" xlink:label="lab_ck0000932782_PrepaidSwapsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Prepaid Swaps</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PrepaidSwapsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PrepaidSwapsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PrepaidSwapsMember" xlink:to="lab_ck0000932782_PrepaidSwapsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EthyleneProcessorComplexMember_019b46bd-053c-7acf-8aac-3264ccf8ba8a_terseLabel_en-US" xlink:label="lab_ck0000932782_EthyleneProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ethylene Processor Complex</link:label>
    <link:label id="lab_ck0000932782_EthyleneProcessorComplexMember_label_en-US" xlink:label="lab_ck0000932782_EthyleneProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ethylene Processor Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_EthyleneProcessorComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_EthyleneProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ethylene Processor Complex</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EthyleneProcessorComplexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EthyleneProcessorComplexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EthyleneProcessorComplexMember" xlink:to="lab_ck0000932782_EthyleneProcessorComplexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_UndevelopedDryGasReservesNetPeriodDecrease_019b46bd-053d-7988-824f-202505bb4307_terseLabel_en-US" xlink:label="lab_ck0000932782_UndevelopedDryGasReservesNetPeriodDecrease" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Undeveloped dry gas reserves increase decrease</link:label>
    <link:label id="lab_ck0000932782_UndevelopedDryGasReservesNetPeriodDecrease_label_en-US" xlink:label="lab_ck0000932782_UndevelopedDryGasReservesNetPeriodDecrease" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Undeveloped Dry Gas Reserves Net Period Decrease</link:label>
    <link:label id="lab_ck0000932782_UndevelopedDryGasReservesNetPeriodDecrease_documentation_en-US" xlink:label="lab_ck0000932782_UndevelopedDryGasReservesNetPeriodDecrease" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Undeveloped dry gas reserves net period decrease.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_UndevelopedDryGasReservesNetPeriodDecrease" xlink:href="ck0000932782-20251231.xsd#ck0000932782_UndevelopedDryGasReservesNetPeriodDecrease"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_UndevelopedDryGasReservesNetPeriodDecrease" xlink:to="lab_ck0000932782_UndevelopedDryGasReservesNetPeriodDecrease" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentAssetsAbstract_019b46bd-053d-729e-b9b7-eb14055ff88c_verboseLabel_en-US" xlink:label="lab_ifrs-full_CurrentAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Current assets:</link:label>
    <link:label id="lab_ifrs-full_CurrentAssetsAbstract_019b46bd-053d-718c-851d-9751d743aadc_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current assets</link:label>
    <link:label id="lab_ifrs-full_CurrentAssetsAbstract_label_en-US" xlink:label="lab_ifrs-full_CurrentAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current assets [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAssetsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentAssetsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentAssetsAbstract" xlink:to="lab_ifrs-full_CurrentAssetsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_GainLossOnChangesInEffectOfLimitingNetDefinedBenefitAssetToAssetCeiling_019b46bd-045f-7ab8-8b72-d8c73d74bb1a_terseLabel_en-US" xlink:label="lab_ifrs-full_GainLossOnChangesInEffectOfLimitingNetDefinedBenefitAssetToAssetCeiling" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Actuarial (gains) losses in plan assets</link:label>
    <link:label id="lab_ifrs-full_GainLossOnChangesInEffectOfLimitingNetDefinedBenefitAssetToAssetCeiling_019b46bd-045f-737d-905f-440d839a5a46_negatedLabel_en-US" xlink:label="lab_ifrs-full_GainLossOnChangesInEffectOfLimitingNetDefinedBenefitAssetToAssetCeiling" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">For experience during the year</link:label>
    <link:label id="lab_ifrs-full_GainLossOnChangesInEffectOfLimitingNetDefinedBenefitAssetToAssetCeiling_label_en-US" xlink:label="lab_ifrs-full_GainLossOnChangesInEffectOfLimitingNetDefinedBenefitAssetToAssetCeiling" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on changes in effect of limiting net defined benefit asset to asset ceiling excluding interest income or expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainLossOnChangesInEffectOfLimitingNetDefinedBenefitAssetToAssetCeiling" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainLossOnChangesInEffectOfLimitingNetDefinedBenefitAssetToAssetCeiling"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_GainLossOnChangesInEffectOfLimitingNetDefinedBenefitAssetToAssetCeiling" xlink:to="lab_ifrs-full_GainLossOnChangesInEffectOfLimitingNetDefinedBenefitAssetToAssetCeiling" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RevenueAbstract_019b46bd-0684-7251-9b10-e58410271484_terseLabel_en-US" xlink:label="lab_ifrs-full_RevenueAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sales:</link:label>
    <link:label id="lab_ifrs-full_RevenueAbstract_label_en-US" xlink:label="lab_ifrs-full_RevenueAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RevenueAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevenueAbstract"/>
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    <link:label id="lab_ck0000932782_ImpairmentOfLeases_019d6088-248c-79b0-a5a4-839665e23727_terseLabel_en-US" xlink:label="lab_ck0000932782_ImpairmentOfLeases" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Impairment of leases</link:label>
    <link:label id="lab_ck0000932782_ImpairmentOfLeases_label_en-US" xlink:label="lab_ck0000932782_ImpairmentOfLeases" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impairment Of Leases</link:label>
    <link:label id="lab_ck0000932782_ImpairmentOfLeases_documentation_en-US" xlink:label="lab_ck0000932782_ImpairmentOfLeases" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Impairment Of Leases</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ImpairmentOfLeases" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ImpairmentOfLeases"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ImpairmentOfLeases" xlink:to="lab_ck0000932782_ImpairmentOfLeases" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentAssetsAbstract_019b46bd-053d-7b8f-a7a8-8f322cbb568a_terseLabel_en-US" xlink:label="lab_ifrs-full_NoncurrentAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-current assets:</link:label>
    <link:label id="lab_ifrs-full_NoncurrentAssetsAbstract_label_en-US" xlink:label="lab_ifrs-full_NoncurrentAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-current assets [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentAssetsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentAssetsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentAssetsAbstract" xlink:to="lab_ifrs-full_NoncurrentAssetsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows_019b46bd-045f-7f21-8240-7690bdbb34a2_terseLabel_en-US" xlink:label="lab_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Future net cash flows</link:label>
    <link:label id="lab_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows_label_en-US" xlink:label="lab_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Future Net Cash Flow, before Discount</link:label>
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    <link:label id="lab_ck0000932782_ProvisionsForPluggingWells_documentation_en-US" xlink:label="lab_ck0000932782_ProvisionsForPluggingWells" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Provisions for plugging wells.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProvisionsForPluggingWells" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProvisionsForPluggingWells"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProvisionsForPluggingWells" xlink:to="lab_ck0000932782_ProvisionsForPluggingWells" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset_019b46bd-0684-780e-875d-33ab4bccdb3d_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Defined benefits paid by the fund</link:label>
    <link:label id="lab_ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset_label_en-US" xlink:label="lab_ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Decrease (increase) in net defined benefit liability (asset) resulting from contributions to plan by plan participants</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset" xlink:to="lab_ifrs-full_ContributionsToPlanByPlanParticipantsNetDefinedBenefitLiabilityAsset" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EbanoCEEMember_019b46bd-0684-7cff-bb1e-ea1181e120e2_verboseLabel_en-US" xlink:label="lab_ck0000932782_EbanoCEEMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">&#201;bano (CEE)</link:label>
    <link:label id="lab_ck0000932782_EbanoCEEMember_label_en-US" xlink:label="lab_ck0000932782_EbanoCEEMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ebano (CEE) [Member]</link:label>
    <link:label id="lab_ck0000932782_EbanoCEEMember_documentation_en-US" xlink:label="lab_ck0000932782_EbanoCEEMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ebano (CEE)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EbanoCEEMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EbanoCEEMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EbanoCEEMember" xlink:to="lab_ck0000932782_EbanoCEEMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DevelopedDryGasReservesNetPeriodDecrease_019b46bd-05e4-7d77-a501-c975187c5c7b_terseLabel_en-US" xlink:label="lab_ck0000932782_DevelopedDryGasReservesNetPeriodDecrease" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Developed dry gas reserves increase decrease</link:label>
    <link:label id="lab_ck0000932782_DevelopedDryGasReservesNetPeriodDecrease_label_en-US" xlink:label="lab_ck0000932782_DevelopedDryGasReservesNetPeriodDecrease" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Developed Dry Gas Reserves Net Period Decrease</link:label>
    <link:label id="lab_ck0000932782_DevelopedDryGasReservesNetPeriodDecrease_documentation_en-US" xlink:label="lab_ck0000932782_DevelopedDryGasReservesNetPeriodDecrease" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Developed dry gas reserves net period decrease.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DevelopedDryGasReservesNetPeriodDecrease" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DevelopedDryGasReservesNetPeriodDecrease"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DevelopedDryGasReservesNetPeriodDecrease" xlink:to="lab_ck0000932782_DevelopedDryGasReservesNetPeriodDecrease" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BurgosGasProcessorComplexMember_019bba5c-8a83-7b3b-bb76-f585b145dd83_terseLabel_en-US" xlink:label="lab_ck0000932782_BurgosGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Burgos Gas Processor Complex</link:label>
    <link:label id="lab_ck0000932782_BurgosGasProcessorComplexMember_label_en-US" xlink:label="lab_ck0000932782_BurgosGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Burgos Gas Processor Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_BurgosGasProcessorComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_BurgosGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Burgos Gas Processor Complex</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BurgosGasProcessorComplexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BurgosGasProcessorComplexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BurgosGasProcessorComplexMember" xlink:to="lab_ck0000932782_BurgosGasProcessorComplexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FundsUsedInOperatingActivitiesAbstract_019b46bd-045f-7a07-ba6a-9a8107e61cb2_terseLabel_en-US" xlink:label="lab_ck0000932782_FundsUsedInOperatingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Funds from operating activities</link:label>
    <link:label id="lab_ck0000932782_FundsUsedInOperatingActivitiesAbstract_label_en-US" xlink:label="lab_ck0000932782_FundsUsedInOperatingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Funds used in operating activities abstract</link:label>
    <link:label id="lab_ck0000932782_FundsUsedInOperatingActivitiesAbstract_documentation_en-US" xlink:label="lab_ck0000932782_FundsUsedInOperatingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Funds used in operating activities abstract</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FundsUsedInOperatingActivitiesAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FundsUsedInOperatingActivitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FundsUsedInOperatingActivitiesAbstract" xlink:to="lab_ck0000932782_FundsUsedInOperatingActivitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ImportTaxesAndDuties_019b46bd-05e5-7cd8-997c-9e6087132088_terseLabel_en-US" xlink:label="lab_ck0000932782_ImportTaxesAndDuties" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Import taxes and duties</link:label>
    <link:label id="lab_ck0000932782_ImportTaxesAndDuties_label_en-US" xlink:label="lab_ck0000932782_ImportTaxesAndDuties" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Import Taxes and Duties</link:label>
    <link:label id="lab_ck0000932782_ImportTaxesAndDuties_documentation_en-US" xlink:label="lab_ck0000932782_ImportTaxesAndDuties" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Import Taxes and Duties</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ImportTaxesAndDuties" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ImportTaxesAndDuties"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ImportTaxesAndDuties" xlink:to="lab_ck0000932782_ImportTaxesAndDuties" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ValueAtRisk_019b46bd-053c-7280-a5be-4c8e505a66c2_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_ValueAtRisk" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">VaR 95% Net</link:label>
    <link:label id="lab_ifrs-full_ValueAtRisk_019b46bd-053c-7098-97ca-b44fe033ee10_terseLabel_en-US" xlink:label="lab_ifrs-full_ValueAtRisk" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Value at risk</link:label>
    <link:label id="lab_ifrs-full_ValueAtRisk_label_en-US" xlink:label="lab_ifrs-full_ValueAtRisk" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Value at risk</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ValueAtRisk" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ValueAtRisk"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ValueAtRisk" xlink:to="lab_ifrs-full_ValueAtRisk" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CorporateSegmentMember_019b46bd-0684-7af1-bd00-6bc320a9030d_terseLabel_en-US" xlink:label="lab_ck0000932782_CorporateSegmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Corporate</link:label>
    <link:label id="lab_ck0000932782_CorporateSegmentMember_label_en-US" xlink:label="lab_ck0000932782_CorporateSegmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Corporate Segment [Member]</link:label>
    <link:label id="lab_ck0000932782_CorporateSegmentMember_documentation_en-US" xlink:label="lab_ck0000932782_CorporateSegmentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Corporate Segment</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CorporateSegmentMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CorporateSegmentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CorporateSegmentMember" xlink:to="lab_ck0000932782_CorporateSegmentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EstimatedFutureContractPaymentsYearFive_019d3d95-cb93-7def-a293-ae27fd527007_terseLabel_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPaymentsYearFive" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2030</link:label>
    <link:label id="lab_ck0000932782_EstimatedFutureContractPaymentsYearFive_label_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPaymentsYearFive" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Estimated future contract payments year five</link:label>
    <link:label id="lab_ck0000932782_EstimatedFutureContractPaymentsYearFive_documentation_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPaymentsYearFive" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Estimated future contract payments year five</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EstimatedFutureContractPaymentsYearFive" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EstimatedFutureContractPaymentsYearFive"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EstimatedFutureContractPaymentsYearFive" xlink:to="lab_ck0000932782_EstimatedFutureContractPaymentsYearFive" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentAssets_019b46bd-05e5-7798-b372-2ff94b02d3b8_totalLabel_en-US" xlink:label="lab_ifrs-full_NoncurrentAssets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total non-current assets</link:label>
    <link:label id="lab_ifrs-full_NoncurrentAssets_019b46bd-05e5-735a-a5aa-bf661ff3602f_netLabel_en-US" xlink:label="lab_ifrs-full_NoncurrentAssets" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Long-lived assets outside of Mexico</link:label>
    <link:label id="lab_ifrs-full_NoncurrentAssets_019b46bd-05e5-735d-8502-5e283543e4d3_verboseLabel_en-US" xlink:label="lab_ifrs-full_NoncurrentAssets" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total non-current assets</link:label>
    <link:label id="lab_ifrs-full_NoncurrentAssets_label_en-US" xlink:label="lab_ifrs-full_NoncurrentAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-current assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentAssets" xlink:to="lab_ifrs-full_NoncurrentAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FinancialAssetsAbstract_019b46bd-0715-71d3-bb62-044512bc25c7_terseLabel_en-US" xlink:label="lab_ck0000932782_FinancialAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other financing receivables:</link:label>
    <link:label id="lab_ck0000932782_FinancialAssetsAbstract_label_en-US" xlink:label="lab_ck0000932782_FinancialAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Assets [Abstract]</link:label>
    <link:label id="lab_ck0000932782_FinancialAssetsAbstract_documentation_en-US" xlink:label="lab_ck0000932782_FinancialAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial assets [Abstract].</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FinancialAssetsAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FinancialAssetsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FinancialAssetsAbstract" xlink:to="lab_ck0000932782_FinancialAssetsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NetIncreaseDecreaseInTransferPricesAndProductionCosts_019b46bd-053c-7cdc-ac16-b277e4b8009b_terseLabel_en-US" xlink:label="lab_ck0000932782_NetIncreaseDecreaseInTransferPricesAndProductionCosts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net changes in prices and production costs</link:label>
    <link:label id="lab_ck0000932782_NetIncreaseDecreaseInTransferPricesAndProductionCosts_label_en-US" xlink:label="lab_ck0000932782_NetIncreaseDecreaseInTransferPricesAndProductionCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net increase decrease in transfer prices and production costs</link:label>
    <link:label id="lab_ck0000932782_NetIncreaseDecreaseInTransferPricesAndProductionCosts_documentation_en-US" xlink:label="lab_ck0000932782_NetIncreaseDecreaseInTransferPricesAndProductionCosts" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net increase decrease in transfer prices and production costs.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NetIncreaseDecreaseInTransferPricesAndProductionCosts" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NetIncreaseDecreaseInTransferPricesAndProductionCosts"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NetIncreaseDecreaseInTransferPricesAndProductionCosts" xlink:to="lab_ck0000932782_NetIncreaseDecreaseInTransferPricesAndProductionCosts" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfDefinedBenefitPlansTable_019b46bd-0684-7fbc-972e-f027e3f2eafc_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDefinedBenefitPlansTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of defined benefit plans [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDefinedBenefitPlansTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDefinedBenefitPlansTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of defined benefit plans [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDefinedBenefitPlansTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDefinedBenefitPlansTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfDefinedBenefitPlansTable" xlink:to="lab_ifrs-full_DisclosureOfDefinedBenefitPlansTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_A6.490NotesDue2027Member_019bd5bb-4951-7eb1-9f80-4e009d3932de_terseLabel_en-US" xlink:label="lab_ck0000932782_A6.490NotesDue2027Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">6.490% Notes Due 2027</link:label>
    <link:label id="lab_ck0000932782_A6.490NotesDue2027Member_label_en-US" xlink:label="lab_ck0000932782_A6.490NotesDue2027Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">6.490% Notes Due 2027 [Member]</link:label>
    <link:label id="lab_ck0000932782_A6.490NotesDue2027Member_documentation_en-US" xlink:label="lab_ck0000932782_A6.490NotesDue2027Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">6.490% Notes Due 2027</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_A6.490NotesDue2027Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_A6.490NotesDue2027Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_A6.490NotesDue2027Member" xlink:to="lab_ck0000932782_A6.490NotesDue2027Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_019b46bd-053d-7008-ab97-285eb2e437b4_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of property, plant and equipment [axis]</link:label>
    <link:label id="lab_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis_label_en-US" xlink:label="lab_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of property, plant and equipment [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:to="lab_ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionThreeAugust2025Member_label_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionThreeAugust2025Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Three, August 2025 [Member]</link:label>
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    <link:label id="lab_ck0000932782_PaymentsForExtractionExpenses_documentation_en-US" xlink:label="lab_ck0000932782_PaymentsForExtractionExpenses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Payments for extraction expenses.</link:label>
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    <link:label id="lab_ifrs-full_TradeAndOtherCurrentReceivables_019b46bd-05e4-7a96-99da-90f05f4f1747_terseLabel_en-US" xlink:label="lab_ifrs-full_TradeAndOtherCurrentReceivables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employees and officers</link:label>
    <link:label id="lab_ifrs-full_TradeAndOtherCurrentReceivables_label_en-US" xlink:label="lab_ifrs-full_TradeAndOtherCurrentReceivables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trade and other current receivables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherCurrentReceivables" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentReceivables"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TradeAndOtherCurrentReceivables" xlink:to="lab_ifrs-full_TradeAndOtherCurrentReceivables" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory_019b46bd-0715-7a53-95ba-c59b0d56df12_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Other Assets</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of other non-current assets [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfOtherNoncurrentAssetsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityInteractiveDataCurrent_019b46bd-0715-7a47-a427-1df20aa33826_terseLabel_en-US" xlink:label="lab_dei_EntityInteractiveDataCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Interactive Data Current</link:label>
    <link:label id="lab_dei_EntityInteractiveDataCurrent_label_en-US" xlink:label="lab_dei_EntityInteractiveDataCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Interactive Data Current</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityInteractiveDataCurrent" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityInteractiveDataCurrent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityInteractiveDataCurrent" xlink:to="lab_dei_EntityInteractiveDataCurrent" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SeagullOptionMember_019b46bd-053c-7700-b8f6-7f646226fed2_terseLabel_en-US" xlink:label="lab_ck0000932782_SeagullOptionMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Seagull option</link:label>
    <link:label id="lab_ck0000932782_SeagullOptionMember_label_en-US" xlink:label="lab_ck0000932782_SeagullOptionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Seagull Option [member]</link:label>
    <link:label id="lab_ck0000932782_SeagullOptionMember_documentation_en-US" xlink:label="lab_ck0000932782_SeagullOptionMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Seagull option.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SeagullOptionMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SeagullOptionMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SeagullOptionMember" xlink:to="lab_ck0000932782_SeagullOptionMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SyndicatedLoanMember_019b46bd-0684-7534-aa64-650ea424c7a8_terseLabel_en-US" xlink:label="lab_ck0000932782_SyndicatedLoanMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Syndicated loans</link:label>
    <link:label id="lab_ck0000932782_SyndicatedLoanMember_label_en-US" xlink:label="lab_ck0000932782_SyndicatedLoanMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Syndicated loan [member]</link:label>
    <link:label id="lab_ck0000932782_SyndicatedLoanMember_documentation_en-US" xlink:label="lab_ck0000932782_SyndicatedLoanMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Syndicated loan [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SyndicatedLoanMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SyndicatedLoanMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SyndicatedLoanMember" xlink:to="lab_ck0000932782_SyndicatedLoanMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DerivativeLiabilitiesMember_019b46bd-0715-780c-b642-dd63fa275583_terseLabel_en-US" xlink:label="lab_ck0000932782_DerivativeLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative financial instruments</link:label>
    <link:label id="lab_ck0000932782_DerivativeLiabilitiesMember_label_en-US" xlink:label="lab_ck0000932782_DerivativeLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative liabilities [member]</link:label>
    <link:label id="lab_ck0000932782_DerivativeLiabilitiesMember_documentation_en-US" xlink:label="lab_ck0000932782_DerivativeLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivative liabilities for financial liabilities.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DerivativeLiabilitiesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DerivativeLiabilitiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DerivativeLiabilitiesMember" xlink:to="lab_ck0000932782_DerivativeLiabilitiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SixPointFiveZeroZeroPercentBondsDueTwoThousandFortyOneMember_019b46bd-0715-7a75-95a7-9e98f0438eff_terseLabel_en-US" xlink:label="lab_ck0000932782_SixPointFiveZeroZeroPercentBondsDueTwoThousandFortyOneMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">6.500% Bonds due 2041</link:label>
    <link:label id="lab_ck0000932782_SixPointFiveZeroZeroPercentBondsDueTwoThousandFortyOneMember_label_en-US" xlink:label="lab_ck0000932782_SixPointFiveZeroZeroPercentBondsDueTwoThousandFortyOneMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Six Point Five Zero Zero Percent Bonds Due Two Thousand Forty One [member]</link:label>
    <link:label id="lab_ck0000932782_SixPointFiveZeroZeroPercentBondsDueTwoThousandFortyOneMember_documentation_en-US" xlink:label="lab_ck0000932782_SixPointFiveZeroZeroPercentBondsDueTwoThousandFortyOneMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Six point five zero zero percent bonds due two thousand forty one.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SixPointFiveZeroZeroPercentBondsDueTwoThousandFortyOneMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SixPointFiveZeroZeroPercentBondsDueTwoThousandFortyOneMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SixPointFiveZeroZeroPercentBondsDueTwoThousandFortyOneMember" xlink:to="lab_ck0000932782_SixPointFiveZeroZeroPercentBondsDueTwoThousandFortyOneMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfVoluntaryChangeInAccountingPolicyAbstract_019b46bd-053d-79c7-98e0-4b72eb4c02bc_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfVoluntaryChangeInAccountingPolicyAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of voluntary change in accounting policy [abstract]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfVoluntaryChangeInAccountingPolicyAbstract_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfVoluntaryChangeInAccountingPolicyAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of voluntary change in accounting policy [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfVoluntaryChangeInAccountingPolicyAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfVoluntaryChangeInAccountingPolicyAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfVoluntaryChangeInAccountingPolicyAbstract" xlink:to="lab_ifrs-full_DisclosureOfVoluntaryChangeInAccountingPolicyAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LevelsOfFairValueHierarchyAxis_019b46bd-053c-7076-a5f4-2b35f6ec595d_terseLabel_en-US" xlink:label="lab_ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Levels of fair value hierarchy [axis]</link:label>
    <link:label id="lab_ifrs-full_LevelsOfFairValueHierarchyAxis_label_en-US" xlink:label="lab_ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Levels of fair value hierarchy [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LevelsOfFairValueHierarchyAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:to="lab_ifrs-full_LevelsOfFairValueHierarchyAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_EquityAttributableToOwnersOfParentMember_019b46bd-05e5-77b9-b244-c2b3e0b3efb3_terseLabel_en-US" xlink:label="lab_ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ifrs-full_EquityAttributableToOwnersOfParentMember_label_en-US" xlink:label="lab_ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity attributable to owners of parent [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EquityAttributableToOwnersOfParentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:to="lab_ifrs-full_EquityAttributableToOwnersOfParentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DeferredTaxAssetsAccruedAwardCreditsLiabilities_019b46bd-053c-72b3-916f-e7b23fbba922_terseLabel_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsAccruedAwardCreditsLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued liabilities</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxAssetsAccruedAwardCreditsLiabilities_label_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsAccruedAwardCreditsLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred tax assets accrued award credits liabilities</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxAssetsAccruedAwardCreditsLiabilities_documentation_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsAccruedAwardCreditsLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred tax assets accrued award credits liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DeferredTaxAssetsAccruedAwardCreditsLiabilities" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DeferredTaxAssetsAccruedAwardCreditsLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DeferredTaxAssetsAccruedAwardCreditsLiabilities" xlink:to="lab_ck0000932782_DeferredTaxAssetsAccruedAwardCreditsLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherTaxesAndDutiesPaidRefundClassifiedAsOperatingActivities_019b46bd-05e4-7993-89b5-6c1bd1fbf1ae_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherTaxesAndDutiesPaidRefundClassifiedAsOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other taxes and duties</link:label>
    <link:label id="lab_ck0000932782_OtherTaxesAndDutiesPaidRefundClassifiedAsOperatingActivities_label_en-US" xlink:label="lab_ck0000932782_OtherTaxesAndDutiesPaidRefundClassifiedAsOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other taxes and duties paid refund classified as operating activities</link:label>
    <link:label id="lab_ck0000932782_OtherTaxesAndDutiesPaidRefundClassifiedAsOperatingActivities_documentation_en-US" xlink:label="lab_ck0000932782_OtherTaxesAndDutiesPaidRefundClassifiedAsOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other taxes and duties paid refund classified as operating activities.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherTaxesAndDutiesPaidRefundClassifiedAsOperatingActivities" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherTaxesAndDutiesPaidRefundClassifiedAsOperatingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherTaxesAndDutiesPaidRefundClassifiedAsOperatingActivities" xlink:to="lab_ck0000932782_OtherTaxesAndDutiesPaidRefundClassifiedAsOperatingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TransportationEquipment1Member_019b46bd-0684-739d-b789-aaeb111eb249_terseLabel_en-US" xlink:label="lab_ck0000932782_TransportationEquipment1Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Transportation equipment</link:label>
    <link:label id="lab_ck0000932782_TransportationEquipment1Member_label_en-US" xlink:label="lab_ck0000932782_TransportationEquipment1Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Transportation Equipment 1 [member]</link:label>
    <link:label id="lab_ck0000932782_TransportationEquipment1Member_documentation_en-US" xlink:label="lab_ck0000932782_TransportationEquipment1Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Transportation equipment.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TransportationEquipment1Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TransportationEquipment1Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TransportationEquipment1Member" xlink:to="lab_ck0000932782_TransportationEquipment1Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsDomain_019b46bd-053c-7d49-a101-7e67eaeaa08f_terseLabel_en-US" xlink:label="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Individual assets or cash-generating units</link:label>
    <link:label id="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsDomain_label_en-US" xlink:label="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Individual assets or cash-generating units [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IndividualAssetsOrCashgeneratingUnitsDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IndividualAssetsOrCashgeneratingUnitsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IndividualAssetsOrCashgeneratingUnitsDomain" xlink:to="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsDomain" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_FinancingOfInfrastructureAssetMember_label_en-US" xlink:label="lab_ck0000932782_FinancingOfInfrastructureAssetMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Of Infrastructure Asset [Member]</link:label>
    <link:label id="lab_ck0000932782_FinancingOfInfrastructureAssetMember_documentation_en-US" xlink:label="lab_ck0000932782_FinancingOfInfrastructureAssetMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financing Of Infrastructure asset [member].</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FinancingOfInfrastructureAssetMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FinancingOfInfrastructureAssetMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FinancingOfInfrastructureAssetMember" xlink:to="lab_ck0000932782_FinancingOfInfrastructureAssetMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ActuarialAssumptionOfLifeExpectancyAfterRetirementMember_019b46bd-05e4-73b3-8365-123d58971d2c_terseLabel_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfLifeExpectancyAfterRetirementMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rate of increase in post-mortem pensions</link:label>
    <link:label id="lab_ifrs-full_ActuarialAssumptionOfLifeExpectancyAfterRetirementMember_label_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfLifeExpectancyAfterRetirementMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Actuarial assumption of life expectancy after retirement [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ActuarialAssumptionOfLifeExpectancyAfterRetirementMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ActuarialAssumptionOfLifeExpectancyAfterRetirementMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ActuarialAssumptionOfLifeExpectancyAfterRetirementMember" xlink:to="lab_ifrs-full_ActuarialAssumptionOfLifeExpectancyAfterRetirementMember" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_TaxRegimeApplicableToAssignmentsAfter60MonthsMember_019b46bd-05e4-7479-bf7c-e07e9eeb8895_terseLabel_en-US" xlink:label="lab_ck0000932782_TaxRegimeApplicableToAssignmentsAfter60MonthsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tax regime applicable to assignments after 60 months</link:label>
    <link:label id="lab_ck0000932782_TaxRegimeApplicableToAssignmentsAfter60MonthsMember_label_en-US" xlink:label="lab_ck0000932782_TaxRegimeApplicableToAssignmentsAfter60MonthsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tax regime applicable to assignments after 60 months [Member]</link:label>
    <link:label id="lab_ck0000932782_TaxRegimeApplicableToAssignmentsAfter60MonthsMember_documentation_en-US" xlink:label="lab_ck0000932782_TaxRegimeApplicableToAssignmentsAfter60MonthsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tax regime applicable to assignments after 60 months</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TaxRegimeApplicableToAssignmentsAfter60MonthsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TaxRegimeApplicableToAssignmentsAfter60MonthsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TaxRegimeApplicableToAssignmentsAfter60MonthsMember" xlink:to="lab_ck0000932782_TaxRegimeApplicableToAssignmentsAfter60MonthsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProceedsFromUnsuccessfulWells_019b46bd-053c-7407-9177-14c58fb4f59d_terseLabel_en-US" xlink:label="lab_ck0000932782_ProceedsFromUnsuccessfulWells" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unsuccessful wells from intangible assets</link:label>
    <link:label id="lab_ck0000932782_ProceedsFromUnsuccessfulWells_label_en-US" xlink:label="lab_ck0000932782_ProceedsFromUnsuccessfulWells" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds From Unsuccessful Wells</link:label>
    <link:label id="lab_ck0000932782_ProceedsFromUnsuccessfulWells_documentation_en-US" xlink:label="lab_ck0000932782_ProceedsFromUnsuccessfulWells" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Proceeds from unsuccessful wells.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProceedsFromUnsuccessfulWells" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProceedsFromUnsuccessfulWells"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProceedsFromUnsuccessfulWells" xlink:to="lab_ck0000932782_ProceedsFromUnsuccessfulWells" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TiieRateMember_019b46bd-0684-7bcd-90a0-fab096289727_terseLabel_en-US" xlink:label="lab_ck0000932782_TiieRateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">TIIE</link:label>
    <link:label id="lab_ck0000932782_TiieRateMember_label_en-US" xlink:label="lab_ck0000932782_TiieRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">TIIE Rate [member]</link:label>
    <link:label id="lab_ck0000932782_TiieRateMember_documentation_en-US" xlink:label="lab_ck0000932782_TiieRateMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">TIIE Rate [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TiieRateMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TiieRateMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TiieRateMember" xlink:to="lab_ck0000932782_TiieRateMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherCurrentReceivables_019b46bd-05e5-701f-beb6-cf996ad0c9ac_verboseLabel_en-US" xlink:label="lab_ifrs-full_OtherCurrentReceivables" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other financing receivables</link:label>
    <link:label id="lab_ifrs-full_OtherCurrentReceivables_label_en-US" xlink:label="lab_ifrs-full_OtherCurrentReceivables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other current receivables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCurrentReceivables" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherCurrentReceivables"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherCurrentReceivables" xlink:to="lab_ifrs-full_OtherCurrentReceivables" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DeferredTaxLiabilitiesOther1_019b46bd-05e4-7e5b-ae41-f8d0106bf3c4_negatedLabel_en-US" xlink:label="lab_ck0000932782_DeferredTaxLiabilitiesOther1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxLiabilitiesOther1_label_en-US" xlink:label="lab_ck0000932782_DeferredTaxLiabilitiesOther1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred tax liabilities other1</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxLiabilitiesOther1_documentation_en-US" xlink:label="lab_ck0000932782_DeferredTaxLiabilitiesOther1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred tax liabilities other.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DeferredTaxLiabilitiesOther1" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DeferredTaxLiabilitiesOther1"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DeferredTaxLiabilitiesOther1" xlink:to="lab_ck0000932782_DeferredTaxLiabilitiesOther1" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ChangeInPensionPlanAssetsAbstract_019b46bd-05e4-7e23-bbef-d89cce1dbc99_terseLabel_en-US" xlink:label="lab_ck0000932782_ChangeInPensionPlanAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in pension plan assets</link:label>
    <link:label id="lab_ck0000932782_ChangeInPensionPlanAssetsAbstract_label_en-US" xlink:label="lab_ck0000932782_ChangeInPensionPlanAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Change In Pension Plan Assets [Abstract]</link:label>
    <link:label id="lab_ck0000932782_ChangeInPensionPlanAssetsAbstract_documentation_en-US" xlink:label="lab_ck0000932782_ChangeInPensionPlanAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Change In Pension Plan Assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ChangeInPensionPlanAssetsAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ChangeInPensionPlanAssetsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ChangeInPensionPlanAssetsAbstract" xlink:to="lab_ck0000932782_ChangeInPensionPlanAssetsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IncreaseDecreaseInApplicableTaxRate_019b46bd-05e4-7520-83a8-e183f968d2af_terseLabel_en-US" xlink:label="lab_ck0000932782_IncreaseDecreaseInApplicableTaxRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage DUC tax rate</link:label>
    <link:label id="lab_ck0000932782_IncreaseDecreaseInApplicableTaxRate_label_en-US" xlink:label="lab_ck0000932782_IncreaseDecreaseInApplicableTaxRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase Decrease In Applicable Tax Rate</link:label>
    <link:label id="lab_ck0000932782_IncreaseDecreaseInApplicableTaxRate_documentation_en-US" xlink:label="lab_ck0000932782_IncreaseDecreaseInApplicableTaxRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Increase decrease in applicable tax rate.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncreaseDecreaseInApplicableTaxRate" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncreaseDecreaseInApplicableTaxRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IncreaseDecreaseInApplicableTaxRate" xlink:to="lab_ck0000932782_IncreaseDecreaseInApplicableTaxRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherRevenueAndExpenseNetLineItems_019b46bd-0715-7547-b0ee-cd838b200ac4_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherRevenueAndExpenseNetLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Revenue And Expense Net [Line Items]</link:label>
    <link:label id="lab_ck0000932782_OtherRevenueAndExpenseNetLineItems_label_en-US" xlink:label="lab_ck0000932782_OtherRevenueAndExpenseNetLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Revenue And Expense Net [Line Items]</link:label>
    <link:label id="lab_ck0000932782_OtherRevenueAndExpenseNetLineItems_documentation_en-US" xlink:label="lab_ck0000932782_OtherRevenueAndExpenseNetLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Revenue And Expense Net</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherRevenueAndExpenseNetLineItems" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherRevenueAndExpenseNetLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherRevenueAndExpenseNetLineItems" xlink:to="lab_ck0000932782_OtherRevenueAndExpenseNetLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfLeasesExplanatory_019b46bd-0684-7980-9d2e-26c1ff2c76ff_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfLeasesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Leases</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfLeasesExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfLeasesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of leases [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfLeasesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfLeasesExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfLeasesExplanatory" xlink:to="lab_ifrs-full_DisclosureOfLeasesExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfDetailedInformationAboutInventoriesExplanatory_019b46bd-053c-79e7-8b81-a66ff01c6c5a_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfDetailedInformationAboutInventoriesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Inventories</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfDetailedInformationAboutInventoriesExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfDetailedInformationAboutInventoriesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about inventories [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfDetailedInformationAboutInventoriesExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfDetailedInformationAboutInventoriesExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The disclosure of detailed information about inventories.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfDetailedInformationAboutInventoriesExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfDetailedInformationAboutInventoriesExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfDetailedInformationAboutInventoriesExplanatory" xlink:to="lab_ck0000932782_DisclosureOfDetailedInformationAboutInventoriesExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities_019b46bd-053c-7791-ae6a-07add9a10abb_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employee benefits</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments for increase (decrease) in employee benefit liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities" xlink:to="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NetDeferredTaxAssetsBeforeValuationReserve_019b46bd-05e4-7369-8b11-a712484fb1af_totalLabel_en-US" xlink:label="lab_ck0000932782_NetDeferredTaxAssetsBeforeValuationReserve" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total deferred income tax asset</link:label>
    <link:label id="lab_ck0000932782_NetDeferredTaxAssetsBeforeValuationReserve_label_en-US" xlink:label="lab_ck0000932782_NetDeferredTaxAssetsBeforeValuationReserve" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net deferred tax assets before valuation reserve</link:label>
    <link:label id="lab_ck0000932782_NetDeferredTaxAssetsBeforeValuationReserve_documentation_en-US" xlink:label="lab_ck0000932782_NetDeferredTaxAssetsBeforeValuationReserve" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net deferred tax assets before valuation reserve.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NetDeferredTaxAssetsBeforeValuationReserve" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NetDeferredTaxAssetsBeforeValuationReserve"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NetDeferredTaxAssetsBeforeValuationReserve" xlink:to="lab_ck0000932782_NetDeferredTaxAssetsBeforeValuationReserve" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PercentageOfIncreaseDecreaseInCrudeOilPrice_019b46bd-053c-78eb-9670-dc4ecbf61aa5_terseLabel_en-US" xlink:label="lab_ck0000932782_PercentageOfIncreaseDecreaseInCrudeOilPrice" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of increase in crude oil price</link:label>
    <link:label id="lab_ck0000932782_PercentageOfIncreaseDecreaseInCrudeOilPrice_label_en-US" xlink:label="lab_ck0000932782_PercentageOfIncreaseDecreaseInCrudeOilPrice" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage Of Increase (Decrease) In Crude Oil Price</link:label>
    <link:label id="lab_ck0000932782_PercentageOfIncreaseDecreaseInCrudeOilPrice_documentation_en-US" xlink:label="lab_ck0000932782_PercentageOfIncreaseDecreaseInCrudeOilPrice" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percetnage of increase in crude oil price</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PercentageOfIncreaseDecreaseInCrudeOilPrice" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PercentageOfIncreaseDecreaseInCrudeOilPrice"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PercentageOfIncreaseDecreaseInCrudeOilPrice" xlink:to="lab_ck0000932782_PercentageOfIncreaseDecreaseInCrudeOilPrice" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MagnaGasolineMember_019b46bd-05e4-70ad-bb18-6d046393adcc_terseLabel_en-US" xlink:label="lab_ck0000932782_MagnaGasolineMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Magna Gasoline</link:label>
    <link:label id="lab_ck0000932782_MagnaGasolineMember_label_en-US" xlink:label="lab_ck0000932782_MagnaGasolineMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Magna Gasoline [member]</link:label>
    <link:label id="lab_ck0000932782_MagnaGasolineMember_documentation_en-US" xlink:label="lab_ck0000932782_MagnaGasolineMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Magna gasoline.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MagnaGasolineMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MagnaGasolineMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MagnaGasolineMember" xlink:to="lab_ck0000932782_MagnaGasolineMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ExpensesRelatedToUnsuccessfulWells_019b46bd-0684-7276-a78e-2ca164c0749c_terseLabel_en-US" xlink:label="lab_ck0000932782_ExpensesRelatedToUnsuccessfulWells" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expenses related to unsuccessful wells</link:label>
    <link:label id="lab_ck0000932782_ExpensesRelatedToUnsuccessfulWells_label_en-US" xlink:label="lab_ck0000932782_ExpensesRelatedToUnsuccessfulWells" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expenses Related To Unsuccessful Wells</link:label>
    <link:label id="lab_ck0000932782_ExpensesRelatedToUnsuccessfulWells_documentation_en-US" xlink:label="lab_ck0000932782_ExpensesRelatedToUnsuccessfulWells" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Expenses related to unsuccessful wells.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ExpensesRelatedToUnsuccessfulWells" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ExpensesRelatedToUnsuccessfulWells"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ExpensesRelatedToUnsuccessfulWells" xlink:to="lab_ck0000932782_ExpensesRelatedToUnsuccessfulWells" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_StatementOfCashFlowsAbstract_019b46bd-05e4-7ba7-89b9-1a3acf8a2423_terseLabel_en-US" xlink:label="lab_ifrs-full_StatementOfCashFlowsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement of cash flows [abstract]</link:label>
    <link:label id="lab_ifrs-full_StatementOfCashFlowsAbstract_label_en-US" xlink:label="lab_ifrs-full_StatementOfCashFlowsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of cash flows [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfCashFlowsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfCashFlowsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_StatementOfCashFlowsAbstract" xlink:to="lab_ifrs-full_StatementOfCashFlowsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfProvisionsCurrentExplanatory_019b46bd-053c-7e37-a97f-17c08eade71c_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfProvisionsCurrentExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Allowance Account for Plugging of Wells, Trials in Progress and Environmental Costs</link:label>
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    <link:label id="lab_ck0000932782_DisclosureOfProvisionsCurrentExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfProvisionsCurrentExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Provisions - current.</link:label>
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    <link:label id="lab_ifrs-full_OtherComprehensiveIncomeAttributableToNoncontrollingInterests_label_en-US" xlink:label="lab_ifrs-full_OtherComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other comprehensive income, attributable to non-controlling interests</link:label>
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    <link:label id="lab_ck0000932782_EstimatedReservesPercentage_label_en-US" xlink:label="lab_ck0000932782_EstimatedReservesPercentage" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Estimated reserves percentage</link:label>
    <link:label id="lab_ck0000932782_EstimatedReservesPercentage_documentation_en-US" xlink:label="lab_ck0000932782_EstimatedReservesPercentage" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Estimated reserves percentage.</link:label>
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    <link:label id="lab_ck0000932782_LongTermContractualLiabilities_019d3c9c-03bf-7084-be69-cbe5b0507c78_negatedLabel_en-US" xlink:label="lab_ck0000932782_LongTermContractualLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Long-term contractual liabilities</link:label>
    <link:label id="lab_ck0000932782_LongTermContractualLiabilities_label_en-US" xlink:label="lab_ck0000932782_LongTermContractualLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-Term Contractual Liabilities</link:label>
    <link:label id="lab_ck0000932782_LongTermContractualLiabilities_documentation_en-US" xlink:label="lab_ck0000932782_LongTermContractualLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Long-Term Contractual Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LongTermContractualLiabilities" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LongTermContractualLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LongTermContractualLiabilities" xlink:to="lab_ck0000932782_LongTermContractualLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProfitSharingDutyRemainingBalancePayable_019b46bd-0460-7265-8c18-091b279a1c21_terseLabel_en-US" xlink:label="lab_ck0000932782_ProfitSharingDutyRemainingBalancePayable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Profit sharing duty balance amount</link:label>
    <link:label id="lab_ck0000932782_ProfitSharingDutyRemainingBalancePayable_label_en-US" xlink:label="lab_ck0000932782_ProfitSharingDutyRemainingBalancePayable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit Sharing Duty Remaining Balance Payable</link:label>
    <link:label id="lab_ck0000932782_ProfitSharingDutyRemainingBalancePayable_documentation_en-US" xlink:label="lab_ck0000932782_ProfitSharingDutyRemainingBalancePayable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Profit sharing duty remaining balance payable.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProfitSharingDutyRemainingBalancePayable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProfitSharingDutyRemainingBalancePayable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProfitSharingDutyRemainingBalancePayable" xlink:to="lab_ck0000932782_ProfitSharingDutyRemainingBalancePayable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_GeneralRate_019d3d82-3809-756e-9315-8011dd5c7949_terseLabel_en-US" xlink:label="lab_ck0000932782_GeneralRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">General rate</link:label>
    <link:label id="lab_ck0000932782_GeneralRate_label_en-US" xlink:label="lab_ck0000932782_GeneralRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">General Rate</link:label>
    <link:label id="lab_ck0000932782_GeneralRate_documentation_en-US" xlink:label="lab_ck0000932782_GeneralRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">General Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GeneralRate" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GeneralRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_GeneralRate" xlink:to="lab_ck0000932782_GeneralRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfFinancialInstrumentsByTypeOfInterestRateTable_019b46bd-05e4-71ea-9dc9-7b55d84f8ccf_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfFinancialInstrumentsByTypeOfInterestRateTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of financial instruments by type of interest rate [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfFinancialInstrumentsByTypeOfInterestRateTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfFinancialInstrumentsByTypeOfInterestRateTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of financial instruments by type of interest rate [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFinancialInstrumentsByTypeOfInterestRateTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialInstrumentsByTypeOfInterestRateTable"/>
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    <link:label id="lab_ck0000932782_ProvisionsForTrailsInProcessAdditionsAgainstExpenses_label_en-US" xlink:label="lab_ck0000932782_ProvisionsForTrailsInProcessAdditionsAgainstExpenses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provisions For Trails In Process Additions Against Expenses</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForTrailsInProcessAdditionsAgainstExpenses_documentation_en-US" xlink:label="lab_ck0000932782_ProvisionsForTrailsInProcessAdditionsAgainstExpenses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Provisions for trails in process additions against expenses.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProvisionsForTrailsInProcessAdditionsAgainstExpenses" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProvisionsForTrailsInProcessAdditionsAgainstExpenses"/>
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    <link:label id="lab_srt_NonGuarantorSubsidiariesMember_019b46bd-0684-7a2b-8172-0fbc875baa3f_terseLabel_en-US" xlink:label="lab_srt_NonGuarantorSubsidiariesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-guarantor subsidiaries</link:label>
    <link:label id="lab_srt_NonGuarantorSubsidiariesMember_label_en-US" xlink:label="lab_srt_NonGuarantorSubsidiariesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-Guarantor Subsidiaries [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_NonGuarantorSubsidiariesMember" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_NonGuarantorSubsidiariesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_NonGuarantorSubsidiariesMember" xlink:to="lab_srt_NonGuarantorSubsidiariesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseProductionValue_019b46bd-0684-7bda-bb1b-50df4ef09aa6_terseLabel_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseProductionValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Production value</link:label>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseProductionValue_label_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseProductionValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit-sharing duty expense production value</link:label>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseProductionValue_documentation_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseProductionValue" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Profit-sharing duty expense production value.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProfitsharingDutyExpenseProductionValue" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProfitsharingDutyExpenseProductionValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProfitsharingDutyExpenseProductionValue" xlink:to="lab_ck0000932782_ProfitsharingDutyExpenseProductionValue" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationDomain_019b46bd-053d-76f0-a46c-e1f5004834a5_terseLabel_en-US" xlink:label="lab_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement of comprehensive income, profit or loss location [Domain]</link:label>
    <link:label id="lab_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationDomain_label_en-US" xlink:label="lab_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of comprehensive income, profit or loss location [Domain]</link:label>
    <link:label id="lab_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationDomain_documentation_en-US" xlink:label="lab_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Statement of comprehensive income, profit or loss location [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationDomain" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationDomain" xlink:to="lab_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationDomain" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_DisclosureOfIncomeTaxesLineItems_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfIncomeTaxesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Income Taxes [line items]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfIncomeTaxesLineItems_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfIncomeTaxesLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Line items represent concepts included in income taxes.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfIncomeTaxesLineItems" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfIncomeTaxesLineItems"/>
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    <link:label id="lab_ck0000932782_AccretionOfDiscountOfPretaxNetCashFlows_019b46bd-05e4-796e-8673-c9e0d28be17d_negatedTerseLabel_en-US" xlink:label="lab_ck0000932782_AccretionOfDiscountOfPretaxNetCashFlows" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Accretion of discount of pre-tax net cash flows</link:label>
    <link:label id="lab_ck0000932782_AccretionOfDiscountOfPretaxNetCashFlows_label_en-US" xlink:label="lab_ck0000932782_AccretionOfDiscountOfPretaxNetCashFlows" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accretion Of Discount Of Pretax Net Cash Flows</link:label>
    <link:label id="lab_ck0000932782_AccretionOfDiscountOfPretaxNetCashFlows_documentation_en-US" xlink:label="lab_ck0000932782_AccretionOfDiscountOfPretaxNetCashFlows" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Accretion of discount of pretax net cash flows.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AccretionOfDiscountOfPretaxNetCashFlows" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AccretionOfDiscountOfPretaxNetCashFlows"/>
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    <link:label id="lab_ifrs-full_PercentageOfReasonablyPossibleDecreaseInActuarialAssumption_label_en-US" xlink:label="lab_ifrs-full_PercentageOfReasonablyPossibleDecreaseInActuarialAssumption" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage of reasonably possible decrease in actuarial assumption</link:label>
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    <link:label id="lab_ck0000932782_CertificatesOfContribution_019b46bd-05e4-7bc5-82c7-d367bda91800_periodEndLabel_en-US" xlink:label="lab_ck0000932782_CertificatesOfContribution" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Certificates of Contribution, Ending Balance</link:label>
    <link:label id="lab_ck0000932782_CertificatesOfContribution_label_en-US" xlink:label="lab_ck0000932782_CertificatesOfContribution" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Certificates of Contribution</link:label>
    <link:label id="lab_ck0000932782_CertificatesOfContribution_documentation_en-US" xlink:label="lab_ck0000932782_CertificatesOfContribution" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Certificates of Contribution</link:label>
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    <link:label id="lab_ifrs-full_ClassesOfContingentLiabilitiesDomain_019b46bd-053d-76c2-ae3f-3ff549f7a277_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfContingentLiabilitiesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of contingent liabilities</link:label>
    <link:label id="lab_ifrs-full_ClassesOfContingentLiabilitiesDomain_label_en-US" xlink:label="lab_ifrs-full_ClassesOfContingentLiabilitiesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of contingent liabilities [domain]</link:label>
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    <link:label id="lab_ck0000932782_MineralCarbonMember_label_en-US" xlink:label="lab_ck0000932782_MineralCarbonMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mineral Carbon [Member]</link:label>
    <link:label id="lab_ck0000932782_MineralCarbonMember_documentation_en-US" xlink:label="lab_ck0000932782_MineralCarbonMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Mineral carbon.</link:label>
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    <link:label id="lab_ck0000932782_AdministrativeExpenseOnPropertyPlantAndEquipment_documentation_en-US" xlink:label="lab_ck0000932782_AdministrativeExpenseOnPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Administrative expenses on property plant and equipment.</link:label>
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    <link:label id="lab_ck0000932782_ProceedsFromGovernmentGrantsAndInterestClassifiedAsFinancingActivities_label_en-US" xlink:label="lab_ck0000932782_ProceedsFromGovernmentGrantsAndInterestClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds From Government Grants And Interest Classified As Financing Activities</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsAbstract_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of quantitative information about right-of-use assets [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsAbstract"/>
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    <link:label id="lab_ck0000932782_ChevronMember_019b46bd-045f-7ec8-bdd9-0087ea571e7a_terseLabel_en-US" xlink:label="lab_ck0000932782_ChevronMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Chevron</link:label>
    <link:label id="lab_ck0000932782_ChevronMember_label_en-US" xlink:label="lab_ck0000932782_ChevronMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Chevron [member]</link:label>
    <link:label id="lab_ck0000932782_ChevronMember_documentation_en-US" xlink:label="lab_ck0000932782_ChevronMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Chevron.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ChevronMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ChevronMember"/>
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    <link:label id="lab_ck0000932782_PoundsSterlingMember_019b46bd-05e4-75c4-9912-54e6803fadc2_terseLabel_en-US" xlink:label="lab_ck0000932782_PoundsSterlingMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pounds sterling</link:label>
    <link:label id="lab_ck0000932782_PoundsSterlingMember_label_en-US" xlink:label="lab_ck0000932782_PoundsSterlingMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pounds Sterling [member]</link:label>
    <link:label id="lab_ck0000932782_PoundsSterlingMember_documentation_en-US" xlink:label="lab_ck0000932782_PoundsSterlingMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Pounds Sterling.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PoundsSterlingMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PoundsSterlingMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PoundsSterlingMember" xlink:to="lab_ck0000932782_PoundsSterlingMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_JapaneseYenMember_019b46bd-05e5-7758-a27a-d1fb854fa222_terseLabel_en-US" xlink:label="lab_ck0000932782_JapaneseYenMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Japanese yen</link:label>
    <link:label id="lab_ck0000932782_JapaneseYenMember_label_en-US" xlink:label="lab_ck0000932782_JapaneseYenMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Japanese yen [member]</link:label>
    <link:label id="lab_ck0000932782_JapaneseYenMember_documentation_en-US" xlink:label="lab_ck0000932782_JapaneseYenMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Japanese yen [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_JapaneseYenMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_JapaneseYenMember"/>
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    <link:label id="lab_ck0000932782_AmountOfDryGasReserveAddedToOffset_019b46bd-053c-7a7d-aec3-981510301b25_terseLabel_en-US" xlink:label="lab_ck0000932782_AmountOfDryGasReserveAddedToOffset" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Developed and undeveloped dry gas reserves added to offset</link:label>
    <link:label id="lab_ck0000932782_AmountOfDryGasReserveAddedToOffset_label_en-US" xlink:label="lab_ck0000932782_AmountOfDryGasReserveAddedToOffset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amount Of Dry Gas Reserve Added To Offset</link:label>
    <link:label id="lab_ck0000932782_AmountOfDryGasReserveAddedToOffset_documentation_en-US" xlink:label="lab_ck0000932782_AmountOfDryGasReserveAddedToOffset" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of dry gas reserve added to offset.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AmountOfDryGasReserveAddedToOffset" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AmountOfDryGasReserveAddedToOffset"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AmountOfDryGasReserveAddedToOffset" xlink:to="lab_ck0000932782_AmountOfDryGasReserveAddedToOffset" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TradeAndOtherCurrentReceivablesAndDerivativeFinancialInstruments_019b46bd-0715-7c68-8ce7-d916ee3fac88_verboseLabel_en-US" xlink:label="lab_ck0000932782_TradeAndOtherCurrentReceivablesAndDerivativeFinancialInstruments" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Trade and other accounts receivable, derivative financial instruments and other current assets</link:label>
    <link:label id="lab_ck0000932782_TradeAndOtherCurrentReceivablesAndDerivativeFinancialInstruments_label_en-US" xlink:label="lab_ck0000932782_TradeAndOtherCurrentReceivablesAndDerivativeFinancialInstruments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trade And Other Current Receivables And Derivative Financial Instruments</link:label>
    <link:label id="lab_ck0000932782_TradeAndOtherCurrentReceivablesAndDerivativeFinancialInstruments_documentation_en-US" xlink:label="lab_ck0000932782_TradeAndOtherCurrentReceivablesAndDerivativeFinancialInstruments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Trade and other current receivables and derivative financial instruments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TradeAndOtherCurrentReceivablesAndDerivativeFinancialInstruments" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TradeAndOtherCurrentReceivablesAndDerivativeFinancialInstruments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TradeAndOtherCurrentReceivablesAndDerivativeFinancialInstruments" xlink:to="lab_ck0000932782_TradeAndOtherCurrentReceivablesAndDerivativeFinancialInstruments" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGas_019b46bd-0684-709f-8bf5-964707ae4ddb_terseLabel_en-US" xlink:label="lab_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGas" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Change</link:label>
    <link:label id="lab_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGas_label_en-US" xlink:label="lab_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGas" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas</link:label>
    <link:label id="lab_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGas_documentation_en-US" xlink:label="lab_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGas" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Standardized measure of discounted future net cash flow of proved oil and gas.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGas" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGas"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGas" xlink:to="lab_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGas" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FinancialInstrumentsNotionalVolume_019b46bd-0715-74e5-9a55-b1e0140621c5_terseLabel_en-US" xlink:label="lab_ck0000932782_FinancialInstrumentsNotionalVolume" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Volume (MMb)</link:label>
    <link:label id="lab_ck0000932782_FinancialInstrumentsNotionalVolume_label_en-US" xlink:label="lab_ck0000932782_FinancialInstrumentsNotionalVolume" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Instruments Notional Volume</link:label>
    <link:label id="lab_ck0000932782_FinancialInstrumentsNotionalVolume_documentation_en-US" xlink:label="lab_ck0000932782_FinancialInstrumentsNotionalVolume" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial instruments notional volume.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FinancialInstrumentsNotionalVolume" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FinancialInstrumentsNotionalVolume"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FinancialInstrumentsNotionalVolume" xlink:to="lab_ck0000932782_FinancialInstrumentsNotionalVolume" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ChangesInIntangibleAssetsAndGoodwillAbstract_019b46bd-0715-7c3e-a0df-f273418c3b2d_terseLabel_en-US" xlink:label="lab_ifrs-full_ChangesInIntangibleAssetsAndGoodwillAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Wells unassigned to a reserve:</link:label>
    <link:label id="lab_ifrs-full_ChangesInIntangibleAssetsAndGoodwillAbstract_label_en-US" xlink:label="lab_ifrs-full_ChangesInIntangibleAssetsAndGoodwillAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Changes in intangible assets and goodwill [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ChangesInIntangibleAssetsAndGoodwillAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ChangesInIntangibleAssetsAndGoodwillAbstract"/>
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    <link:label id="lab_ck0000932782_DisclosureOfSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesLineItems_019b46bd-0715-7b77-bd5c-fe7f773b3bd2_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of supplementary information on oil and gas exploration and production activities [Line Items]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesLineItems_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of supplementary information on oil and gas exploration and production activities [Line Items]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesLineItems_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of supplementary information on oil and gas exploration and production activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesLineItems" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesLineItems" xlink:to="lab_ck0000932782_DisclosureOfSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AveragePricesOfCrudeOilExports_019b46bd-053c-7a82-ab19-1d58e2a92720_terseLabel_en-US" xlink:label="lab_ck0000932782_AveragePricesOfCrudeOilExports" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average prices of crude oil exports</link:label>
    <link:label id="lab_ck0000932782_AveragePricesOfCrudeOilExports_label_en-US" xlink:label="lab_ck0000932782_AveragePricesOfCrudeOilExports" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Average Prices Of Crude Oil Exports</link:label>
    <link:label id="lab_ck0000932782_AveragePricesOfCrudeOilExports_documentation_en-US" xlink:label="lab_ck0000932782_AveragePricesOfCrudeOilExports" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Average prices of crude oil exports.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AveragePricesOfCrudeOilExports" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AveragePricesOfCrudeOilExports"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AveragePricesOfCrudeOilExports" xlink:to="lab_ck0000932782_AveragePricesOfCrudeOilExports" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LegalEntityDomain_019b46bd-05e4-7577-8264-ebb49688c5a0_terseLabel_en-US" xlink:label="lab_ck0000932782_LegalEntityDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Legal Entity [Domain]</link:label>
    <link:label id="lab_ck0000932782_LegalEntityDomain_label_en-US" xlink:label="lab_ck0000932782_LegalEntityDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Legal Entity [Domain]</link:label>
    <link:label id="lab_ck0000932782_LegalEntityDomain_documentation_en-US" xlink:label="lab_ck0000932782_LegalEntityDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Legal entity.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LegalEntityDomain" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LegalEntityDomain"/>
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    <link:label id="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAccountPayable_019b46bd-0684-75db-a703-02eddc20db78_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAccountPayable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable and accrued expenses</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAccountPayable_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAccountPayable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments for increase (decrease) in trade accounts payable</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAccountPayable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAccountPayable"/>
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    <link:label id="lab_ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory_019b46bd-0715-7ab8-a243-8761e2d1392f_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent Events</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of events after reporting period [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfEventsAfterReportingPeriodExplanatory"/>
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    <link:label id="lab_ck0000932782_TotalMember_019b46bd-0684-7c93-8336-590fb1f6d5c1_terseLabel_en-US" xlink:label="lab_ck0000932782_TotalMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ck0000932782_TotalMember_label_en-US" xlink:label="lab_ck0000932782_TotalMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Total [Member]</link:label>
    <link:label id="lab_ck0000932782_TotalMember_documentation_en-US" xlink:label="lab_ck0000932782_TotalMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Total [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TotalMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TotalMember"/>
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    <link:label id="lab_ck0000932782_IncomeExpensesDefinedContributionScheme_019b46bd-05e4-7e03-b1fd-132254192137_terseLabel_en-US" xlink:label="lab_ck0000932782_IncomeExpensesDefinedContributionScheme" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expense in the income statement (net cost for the period, CD-guarantee)</link:label>
    <link:label id="lab_ck0000932782_IncomeExpensesDefinedContributionScheme_label_en-US" xlink:label="lab_ck0000932782_IncomeExpensesDefinedContributionScheme" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Expenses Defined Contribution Scheme</link:label>
    <link:label id="lab_ck0000932782_IncomeExpensesDefinedContributionScheme_documentation_en-US" xlink:label="lab_ck0000932782_IncomeExpensesDefinedContributionScheme" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Income expenses defined contribution scheme</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncomeExpensesDefinedContributionScheme" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncomeExpensesDefinedContributionScheme"/>
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    <link:label id="lab_ck0000932782_ApplicableMarginRate_019d8acd-952b-726f-ba84-05c110ab93d8_terseLabel_en-US" xlink:label="lab_ck0000932782_ApplicableMarginRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Applicable margin rate</link:label>
    <link:label id="lab_ck0000932782_ApplicableMarginRate_label_en-US" xlink:label="lab_ck0000932782_ApplicableMarginRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Applicable Margin Rate</link:label>
    <link:label id="lab_ck0000932782_ApplicableMarginRate_documentation_en-US" xlink:label="lab_ck0000932782_ApplicableMarginRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Applicable Margin Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ApplicableMarginRate" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ApplicableMarginRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ApplicableMarginRate" xlink:to="lab_ck0000932782_ApplicableMarginRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CapitalizationOfFinancialExpenseIncreaseDecreasePropertyPlantAndEquipment_019b46bd-0684-7546-bb40-b27a7a12f9bd_terseLabel_en-US" xlink:label="lab_ck0000932782_CapitalizationOfFinancialExpenseIncreaseDecreasePropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capitalization</link:label>
    <link:label id="lab_ck0000932782_CapitalizationOfFinancialExpenseIncreaseDecreasePropertyPlantAndEquipment_label_en-US" xlink:label="lab_ck0000932782_CapitalizationOfFinancialExpenseIncreaseDecreasePropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capitalization of financial expense increase (decrease) property plant and equipment</link:label>
    <link:label id="lab_ck0000932782_CapitalizationOfFinancialExpenseIncreaseDecreasePropertyPlantAndEquipment_documentation_en-US" xlink:label="lab_ck0000932782_CapitalizationOfFinancialExpenseIncreaseDecreasePropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Capitalization of financial expense increase (decrease) property plant and equipment.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CapitalizationOfFinancialExpenseIncreaseDecreasePropertyPlantAndEquipment" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CapitalizationOfFinancialExpenseIncreaseDecreasePropertyPlantAndEquipment"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CapitalizationOfFinancialExpenseIncreaseDecreasePropertyPlantAndEquipment" xlink:to="lab_ck0000932782_CapitalizationOfFinancialExpenseIncreaseDecreasePropertyPlantAndEquipment" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfProvedReserveExplanatory_019b46bd-05e5-7333-8488-008728adb19c_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfProvedReserveExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Oil and Gas Proved Reserves</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfProvedReserveExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfProvedReserveExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Proved Reserve [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfProvedReserveExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfProvedReserveExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of proved reserve.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfProvedReserveExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfProvedReserveExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfProvedReserveExplanatory" xlink:to="lab_ck0000932782_DisclosureOfProvedReserveExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract_019b46bd-0684-73d3-a03c-f43acca5fd45_terseLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating activities:</link:label>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract_019b46bd-0684-7e00-b0a9-935f84dd74bc_verboseLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Operating activities:</link:label>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract_label_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash flows from (used in) operating activities [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:to="lab_ifrs-full_CashFlowsFromUsedInOperatingActivitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ActuarialLossesGainsOnEmployeeBenefitsEffectMember_019b46bd-0684-7a1b-9889-27678629cb8e_terseLabel_en-US" xlink:label="lab_ck0000932782_ActuarialLossesGainsOnEmployeeBenefitsEffectMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Actuarial (losses) gains on employee benefits effect</link:label>
    <link:label id="lab_ck0000932782_ActuarialLossesGainsOnEmployeeBenefitsEffectMember_label_en-US" xlink:label="lab_ck0000932782_ActuarialLossesGainsOnEmployeeBenefitsEffectMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Actuarial (losses) gains on employee benefits effect [member]</link:label>
    <link:label id="lab_ck0000932782_ActuarialLossesGainsOnEmployeeBenefitsEffectMember_documentation_en-US" xlink:label="lab_ck0000932782_ActuarialLossesGainsOnEmployeeBenefitsEffectMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Actuarial (losses) gains on employee benefits effect.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ActuarialLossesGainsOnEmployeeBenefitsEffectMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ActuarialLossesGainsOnEmployeeBenefitsEffectMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ActuarialLossesGainsOnEmployeeBenefitsEffectMember" xlink:to="lab_ck0000932782_ActuarialLossesGainsOnEmployeeBenefitsEffectMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_019b46bd-053d-7645-b72f-bb4f3307df73_terseLabel_en-US" xlink:label="lab_ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Profit sharing in associates</link:label>
    <link:label id="lab_ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_019bd698-57a8-7da7-afd7-79e143ee604d_netLabel_en-US" xlink:label="lab_ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Profit (loss) sharing in associates</link:label>
    <link:label id="lab_ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_label_en-US" xlink:label="lab_ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share of profit (loss) of associates and joint ventures accounted for using equity method</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod"/>
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    <link:label id="lab_ck0000932782_FixedRateUdisMember_019b46bd-0715-704a-8b35-0172e981584f_terseLabel_en-US" xlink:label="lab_ck0000932782_FixedRateUdisMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed rate (UDIs)</link:label>
    <link:label id="lab_ck0000932782_FixedRateUdisMember_label_en-US" xlink:label="lab_ck0000932782_FixedRateUdisMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed rate (UDIs) [member]</link:label>
    <link:label id="lab_ck0000932782_FixedRateUdisMember_documentation_en-US" xlink:label="lab_ck0000932782_FixedRateUdisMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed rate (UDIs).</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FixedRateUdisMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FixedRateUdisMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FixedRateUdisMember" xlink:to="lab_ck0000932782_FixedRateUdisMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedReserves_019b46bd-05e4-77f9-b6e8-a95857e526bd_terseLabel_en-US" xlink:label="lab_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Extensions and discoveries</link:label>
    <link:label id="lab_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedReserves_label_en-US" xlink:label="lab_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Extensions and discoveries of proved developed reserves</link:label>
    <link:label id="lab_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedReserves_documentation_en-US" xlink:label="lab_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Extensions and discoveries of proved developed reserves.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedReserves" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedReserves"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedReserves" xlink:to="lab_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedReserves" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_SellingGeneralAndAdministrativeExpense_019b46bd-0684-73d8-b1b5-48be49a242e1_totalLabel_en-US" xlink:label="lab_ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total general expenses</link:label>
    <link:label id="lab_ifrs-full_SellingGeneralAndAdministrativeExpense_label_en-US" xlink:label="lab_ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Selling, general and administrative expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SellingGeneralAndAdministrativeExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:to="lab_ifrs-full_SellingGeneralAndAdministrativeExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_DocumentPeriodEndDate_019b46bd-05e4-771b-826f-f4b60af22f65_terseLabel_en-US" xlink:label="lab_dei_DocumentPeriodEndDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Period End Date</link:label>
    <link:label id="lab_dei_DocumentPeriodEndDate_label_en-US" xlink:label="lab_dei_DocumentPeriodEndDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Period End Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentPeriodEndDate" xlink:to="lab_dei_DocumentPeriodEndDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ReservesProductionRatioOfProvedReservesPeriod_019b46bd-053c-772d-8ac5-a240f2793026_terseLabel_en-US" xlink:label="lab_ck0000932782_ReservesProductionRatioOfProvedReservesPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reserves production ratio of proved reserves, period</link:label>
    <link:label id="lab_ck0000932782_ReservesProductionRatioOfProvedReservesPeriod_label_en-US" xlink:label="lab_ck0000932782_ReservesProductionRatioOfProvedReservesPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reserves Production Ratio of Proved Reserves, Period</link:label>
    <link:label id="lab_ck0000932782_ReservesProductionRatioOfProvedReservesPeriod_documentation_en-US" xlink:label="lab_ck0000932782_ReservesProductionRatioOfProvedReservesPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Reserves production ratio of proved reserves, period.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ReservesProductionRatioOfProvedReservesPeriod" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ReservesProductionRatioOfProvedReservesPeriod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ReservesProductionRatioOfProvedReservesPeriod" xlink:to="lab_ck0000932782_ReservesProductionRatioOfProvedReservesPeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_019b46bd-05e4-73b0-8847-76d058c8a4db_terseLabel_en-US" xlink:label="lab_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-adjusting events after reporting period</link:label>
    <link:label id="lab_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain_label_en-US" xlink:label="lab_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-adjusting events after reporting period [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NonadjustingEventsAfterReportingPeriodDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain" xlink:to="lab_ifrs-full_NonadjustingEventsAfterReportingPeriodDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IepsTaxSaleOfAutomotiveFuelsMember_019b46bd-0715-7b85-b00c-0e3370ac48f6_terseLabel_en-US" xlink:label="lab_ck0000932782_IepsTaxSaleOfAutomotiveFuelsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">IEPS Tax on the Sale of Automotive Fuels</link:label>
    <link:label id="lab_ck0000932782_IepsTaxSaleOfAutomotiveFuelsMember_label_en-US" xlink:label="lab_ck0000932782_IepsTaxSaleOfAutomotiveFuelsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">IEPS tax sale of automotive fuels [member]</link:label>
    <link:label id="lab_ck0000932782_IepsTaxSaleOfAutomotiveFuelsMember_documentation_en-US" xlink:label="lab_ck0000932782_IepsTaxSaleOfAutomotiveFuelsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">IEPS tax sale of automotive fuels [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IepsTaxSaleOfAutomotiveFuelsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IepsTaxSaleOfAutomotiveFuelsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IepsTaxSaleOfAutomotiveFuelsMember" xlink:to="lab_ck0000932782_IepsTaxSaleOfAutomotiveFuelsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IncreaseOfProvedReserves_019b46bd-05e4-7893-a6f6-a2653248ca9b_terseLabel_en-US" xlink:label="lab_ck0000932782_IncreaseOfProvedReserves" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase of proved reserves</link:label>
    <link:label id="lab_ck0000932782_IncreaseOfProvedReserves_label_en-US" xlink:label="lab_ck0000932782_IncreaseOfProvedReserves" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase of Proved Reserves</link:label>
    <link:label id="lab_ck0000932782_IncreaseOfProvedReserves_documentation_en-US" xlink:label="lab_ck0000932782_IncreaseOfProvedReserves" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Increase of Proved Reserves</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncreaseOfProvedReserves" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncreaseOfProvedReserves"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IncreaseOfProvedReserves" xlink:to="lab_ck0000932782_IncreaseOfProvedReserves" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ScheduleOfAmortizationOfLongTermContractualLiabilitiesTableTextBlock_019d8ab5-a29f-7d35-b0aa-fd18b11e1e29_terseLabel_en-US" xlink:label="lab_ck0000932782_ScheduleOfAmortizationOfLongTermContractualLiabilitiesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Amortization of Long-Term Contractual Liabilities</link:label>
    <link:label id="lab_ck0000932782_ScheduleOfAmortizationOfLongTermContractualLiabilitiesTableTextBlock_label_en-US" xlink:label="lab_ck0000932782_ScheduleOfAmortizationOfLongTermContractualLiabilitiesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule Of Amortization of Long-Term Contractual Liabilities [Table Text Block]</link:label>
    <link:label id="lab_ck0000932782_ScheduleOfAmortizationOfLongTermContractualLiabilitiesTableTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_ScheduleOfAmortizationOfLongTermContractualLiabilitiesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule Of Amortization of Long-Term Contractual Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ScheduleOfAmortizationOfLongTermContractualLiabilitiesTableTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ScheduleOfAmortizationOfLongTermContractualLiabilitiesTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ScheduleOfAmortizationOfLongTermContractualLiabilitiesTableTextBlock" xlink:to="lab_ck0000932782_ScheduleOfAmortizationOfLongTermContractualLiabilitiesTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ARatingMember_019b46bd-05e4-76f5-bc7c-67bdded02638_terseLabel_en-US" xlink:label="lab_ck0000932782_ARatingMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">A</link:label>
    <link:label id="lab_ck0000932782_ARatingMember_label_en-US" xlink:label="lab_ck0000932782_ARatingMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">A Rating [Member]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LandMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LandMember"/>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PersonnelServicesExpense" xlink:to="lab_ck0000932782_PersonnelServicesExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FixedInterestRateMember_019d3db0-1859-70d5-8e12-6c20b53dfece_terseLabel_en-US" xlink:label="lab_ifrs-full_FixedInterestRateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed interest rate</link:label>
    <link:label id="lab_ifrs-full_FixedInterestRateMember_label_en-US" xlink:label="lab_ifrs-full_FixedInterestRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed interest rate [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FixedInterestRateMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FixedInterestRateMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FixedInterestRateMember" xlink:to="lab_ifrs-full_FixedInterestRateMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PemexCorporateMember_019b46bd-053c-7745-bcd2-58c5144f9b91_terseLabel_en-US" xlink:label="lab_ck0000932782_PemexCorporateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pemex corporate</link:label>
    <link:label id="lab_ck0000932782_PemexCorporateMember_label_en-US" xlink:label="lab_ck0000932782_PemexCorporateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pemex Corporate [member]</link:label>
    <link:label id="lab_ck0000932782_PemexCorporateMember_documentation_en-US" xlink:label="lab_ck0000932782_PemexCorporateMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Pemex corporate.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PemexCorporateMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PemexCorporateMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PemexCorporateMember" xlink:to="lab_ck0000932782_PemexCorporateMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProfitLossBeforeTax_019b46bd-053c-7517-b25b-423f4cd6c6a3_totalLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossBeforeTax" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">(Loss) income before duties, taxes and other</link:label>
    <link:label id="lab_ifrs-full_ProfitLossBeforeTax_label_en-US" xlink:label="lab_ifrs-full_ProfitLossBeforeTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit (loss) before tax</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossBeforeTax" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossBeforeTax"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProfitLossBeforeTax" xlink:to="lab_ifrs-full_ProfitLossBeforeTax" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ResultsOfOperationsIncomeLossFromOilAndGasProducingActivities_019b46bd-0684-795e-abf9-8ac01af73f8d_terseLabel_en-US" xlink:label="lab_ck0000932782_ResultsOfOperationsIncomeLossFromOilAndGasProducingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Results of operations for oil and gas producing activities</link:label>
    <link:label id="lab_ck0000932782_ResultsOfOperationsIncomeLossFromOilAndGasProducingActivities_label_en-US" xlink:label="lab_ck0000932782_ResultsOfOperationsIncomeLossFromOilAndGasProducingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Results of Operations, Income (Loss) from Oil and Gas Producing Activities</link:label>
    <link:label id="lab_ck0000932782_ResultsOfOperationsIncomeLossFromOilAndGasProducingActivities_documentation_en-US" xlink:label="lab_ck0000932782_ResultsOfOperationsIncomeLossFromOilAndGasProducingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Results of Operations, Income (Loss) from Oil and Gas Producing Activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ResultsOfOperationsIncomeLossFromOilAndGasProducingActivities" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ResultsOfOperationsIncomeLossFromOilAndGasProducingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ResultsOfOperationsIncomeLossFromOilAndGasProducingActivities" xlink:to="lab_ck0000932782_ResultsOfOperationsIncomeLossFromOilAndGasProducingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfEquityLineItems_019b46bd-0715-7d57-849e-a4471fe7b7f6_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfEquityLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of equity [line items]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfEquityLineItems_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfEquityLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of equity [line items]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfEquityLineItems_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfEquityLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of equity [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfEquityLineItems" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfEquityLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfEquityLineItems" xlink:to="lab_ck0000932782_DisclosureOfEquityLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LocalCountryMember_019b46bd-0715-73a8-8c23-63c4d1f8aedd_terseLabel_en-US" xlink:label="lab_ck0000932782_LocalCountryMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Local</link:label>
    <link:label id="lab_ck0000932782_LocalCountryMember_label_en-US" xlink:label="lab_ck0000932782_LocalCountryMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Local Country [member]</link:label>
    <link:label id="lab_ck0000932782_LocalCountryMember_documentation_en-US" xlink:label="lab_ck0000932782_LocalCountryMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Local Country.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LocalCountryMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LocalCountryMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LocalCountryMember" xlink:to="lab_ck0000932782_LocalCountryMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LeaseLiabilitiesRollForward_019b46bd-0684-79f9-b674-8d371b6b41d8_terseLabel_en-US" xlink:label="lab_ck0000932782_LeaseLiabilitiesRollForward" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease liabilities [Roll Forward]</link:label>
    <link:label id="lab_ck0000932782_LeaseLiabilitiesRollForward_label_en-US" xlink:label="lab_ck0000932782_LeaseLiabilitiesRollForward" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease liabilities [Roll Forward]</link:label>
    <link:label id="lab_ck0000932782_LeaseLiabilitiesRollForward_documentation_en-US" xlink:label="lab_ck0000932782_LeaseLiabilitiesRollForward" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LeaseLiabilitiesRollForward" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LeaseLiabilitiesRollForward"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LeaseLiabilitiesRollForward" xlink:to="lab_ck0000932782_LeaseLiabilitiesRollForward" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MoreThan91OctanesGasolineMember_019b46bd-05e5-7a89-9f61-52be415af1d3_terseLabel_en-US" xlink:label="lab_ck0000932782_MoreThan91OctanesGasolineMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">More Than 91 Octanes Gasoline</link:label>
    <link:label id="lab_ck0000932782_MoreThan91OctanesGasolineMember_label_en-US" xlink:label="lab_ck0000932782_MoreThan91OctanesGasolineMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">More Than 91 Octanes Gasoline [Member]</link:label>
    <link:label id="lab_ck0000932782_MoreThan91OctanesGasolineMember_documentation_en-US" xlink:label="lab_ck0000932782_MoreThan91OctanesGasolineMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">More than 91 octanes gasoline.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MoreThan91OctanesGasolineMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MoreThan91OctanesGasolineMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MoreThan91OctanesGasolineMember" xlink:to="lab_ck0000932782_MoreThan91OctanesGasolineMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FuturesContractMember_019b46bd-0684-7b08-8c7d-359096a1c5c3_terseLabel_en-US" xlink:label="lab_ifrs-full_FuturesContractMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Futures</link:label>
    <link:label id="lab_ifrs-full_FuturesContractMember_019b46bd-0684-7cd7-a64e-f793d382f028_verboseLabel_en-US" xlink:label="lab_ifrs-full_FuturesContractMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Futures</link:label>
    <link:label id="lab_ifrs-full_FuturesContractMember_label_en-US" xlink:label="lab_ifrs-full_FuturesContractMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Futures contract [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FuturesContractMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FuturesContractMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FuturesContractMember" xlink:to="lab_ifrs-full_FuturesContractMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfOtherProvisionsTable_019b46bd-045f-7ba4-8f06-e9ab5399d17c_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfOtherProvisionsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of other provisions [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfOtherProvisionsTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfOtherProvisionsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of other provisions [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfOtherProvisionsTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOtherProvisionsTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfOtherProvisionsTable" xlink:to="lab_ifrs-full_DisclosureOfOtherProvisionsTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TypeOfFinancingArrangementDomain_019b46bd-0684-746f-94fe-92e941fdbae8_terseLabel_en-US" xlink:label="lab_ck0000932782_TypeOfFinancingArrangementDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Type Of Financing Arrangement [Domain]</link:label>
    <link:label id="lab_ck0000932782_TypeOfFinancingArrangementDomain_label_en-US" xlink:label="lab_ck0000932782_TypeOfFinancingArrangementDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Type Of Financing Arrangement [Domain]</link:label>
    <link:label id="lab_ck0000932782_TypeOfFinancingArrangementDomain_documentation_en-US" xlink:label="lab_ck0000932782_TypeOfFinancingArrangementDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Type Of Financing Arrangement [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TypeOfFinancingArrangementDomain" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TypeOfFinancingArrangementDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TypeOfFinancingArrangementDomain" xlink:to="lab_ck0000932782_TypeOfFinancingArrangementDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfFinancialInstrumentsDomain_019b46bd-0684-7895-b3ea-cc4d3eb8d510_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfFinancialInstrumentsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of financial instruments</link:label>
    <link:label id="lab_ifrs-full_ClassesOfFinancialInstrumentsDomain_label_en-US" xlink:label="lab_ifrs-full_ClassesOfFinancialInstrumentsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of financial instruments [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialInstrumentsDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfFinancialInstrumentsDomain" xlink:to="lab_ifrs-full_ClassesOfFinancialInstrumentsDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionTwoNovember2025Member_019bb211-69c9-7e1d-8fab-26bf9500b5c7_terseLabel_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionTwoNovember2025Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Two, November 2025</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionTwoNovember2025Member_label_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionTwoNovember2025Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Two, November 2025 [Member]</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionTwoNovember2025Member_documentation_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionTwoNovember2025Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Two, November 2025</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StrengtheningOfFinancialPositionTwoNovember2025Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StrengtheningOfFinancialPositionTwoNovember2025Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_StrengtheningOfFinancialPositionTwoNovember2025Member" xlink:to="lab_ck0000932782_StrengtheningOfFinancialPositionTwoNovember2025Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AdditionsAgainstExpenses_019b46bd-05e4-7a12-a742-5cee5c284417_terseLabel_en-US" xlink:label="lab_ck0000932782_AdditionsAgainstExpenses" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additions against expenses</link:label>
    <link:label id="lab_ck0000932782_AdditionsAgainstExpenses_label_en-US" xlink:label="lab_ck0000932782_AdditionsAgainstExpenses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additions against Expenses</link:label>
    <link:label id="lab_ck0000932782_AdditionsAgainstExpenses_documentation_en-US" xlink:label="lab_ck0000932782_AdditionsAgainstExpenses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Additions against income.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AdditionsAgainstExpenses" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AdditionsAgainstExpenses"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AdditionsAgainstExpenses" xlink:to="lab_ck0000932782_AdditionsAgainstExpenses" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_HeavyFuelOilMember_019b46bd-0715-7edf-a2d5-9fe9cb1ea240_terseLabel_en-US" xlink:label="lab_ck0000932782_HeavyFuelOilMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Heavy fuel oil</link:label>
    <link:label id="lab_ck0000932782_HeavyFuelOilMember_label_en-US" xlink:label="lab_ck0000932782_HeavyFuelOilMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Heavy fuel oil [member]</link:label>
    <link:label id="lab_ck0000932782_HeavyFuelOilMember_documentation_en-US" xlink:label="lab_ck0000932782_HeavyFuelOilMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Heavy fuel oil.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_HeavyFuelOilMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_HeavyFuelOilMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_HeavyFuelOilMember" xlink:to="lab_ck0000932782_HeavyFuelOilMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AccountsReceivableInterCompany_019b46bd-05e4-7add-9e33-6fba98e71c33_terseLabel_en-US" xlink:label="lab_ck0000932782_AccountsReceivableInterCompany" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable&#8212;intercompany</link:label>
    <link:label id="lab_ck0000932782_AccountsReceivableInterCompany_label_en-US" xlink:label="lab_ck0000932782_AccountsReceivableInterCompany" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Receivable Inter Company</link:label>
    <link:label id="lab_ck0000932782_AccountsReceivableInterCompany_documentation_en-US" xlink:label="lab_ck0000932782_AccountsReceivableInterCompany" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Accounts receivable inter company.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AccountsReceivableInterCompany" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AccountsReceivableInterCompany"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AccountsReceivableInterCompany" xlink:to="lab_ck0000932782_AccountsReceivableInterCompany" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodIncreasedPercentage_019b46bd-0715-7769-802e-9e7b7ae32a8e_terseLabel_en-US" xlink:label="lab_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodIncreasedPercentage" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of developed and undeveloped dry gas reserves increased</link:label>
    <link:label id="lab_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodIncreasedPercentage_label_en-US" xlink:label="lab_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodIncreasedPercentage" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Developed And Undeveloped Dry Gas Reserves Net Period Increased Percentage</link:label>
    <link:label id="lab_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodIncreasedPercentage_documentation_en-US" xlink:label="lab_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodIncreasedPercentage" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Developed and undeveloped dry gas reserves net period increased percentage.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodIncreasedPercentage" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodIncreasedPercentage"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodIncreasedPercentage" xlink:to="lab_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodIncreasedPercentage" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NetForeignExchangeLoss_019b46bd-0684-70be-9518-4d25e831d09c_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_NetForeignExchangeLoss" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Net foreign exchange loss</link:label>
    <link:label id="lab_ifrs-full_NetForeignExchangeLoss_label_en-US" xlink:label="lab_ifrs-full_NetForeignExchangeLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net foreign exchange loss</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NetForeignExchangeLoss" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NetForeignExchangeLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NetForeignExchangeLoss" xlink:to="lab_ifrs-full_NetForeignExchangeLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RevenueFromRenderingOfServices_019b46bd-05e4-776a-b21e-0be7443a19a8_terseLabel_en-US" xlink:label="lab_ifrs-full_RevenueFromRenderingOfServices" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Services income</link:label>
    <link:label id="lab_ifrs-full_RevenueFromRenderingOfServices_label_en-US" xlink:label="lab_ifrs-full_RevenueFromRenderingOfServices" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue from rendering of services</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RevenueFromRenderingOfServices" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevenueFromRenderingOfServices"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RevenueFromRenderingOfServices" xlink:to="lab_ifrs-full_RevenueFromRenderingOfServices" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProductsAndServicesDomain_019b46bd-0684-732e-a4c5-de1e66334d81_verboseLabel_en-US" xlink:label="lab_ifrs-full_ProductsAndServicesDomain" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Major products and services</link:label>
    <link:label id="lab_ifrs-full_ProductsAndServicesDomain_019b46bd-0684-7401-b306-dd71fa2c910f_terseLabel_en-US" xlink:label="lab_ifrs-full_ProductsAndServicesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Products and services</link:label>
    <link:label id="lab_ifrs-full_ProductsAndServicesDomain_label_en-US" xlink:label="lab_ifrs-full_ProductsAndServicesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Products and services [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProductsAndServicesDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProductsAndServicesDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProductsAndServicesDomain" xlink:to="lab_ifrs-full_ProductsAndServicesDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfOperatingSegmentsExplanatory_019b46bd-0684-7d0d-adcd-9df2121a717f_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfOperatingSegmentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Condensed Financial Information of Segments after Elimination of Unrealized Intersegment Gain (Loss)</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfOperatingSegmentsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfOperatingSegmentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of operating segments [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOperatingSegmentsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfOperatingSegmentsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TradeAndOtherReceivablesTable_019b46bd-0684-7f0a-a35a-ef5bc5d9019b_terseLabel_en-US" xlink:label="lab_ck0000932782_TradeAndOtherReceivablesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trade and Other Receivables [table]</link:label>
    <link:label id="lab_ck0000932782_TradeAndOtherReceivablesTable_label_en-US" xlink:label="lab_ck0000932782_TradeAndOtherReceivablesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trade and Other Receivables [table]</link:label>
    <link:label id="lab_ck0000932782_TradeAndOtherReceivablesTable_documentation_en-US" xlink:label="lab_ck0000932782_TradeAndOtherReceivablesTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Trade and Other Receivables [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TradeAndOtherReceivablesTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TradeAndOtherReceivablesTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TradeAndOtherReceivablesTable" xlink:to="lab_ck0000932782_TradeAndOtherReceivablesTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NitrogenSupplyContractValue_019b46bd-05e4-79f3-8ce0-90c187ccb262_terseLabel_en-US" xlink:label="lab_ck0000932782_NitrogenSupplyContractValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Nitrogen to be supplied</link:label>
    <link:label id="lab_ck0000932782_NitrogenSupplyContractValue_label_en-US" xlink:label="lab_ck0000932782_NitrogenSupplyContractValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nitrogen supply contract value</link:label>
    <link:label id="lab_ck0000932782_NitrogenSupplyContractValue_documentation_en-US" xlink:label="lab_ck0000932782_NitrogenSupplyContractValue" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Nitrogen supply contract value.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NitrogenSupplyContractValue" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NitrogenSupplyContractValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NitrogenSupplyContractValue" xlink:to="lab_ck0000932782_NitrogenSupplyContractValue" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit_019b46bd-0684-76ab-a60b-2291dd1d5a52_terseLabel_en-US" xlink:label="lab_ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit_label_en-US" xlink:label="lab_ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Recoverable amount of asset or cash-generating unit</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit" xlink:to="lab_ifrs-full_RecoverableAmountOfAssetOrCashgeneratingUnit" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_GreaterThanOrEqualTo91OctaneGasolineMember_019b46bd-0684-7a6f-86c0-2129deed224d_terseLabel_en-US" xlink:label="lab_ck0000932782_GreaterThanOrEqualTo91OctaneGasolineMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Greater Than 91 Octane Gasoline</link:label>
    <link:label id="lab_ck0000932782_GreaterThanOrEqualTo91OctaneGasolineMember_label_en-US" xlink:label="lab_ck0000932782_GreaterThanOrEqualTo91OctaneGasolineMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Greater Than or Equal To 91 Octane Gasoline [Member]</link:label>
    <link:label id="lab_ck0000932782_GreaterThanOrEqualTo91OctaneGasolineMember_documentation_en-US" xlink:label="lab_ck0000932782_GreaterThanOrEqualTo91OctaneGasolineMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Greater Than or Equal To 91 Octane Gasoline</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GreaterThanOrEqualTo91OctaneGasolineMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GreaterThanOrEqualTo91OctaneGasolineMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_GreaterThanOrEqualTo91OctaneGasolineMember" xlink:to="lab_ck0000932782_GreaterThanOrEqualTo91OctaneGasolineMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ContingentLiabilityForGuaranteesMember_019b46bd-045f-7ef7-adae-b322c99e9c6b_terseLabel_en-US" xlink:label="lab_ifrs-full_ContingentLiabilityForGuaranteesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contingent liability for guarantees</link:label>
    <link:label id="lab_ifrs-full_ContingentLiabilityForGuaranteesMember_label_en-US" xlink:label="lab_ifrs-full_ContingentLiabilityForGuaranteesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contingent liability for guarantees [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContingentLiabilityForGuaranteesMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContingentLiabilityForGuaranteesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ContingentLiabilityForGuaranteesMember" xlink:to="lab_ifrs-full_ContingentLiabilityForGuaranteesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsTable_019b46bd-053c-7fc7-b8c6-7aa96154fad5_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about intangible assets [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about intangible assets [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfIntangibleAssetsTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfIntangibleAssetsTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfIntangibleAssetsTable" xlink:to="lab_ifrs-full_DisclosureOfIntangibleAssetsTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ImpairedLoansMember_019b46bd-05e4-72bd-b36a-babb067f1417_terseLabel_en-US" xlink:label="lab_ck0000932782_ImpairedLoansMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Impaired (reserved)</link:label>
    <link:label id="lab_ck0000932782_ImpairedLoansMember_label_en-US" xlink:label="lab_ck0000932782_ImpairedLoansMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impaired loans [member]</link:label>
    <link:label id="lab_ck0000932782_ImpairedLoansMember_documentation_en-US" xlink:label="lab_ck0000932782_ImpairedLoansMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Impaired loans.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ImpairedLoansMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ImpairedLoansMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ImpairedLoansMember" xlink:to="lab_ck0000932782_ImpairedLoansMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_Borrowings_019b46bd-0715-78d0-9bf0-8583d688e256_negatedLabel_en-US" xlink:label="lab_ifrs-full_Borrowings" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Debt</link:label>
    <link:label id="lab_ifrs-full_Borrowings_019b46bd-0715-7d68-81d3-68e6b9866f99_terseLabel_en-US" xlink:label="lab_ifrs-full_Borrowings" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Borrowings</link:label>
    <link:label id="lab_ifrs-full_Borrowings_019b46bd-0715-7ae0-823a-27292e907491_verboseLabel_en-US" xlink:label="lab_ifrs-full_Borrowings" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Debt</link:label>
    <link:label id="lab_ifrs-full_Borrowings_label_en-US" xlink:label="lab_ifrs-full_Borrowings" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Borrowings</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Borrowings" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Borrowings"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Borrowings" xlink:to="lab_ifrs-full_Borrowings" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NonFinancialAssetsAbstract_019b46bd-05e4-7277-bce9-82a97c5c4843_terseLabel_en-US" xlink:label="lab_ck0000932782_NonFinancialAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other non-financing receivables:</link:label>
    <link:label id="lab_ck0000932782_NonFinancialAssetsAbstract_label_en-US" xlink:label="lab_ck0000932782_NonFinancialAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non Financial Assets [Abstract]</link:label>
    <link:label id="lab_ck0000932782_NonFinancialAssetsAbstract_documentation_en-US" xlink:label="lab_ck0000932782_NonFinancialAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Non-financial assets [Abstract].</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NonFinancialAssetsAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NonFinancialAssetsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NonFinancialAssetsAbstract" xlink:to="lab_ck0000932782_NonFinancialAssetsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment_019b46bd-05e4-75c9-a357-a06b804b14fe_negatedLabel_en-US" xlink:label="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">(Impairment)</link:label>
    <link:label id="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment_label_en-US" xlink:label="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impairment loss recognised in profit or loss, property, plant and equipment</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:to="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities_019b46bd-053c-7449-9ab7-75c33eab75bc_totalLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash flows from (used in) financing activities</link:label>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities_label_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash flows from (used in) financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:to="lab_ifrs-full_CashFlowsFromUsedInFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_RefiningMember_019b46bd-0715-7288-bb51-f688fd1216f4_terseLabel_en-US" xlink:label="lab_ck0000932782_RefiningMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Refining</link:label>
    <link:label id="lab_ck0000932782_RefiningMember_label_en-US" xlink:label="lab_ck0000932782_RefiningMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Refining [member]</link:label>
    <link:label id="lab_ck0000932782_RefiningMember_documentation_en-US" xlink:label="lab_ck0000932782_RefiningMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Refining.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RefiningMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RefiningMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_RefiningMember" xlink:to="lab_ck0000932782_RefiningMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CounterpartiesAxis_019b46bd-05e5-75d9-ac0f-0f8c97dd4773_terseLabel_en-US" xlink:label="lab_ifrs-full_CounterpartiesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Counterparties [axis]</link:label>
    <link:label id="lab_ifrs-full_CounterpartiesAxis_label_en-US" xlink:label="lab_ifrs-full_CounterpartiesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Counterparties [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CounterpartiesAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CounterpartiesAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CounterpartiesAxis" xlink:to="lab_ifrs-full_CounterpartiesAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IncreaseDecreaseInBasisPoints_019b46bd-05e4-727e-b2b2-f7493fc71684_terseLabel_en-US" xlink:label="lab_ck0000932782_IncreaseDecreaseInBasisPoints" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assumption of either an increase or decrease of basis points in floating interest rates of debt and corresponding hedges</link:label>
    <link:label id="lab_ck0000932782_IncreaseDecreaseInBasisPoints_label_en-US" xlink:label="lab_ck0000932782_IncreaseDecreaseInBasisPoints" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (decrease) in basis points</link:label>
    <link:label id="lab_ck0000932782_IncreaseDecreaseInBasisPoints_documentation_en-US" xlink:label="lab_ck0000932782_IncreaseDecreaseInBasisPoints" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Increase (decrease) in basis points.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncreaseDecreaseInBasisPoints" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncreaseDecreaseInBasisPoints"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IncreaseDecreaseInBasisPoints" xlink:to="lab_ck0000932782_IncreaseDecreaseInBasisPoints" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts_019b46bd-045f-777e-89dd-b8aaae1f2812_negatedLabel_en-US" xlink:label="lab_srt_SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Sales of oil and gas produced, net of production costs</link:label>
    <link:label id="lab_srt_SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts_label_en-US" xlink:label="lab_srt_SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Sale and Transfer of Oil and Gas Produced</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts" xlink:to="lab_srt_SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_RatedCreditExposureDebt_019b46bd-0684-7de5-bfb0-a01e72babd65_verboseLabel_en-US" xlink:label="lab_ck0000932782_RatedCreditExposureDebt" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Maximum Credit Exposure by term in Petroleos Mexicanos including debt</link:label>
    <link:label id="lab_ck0000932782_RatedCreditExposureDebt_label_en-US" xlink:label="lab_ck0000932782_RatedCreditExposureDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Rated Credit Exposure Debt</link:label>
    <link:label id="lab_ck0000932782_RatedCreditExposureDebt_documentation_en-US" xlink:label="lab_ck0000932782_RatedCreditExposureDebt" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Rated credit expsoure debt.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RatedCreditExposureDebt" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RatedCreditExposureDebt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_RatedCreditExposureDebt" xlink:to="lab_ck0000932782_RatedCreditExposureDebt" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ReceiveSwissFrancsPayUsDollarsMember_019b46bd-0684-7fd2-9311-b4b06efd528e_terseLabel_en-US" xlink:label="lab_ck0000932782_ReceiveSwissFrancsPayUsDollarsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Receive Swiss francs/Pay U.S. dollars</link:label>
    <link:label id="lab_ck0000932782_ReceiveSwissFrancsPayUsDollarsMember_label_en-US" xlink:label="lab_ck0000932782_ReceiveSwissFrancsPayUsDollarsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Receive swiss francs pay us dollars [member]</link:label>
    <link:label id="lab_ck0000932782_ReceiveSwissFrancsPayUsDollarsMember_documentation_en-US" xlink:label="lab_ck0000932782_ReceiveSwissFrancsPayUsDollarsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Receive swiss francs pay us dollars [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ReceiveSwissFrancsPayUsDollarsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ReceiveSwissFrancsPayUsDollarsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ReceiveSwissFrancsPayUsDollarsMember" xlink:to="lab_ck0000932782_ReceiveSwissFrancsPayUsDollarsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PercentOfServiceIncomeOnDomesticSales_019b46bd-0684-784a-b7bb-b93df571c092_terseLabel_en-US" xlink:label="lab_ck0000932782_PercentOfServiceIncomeOnDomesticSales" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of service income from domestic sales</link:label>
    <link:label id="lab_ck0000932782_PercentOfServiceIncomeOnDomesticSales_label_en-US" xlink:label="lab_ck0000932782_PercentOfServiceIncomeOnDomesticSales" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percent Of Service Income On Domestic Sales</link:label>
    <link:label id="lab_ck0000932782_PercentOfServiceIncomeOnDomesticSales_documentation_en-US" xlink:label="lab_ck0000932782_PercentOfServiceIncomeOnDomesticSales" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percent of service income on domestic sales.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PercentOfServiceIncomeOnDomesticSales" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PercentOfServiceIncomeOnDomesticSales"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PercentOfServiceIncomeOnDomesticSales" xlink:to="lab_ck0000932782_PercentOfServiceIncomeOnDomesticSales" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PlanAssetsAtFairValue_019b46bd-0715-72c3-842e-f2a527bc7cd6_verboseLabel_en-US" xlink:label="lab_ifrs-full_PlanAssetsAtFairValue" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Plan assets at fair value</link:label>
    <link:label id="lab_ifrs-full_PlanAssetsAtFairValue_019b46bd-0715-7d9d-af22-eb414ecb823a_periodStartLabel_en-US" xlink:label="lab_ifrs-full_PlanAssetsAtFairValue" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Plan assets at the beginning of year</link:label>
    <link:label id="lab_ifrs-full_PlanAssetsAtFairValue_019b46bd-0715-7e7a-bdde-4065b83f03c8_periodEndLabel_en-US" xlink:label="lab_ifrs-full_PlanAssetsAtFairValue" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Pension plan assets at the end of year</link:label>
    <link:label id="lab_ifrs-full_PlanAssetsAtFairValue_019b46bd-0715-761d-86b3-c054aba8315c_totalLabel_en-US" xlink:label="lab_ifrs-full_PlanAssetsAtFairValue" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ifrs-full_PlanAssetsAtFairValue_label_en-US" xlink:label="lab_ifrs-full_PlanAssetsAtFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan assets, at fair value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PlanAssetsAtFairValue" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PlanAssetsAtFairValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PlanAssetsAtFairValue" xlink:to="lab_ifrs-full_PlanAssetsAtFairValue" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DerivativeFinancialInstrumentsIncomeCostNet_019b46bd-045f-7244-86cf-db238bbc5d84_terseLabel_en-US" xlink:label="lab_ck0000932782_DerivativeFinancialInstrumentsIncomeCostNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative financial instruments income (cost), net</link:label>
    <link:label id="lab_ck0000932782_DerivativeFinancialInstrumentsIncomeCostNet_019bd698-57a8-727c-9c8f-191abfa6bc70_verboseLabel_en-US" xlink:label="lab_ck0000932782_DerivativeFinancialInstrumentsIncomeCostNet" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Derivative financial instruments income (cost) , net</link:label>
    <link:label id="lab_ck0000932782_DerivativeFinancialInstrumentsIncomeCostNet_label_en-US" xlink:label="lab_ck0000932782_DerivativeFinancialInstrumentsIncomeCostNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative financial instruments income (cost), net</link:label>
    <link:label id="lab_ck0000932782_DerivativeFinancialInstrumentsIncomeCostNet_documentation_en-US" xlink:label="lab_ck0000932782_DerivativeFinancialInstrumentsIncomeCostNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivative financial instruments income (cost), net.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DerivativeFinancialInstrumentsIncomeCostNet" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DerivativeFinancialInstrumentsIncomeCostNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DerivativeFinancialInstrumentsIncomeCostNet" xlink:to="lab_ck0000932782_DerivativeFinancialInstrumentsIncomeCostNet" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NetIncomeLossForPeriod_019b46bd-045f-7846-9da0-0d53b701aac0_terseLabel_en-US" xlink:label="lab_ck0000932782_NetIncomeLossForPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net (loss) for the year</link:label>
    <link:label id="lab_ck0000932782_NetIncomeLossForPeriod_label_en-US" xlink:label="lab_ck0000932782_NetIncomeLossForPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income Loss for Period</link:label>
    <link:label id="lab_ck0000932782_NetIncomeLossForPeriod_documentation_en-US" xlink:label="lab_ck0000932782_NetIncomeLossForPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net income loss for period.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NetIncomeLossForPeriod" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NetIncomeLossForPeriod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NetIncomeLossForPeriod" xlink:to="lab_ck0000932782_NetIncomeLossForPeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IncomeTaxAuthority1Axis_019b46bd-0684-7291-a357-234dc6853b8c_terseLabel_en-US" xlink:label="lab_ck0000932782_IncomeTaxAuthority1Axis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income tax authority 1 [axis]</link:label>
    <link:label id="lab_ck0000932782_IncomeTaxAuthority1Axis_label_en-US" xlink:label="lab_ck0000932782_IncomeTaxAuthority1Axis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income tax authority 1 [axis]</link:label>
    <link:label id="lab_ck0000932782_IncomeTaxAuthority1Axis_documentation_en-US" xlink:label="lab_ck0000932782_IncomeTaxAuthority1Axis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Income tax authority 1 [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncomeTaxAuthority1Axis" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncomeTaxAuthority1Axis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IncomeTaxAuthority1Axis" xlink:to="lab_ck0000932782_IncomeTaxAuthority1Axis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_StatementOfChangesInEquityTable_019b46bd-05e4-739e-aa59-69499c5a353b_terseLabel_en-US" xlink:label="lab_ifrs-full_StatementOfChangesInEquityTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement of changes in equity [table]</link:label>
    <link:label id="lab_ifrs-full_StatementOfChangesInEquityTable_label_en-US" xlink:label="lab_ifrs-full_StatementOfChangesInEquityTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of changes in equity [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfChangesInEquityTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_StatementOfChangesInEquityTable" xlink:to="lab_ifrs-full_StatementOfChangesInEquityTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NumberOfStates_019b46bd-0684-72ca-a9c7-fb0e9bed2fd8_terseLabel_en-US" xlink:label="lab_ck0000932782_NumberOfStates" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of states</link:label>
    <link:label id="lab_ck0000932782_NumberOfStates_label_en-US" xlink:label="lab_ck0000932782_NumberOfStates" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of states</link:label>
    <link:label id="lab_ck0000932782_NumberOfStates_documentation_en-US" xlink:label="lab_ck0000932782_NumberOfStates" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of states</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NumberOfStates" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NumberOfStates"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NumberOfStates" xlink:to="lab_ck0000932782_NumberOfStates" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ActuarialAssumptionsAxis_019b46bd-053d-74e6-a060-13ce3a9510d9_terseLabel_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Actuarial assumptions [axis]</link:label>
    <link:label id="lab_ifrs-full_ActuarialAssumptionsAxis_label_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Actuarial assumptions [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ActuarialAssumptionsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ActuarialAssumptionsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ActuarialAssumptionsAxis" xlink:to="lab_ifrs-full_ActuarialAssumptionsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_A3rd.GroupMember_019d60c7-2027-763c-a829-4e0e0355c8c9_terseLabel_en-US" xlink:label="lab_ck0000932782_A3rd.GroupMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">3rd. Group</link:label>
    <link:label id="lab_ck0000932782_A3rd.GroupMember_label_en-US" xlink:label="lab_ck0000932782_A3rd.GroupMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">3rd. Group [Member]</link:label>
    <link:label id="lab_ck0000932782_A3rd.GroupMember_documentation_en-US" xlink:label="lab_ck0000932782_A3rd.GroupMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">3rd. Group</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_A3rd.GroupMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_A3rd.GroupMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_A3rd.GroupMember" xlink:to="lab_ck0000932782_A3rd.GroupMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfAssetsDomain_019b46bd-0684-7a45-b361-43977afbb911_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfAssetsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of assets</link:label>
    <link:label id="lab_ifrs-full_ClassesOfAssetsDomain_label_en-US" xlink:label="lab_ifrs-full_ClassesOfAssetsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of assets [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfAssetsDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfAssetsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfAssetsDomain" xlink:to="lab_ifrs-full_ClassesOfAssetsDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InterestIncomeOnDebtInstrumentsHeld_019b46bd-0684-7d8b-b13f-34dc7b3f85ec_terseLabel_en-US" xlink:label="lab_ifrs-full_InterestIncomeOnDebtInstrumentsHeld" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest income</link:label>
    <link:label id="lab_ifrs-full_InterestIncomeOnDebtInstrumentsHeld_label_en-US" xlink:label="lab_ifrs-full_InterestIncomeOnDebtInstrumentsHeld" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest income on debt instruments held</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestIncomeOnDebtInstrumentsHeld" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestIncomeOnDebtInstrumentsHeld"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InterestIncomeOnDebtInstrumentsHeld" xlink:to="lab_ifrs-full_InterestIncomeOnDebtInstrumentsHeld" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEPlus350BasisPointsMember_019b46bd-053d-7ad2-893a-bf68231be18f_terseLabel_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEPlus350BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE Plus 350 Basis Points</link:label>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEPlus350BasisPointsMember_label_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEPlus350BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE Plus 350 Basis Points [Member]</link:label>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEPlus350BasisPointsMember_documentation_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEPlus350BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE Plus 350 Basis Points</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TwentyEightDaysTIIEPlus350BasisPointsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TwentyEightDaysTIIEPlus350BasisPointsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TwentyEightDaysTIIEPlus350BasisPointsMember" xlink:to="lab_ck0000932782_TwentyEightDaysTIIEPlus350BasisPointsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfSupplementalStatementOfCashFlowExplanatory_019b46bd-05e4-7cc2-9dbe-82a336667b21_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementalStatementOfCashFlowExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Supplemental Statement of Cash Flows</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfSupplementalStatementOfCashFlowExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementalStatementOfCashFlowExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of supplemental statement of cash flow [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfSupplementalStatementOfCashFlowExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementalStatementOfCashFlowExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The disclosure of supplemental statement of cash flow.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfSupplementalStatementOfCashFlowExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfSupplementalStatementOfCashFlowExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfSupplementalStatementOfCashFlowExplanatory" xlink:to="lab_ck0000932782_DisclosureOfSupplementalStatementOfCashFlowExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TwentyEightyDaysTIIEPlus350BasisPointsMember_019b46bd-0684-7734-8511-1af0be25ba94_terseLabel_en-US" xlink:label="lab_ck0000932782_TwentyEightyDaysTIIEPlus350BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Twenty Eighty Days TIIE Plus 350 Basis Points</link:label>
    <link:label id="lab_ck0000932782_TwentyEightyDaysTIIEPlus350BasisPointsMember_label_en-US" xlink:label="lab_ck0000932782_TwentyEightyDaysTIIEPlus350BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Twenty Eighty Days TIIE Plus 350 Basis Points [Member]</link:label>
    <link:label id="lab_ck0000932782_TwentyEightyDaysTIIEPlus350BasisPointsMember_documentation_en-US" xlink:label="lab_ck0000932782_TwentyEightyDaysTIIEPlus350BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Twenty Eighty Days TIIE Plus 350 Basis Points</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TwentyEightyDaysTIIEPlus350BasisPointsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TwentyEightyDaysTIIEPlus350BasisPointsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TwentyEightyDaysTIIEPlus350BasisPointsMember" xlink:to="lab_ck0000932782_TwentyEightyDaysTIIEPlus350BasisPointsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SevenToTenYearMember_019b46bd-0715-7244-bb9c-dc0b0c7e025f_terseLabel_en-US" xlink:label="lab_ck0000932782_SevenToTenYearMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">7-10 years</link:label>
    <link:label id="lab_ck0000932782_SevenToTenYearMember_label_en-US" xlink:label="lab_ck0000932782_SevenToTenYearMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Seven to Ten Year [member]</link:label>
    <link:label id="lab_ck0000932782_SevenToTenYearMember_documentation_en-US" xlink:label="lab_ck0000932782_SevenToTenYearMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Seven to ten year.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SevenToTenYearMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SevenToTenYearMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SevenToTenYearMember" xlink:to="lab_ck0000932782_SevenToTenYearMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NumberOfDerivativeFinancialInstrumentsInForeignCurrency_019b46bd-053d-7e99-9d34-fd044899f9ac_terseLabel_en-US" xlink:label="lab_ck0000932782_NumberOfDerivativeFinancialInstrumentsInForeignCurrency" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of derivative financial instruments in foreign currency</link:label>
    <link:label id="lab_ck0000932782_NumberOfDerivativeFinancialInstrumentsInForeignCurrency_label_en-US" xlink:label="lab_ck0000932782_NumberOfDerivativeFinancialInstrumentsInForeignCurrency" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Derivative Financial Instruments In Foreign Currency</link:label>
    <link:label id="lab_ck0000932782_NumberOfDerivativeFinancialInstrumentsInForeignCurrency_documentation_en-US" xlink:label="lab_ck0000932782_NumberOfDerivativeFinancialInstrumentsInForeignCurrency" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number Of Derivative Financial Instruments In Foreign Currency</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NumberOfDerivativeFinancialInstrumentsInForeignCurrency" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NumberOfDerivativeFinancialInstrumentsInForeignCurrency"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NumberOfDerivativeFinancialInstrumentsInForeignCurrency" xlink:to="lab_ck0000932782_NumberOfDerivativeFinancialInstrumentsInForeignCurrency" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_BottomOfRangeMember_019b46bd-0684-7aa1-951a-d07c4ba6aab2_terseLabel_en-US" xlink:label="lab_ifrs-full_BottomOfRangeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bottom of range</link:label>
    <link:label id="lab_ifrs-full_BottomOfRangeMember_label_en-US" xlink:label="lab_ifrs-full_BottomOfRangeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Bottom of range [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BottomOfRangeMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BottomOfRangeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_BottomOfRangeMember" xlink:to="lab_ifrs-full_BottomOfRangeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TwentyFiveBasisPointsLowerMember_019b46bd-045f-7787-bd3b-f389e6a275ae_terseLabel_en-US" xlink:label="lab_ck0000932782_TwentyFiveBasisPointsLowerMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Twenty five basis points lower</link:label>
    <link:label id="lab_ck0000932782_TwentyFiveBasisPointsLowerMember_label_en-US" xlink:label="lab_ck0000932782_TwentyFiveBasisPointsLowerMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Twenty five basis points lower [member]</link:label>
    <link:label id="lab_ck0000932782_TwentyFiveBasisPointsLowerMember_documentation_en-US" xlink:label="lab_ck0000932782_TwentyFiveBasisPointsLowerMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Twenty five basis points lower.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TwentyFiveBasisPointsLowerMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TwentyFiveBasisPointsLowerMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TwentyFiveBasisPointsLowerMember" xlink:to="lab_ck0000932782_TwentyFiveBasisPointsLowerMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CategoriesOfRelatedPartiesAxis_019b46bd-0684-7930-ae36-34fe7fa06607_terseLabel_en-US" xlink:label="lab_ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Categories of related parties [axis]</link:label>
    <link:label id="lab_ifrs-full_CategoriesOfRelatedPartiesAxis_label_en-US" xlink:label="lab_ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Categories of related parties [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:to="lab_ifrs-full_CategoriesOfRelatedPartiesAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory_019b46bd-05e4-7fba-98f7-b88c6fbebc02_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Impairment of non-financial assets</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Description of accounting policy for impairment of non-financial assets [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory" xlink:to="lab_ifrs-full_DescriptionOfAccountingPolicyForImpairmentOfNonfinancialAssetsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InterestReceivedOtherClassifiedAsInvestingActivities_019b46bd-0684-7e2a-b604-f1500d0050ac_verboseLabel_en-US" xlink:label="lab_ck0000932782_InterestReceivedOtherClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Interest collected</link:label>
    <link:label id="lab_ck0000932782_InterestReceivedOtherClassifiedAsInvestingActivities_label_en-US" xlink:label="lab_ck0000932782_InterestReceivedOtherClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Received Other Classified As Investing Activities</link:label>
    <link:label id="lab_ck0000932782_InterestReceivedOtherClassifiedAsInvestingActivities_documentation_en-US" xlink:label="lab_ck0000932782_InterestReceivedOtherClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interest received other classified as investing activities.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterestReceivedOtherClassifiedAsInvestingActivities" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterestReceivedOtherClassifiedAsInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterestReceivedOtherClassifiedAsInvestingActivities" xlink:to="lab_ck0000932782_InterestReceivedOtherClassifiedAsInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProfitLoss_019b46bd-05e4-7b4c-877e-7499f52ea19e_totalLabel_en-US" xlink:label="lab_ifrs-full_ProfitLoss" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net (loss) income</link:label>
    <link:label id="lab_ifrs-full_ProfitLoss_019b46bd-05e4-73be-add1-d2dc49a1d810_terseLabel_en-US" xlink:label="lab_ifrs-full_ProfitLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net (loss) income</link:label>
    <link:label id="lab_ifrs-full_ProfitLoss_019b46bd-05e4-7884-81cf-d1030f68a3dd_netLabel_en-US" xlink:label="lab_ifrs-full_ProfitLoss" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Net (loss) income</link:label>
    <link:label id="lab_ifrs-full_ProfitLoss_019b46bd-05e4-7a59-96e9-cde8a3ea7767_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_ProfitLoss" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Net (loss) income</link:label>
    <link:label id="lab_ifrs-full_ProfitLoss_label_en-US" xlink:label="lab_ifrs-full_ProfitLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit (loss)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLoss" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProfitLoss" xlink:to="lab_ifrs-full_ProfitLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BlockEightMember_019b46bd-05e4-77f6-b8fe-5cf88ae269d9_terseLabel_en-US" xlink:label="lab_ck0000932782_BlockEightMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Block 8</link:label>
    <link:label id="lab_ck0000932782_BlockEightMember_label_en-US" xlink:label="lab_ck0000932782_BlockEightMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Block eight [member]</link:label>
    <link:label id="lab_ck0000932782_BlockEightMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockEightMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block eight [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockEightMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockEightMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BlockEightMember" xlink:to="lab_ck0000932782_BlockEightMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_Fines_019b46bd-053d-71a2-991f-f6634ab3da30_negatedLabel_en-US" xlink:label="lab_ck0000932782_Fines" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Fines</link:label>
    <link:label id="lab_ck0000932782_Fines_label_en-US" xlink:label="lab_ck0000932782_Fines" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fines</link:label>
    <link:label id="lab_ck0000932782_Fines_documentation_en-US" xlink:label="lab_ck0000932782_Fines" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fines.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_Fines" xlink:href="ck0000932782-20251231.xsd#ck0000932782_Fines"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_Fines" xlink:to="lab_ck0000932782_Fines" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentLiabilities_019b46bd-053c-7ad8-866c-3631738c0bb7_totalLabel_en-US" xlink:label="lab_ifrs-full_NoncurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total long-term liabilities</link:label>
    <link:label id="lab_ifrs-full_NoncurrentLiabilities_019b46bd-053c-76e7-82e5-57352545b57e_verboseLabel_en-US" xlink:label="lab_ifrs-full_NoncurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total long-term liabilities</link:label>
    <link:label id="lab_ifrs-full_NoncurrentLiabilities_label_en-US" xlink:label="lab_ifrs-full_NoncurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-current liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentLiabilities" xlink:to="lab_ifrs-full_NoncurrentLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_Bonds1Member_019b46bd-0715-72fc-bae0-71e744f6a7d9_terseLabel_en-US" xlink:label="lab_ck0000932782_Bonds1Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bonds</link:label>
    <link:label id="lab_ck0000932782_Bonds1Member_label_en-US" xlink:label="lab_ck0000932782_Bonds1Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Bonds 1 [Member]</link:label>
    <link:label id="lab_ck0000932782_Bonds1Member_documentation_en-US" xlink:label="lab_ck0000932782_Bonds1Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Bonds.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_Bonds1Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_Bonds1Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_Bonds1Member" xlink:to="lab_ck0000932782_Bonds1Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClosingForeignExchangeRate_019b46bd-0684-7668-a005-a984eabc7126_terseLabel_en-US" xlink:label="lab_ifrs-full_ClosingForeignExchangeRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Currency exchange rate</link:label>
    <link:label id="lab_ifrs-full_ClosingForeignExchangeRate_019b46bd-0684-7bb0-ba57-f91c055f2e52_verboseLabel_en-US" xlink:label="lab_ifrs-full_ClosingForeignExchangeRate" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Exchange rate</link:label>
    <link:label id="lab_ifrs-full_ClosingForeignExchangeRate_label_en-US" xlink:label="lab_ifrs-full_ClosingForeignExchangeRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Closing foreign exchange rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClosingForeignExchangeRate" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClosingForeignExchangeRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClosingForeignExchangeRate" xlink:to="lab_ifrs-full_ClosingForeignExchangeRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TwentyFiveBasisPointsHigherMember_019b46bd-0715-719b-8fef-38a66f16be54_terseLabel_en-US" xlink:label="lab_ck0000932782_TwentyFiveBasisPointsHigherMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Twenty five basis points higher</link:label>
    <link:label id="lab_ck0000932782_TwentyFiveBasisPointsHigherMember_label_en-US" xlink:label="lab_ck0000932782_TwentyFiveBasisPointsHigherMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Twenty five basis points higher [member]</link:label>
    <link:label id="lab_ck0000932782_TwentyFiveBasisPointsHigherMember_documentation_en-US" xlink:label="lab_ck0000932782_TwentyFiveBasisPointsHigherMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Twenty five basis points higher.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TwentyFiveBasisPointsHigherMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TwentyFiveBasisPointsHigherMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TwentyFiveBasisPointsHigherMember" xlink:to="lab_ck0000932782_TwentyFiveBasisPointsHigherMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_DocumentRegistrationStatement_019b46bd-053c-7880-aa31-4e450f0d7639_terseLabel_en-US" xlink:label="lab_dei_DocumentRegistrationStatement" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Registration Statement</link:label>
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    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionTwoSeptember2025Member_documentation_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionTwoSeptember2025Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Two, September 2025</link:label>
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    <link:label id="lab_ck0000932782_PriceOfTheMexicanCrudeOilExportMixPerBarrel_label_en-US" xlink:label="lab_ck0000932782_PriceOfTheMexicanCrudeOilExportMixPerBarrel" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Price of the Mexican crude oil export mix per barrel</link:label>
    <link:label id="lab_ck0000932782_PriceOfTheMexicanCrudeOilExportMixPerBarrel_documentation_en-US" xlink:label="lab_ck0000932782_PriceOfTheMexicanCrudeOilExportMixPerBarrel" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Price of the Mexican crude oil export mix per barrel.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PriceOfTheMexicanCrudeOilExportMixPerBarrel" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PriceOfTheMexicanCrudeOilExportMixPerBarrel"/>
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    <link:label id="lab_ck0000932782_SummaryOfIncomeTaxesAndDutiesPayableTableTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_SummaryOfIncomeTaxesAndDutiesPayableTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Summary of Income Taxes and Duties Payable</link:label>
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    <link:label id="lab_ck0000932782_DelayExpenses_documentation_en-US" xlink:label="lab_ck0000932782_DelayExpenses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Delay Expenses</link:label>
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    <link:label id="lab_ck0000932782_NetFinanceCostNetDefinedBenefitLiabilityAsset_documentation_en-US" xlink:label="lab_ck0000932782_NetFinanceCostNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net finance cost net defined benefit liability asset.</link:label>
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    <link:label id="lab_ck0000932782_ThirtyDaysSOFRPlus415BasisPointsMember_documentation_en-US" xlink:label="lab_ck0000932782_ThirtyDaysSOFRPlus415BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Thirty Days SOFR Plus 415 Basis Points</link:label>
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    <link:label id="lab_ck0000932782_DomesticCustomersMember_019b46bd-053c-7de6-9a0e-dfefc9e55397_verboseLabel_en-US" xlink:label="lab_ck0000932782_DomesticCustomersMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Domestic customers</link:label>
    <link:label id="lab_ck0000932782_DomesticCustomersMember_label_en-US" xlink:label="lab_ck0000932782_DomesticCustomersMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Domestic customers [member]</link:label>
    <link:label id="lab_ck0000932782_DomesticCustomersMember_documentation_en-US" xlink:label="lab_ck0000932782_DomesticCustomersMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Domestic customers.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DomesticCustomersMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DomesticCustomersMember"/>
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    <link:label id="lab_currency_GBP_019b46bd-053c-71f5-9822-95cda4ea8468_terseLabel_en-US" xlink:label="lab_currency_GBP" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pounds sterling</link:label>
    <link:label id="lab_currency_GBP_label_en-US" xlink:label="lab_currency_GBP" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">United Kingdom, Pounds</link:label>
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    <link:label id="lab_ck0000932782_BlockTwoOfTampicoMisantlaMember_019b46bd-05e4-7aa8-ab7b-d8fb9f74bbd7_terseLabel_en-US" xlink:label="lab_ck0000932782_BlockTwoOfTampicoMisantlaMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Block 2 Tampico Misantla</link:label>
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    <link:label id="lab_ck0000932782_BlockTwoOfTampicoMisantlaMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockTwoOfTampicoMisantlaMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block Two Of Tampico Misantla</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockTwoOfTampicoMisantlaMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockTwoOfTampicoMisantlaMember"/>
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    <link:label id="lab_ifrs-full_LiabilitiesAbstract_019b46bd-0684-7f32-8c3b-09e35d1fb5d1_terseLabel_en-US" xlink:label="lab_ifrs-full_LiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liabilities</link:label>
    <link:label id="lab_ifrs-full_LiabilitiesAbstract_label_en-US" xlink:label="lab_ifrs-full_LiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities [abstract]</link:label>
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    <link:label id="lab_ck0000932782_SundryDebtors_label_en-US" xlink:label="lab_ck0000932782_SundryDebtors" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sundry Debtors</link:label>
    <link:label id="lab_ck0000932782_SundryDebtors_documentation_en-US" xlink:label="lab_ck0000932782_SundryDebtors" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Sundry debtors.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SundryDebtors" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SundryDebtors"/>
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    <link:label id="lab_ck0000932782_FivePointSixTwoFivePercentBondsDueTwoThousandFortySixMember_documentation_en-US" xlink:label="lab_ck0000932782_FivePointSixTwoFivePercentBondsDueTwoThousandFortySixMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Five point six two five percent bonds due two thousand forty six.</link:label>
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    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionTwoOctober2025Member_documentation_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionTwoOctober2025Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Two, October 2025</link:label>
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    <link:label id="lab_ck0000932782_PaymentTerms_documentation_en-US" xlink:label="lab_ck0000932782_PaymentTerms" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Payment Terms</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PaymentTerms" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PaymentTerms"/>
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    <link:label id="lab_ck0000932782_DebtPrincipalAmountAndInterestBeginningBalance_label_en-US" xlink:label="lab_ck0000932782_DebtPrincipalAmountAndInterestBeginningBalance" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Principal Amount And Interest Beginning Balance</link:label>
    <link:label id="lab_ck0000932782_DebtPrincipalAmountAndInterestBeginningBalance_documentation_en-US" xlink:label="lab_ck0000932782_DebtPrincipalAmountAndInterestBeginningBalance" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt principal amount and interest beginning balance.</link:label>
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    <link:label id="lab_ifrs-full_CarryingAmountMember_019b46bd-0715-7eba-abcd-211434a657bf_terseLabel_en-US" xlink:label="lab_ifrs-full_CarryingAmountMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Notional Amount</link:label>
    <link:label id="lab_ifrs-full_CarryingAmountMember_label_en-US" xlink:label="lab_ifrs-full_CarryingAmountMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Carrying amount [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CarryingAmountMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CarryingAmountMember" xlink:to="lab_ifrs-full_CarryingAmountMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionMember_019b46bd-0684-71f7-8235-700c6a094e12_terseLabel_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionMember_label_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position [Member]</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionMember_documentation_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StrengtheningOfFinancialPositionMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StrengtheningOfFinancialPositionMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_StrengtheningOfFinancialPositionMember" xlink:to="lab_ck0000932782_StrengtheningOfFinancialPositionMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_StorageTerminalsMember_019b46bd-0684-7a56-90d9-221a6f8f75df_terseLabel_en-US" xlink:label="lab_ck0000932782_StorageTerminalsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Storage terminals</link:label>
    <link:label id="lab_ck0000932782_StorageTerminalsMember_label_en-US" xlink:label="lab_ck0000932782_StorageTerminalsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Storage Terminals [Member]</link:label>
    <link:label id="lab_ck0000932782_StorageTerminalsMember_documentation_en-US" xlink:label="lab_ck0000932782_StorageTerminalsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Storage Terminals</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StorageTerminalsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StorageTerminalsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_StorageTerminalsMember" xlink:to="lab_ck0000932782_StorageTerminalsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ScheduleOfTradeAndOtherReceivablesExplanatoryTableTextBlock_019b46bd-05e5-7676-aa39-1a477bcb6539_terseLabel_en-US" xlink:label="lab_ck0000932782_ScheduleOfTradeAndOtherReceivablesExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Accounts Receivable and Other Receivables</link:label>
    <link:label id="lab_ck0000932782_ScheduleOfTradeAndOtherReceivablesExplanatoryTableTextBlock_label_en-US" xlink:label="lab_ck0000932782_ScheduleOfTradeAndOtherReceivablesExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Trade and Other Receivables Explanatory [Table Text Block]</link:label>
    <link:label id="lab_ck0000932782_ScheduleOfTradeAndOtherReceivablesExplanatoryTableTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_ScheduleOfTradeAndOtherReceivablesExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of trade and other receivables.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ScheduleOfTradeAndOtherReceivablesExplanatoryTableTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ScheduleOfTradeAndOtherReceivablesExplanatoryTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ScheduleOfTradeAndOtherReceivablesExplanatoryTableTextBlock" xlink:to="lab_ck0000932782_ScheduleOfTradeAndOtherReceivablesExplanatoryTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DebtPrincipalAmount_019b46bd-0684-7e48-a499-e3f8208d4d2b_terseLabel_en-US" xlink:label="lab_ck0000932782_DebtPrincipalAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Principal amount of debt</link:label>
    <link:label id="lab_ck0000932782_DebtPrincipalAmount_label_en-US" xlink:label="lab_ck0000932782_DebtPrincipalAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Principal Amount</link:label>
    <link:label id="lab_ck0000932782_DebtPrincipalAmount_documentation_en-US" xlink:label="lab_ck0000932782_DebtPrincipalAmount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt principal amount.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DebtPrincipalAmount" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DebtPrincipalAmount"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DebtPrincipalAmount" xlink:to="lab_ck0000932782_DebtPrincipalAmount" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CangrejeraPetrochemicalComplexMember_019b46bd-0684-7c03-bffe-a6815b0801b7_terseLabel_en-US" xlink:label="lab_ck0000932782_CangrejeraPetrochemicalComplexMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cangrejera Petrochemical Complex</link:label>
    <link:label id="lab_ck0000932782_CangrejeraPetrochemicalComplexMember_label_en-US" xlink:label="lab_ck0000932782_CangrejeraPetrochemicalComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cangrejera Petrochemical Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_CangrejeraPetrochemicalComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_CangrejeraPetrochemicalComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cangrejera petrochemical complex.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CangrejeraPetrochemicalComplexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CangrejeraPetrochemicalComplexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CangrejeraPetrochemicalComplexMember" xlink:to="lab_ck0000932782_CangrejeraPetrochemicalComplexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MinatitlanRefineryMember_019b46bd-05e4-7557-93df-71552c09b079_terseLabel_en-US" xlink:label="lab_ck0000932782_MinatitlanRefineryMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Minatitl&#225;n Refinery</link:label>
    <link:label id="lab_ck0000932782_MinatitlanRefineryMember_label_en-US" xlink:label="lab_ck0000932782_MinatitlanRefineryMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Minatitlan Refinery [Member]</link:label>
    <link:label id="lab_ck0000932782_MinatitlanRefineryMember_documentation_en-US" xlink:label="lab_ck0000932782_MinatitlanRefineryMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Minatitln Refinery.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MinatitlanRefineryMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MinatitlanRefineryMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MinatitlanRefineryMember" xlink:to="lab_ck0000932782_MinatitlanRefineryMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BankIndebtedness_019b46bd-0715-7806-8ce6-a57a9ed70600_terseLabel_en-US" xlink:label="lab_ck0000932782_BankIndebtedness" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bank indebtedness</link:label>
    <link:label id="lab_ck0000932782_BankIndebtedness_label_en-US" xlink:label="lab_ck0000932782_BankIndebtedness" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Bank indebtedness</link:label>
    <link:label id="lab_ck0000932782_BankIndebtedness_documentation_en-US" xlink:label="lab_ck0000932782_BankIndebtedness" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Bank indebtedness.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BankIndebtedness" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BankIndebtedness"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BankIndebtedness" xlink:to="lab_ck0000932782_BankIndebtedness" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits_019b46bd-0715-7612-88f1-7235c3a4898f_terseLabel_en-US" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Retirement</link:label>
    <link:label id="lab_ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits_label_en-US" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Key management personnel compensation, short-term employee benefits</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits" xlink:to="lab_ifrs-full_KeyManagementPersonnelCompensationShorttermEmployeeBenefits" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PemexMember_019b46bd-053c-7b21-96f9-1a47659df80b_terseLabel_en-US" xlink:label="lab_ck0000932782_PemexMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">PEMEX</link:label>
    <link:label id="lab_ck0000932782_PemexMember_label_en-US" xlink:label="lab_ck0000932782_PemexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">PEMEX [Member]</link:label>
    <link:label id="lab_ck0000932782_PemexMember_documentation_en-US" xlink:label="lab_ck0000932782_PemexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">PEMEX.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PemexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PemexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PemexMember" xlink:to="lab_ck0000932782_PemexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_RefinedAndPetrochemicalsProductsMember_019b46bd-0715-74de-827e-965ef8cc58be_terseLabel_en-US" xlink:label="lab_ck0000932782_RefinedAndPetrochemicalsProductsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Refined and petrochemicals products</link:label>
    <link:label id="lab_ck0000932782_RefinedAndPetrochemicalsProductsMember_label_en-US" xlink:label="lab_ck0000932782_RefinedAndPetrochemicalsProductsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Refined And Petrochemicals Products [member]</link:label>
    <link:label id="lab_ck0000932782_RefinedAndPetrochemicalsProductsMember_documentation_en-US" xlink:label="lab_ck0000932782_RefinedAndPetrochemicalsProductsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Refined and petrochemicals products .</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RefinedAndPetrochemicalsProductsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RefinedAndPetrochemicalsProductsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_RefinedAndPetrochemicalsProductsMember" xlink:to="lab_ck0000932782_RefinedAndPetrochemicalsProductsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CiudadPemexGasProcessingComplexMember_019b46bd-05e4-75ef-ab83-ac6251d0820b_terseLabel_en-US" xlink:label="lab_ck0000932782_CiudadPemexGasProcessingComplexMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ciudad Pemex Gas Processor Complex</link:label>
    <link:label id="lab_ck0000932782_CiudadPemexGasProcessingComplexMember_label_en-US" xlink:label="lab_ck0000932782_CiudadPemexGasProcessingComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ciudad Pemex Gas Processing Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_CiudadPemexGasProcessingComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_CiudadPemexGasProcessingComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ciudad Pemex Gas Processing Complex.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CiudadPemexGasProcessingComplexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CiudadPemexGasProcessingComplexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CiudadPemexGasProcessingComplexMember" xlink:to="lab_ck0000932782_CiudadPemexGasProcessingComplexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PmiTradingLtdMember_019b46bd-053d-79f0-bad4-4aa66b118008_terseLabel_en-US" xlink:label="lab_ck0000932782_PmiTradingLtdMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">PMI Trading Ltd</link:label>
    <link:label id="lab_ck0000932782_PmiTradingLtdMember_label_en-US" xlink:label="lab_ck0000932782_PmiTradingLtdMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">PMI Trading Ltd [member]</link:label>
    <link:label id="lab_ck0000932782_PmiTradingLtdMember_documentation_en-US" xlink:label="lab_ck0000932782_PmiTradingLtdMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">PMI Trading Ltd.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PmiTradingLtdMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PmiTradingLtdMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PmiTradingLtdMember" xlink:to="lab_ck0000932782_PmiTradingLtdMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember_019b46bd-0684-7829-b3d5-1a42780ba390_terseLabel_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rate of increase in salaries</link:label>
    <link:label id="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember_label_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Actuarial assumption of expected rates of salary increases [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember" xlink:to="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfSalaryIncreasesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DiscountRateYield_019b46bd-0684-773d-aef0-4438b629a7fd_terseLabel_en-US" xlink:label="lab_ck0000932782_DiscountRateYield" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Discount rate yield</link:label>
    <link:label id="lab_ck0000932782_DiscountRateYield_label_en-US" xlink:label="lab_ck0000932782_DiscountRateYield" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Discount Rate Yield</link:label>
    <link:label id="lab_ck0000932782_DiscountRateYield_documentation_en-US" xlink:label="lab_ck0000932782_DiscountRateYield" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Discount rate yield.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DiscountRateYield" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DiscountRateYield"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DiscountRateYield" xlink:to="lab_ck0000932782_DiscountRateYield" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ExplorationExpensesForOilAndGas_019b46bd-05e4-76b7-9f34-b713199750f5_terseLabel_en-US" xlink:label="lab_ck0000932782_ExplorationExpensesForOilAndGas" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exploration expenses</link:label>
    <link:label id="lab_ck0000932782_ExplorationExpensesForOilAndGas_label_en-US" xlink:label="lab_ck0000932782_ExplorationExpensesForOilAndGas" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exploration Expenses For Oil and Gas</link:label>
    <link:label id="lab_ck0000932782_ExplorationExpensesForOilAndGas_documentation_en-US" xlink:label="lab_ck0000932782_ExplorationExpensesForOilAndGas" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Exploration expenses for oil and gas.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ExplorationExpensesForOilAndGas" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ExplorationExpensesForOilAndGas"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ExplorationExpensesForOilAndGas" xlink:to="lab_ck0000932782_ExplorationExpensesForOilAndGas" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InterCompanyIncreaseDecreaseFinancing_019b46bd-0684-7c13-b3f9-972121c9a41a_terseLabel_en-US" xlink:label="lab_ck0000932782_InterCompanyIncreaseDecreaseFinancing" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inter-company (decrease) increase financing</link:label>
    <link:label id="lab_ck0000932782_InterCompanyIncreaseDecreaseFinancing_label_en-US" xlink:label="lab_ck0000932782_InterCompanyIncreaseDecreaseFinancing" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inter Company Increase Decrease Financing</link:label>
    <link:label id="lab_ck0000932782_InterCompanyIncreaseDecreaseFinancing_documentation_en-US" xlink:label="lab_ck0000932782_InterCompanyIncreaseDecreaseFinancing" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Inter company increase decrease financing.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterCompanyIncreaseDecreaseFinancing" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterCompanyIncreaseDecreaseFinancing"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterCompanyIncreaseDecreaseFinancing" xlink:to="lab_ck0000932782_InterCompanyIncreaseDecreaseFinancing" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IndustrialTransformationSegmentMember_019b46bd-0684-7bf9-a522-59fe6eb0a061_terseLabel_en-US" xlink:label="lab_ck0000932782_IndustrialTransformationSegmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Industrial Transformation</link:label>
    <link:label id="lab_ck0000932782_IndustrialTransformationSegmentMember_label_en-US" xlink:label="lab_ck0000932782_IndustrialTransformationSegmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Industrial Transformation Segment [member]</link:label>
    <link:label id="lab_ck0000932782_IndustrialTransformationSegmentMember_documentation_en-US" xlink:label="lab_ck0000932782_IndustrialTransformationSegmentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Industrial transformation segment.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IndustrialTransformationSegmentMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IndustrialTransformationSegmentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IndustrialTransformationSegmentMember" xlink:to="lab_ck0000932782_IndustrialTransformationSegmentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodDecrease_019b46bd-045f-729e-b627-01efa249ac03_terseLabel_en-US" xlink:label="lab_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodDecrease" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Developed and undeveloped dry gas reserves increase decrease</link:label>
    <link:label id="lab_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodDecrease_label_en-US" xlink:label="lab_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodDecrease" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Developed And Undeveloped Dry Gas Reserves Net Period Decrease</link:label>
    <link:label id="lab_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodDecrease_documentation_en-US" xlink:label="lab_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodDecrease" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Developed and undeveloped dry gas reserves net period decrease.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodDecrease" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodDecrease"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodDecrease" xlink:to="lab_ck0000932782_DevelopedAndUndevelopedDryGasReservesNetPeriodDecrease" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IntangibleAssetsOtherThanGoodwillMember_019b46bd-053c-7c68-b6ef-8fa45041f88f_terseLabel_en-US" xlink:label="lab_ifrs-full_IntangibleAssetsOtherThanGoodwillMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible assets other than goodwill</link:label>
    <link:label id="lab_ifrs-full_IntangibleAssetsOtherThanGoodwillMember_label_en-US" xlink:label="lab_ifrs-full_IntangibleAssetsOtherThanGoodwillMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intangible assets other than goodwill [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IntangibleAssetsOtherThanGoodwillMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IntangibleAssetsOtherThanGoodwillMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IntangibleAssetsOtherThanGoodwillMember" xlink:to="lab_ifrs-full_IntangibleAssetsOtherThanGoodwillMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfIncomeTaxesAbstract_019b46bd-0715-7f62-a4f9-26b443f95037_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfIncomeTaxesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of income taxes [abstract]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfIncomeTaxesAbstract_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfIncomeTaxesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of income taxes [abstract]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfIncomeTaxesAbstract_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfIncomeTaxesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of income taxes.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfIncomeTaxesAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfIncomeTaxesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfIncomeTaxesAbstract" xlink:to="lab_ck0000932782_DisclosureOfIncomeTaxesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseNoncumulativeProfit_019b46bd-0684-7b6b-8986-0d4104200374_terseLabel_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseNoncumulativeProfit" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-cumulative profit</link:label>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseNoncumulativeProfit_label_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseNoncumulativeProfit" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit-sharing duty expense non-cumulative profit</link:label>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseNoncumulativeProfit_documentation_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseNoncumulativeProfit" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Profit-sharing duty expense non-cumulative profit.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProfitsharingDutyExpenseNoncumulativeProfit" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProfitsharingDutyExpenseNoncumulativeProfit"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProfitsharingDutyExpenseNoncumulativeProfit" xlink:to="lab_ck0000932782_ProfitsharingDutyExpenseNoncumulativeProfit" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfFairValueOfPlanAssetsTable_019b46bd-0684-7bf4-9945-481bf05ae9ff_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfFairValueOfPlanAssetsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of fair value of plan assets [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfFairValueOfPlanAssetsTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfFairValueOfPlanAssetsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of fair value of plan assets [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFairValueOfPlanAssetsTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFairValueOfPlanAssetsTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfFairValueOfPlanAssetsTable" xlink:to="lab_ifrs-full_DisclosureOfFairValueOfPlanAssetsTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PurchaseOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities_019b46bd-053c-769e-87e1-0c989e8ecddb_negatedLabel_en-US" xlink:label="lab_ck0000932782_PurchaseOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Acquisition of wells, pipelines, properties, plant and equipment and intangible assets</link:label>
    <link:label id="lab_ck0000932782_PurchaseOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities_label_en-US" xlink:label="lab_ck0000932782_PurchaseOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Purchase of property, plant and equipment and intangible assets, classified as investing activities</link:label>
    <link:label id="lab_ck0000932782_PurchaseOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities_documentation_en-US" xlink:label="lab_ck0000932782_PurchaseOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Purchase of property, plant and equipment and intangible assets, classified as investing activities.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PurchaseOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PurchaseOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PurchaseOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities" xlink:to="lab_ck0000932782_PurchaseOfPropertyPlantAndEquipmentAndIntangibleAssetsClassifiedAsInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_GainLossOnDisposalOfAssets_019b46bd-05e4-73a6-ae24-aa5b83189cba_verboseLabel_en-US" xlink:label="lab_ck0000932782_GainLossOnDisposalOfAssets" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Loss from derecognition of disposal of assets</link:label>
    <link:label id="lab_ck0000932782_GainLossOnDisposalOfAssets_label_en-US" xlink:label="lab_ck0000932782_GainLossOnDisposalOfAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain Loss On Disposal Of Assets</link:label>
    <link:label id="lab_ck0000932782_GainLossOnDisposalOfAssets_documentation_en-US" xlink:label="lab_ck0000932782_GainLossOnDisposalOfAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gain Loss On Disposal Of Assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GainLossOnDisposalOfAssets" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GainLossOnDisposalOfAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_GainLossOnDisposalOfAssets" xlink:to="lab_ck0000932782_GainLossOnDisposalOfAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FinancialAssetsAtFairValue_019b46bd-0684-7c1b-92a4-bb9f029d3ae5_terseLabel_en-US" xlink:label="lab_ifrs-full_FinancialAssetsAtFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial assets measured at fair value</link:label>
    <link:label id="lab_ifrs-full_FinancialAssetsAtFairValue_label_en-US" xlink:label="lab_ifrs-full_FinancialAssetsAtFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial assets, at fair value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialAssetsAtFairValue" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssetsAtFairValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FinancialAssetsAtFairValue" xlink:to="lab_ifrs-full_FinancialAssetsAtFairValue" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LoansReceived_019b46bd-0684-7264-89c6-c296a28a0527_terseLabel_en-US" xlink:label="lab_ifrs-full_LoansReceived" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans obtained - financing institutions</link:label>
    <link:label id="lab_ifrs-full_LoansReceived_label_en-US" xlink:label="lab_ifrs-full_LoansReceived" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans received</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LoansReceived" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LoansReceived"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LoansReceived" xlink:to="lab_ifrs-full_LoansReceived" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AdjustmentToTheDefinedContributionPlan_019b46bd-0715-76eb-8561-f38f21aac64d_terseLabel_en-US" xlink:label="lab_ck0000932782_AdjustmentToTheDefinedContributionPlan" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustment to the Defined Contribution Plan</link:label>
    <link:label id="lab_ck0000932782_AdjustmentToTheDefinedContributionPlan_label_en-US" xlink:label="lab_ck0000932782_AdjustmentToTheDefinedContributionPlan" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustment to the Defined Contribution Plan</link:label>
    <link:label id="lab_ck0000932782_AdjustmentToTheDefinedContributionPlan_documentation_en-US" xlink:label="lab_ck0000932782_AdjustmentToTheDefinedContributionPlan" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Adjustment to the defined contribution plan.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AdjustmentToTheDefinedContributionPlan" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AdjustmentToTheDefinedContributionPlan"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AdjustmentToTheDefinedContributionPlan" xlink:to="lab_ck0000932782_AdjustmentToTheDefinedContributionPlan" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OwnershipInterestValueNet_019b46bd-045f-74ac-8f82-d624fe50d87f_terseLabel_en-US" xlink:label="lab_ck0000932782_OwnershipInterestValueNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ownership amount</link:label>
    <link:label id="lab_ck0000932782_OwnershipInterestValueNet_label_en-US" xlink:label="lab_ck0000932782_OwnershipInterestValueNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ownership Interest Value Net</link:label>
    <link:label id="lab_ck0000932782_OwnershipInterestValueNet_documentation_en-US" xlink:label="lab_ck0000932782_OwnershipInterestValueNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ownership Interest Value Net</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OwnershipInterestValueNet" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OwnershipInterestValueNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OwnershipInterestValueNet" xlink:to="lab_ck0000932782_OwnershipInterestValueNet" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset_019b46bd-053c-7a08-92e2-aec450f960cf_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current Service cost</link:label>
    <link:label id="lab_ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset_019b46bd-053c-7857-a959-8831a28dcd23_verboseLabel_en-US" xlink:label="lab_ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Service costs</link:label>
    <link:label id="lab_ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset_label_en-US" xlink:label="lab_ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase in net defined benefit liability (asset) resulting from current service cost</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset" xlink:to="lab_ifrs-full_CurrentServiceCostNetDefinedBenefitLiabilityAsset" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PMITRDMember_019b46bd-0684-72e7-b504-e6cc5f7acad9_terseLabel_en-US" xlink:label="lab_ck0000932782_PMITRDMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">PMI TRD</link:label>
    <link:label id="lab_ck0000932782_PMITRDMember_label_en-US" xlink:label="lab_ck0000932782_PMITRDMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">PMI TRD [member]</link:label>
    <link:label id="lab_ck0000932782_PMITRDMember_documentation_en-US" xlink:label="lab_ck0000932782_PMITRDMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">PMI TRD.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PMITRDMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PMITRDMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PMITRDMember" xlink:to="lab_ck0000932782_PMITRDMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InterestRateSwapsPositionThreeMember_019b46bd-0684-78b4-93c2-54bf5bcc8b96_terseLabel_en-US" xlink:label="lab_ck0000932782_InterestRateSwapsPositionThreeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Petr&#243;leos Mexicanos pays floating in 6-month U.S. dollar SOFR + spread and receives fixed in U.S. dollar</link:label>
    <link:label id="lab_ck0000932782_InterestRateSwapsPositionThreeMember_label_en-US" xlink:label="lab_ck0000932782_InterestRateSwapsPositionThreeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Rate Swaps Position Three [member]</link:label>
    <link:label id="lab_ck0000932782_InterestRateSwapsPositionThreeMember_documentation_en-US" xlink:label="lab_ck0000932782_InterestRateSwapsPositionThreeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interest rate swaps position three.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterestRateSwapsPositionThreeMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterestRateSwapsPositionThreeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterestRateSwapsPositionThreeMember" xlink:to="lab_ck0000932782_InterestRateSwapsPositionThreeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill_019b46bd-05e4-7115-aa9b-e36bccd62116_terseLabel_en-US" xlink:label="lab_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Useful lives</link:label>
    <link:label id="lab_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill_label_en-US" xlink:label="lab_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Useful life measured as period of time, intangible assets other than goodwill</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill" xlink:to="lab_ifrs-full_UsefulLifeMeasuredAsPeriodOfTimeIntangibleAssetsOtherThanGoodwill" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_WellsUnassignedToReserveMember_019b46bd-0684-7177-a2be-89c7c5c2b995_terseLabel_en-US" xlink:label="lab_ck0000932782_WellsUnassignedToReserveMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Wells unassigned to a reserve:</link:label>
    <link:label id="lab_ck0000932782_WellsUnassignedToReserveMember_label_en-US" xlink:label="lab_ck0000932782_WellsUnassignedToReserveMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Wells unassigned to reserve [member]</link:label>
    <link:label id="lab_ck0000932782_WellsUnassignedToReserveMember_documentation_en-US" xlink:label="lab_ck0000932782_WellsUnassignedToReserveMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Wells unassigned to reserve [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_WellsUnassignedToReserveMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_WellsUnassignedToReserveMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_WellsUnassignedToReserveMember" xlink:to="lab_ck0000932782_WellsUnassignedToReserveMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_WelfareOilDuty_019bba52-91f3-7ceb-8115-c790c5045ec2_terseLabel_en-US" xlink:label="lab_ck0000932782_WelfareOilDuty" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Welfare oil duty</link:label>
    <link:label id="lab_ck0000932782_WelfareOilDuty_label_en-US" xlink:label="lab_ck0000932782_WelfareOilDuty" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Welfare Oil Duty</link:label>
    <link:label id="lab_ck0000932782_WelfareOilDuty_documentation_en-US" xlink:label="lab_ck0000932782_WelfareOilDuty" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Welfare Oil Duty</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_WelfareOilDuty" xlink:href="ck0000932782-20251231.xsd#ck0000932782_WelfareOilDuty"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_WelfareOilDuty" xlink:to="lab_ck0000932782_WelfareOilDuty" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss_019b46bd-0684-72dc-837e-9ff8ecf9451d_terseLabel_en-US" xlink:label="lab_ifrs-full_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-deductible expenses</link:label>
    <link:label id="lab_ifrs-full_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss_label_en-US" xlink:label="lab_ifrs-full_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tax effect of expense not deductible in determining taxable profit (tax loss)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss" xlink:to="lab_ifrs-full_TaxEffectOfExpenseNotDeductibleInDeterminingTaxableProfitTaxLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LakachMember_019b46bd-053c-7301-ab51-bba5f29000c2_terseLabel_en-US" xlink:label="lab_ck0000932782_LakachMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lakach</link:label>
    <link:label id="lab_ck0000932782_LakachMember_label_en-US" xlink:label="lab_ck0000932782_LakachMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lakach [Member]</link:label>
    <link:label id="lab_ck0000932782_LakachMember_documentation_en-US" xlink:label="lab_ck0000932782_LakachMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lakach.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LakachMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LakachMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LakachMember" xlink:to="lab_ck0000932782_LakachMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseDeductionsCap_019b46bd-0715-7f49-b7cc-4858e5781020_terseLabel_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseDeductionsCap" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deductions cap</link:label>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseDeductionsCap_label_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseDeductionsCap" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit-sharing duty expense deductions cap</link:label>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseDeductionsCap_documentation_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseDeductionsCap" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Profit-sharing duty expense deductions cap.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProfitsharingDutyExpenseDeductionsCap" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProfitsharingDutyExpenseDeductionsCap"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProfitsharingDutyExpenseDeductionsCap" xlink:to="lab_ck0000932782_ProfitsharingDutyExpenseDeductionsCap" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityAddressesAddressTypeAxis_019b46bd-05e4-7453-8755-279213b47df2_terseLabel_en-US" xlink:label="lab_dei_EntityAddressesAddressTypeAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Addresses, Address Type [Axis]</link:label>
    <link:label id="lab_dei_EntityAddressesAddressTypeAxis_label_en-US" xlink:label="lab_dei_EntityAddressesAddressTypeAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Addresses, Address Type [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressesAddressTypeAxis" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressesAddressTypeAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressesAddressTypeAxis" xlink:to="lab_dei_EntityAddressesAddressTypeAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionTwoAugust2025Member_019bb20e-65b1-7240-9220-39ad698e701d_terseLabel_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionTwoAugust2025Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Two, August 2025</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionTwoAugust2025Member_label_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionTwoAugust2025Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Two, August 2025 [Member]</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionTwoAugust2025Member_documentation_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionTwoAugust2025Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Two, August 2025</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StrengtheningOfFinancialPositionTwoAugust2025Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StrengtheningOfFinancialPositionTwoAugust2025Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_StrengtheningOfFinancialPositionTwoAugust2025Member" xlink:to="lab_ck0000932782_StrengtheningOfFinancialPositionTwoAugust2025Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CumulativeTranslationEffectOnEquityReserve_019b46bd-0684-7fbf-9dfd-a6e52f7c35f8_negatedLabel_en-US" xlink:label="lab_ck0000932782_CumulativeTranslationEffectOnEquityReserve" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Translation effects</link:label>
    <link:label id="lab_ck0000932782_CumulativeTranslationEffectOnEquityReserve_label_en-US" xlink:label="lab_ck0000932782_CumulativeTranslationEffectOnEquityReserve" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cumulative Translation Effect On Equity Reserve</link:label>
    <link:label id="lab_ck0000932782_CumulativeTranslationEffectOnEquityReserve_documentation_en-US" xlink:label="lab_ck0000932782_CumulativeTranslationEffectOnEquityReserve" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cumulative translation effect on equity reserve.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CumulativeTranslationEffectOnEquityReserve" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CumulativeTranslationEffectOnEquityReserve"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CumulativeTranslationEffectOnEquityReserve" xlink:to="lab_ck0000932782_CumulativeTranslationEffectOnEquityReserve" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfEstimatedFutureContractPaymentsExplanatory_019b46bd-053c-719a-8254-dec0ee068c6a_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfEstimatedFutureContractPaymentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Future Payments Under Contract</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfEstimatedFutureContractPaymentsExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfEstimatedFutureContractPaymentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of estimated future contract payments[text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfEstimatedFutureContractPaymentsExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfEstimatedFutureContractPaymentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The disclosure of estimated future contract payments.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfEstimatedFutureContractPaymentsExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfEstimatedFutureContractPaymentsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfEstimatedFutureContractPaymentsExplanatory" xlink:to="lab_ck0000932782_DisclosureOfEstimatedFutureContractPaymentsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipment_019b46bd-045f-7846-ac8e-3a530f15584b_terseLabel_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Wells, pipelines, properties, plant and equipment, net</link:label>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipment_019b46bd-045f-75a9-8c6f-170050c14835_periodStartLabel_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance</link:label>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipment_019b46bd-045f-72ff-98cb-a9d5f346c03f_periodEndLabel_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance</link:label>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipment_019b46bd-045f-7387-8eab-3015cf6db4d5_verboseLabel_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Wells, pipelines, properties, plant and equipment, net</link:label>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipment_label_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, plant and equipment</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipment" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PropertyPlantAndEquipment"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PropertyPlantAndEquipment" xlink:to="lab_ifrs-full_PropertyPlantAndEquipment" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DeferredTaxesOnProvisionForPensionsAndOtherEmployeeBenefits_019b46bd-0715-7626-bd36-d5a728de2787_terseLabel_en-US" xlink:label="lab_ck0000932782_DeferredTaxesOnProvisionForPensionsAndOtherEmployeeBenefits" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employee benefits provision</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxesOnProvisionForPensionsAndOtherEmployeeBenefits_label_en-US" xlink:label="lab_ck0000932782_DeferredTaxesOnProvisionForPensionsAndOtherEmployeeBenefits" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred taxes on Provision for pensions and other employee benefits</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxesOnProvisionForPensionsAndOtherEmployeeBenefits_documentation_en-US" xlink:label="lab_ck0000932782_DeferredTaxesOnProvisionForPensionsAndOtherEmployeeBenefits" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred taxes on Provision for pensions and other employee benefits</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DeferredTaxesOnProvisionForPensionsAndOtherEmployeeBenefits" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DeferredTaxesOnProvisionForPensionsAndOtherEmployeeBenefits"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DeferredTaxesOnProvisionForPensionsAndOtherEmployeeBenefits" xlink:to="lab_ck0000932782_DeferredTaxesOnProvisionForPensionsAndOtherEmployeeBenefits" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfGovernmentContributionsTable_019b46bd-0460-70bf-a050-c0f342bae684_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfGovernmentContributionsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of government contributions [table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfGovernmentContributionsTable_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfGovernmentContributionsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Government Contributions [Table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfGovernmentContributionsTable_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfGovernmentContributionsTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Government Contributions [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfGovernmentContributionsTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfGovernmentContributionsTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfGovernmentContributionsTable" xlink:to="lab_ck0000932782_DisclosureOfGovernmentContributionsTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherCurrentLiabilities_019b46bd-0684-78a1-b9d3-9272b06876b3_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherCurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other current liabilities</link:label>
    <link:label id="lab_ifrs-full_OtherCurrentLiabilities_label_en-US" xlink:label="lab_ifrs-full_OtherCurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other current liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCurrentLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherCurrentLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherCurrentLiabilities" xlink:to="lab_ifrs-full_OtherCurrentLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherNonfinancialAssets_019b46bd-0715-7abe-9d67-9581257d25c2_verboseLabel_en-US" xlink:label="lab_ifrs-full_OtherNonfinancialAssets" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other non-financing receivables</link:label>
    <link:label id="lab_ifrs-full_OtherNonfinancialAssets_019b46bd-0715-7959-b51f-6a48fc070d64_totalLabel_en-US" xlink:label="lab_ifrs-full_OtherNonfinancialAssets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other non-financing receivables</link:label>
    <link:label id="lab_ifrs-full_OtherNonfinancialAssets_label_en-US" xlink:label="lab_ifrs-full_OtherNonfinancialAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other non-financial assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherNonfinancialAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherNonfinancialAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherNonfinancialAssets" xlink:to="lab_ifrs-full_OtherNonfinancialAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_Level1OfFairValueHierarchyMember_019b46bd-053c-7a72-b3d2-bd62be3eef9c_terseLabel_en-US" xlink:label="lab_ifrs-full_Level1OfFairValueHierarchyMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Level 1</link:label>
    <link:label id="lab_ifrs-full_Level1OfFairValueHierarchyMember_019b46bd-053c-7e97-9fc4-a52bac888b2d_verboseLabel_en-US" xlink:label="lab_ifrs-full_Level1OfFairValueHierarchyMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Quoted prices in active markets for identical assets (level 1)</link:label>
    <link:label id="lab_ifrs-full_Level1OfFairValueHierarchyMember_label_en-US" xlink:label="lab_ifrs-full_Level1OfFairValueHierarchyMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Level 1 of fair value hierarchy [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Level1OfFairValueHierarchyMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Level1OfFairValueHierarchyMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Level1OfFairValueHierarchyMember" xlink:to="lab_ifrs-full_Level1OfFairValueHierarchyMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncomeTaxesPaidRefund_019b46bd-0684-7089-90fc-452794865177_terseLabel_en-US" xlink:label="lab_ifrs-full_IncomeTaxesPaidRefund" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payments of income tax</link:label>
    <link:label id="lab_ifrs-full_IncomeTaxesPaidRefund_label_en-US" xlink:label="lab_ifrs-full_IncomeTaxesPaidRefund" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income taxes paid (refund)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxesPaidRefund" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncomeTaxesPaidRefund"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncomeTaxesPaidRefund" xlink:to="lab_ifrs-full_IncomeTaxesPaidRefund" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EbanoMember_019b46bd-05e4-7cc2-9550-41733ee88fed_terseLabel_en-US" xlink:label="lab_ck0000932782_EbanoMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">&#201;bano</link:label>
    <link:label id="lab_ck0000932782_EbanoMember_label_en-US" xlink:label="lab_ck0000932782_EbanoMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ebano [member]</link:label>
    <link:label id="lab_ck0000932782_EbanoMember_documentation_en-US" xlink:label="lab_ck0000932782_EbanoMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ebano.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EbanoMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EbanoMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EbanoMember" xlink:to="lab_ck0000932782_EbanoMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_019b46bd-0684-797e-8cfd-d4840fba097b_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about property, plant and equipment [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about property, plant and equipment [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems" xlink:to="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PaymentsByTheFund_019b46bd-05e4-7d9f-952a-d18b78fc7974_negatedLabel_en-US" xlink:label="lab_ck0000932782_PaymentsByTheFund" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Payments by the fund</link:label>
    <link:label id="lab_ck0000932782_PaymentsByTheFund_label_en-US" xlink:label="lab_ck0000932782_PaymentsByTheFund" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments By The Fund</link:label>
    <link:label id="lab_ck0000932782_PaymentsByTheFund_documentation_en-US" xlink:label="lab_ck0000932782_PaymentsByTheFund" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Payments by the fund.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PaymentsByTheFund" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PaymentsByTheFund"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PaymentsByTheFund" xlink:to="lab_ck0000932782_PaymentsByTheFund" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitLineItems_019b46bd-0715-7be8-ba75-9c7fdb66de5f_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitLineItems" xlink:to="lab_ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_UndrawnBorrowingFacilities_019b46bd-05e4-727b-afd0-56dec3b79958_terseLabel_en-US" xlink:label="lab_ifrs-full_UndrawnBorrowingFacilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Available credit lines</link:label>
    <link:label id="lab_ifrs-full_UndrawnBorrowingFacilities_label_en-US" xlink:label="lab_ifrs-full_UndrawnBorrowingFacilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Undrawn borrowing facilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_UndrawnBorrowingFacilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UndrawnBorrowingFacilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_UndrawnBorrowingFacilities" xlink:to="lab_ifrs-full_UndrawnBorrowingFacilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LongTermGovernmentBond_019b46bd-0715-7fc6-b8bf-28e41535250f_terseLabel_en-US" xlink:label="lab_ck0000932782_LongTermGovernmentBond" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Government Bonds</link:label>
    <link:label id="lab_ck0000932782_LongTermGovernmentBond_label_en-US" xlink:label="lab_ck0000932782_LongTermGovernmentBond" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long term government bond</link:label>
    <link:label id="lab_ck0000932782_LongTermGovernmentBond_documentation_en-US" xlink:label="lab_ck0000932782_LongTermGovernmentBond" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Long term government bond.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LongTermGovernmentBond" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LongTermGovernmentBond"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LongTermGovernmentBond" xlink:to="lab_ck0000932782_LongTermGovernmentBond" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NegativeEffectFromDecreaseInProduction_019b46bd-05e5-7586-9dc8-7736bb2a2c0d_terseLabel_en-US" xlink:label="lab_ck0000932782_NegativeEffectFromDecreaseInProduction" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Negative effect from decrease in production</link:label>
    <link:label id="lab_ck0000932782_NegativeEffectFromDecreaseInProduction_label_en-US" xlink:label="lab_ck0000932782_NegativeEffectFromDecreaseInProduction" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Negative Effect From Decrease In Production</link:label>
    <link:label id="lab_ck0000932782_NegativeEffectFromDecreaseInProduction_documentation_en-US" xlink:label="lab_ck0000932782_NegativeEffectFromDecreaseInProduction" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Negative Effect From Decrease In Production</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NegativeEffectFromDecreaseInProduction" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NegativeEffectFromDecreaseInProduction"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NegativeEffectFromDecreaseInProduction" xlink:to="lab_ck0000932782_NegativeEffectFromDecreaseInProduction" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LiquidityRiskMitigationAmountThroughBilateralCreditLines_019b46bd-0715-7a69-b9fd-acbbe9cbb9b4_terseLabel_en-US" xlink:label="lab_ck0000932782_LiquidityRiskMitigationAmountThroughBilateralCreditLines" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liquidity risk mitigation amount through bilateral credit lines</link:label>
    <link:label id="lab_ck0000932782_LiquidityRiskMitigationAmountThroughBilateralCreditLines_label_en-US" xlink:label="lab_ck0000932782_LiquidityRiskMitigationAmountThroughBilateralCreditLines" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liquidity Risk Mitigation Amount Through Bilateral Credit Lines</link:label>
    <link:label id="lab_ck0000932782_LiquidityRiskMitigationAmountThroughBilateralCreditLines_documentation_en-US" xlink:label="lab_ck0000932782_LiquidityRiskMitigationAmountThroughBilateralCreditLines" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Liquidity risk mitigation amount through bilateral credit lines.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LiquidityRiskMitigationAmountThroughBilateralCreditLines" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LiquidityRiskMitigationAmountThroughBilateralCreditLines"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LiquidityRiskMitigationAmountThroughBilateralCreditLines" xlink:to="lab_ck0000932782_LiquidityRiskMitigationAmountThroughBilateralCreditLines" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_GainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset_019b46bd-0715-71c6-8380-e3814fbb8a08_negatedLabel_en-US" xlink:label="lab_ifrs-full_GainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">For experience during the year</link:label>
    <link:label id="lab_ifrs-full_GainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset_label_en-US" xlink:label="lab_ifrs-full_GainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Decrease (increase) in net defined benefit liability (asset) resulting from gains (losses) arising from settlements</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_GainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset" xlink:to="lab_ifrs-full_GainsLossesArisingFromSettlementsNetDefinedBenefitLiabilityAsset" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForProvisions_019b46bd-053c-7123-981a-f7ca7dd7d4e8_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForProvisions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provisions for sundry creditors</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForProvisions_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForProvisions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments for provisions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForProvisions" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForProvisions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForProvisions" xlink:to="lab_ifrs-full_AdjustmentsForProvisions" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CantarellMember_019b46bd-0684-761f-8245-692b848670f0_terseLabel_en-US" xlink:label="lab_ck0000932782_CantarellMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cantarell</link:label>
    <link:label id="lab_ck0000932782_CantarellMember_label_en-US" xlink:label="lab_ck0000932782_CantarellMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cantarell [Member]</link:label>
    <link:label id="lab_ck0000932782_CantarellMember_documentation_en-US" xlink:label="lab_ck0000932782_CantarellMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cantarell.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CantarellMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CantarellMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CantarellMember" xlink:to="lab_ck0000932782_CantarellMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ImpairmentLossRecognisedInProfitOrLossTradeReceivables1_019b46bd-0715-7f60-b423-b3bc062e7b5a_terseLabel_en-US" xlink:label="lab_ck0000932782_ImpairmentLossRecognisedInProfitOrLossTradeReceivables1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Impairment of accounts receivable</link:label>
    <link:label id="lab_ck0000932782_ImpairmentLossRecognisedInProfitOrLossTradeReceivables1_label_en-US" xlink:label="lab_ck0000932782_ImpairmentLossRecognisedInProfitOrLossTradeReceivables1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impairment Loss Recognised In Profit Or Loss Trade Receivables 1</link:label>
    <link:label id="lab_ck0000932782_ImpairmentLossRecognisedInProfitOrLossTradeReceivables1_documentation_en-US" xlink:label="lab_ck0000932782_ImpairmentLossRecognisedInProfitOrLossTradeReceivables1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Impairment loss recognised in profit or loss trade receivables.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ImpairmentLossRecognisedInProfitOrLossTradeReceivables1" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ImpairmentLossRecognisedInProfitOrLossTradeReceivables1"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ImpairmentLossRecognisedInProfitOrLossTradeReceivables1" xlink:to="lab_ck0000932782_ImpairmentLossRecognisedInProfitOrLossTradeReceivables1" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DirectLoansMember_019b46bd-053c-7c7e-8901-a244fb3d55db_terseLabel_en-US" xlink:label="lab_ck0000932782_DirectLoansMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Direct loans</link:label>
    <link:label id="lab_ck0000932782_DirectLoansMember_label_en-US" xlink:label="lab_ck0000932782_DirectLoansMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Direct loans [member]</link:label>
    <link:label id="lab_ck0000932782_DirectLoansMember_documentation_en-US" xlink:label="lab_ck0000932782_DirectLoansMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Direct loans.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DirectLoansMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DirectLoansMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DirectLoansMember" xlink:to="lab_ck0000932782_DirectLoansMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember_019b46bd-053c-78ae-a2fd-5dd013f258ee_terseLabel_en-US" xlink:label="lab_ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">31 to 60 days</link:label>
    <link:label id="lab_ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember_label_en-US" xlink:label="lab_ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Later than one month and not later than two months [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember" xlink:to="lab_ifrs-full_LaterThanOneMonthAndNotLaterThanTwoMonthsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OperadoradeCamposDWFSAdeCVMember_019b46bd-0684-7364-be4c-b0daf9d2c7e4_terseLabel_en-US" xlink:label="lab_ck0000932782_OperadoradeCamposDWFSAdeCVMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operadora de Campos DWF, S.A. de C.V.</link:label>
    <link:label id="lab_ck0000932782_OperadoradeCamposDWFSAdeCVMember_label_en-US" xlink:label="lab_ck0000932782_OperadoradeCamposDWFSAdeCVMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operadora de Campos DWF, S.A. de C.V. [member]</link:label>
    <link:label id="lab_ck0000932782_OperadoradeCamposDWFSAdeCVMember_documentation_en-US" xlink:label="lab_ck0000932782_OperadoradeCamposDWFSAdeCVMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Operadora de Campos DWF, S.A. de C.V.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OperadoradeCamposDWFSAdeCVMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OperadoradeCamposDWFSAdeCVMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OperadoradeCamposDWFSAdeCVMember" xlink:to="lab_ck0000932782_OperadoradeCamposDWFSAdeCVMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfComponentsOfEquityTextBlock_019b46bd-0684-72dd-bed8-d119e0be549e_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfComponentsOfEquityTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity (Deficit)</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfComponentsOfEquityTextBlock_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfComponentsOfEquityTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Components of Equity [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfComponentsOfEquityTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfComponentsOfEquityTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of components of equity.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfComponentsOfEquityTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfComponentsOfEquityTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfComponentsOfEquityTextBlock" xlink:to="lab_ck0000932782_DisclosureOfComponentsOfEquityTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentLiabilities_019b46bd-0715-7c63-bb78-b95708d8450d_totalLabel_en-US" xlink:label="lab_ifrs-full_CurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total current liabilities</link:label>
    <link:label id="lab_ifrs-full_CurrentLiabilities_019b46bd-0715-723f-867a-55e74bcb08f3_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total current liabilities</link:label>
    <link:label id="lab_ifrs-full_CurrentLiabilities_label_en-US" xlink:label="lab_ifrs-full_CurrentLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentLiabilities" xlink:to="lab_ifrs-full_CurrentLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SalaryAdvancesOutstanding_019b46bd-053c-7cf0-a0dd-239b20de4f87_terseLabel_en-US" xlink:label="lab_ck0000932782_SalaryAdvancesOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Salary advances outstanding</link:label>
    <link:label id="lab_ck0000932782_SalaryAdvancesOutstanding_label_en-US" xlink:label="lab_ck0000932782_SalaryAdvancesOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Salary advances outstanding</link:label>
    <link:label id="lab_ck0000932782_SalaryAdvancesOutstanding_documentation_en-US" xlink:label="lab_ck0000932782_SalaryAdvancesOutstanding" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Salary advances outstanding.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SalaryAdvancesOutstanding" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SalaryAdvancesOutstanding"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SalaryAdvancesOutstanding" xlink:to="lab_ck0000932782_SalaryAdvancesOutstanding" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TradeAndOtherReceivablesAbstract_019b46bd-0684-711f-81a7-79b8ff9a6dc7_terseLabel_en-US" xlink:label="lab_ifrs-full_TradeAndOtherReceivablesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trade and other receivables [abstract]</link:label>
    <link:label id="lab_ifrs-full_TradeAndOtherReceivablesAbstract_label_en-US" xlink:label="lab_ifrs-full_TradeAndOtherReceivablesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trade and other receivables [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherReceivablesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherReceivablesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TradeAndOtherReceivablesAbstract" xlink:to="lab_ifrs-full_TradeAndOtherReceivablesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SpecialTaxOnProductionAndServices_019b46bd-05e4-7f94-aa35-6cb55482bed0_negatedLabel_en-US" xlink:label="lab_ck0000932782_SpecialTaxOnProductionAndServices" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Special Tax on Production and Services</link:label>
    <link:label id="lab_ck0000932782_SpecialTaxOnProductionAndServices_label_en-US" xlink:label="lab_ck0000932782_SpecialTaxOnProductionAndServices" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Special Tax on Production and Services</link:label>
    <link:label id="lab_ck0000932782_SpecialTaxOnProductionAndServices_documentation_en-US" xlink:label="lab_ck0000932782_SpecialTaxOnProductionAndServices" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Special Tax on Production and Services.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SpecialTaxOnProductionAndServices" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SpecialTaxOnProductionAndServices"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SpecialTaxOnProductionAndServices" xlink:to="lab_ck0000932782_SpecialTaxOnProductionAndServices" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FairValueOfAssociatedFinancialLiabilities_019b46bd-05e4-7e56-8e54-953e74734ead_terseLabel_en-US" xlink:label="lab_ifrs-full_FairValueOfAssociatedFinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value of associated financial liabilities</link:label>
    <link:label id="lab_ifrs-full_FairValueOfAssociatedFinancialLiabilities_label_en-US" xlink:label="lab_ifrs-full_FairValueOfAssociatedFinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair value of associated financial liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FairValueOfAssociatedFinancialLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FairValueOfAssociatedFinancialLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FairValueOfAssociatedFinancialLiabilities" xlink:to="lab_ifrs-full_FairValueOfAssociatedFinancialLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis_019b46bd-053c-7028-8125-88dfeec93899_terseLabel_en-US" xlink:label="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Individual assets or cash-generating units [axis]</link:label>
    <link:label id="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis_label_en-US" xlink:label="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Individual assets or cash-generating units [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis" xlink:to="lab_ifrs-full_IndividualAssetsOrCashgeneratingUnitsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ExpensesForEnvironmentalProvision_019b46bd-05e4-7a8c-90e8-bf8f0a3808a2_terseLabel_en-US" xlink:label="lab_ck0000932782_ExpensesForEnvironmentalProvision" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expenses for environmental provision</link:label>
    <link:label id="lab_ck0000932782_ExpensesForEnvironmentalProvision_label_en-US" xlink:label="lab_ck0000932782_ExpensesForEnvironmentalProvision" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expenses For Environmental Provision</link:label>
    <link:label id="lab_ck0000932782_ExpensesForEnvironmentalProvision_documentation_en-US" xlink:label="lab_ck0000932782_ExpensesForEnvironmentalProvision" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Expenses For Environmental Provision</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ExpensesForEnvironmentalProvision" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ExpensesForEnvironmentalProvision"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ExpensesForEnvironmentalProvision" xlink:to="lab_ck0000932782_ExpensesForEnvironmentalProvision" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_GovernmentAgencyMember_019b46bd-0684-7e86-b4e2-778f5427d739_terseLabel_en-US" xlink:label="lab_ck0000932782_GovernmentAgencyMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Government Agency</link:label>
    <link:label id="lab_ck0000932782_GovernmentAgencyMember_label_en-US" xlink:label="lab_ck0000932782_GovernmentAgencyMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Government Agency [Member]</link:label>
    <link:label id="lab_ck0000932782_GovernmentAgencyMember_documentation_en-US" xlink:label="lab_ck0000932782_GovernmentAgencyMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Government Agency</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GovernmentAgencyMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GovernmentAgencyMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_GovernmentAgencyMember" xlink:to="lab_ck0000932782_GovernmentAgencyMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProductsInTransitMember_019b46bd-0460-7e89-8f67-517748ea6317_terseLabel_en-US" xlink:label="lab_ck0000932782_ProductsInTransitMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Products in transit</link:label>
    <link:label id="lab_ck0000932782_ProductsInTransitMember_label_en-US" xlink:label="lab_ck0000932782_ProductsInTransitMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Products In Transit [member]</link:label>
    <link:label id="lab_ck0000932782_ProductsInTransitMember_documentation_en-US" xlink:label="lab_ck0000932782_ProductsInTransitMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Products in transit.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProductsInTransitMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProductsInTransitMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProductsInTransitMember" xlink:to="lab_ck0000932782_ProductsInTransitMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_StatementOfChangesInEquityAbstract_019b46bd-0715-7847-b1c7-2e3948fcf865_terseLabel_en-US" xlink:label="lab_ifrs-full_StatementOfChangesInEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement of changes in equity [abstract]</link:label>
    <link:label id="lab_ifrs-full_StatementOfChangesInEquityAbstract_label_en-US" xlink:label="lab_ifrs-full_StatementOfChangesInEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of changes in equity [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfChangesInEquityAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_StatementOfChangesInEquityAbstract" xlink:to="lab_ifrs-full_StatementOfChangesInEquityAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PromissoryNoteMember_019b46bd-053c-7f15-b8c9-3bbc8c8bd00a_terseLabel_en-US" xlink:label="lab_ck0000932782_PromissoryNoteMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Promissory Note</link:label>
    <link:label id="lab_ck0000932782_PromissoryNoteMember_label_en-US" xlink:label="lab_ck0000932782_PromissoryNoteMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Promissory Note [Member]</link:label>
    <link:label id="lab_ck0000932782_PromissoryNoteMember_documentation_en-US" xlink:label="lab_ck0000932782_PromissoryNoteMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Promissory Note [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PromissoryNoteMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PromissoryNoteMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PromissoryNoteMember" xlink:to="lab_ck0000932782_PromissoryNoteMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RetainedEarnings_019b46bd-0715-79a6-823c-50677b2d97de_terseLabel_en-US" xlink:label="lab_ifrs-full_RetainedEarnings" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">From prior years</link:label>
    <link:label id="lab_ifrs-full_RetainedEarnings_label_en-US" xlink:label="lab_ifrs-full_RetainedEarnings" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retained earnings</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RetainedEarnings" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RetainedEarnings"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RetainedEarnings" xlink:to="lab_ifrs-full_RetainedEarnings" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_MeasurementDomain_019db06c-da5c-7ba3-b13c-21e1a2e35233_terseLabel_en-US" xlink:label="lab_ifrs-full_MeasurementDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Measurement [domain]</link:label>
    <link:label id="lab_ifrs-full_MeasurementDomain_label_en-US" xlink:label="lab_ifrs-full_MeasurementDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MeasurementDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MeasurementDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_MeasurementDomain" xlink:to="lab_ifrs-full_MeasurementDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InsuranceAndDeposits_019b46bd-0684-7eb2-b611-8e3e3f594062_terseLabel_en-US" xlink:label="lab_ck0000932782_InsuranceAndDeposits" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Insurance and deposits</link:label>
    <link:label id="lab_ck0000932782_InsuranceAndDeposits_label_en-US" xlink:label="lab_ck0000932782_InsuranceAndDeposits" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Insurance And Deposits</link:label>
    <link:label id="lab_ck0000932782_InsuranceAndDeposits_documentation_en-US" xlink:label="lab_ck0000932782_InsuranceAndDeposits" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Inssurance and deposits.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InsuranceAndDeposits" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InsuranceAndDeposits"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InsuranceAndDeposits" xlink:to="lab_ck0000932782_InsuranceAndDeposits" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DucMember_019b46bd-0715-72b5-950f-252e14ccf779_terseLabel_en-US" xlink:label="lab_ck0000932782_DucMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">DUC</link:label>
    <link:label id="lab_ck0000932782_DucMember_label_en-US" xlink:label="lab_ck0000932782_DucMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">DUC [member]</link:label>
    <link:label id="lab_ck0000932782_DucMember_documentation_en-US" xlink:label="lab_ck0000932782_DucMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">DUC.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DucMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DucMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DucMember" xlink:to="lab_ck0000932782_DucMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_A5th.GroupMember_019d60c7-7e6d-7d77-8b2b-6088941516b8_terseLabel_en-US" xlink:label="lab_ck0000932782_A5th.GroupMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">5th. Group</link:label>
    <link:label id="lab_ck0000932782_A5th.GroupMember_label_en-US" xlink:label="lab_ck0000932782_A5th.GroupMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">5th. Group [Member]</link:label>
    <link:label id="lab_ck0000932782_A5th.GroupMember_documentation_en-US" xlink:label="lab_ck0000932782_A5th.GroupMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">5th. Group</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_A5th.GroupMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_A5th.GroupMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_A5th.GroupMember" xlink:to="lab_ck0000932782_A5th.GroupMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProceedsFromCapitalizedUnsuccessfulWells_019b46bd-0684-7f3c-a598-c448c753ed44_terseLabel_en-US" xlink:label="lab_ck0000932782_ProceedsFromCapitalizedUnsuccessfulWells" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capitalized unsuccessful wells</link:label>
    <link:label id="lab_ck0000932782_ProceedsFromCapitalizedUnsuccessfulWells_019b46bd-0684-7925-8b5b-7b3fa643184a_verboseLabel_en-US" xlink:label="lab_ck0000932782_ProceedsFromCapitalizedUnsuccessfulWells" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Capitalized unsuccessful wells</link:label>
    <link:label id="lab_ck0000932782_ProceedsFromCapitalizedUnsuccessfulWells_label_en-US" xlink:label="lab_ck0000932782_ProceedsFromCapitalizedUnsuccessfulWells" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds From Capitalized Unsuccessful Wells</link:label>
    <link:label id="lab_ck0000932782_ProceedsFromCapitalizedUnsuccessfulWells_documentation_en-US" xlink:label="lab_ck0000932782_ProceedsFromCapitalizedUnsuccessfulWells" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Proceeds from capitalized unsuccessful wells.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProceedsFromCapitalizedUnsuccessfulWells" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProceedsFromCapitalizedUnsuccessfulWells"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProceedsFromCapitalizedUnsuccessfulWells" xlink:to="lab_ck0000932782_ProceedsFromCapitalizedUnsuccessfulWells" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherIncomeFromServices_019b46bd-0684-7f03-b0f7-b96cca1af48c_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherIncomeFromServices" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other income for services</link:label>
    <link:label id="lab_ck0000932782_OtherIncomeFromServices_label_en-US" xlink:label="lab_ck0000932782_OtherIncomeFromServices" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other income from services</link:label>
    <link:label id="lab_ck0000932782_OtherIncomeFromServices_documentation_en-US" xlink:label="lab_ck0000932782_OtherIncomeFromServices" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other income from services.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherIncomeFromServices" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherIncomeFromServices"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherIncomeFromServices" xlink:to="lab_ck0000932782_OtherIncomeFromServices" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TypesOfRisksDomain_019b46bd-053c-7eb4-b451-c23bf2995bb7_terseLabel_en-US" xlink:label="lab_ifrs-full_TypesOfRisksDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Types of risks</link:label>
    <link:label id="lab_ifrs-full_TypesOfRisksDomain_label_en-US" xlink:label="lab_ifrs-full_TypesOfRisksDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Types of risks [domain]</link:label>
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    <link:label id="lab_ck0000932782_CurrencyOptionsPositionFourMember_label_en-US" xlink:label="lab_ck0000932782_CurrencyOptionsPositionFourMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Currency options position four [member]</link:label>
    <link:label id="lab_ck0000932782_CurrencyOptionsPositionFourMember_documentation_en-US" xlink:label="lab_ck0000932782_CurrencyOptionsPositionFourMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Currency options position four.</link:label>
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    <link:label id="lab_ck0000932782_LossContingenciesByNatureDomain_label_en-US" xlink:label="lab_ck0000932782_LossContingenciesByNatureDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingencies By Nature [Domain]</link:label>
    <link:label id="lab_ck0000932782_LossContingenciesByNatureDomain_documentation_en-US" xlink:label="lab_ck0000932782_LossContingenciesByNatureDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loss Contingencies By Nature [Domain]</link:label>
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    <link:label id="lab_ifrs-full_AccountingEstimatesDomain_label_en-US" xlink:label="lab_ifrs-full_AccountingEstimatesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounting estimates [domain]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AccountingEstimatesDomain" xlink:to="lab_ifrs-full_AccountingEstimatesDomain" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_OneHundredAndEightyTwoDaysTIIEPlus370BasisPointsMember_label_en-US" xlink:label="lab_ck0000932782_OneHundredAndEightyTwoDaysTIIEPlus370BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">One Hundred and Eighty Two Days TIIE Plus 370 Basis Points [Member]</link:label>
    <link:label id="lab_ck0000932782_OneHundredAndEightyTwoDaysTIIEPlus370BasisPointsMember_documentation_en-US" xlink:label="lab_ck0000932782_OneHundredAndEightyTwoDaysTIIEPlus370BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">One Hundred and Eighty Two Days TIIE Plus 370 Basis Points</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OneHundredAndEightyTwoDaysTIIEPlus370BasisPointsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OneHundredAndEightyTwoDaysTIIEPlus370BasisPointsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OneHundredAndEightyTwoDaysTIIEPlus370BasisPointsMember" xlink:to="lab_ck0000932782_OneHundredAndEightyTwoDaysTIIEPlus370BasisPointsMember" xlink:type="arc" order="1"/>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesAxis"/>
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    <link:label id="lab_ck0000932782_TaxesWithheld_label_en-US" xlink:label="lab_ck0000932782_TaxesWithheld" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Taxes Withheld</link:label>
    <link:label id="lab_ck0000932782_TaxesWithheld_documentation_en-US" xlink:label="lab_ck0000932782_TaxesWithheld" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Taxes Withheld</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TaxesWithheld" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TaxesWithheld"/>
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    <link:label id="lab_ck0000932782_DisclosureOfAccountsReceivableBasedOnTheirCreditHistoryTableTextBlock_019b46bd-053c-7fd0-a549-99d20e3e5316_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfAccountsReceivableBasedOnTheirCreditHistoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Breakdown of Accounts Receivable Based on Credit History</link:label>
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    <link:label id="lab_ck0000932782_DisclosureOfAccountsReceivableBasedOnTheirCreditHistoryTableTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfAccountsReceivableBasedOnTheirCreditHistoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The disclosure of disclosure of accounts receivable based on their credit history.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfAccountsReceivableBasedOnTheirCreditHistoryTableTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfAccountsReceivableBasedOnTheirCreditHistoryTableTextBlock"/>
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    <link:label id="lab_ck0000932782_SuppliersPaymentTerms_019daed7-f730-717a-848c-0ea44be6c464_terseLabel_en-US" xlink:label="lab_ck0000932782_SuppliersPaymentTerms" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Suppliers payment terms</link:label>
    <link:label id="lab_ck0000932782_SuppliersPaymentTerms_label_en-US" xlink:label="lab_ck0000932782_SuppliersPaymentTerms" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Suppliers Payment Terms</link:label>
    <link:label id="lab_ck0000932782_SuppliersPaymentTerms_documentation_en-US" xlink:label="lab_ck0000932782_SuppliersPaymentTerms" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Suppliers Payment Terms</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SuppliersPaymentTerms" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SuppliersPaymentTerms"/>
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    <link:label id="lab_ifrs-full_NetDefinedBenefitLiabilityAssetDomain_019b46bd-0715-78eb-b437-6d7bbb540153_terseLabel_en-US" xlink:label="lab_ifrs-full_NetDefinedBenefitLiabilityAssetDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net defined benefit liability (asset)</link:label>
    <link:label id="lab_ifrs-full_NetDefinedBenefitLiabilityAssetDomain_label_en-US" xlink:label="lab_ifrs-full_NetDefinedBenefitLiabilityAssetDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net defined benefit liability (asset) [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NetDefinedBenefitLiabilityAssetDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NetDefinedBenefitLiabilityAssetDomain"/>
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    <link:label id="lab_ifrs-full_RestrictedCashAndCashEquivalents_019b46bd-053c-75cb-b006-f46193258e7e_terseLabel_en-US" xlink:label="lab_ifrs-full_RestrictedCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted Cash</link:label>
    <link:label id="lab_ifrs-full_RestrictedCashAndCashEquivalents_label_en-US" xlink:label="lab_ifrs-full_RestrictedCashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted cash and cash equivalents</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfProvisionsForSundryCreditorsExplanatoryTableTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfProvisionsForSundryCreditorsExplanatoryTableTextBlock"/>
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    <link:label id="lab_ck0000932782_A6th.GroupMember_documentation_en-US" xlink:label="lab_ck0000932782_A6th.GroupMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">6th. Group</link:label>
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    <link:label id="lab_ck0000932782_ReceivePoundsSterlingPayUsDollarsMember_019b46bd-0684-7bba-97e5-80ef04a8931e_terseLabel_en-US" xlink:label="lab_ck0000932782_ReceivePoundsSterlingPayUsDollarsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Receive pounds sterling/Pay U.S. dollars</link:label>
    <link:label id="lab_ck0000932782_ReceivePoundsSterlingPayUsDollarsMember_label_en-US" xlink:label="lab_ck0000932782_ReceivePoundsSterlingPayUsDollarsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Receive pounds sterling pay us dollars [member]</link:label>
    <link:label id="lab_ck0000932782_ReceivePoundsSterlingPayUsDollarsMember_documentation_en-US" xlink:label="lab_ck0000932782_ReceivePoundsSterlingPayUsDollarsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Receive pounds sterling pay us dollars [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ReceivePoundsSterlingPayUsDollarsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ReceivePoundsSterlingPayUsDollarsMember"/>
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    <link:label id="lab_ck0000932782_Tiie28dMxnMember_label_en-US" xlink:label="lab_ck0000932782_Tiie28dMxnMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">TIIE 28D MXN [Member]</link:label>
    <link:label id="lab_ck0000932782_Tiie28dMxnMember_documentation_en-US" xlink:label="lab_ck0000932782_Tiie28dMxnMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">TIIE 28D MXN.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_Tiie28dMxnMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_Tiie28dMxnMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_Tiie28dMxnMember" xlink:to="lab_ck0000932782_Tiie28dMxnMember" xlink:type="arc" order="1"/>
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    <link:label id="lab_ifrs-full_ChangesInNetDefinedBenefitLiabilityAssetAbstract_019b46bd-0715-797b-a85d-8efd404cc4c1_terseLabel_en-US" xlink:label="lab_ifrs-full_ChangesInNetDefinedBenefitLiabilityAssetAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in Defined Benefit Obligations (DBO)</link:label>
    <link:label id="lab_ifrs-full_ChangesInNetDefinedBenefitLiabilityAssetAbstract_label_en-US" xlink:label="lab_ifrs-full_ChangesInNetDefinedBenefitLiabilityAssetAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Changes in net defined benefit liability (asset) [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ChangesInNetDefinedBenefitLiabilityAssetAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ChangesInNetDefinedBenefitLiabilityAssetAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ChangesInNetDefinedBenefitLiabilityAssetAbstract" xlink:to="lab_ifrs-full_ChangesInNetDefinedBenefitLiabilityAssetAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_DocumentFinStmtErrorCorrectionFlag_019b46bd-0715-7bed-b227-c197378ed734_terseLabel_en-US" xlink:label="lab_dei_DocumentFinStmtErrorCorrectionFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Financial Statement Error Correction</link:label>
    <link:label id="lab_dei_DocumentFinStmtErrorCorrectionFlag_label_en-US" xlink:label="lab_dei_DocumentFinStmtErrorCorrectionFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Financial Statement Error Correction [Flag]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFinStmtErrorCorrectionFlag" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFinStmtErrorCorrectionFlag"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFinStmtErrorCorrectionFlag" xlink:to="lab_dei_DocumentFinStmtErrorCorrectionFlag" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProvedReservesAfterNetCashFlowsDiscountFactor_019b46bd-05e4-7393-a972-e6ee4285c96d_terseLabel_en-US" xlink:label="lab_ck0000932782_ProvedReservesAfterNetCashFlowsDiscountFactor" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proved reserves after net cash flows discount factor</link:label>
    <link:label id="lab_ck0000932782_ProvedReservesAfterNetCashFlowsDiscountFactor_label_en-US" xlink:label="lab_ck0000932782_ProvedReservesAfterNetCashFlowsDiscountFactor" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proved Reserves After Net Cash Flows Discount Factor</link:label>
    <link:label id="lab_ck0000932782_ProvedReservesAfterNetCashFlowsDiscountFactor_documentation_en-US" xlink:label="lab_ck0000932782_ProvedReservesAfterNetCashFlowsDiscountFactor" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Proved reserves after net cash flows discount factor.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProvedReservesAfterNetCashFlowsDiscountFactor" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProvedReservesAfterNetCashFlowsDiscountFactor"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProvedReservesAfterNetCashFlowsDiscountFactor" xlink:to="lab_ck0000932782_ProvedReservesAfterNetCashFlowsDiscountFactor" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AccumulatedOtherComprehensiveIncomeMember_019b46bd-0684-7841-8133-634e3d6e31e2_terseLabel_en-US" xlink:label="lab_ifrs-full_AccumulatedOtherComprehensiveIncomeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accumulated other comprehensive result</link:label>
    <link:label id="lab_ifrs-full_AccumulatedOtherComprehensiveIncomeMember_label_en-US" xlink:label="lab_ifrs-full_AccumulatedOtherComprehensiveIncomeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated other comprehensive income [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AccumulatedOtherComprehensiveIncomeMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AccumulatedOtherComprehensiveIncomeMember" xlink:to="lab_ifrs-full_AccumulatedOtherComprehensiveIncomeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AccruedOrPaidKeyManagementPersonnelCompensation_019b46bd-0715-7a78-b67d-fa22736d4bc3_terseLabel_en-US" xlink:label="lab_ck0000932782_AccruedOrPaidKeyManagementPersonnelCompensation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued or paid key management personnel compensation</link:label>
    <link:label id="lab_ck0000932782_AccruedOrPaidKeyManagementPersonnelCompensation_label_en-US" xlink:label="lab_ck0000932782_AccruedOrPaidKeyManagementPersonnelCompensation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued or paid key management personnel compensation</link:label>
    <link:label id="lab_ck0000932782_AccruedOrPaidKeyManagementPersonnelCompensation_documentation_en-US" xlink:label="lab_ck0000932782_AccruedOrPaidKeyManagementPersonnelCompensation" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Accrued or paid key management personnel compensation.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AccruedOrPaidKeyManagementPersonnelCompensation" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AccruedOrPaidKeyManagementPersonnelCompensation"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AccruedOrPaidKeyManagementPersonnelCompensation" xlink:to="lab_ck0000932782_AccruedOrPaidKeyManagementPersonnelCompensation" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NumberOfMunicipalities_019b46bd-05e4-704a-a2af-5f45d3f1d279_terseLabel_en-US" xlink:label="lab_ck0000932782_NumberOfMunicipalities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of municipalities</link:label>
    <link:label id="lab_ck0000932782_NumberOfMunicipalities_label_en-US" xlink:label="lab_ck0000932782_NumberOfMunicipalities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of municipalities</link:label>
    <link:label id="lab_ck0000932782_NumberOfMunicipalities_documentation_en-US" xlink:label="lab_ck0000932782_NumberOfMunicipalities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of municipalities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NumberOfMunicipalities" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NumberOfMunicipalities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NumberOfMunicipalities" xlink:to="lab_ck0000932782_NumberOfMunicipalities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AdjustmentsForProfitSharingDutyAndIncomeTax_019b46bd-0715-772d-b5f8-1306b996f0f8_terseLabel_en-US" xlink:label="lab_ck0000932782_AdjustmentsForProfitSharingDutyAndIncomeTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Profit-sharing duty and Welfare duty paid</link:label>
    <link:label id="lab_ck0000932782_AdjustmentsForProfitSharingDutyAndIncomeTax_label_en-US" xlink:label="lab_ck0000932782_AdjustmentsForProfitSharingDutyAndIncomeTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments for profit sharing duty and income tax</link:label>
    <link:label id="lab_ck0000932782_AdjustmentsForProfitSharingDutyAndIncomeTax_documentation_en-US" xlink:label="lab_ck0000932782_AdjustmentsForProfitSharingDutyAndIncomeTax" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Adjustments for profit sharing duty and income tax.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AdjustmentsForProfitSharingDutyAndIncomeTax" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AdjustmentsForProfitSharingDutyAndIncomeTax"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AdjustmentsForProfitSharingDutyAndIncomeTax" xlink:to="lab_ck0000932782_AdjustmentsForProfitSharingDutyAndIncomeTax" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LinesOfCreditMember_019b46bd-05e5-703a-8230-6fa4a9742b75_terseLabel_en-US" xlink:label="lab_ck0000932782_LinesOfCreditMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lines Of Credit</link:label>
    <link:label id="lab_ck0000932782_LinesOfCreditMember_label_en-US" xlink:label="lab_ck0000932782_LinesOfCreditMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lines Of Credit [Member]</link:label>
    <link:label id="lab_ck0000932782_LinesOfCreditMember_documentation_en-US" xlink:label="lab_ck0000932782_LinesOfCreditMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lines Of Credit.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LinesOfCreditMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LinesOfCreditMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LinesOfCreditMember" xlink:to="lab_ck0000932782_LinesOfCreditMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfMaturityAnalysisForDerivativeFinancialLiabilitiesTable_019b46bd-0684-76d7-9348-8fc1b17742de_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfMaturityAnalysisForDerivativeFinancialLiabilitiesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of maturity analysis for derivative financial liabilities [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfMaturityAnalysisForDerivativeFinancialLiabilitiesTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfMaturityAnalysisForDerivativeFinancialLiabilitiesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of maturity analysis for derivative financial liabilities [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfMaturityAnalysisForDerivativeFinancialLiabilitiesTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfMaturityAnalysisForDerivativeFinancialLiabilitiesTable"/>
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    <link:label id="lab_ck0000932782_MisionBlockMember_019b46bd-045f-76f7-89ad-1c5bfdf68147_terseLabel_en-US" xlink:label="lab_ck0000932782_MisionBlockMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Mision Block</link:label>
    <link:label id="lab_ck0000932782_MisionBlockMember_label_en-US" xlink:label="lab_ck0000932782_MisionBlockMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mision Block [member]</link:label>
    <link:label id="lab_ck0000932782_MisionBlockMember_documentation_en-US" xlink:label="lab_ck0000932782_MisionBlockMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Mision block.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MisionBlockMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MisionBlockMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MisionBlockMember" xlink:to="lab_ck0000932782_MisionBlockMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SixPointThreeFiveZeroPercentBondsDueTwoThousandFortyEightMember_019b46bd-0684-715d-8893-0440f496c620_terseLabel_en-US" xlink:label="lab_ck0000932782_SixPointThreeFiveZeroPercentBondsDueTwoThousandFortyEightMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">6.350% Bonds due 2048</link:label>
    <link:label id="lab_ck0000932782_SixPointThreeFiveZeroPercentBondsDueTwoThousandFortyEightMember_label_en-US" xlink:label="lab_ck0000932782_SixPointThreeFiveZeroPercentBondsDueTwoThousandFortyEightMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Six point three five zero percent Bonds due two thousand forty eight [member]</link:label>
    <link:label id="lab_ck0000932782_SixPointThreeFiveZeroPercentBondsDueTwoThousandFortyEightMember_documentation_en-US" xlink:label="lab_ck0000932782_SixPointThreeFiveZeroPercentBondsDueTwoThousandFortyEightMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Six point three five zero percent Bonds due two thousand forty eight.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SixPointThreeFiveZeroPercentBondsDueTwoThousandFortyEightMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SixPointThreeFiveZeroPercentBondsDueTwoThousandFortyEightMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SixPointThreeFiveZeroPercentBondsDueTwoThousandFortyEightMember" xlink:to="lab_ck0000932782_SixPointThreeFiveZeroPercentBondsDueTwoThousandFortyEightMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2025Member_019b46bd-05e4-78c0-8a5d-e01af83514c1_terseLabel_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2025Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position One, January 2025</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2025Member_label_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2025Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position One, January 2025 [Member]</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2025Member_documentation_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2025Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position One, January 2025</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2025Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StrengtheningOfFinancialPositionOneJanuary2025Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2025Member" xlink:to="lab_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2025Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_EquityAndLiabilities_019b46bd-05e4-75f4-8589-1a96fed03506_totalLabel_en-US" xlink:label="lab_ifrs-full_EquityAndLiabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total liabilities and equity (deficit)</link:label>
    <link:label id="lab_ifrs-full_EquityAndLiabilities_label_en-US" xlink:label="lab_ifrs-full_EquityAndLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity and liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAndLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EquityAndLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_EquityAndLiabilities" xlink:to="lab_ifrs-full_EquityAndLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PajaritosEthyleneProcessorComplexMember_019b46bd-0715-7d10-bfbf-188a6b2d9eb3_terseLabel_en-US" xlink:label="lab_ck0000932782_PajaritosEthyleneProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pajaritos Ethylene Processor Complex</link:label>
    <link:label id="lab_ck0000932782_PajaritosEthyleneProcessorComplexMember_label_en-US" xlink:label="lab_ck0000932782_PajaritosEthyleneProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pajaritos Ethylene Processor Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_PajaritosEthyleneProcessorComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_PajaritosEthyleneProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Pajaritos Ethylene Processor Complex</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PajaritosEthyleneProcessorComplexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PajaritosEthyleneProcessorComplexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PajaritosEthyleneProcessorComplexMember" xlink:to="lab_ck0000932782_PajaritosEthyleneProcessorComplexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_country_US_019b46bd-0715-7784-b5dd-dc159cb4f607_terseLabel_en-US" xlink:label="lab_country_US" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">United States</link:label>
    <link:label id="lab_country_US_label_en-US" xlink:label="lab_country_US" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">UNITED STATES</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_country_US" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_US"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_US" xlink:to="lab_country_US" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_BusinessCombinationsDomain_019b46bd-05e5-7413-bcd3-9752215e436a_terseLabel_en-US" xlink:label="lab_ifrs-full_BusinessCombinationsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business combinations</link:label>
    <link:label id="lab_ifrs-full_BusinessCombinationsDomain_label_en-US" xlink:label="lab_ifrs-full_BusinessCombinationsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business combinations [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_BusinessCombinationsDomain" xlink:to="lab_ifrs-full_BusinessCombinationsDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CostOfSalesAndGeneralExpenses_019b46bd-0460-7383-b844-6690fdb589a3_totalLabel_en-US" xlink:label="lab_ck0000932782_CostOfSalesAndGeneralExpenses" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total cost of sales and general expenses</link:label>
    <link:label id="lab_ck0000932782_CostOfSalesAndGeneralExpenses_label_en-US" xlink:label="lab_ck0000932782_CostOfSalesAndGeneralExpenses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of sales and general expenses</link:label>
    <link:label id="lab_ck0000932782_CostOfSalesAndGeneralExpenses_documentation_en-US" xlink:label="lab_ck0000932782_CostOfSalesAndGeneralExpenses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cost of sales and general expenses.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CostOfSalesAndGeneralExpenses" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CostOfSalesAndGeneralExpenses"/>
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    <link:label id="lab_ck0000932782_LoansAndReceivablesFromForeignBanks_019b46bd-053c-7247-97a4-7fb5bbeb1ace_terseLabel_en-US" xlink:label="lab_ck0000932782_LoansAndReceivablesFromForeignBanks" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loan from foreign banks</link:label>
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    <link:label id="lab_ck0000932782_NumberOfCrossCurrencySwapsSubjectToRestructure_documentation_en-US" xlink:label="lab_ck0000932782_NumberOfCrossCurrencySwapsSubjectToRestructure" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of cross currency swaps subject to restructure.</link:label>
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    <link:label id="lab_ck0000932782_ResolutionDomain_documentation_en-US" xlink:label="lab_ck0000932782_ResolutionDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Resolution [Domain]</link:label>
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    <link:label id="lab_ck0000932782_BBBPlusGradeMember_documentation_en-US" xlink:label="lab_ck0000932782_BBBPlusGradeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">BBB plus.</link:label>
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    <link:label id="lab_ck0000932782_AutomotiveIncentiveAverageRecoveryTerm_label_en-US" xlink:label="lab_ck0000932782_AutomotiveIncentiveAverageRecoveryTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Automotive Incentive, Average Recovery, Term</link:label>
    <link:label id="lab_ck0000932782_AutomotiveIncentiveAverageRecoveryTerm_documentation_en-US" xlink:label="lab_ck0000932782_AutomotiveIncentiveAverageRecoveryTerm" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Automotive Incentive, Average Recovery, Term</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AutomotiveIncentiveAverageRecoveryTerm" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AutomotiveIncentiveAverageRecoveryTerm"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AutomotiveIncentiveAverageRecoveryTerm" xlink:to="lab_ck0000932782_AutomotiveIncentiveAverageRecoveryTerm" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfRelatedPartyExplanatory_019b46bd-0715-7d5f-b82c-45be129bfd32_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfRelatedPartyExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related Parties</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfRelatedPartyExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfRelatedPartyExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of related party [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfRelatedPartyExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfRelatedPartyExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfRelatedPartyExplanatory" xlink:to="lab_ifrs-full_DisclosureOfRelatedPartyExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_GasolineAndAviationGasolineMember_019b46bd-05e4-71ef-838a-4b820d833243_terseLabel_en-US" xlink:label="lab_ck0000932782_GasolineAndAviationGasolineMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gasoline And Aviation Gasoline</link:label>
    <link:label id="lab_ck0000932782_GasolineAndAviationGasolineMember_label_en-US" xlink:label="lab_ck0000932782_GasolineAndAviationGasolineMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gasoline And Aviation Gasoline [Member]</link:label>
    <link:label id="lab_ck0000932782_GasolineAndAviationGasolineMember_documentation_en-US" xlink:label="lab_ck0000932782_GasolineAndAviationGasolineMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gasoline and aviation gasoline.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GasolineAndAviationGasolineMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GasolineAndAviationGasolineMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_GasolineAndAviationGasolineMember" xlink:to="lab_ck0000932782_GasolineAndAviationGasolineMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ReceiveUsdPayPesosMember_019b46bd-0715-72ad-98ff-def6936e9012_terseLabel_en-US" xlink:label="lab_ck0000932782_ReceiveUsdPayPesosMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Receive U.S. dollars and pesos / Pay U.S. dollars and pesos</link:label>
    <link:label id="lab_ck0000932782_ReceiveUsdPayPesosMember_label_en-US" xlink:label="lab_ck0000932782_ReceiveUsdPayPesosMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Receive Usd Pay Pesos [Member]</link:label>
    <link:label id="lab_ck0000932782_ReceiveUsdPayPesosMember_documentation_en-US" xlink:label="lab_ck0000932782_ReceiveUsdPayPesosMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">ReceiveD Usd pay pesos.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ReceiveUsdPayPesosMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ReceiveUsdPayPesosMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ReceiveUsdPayPesosMember" xlink:to="lab_ck0000932782_ReceiveUsdPayPesosMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProvedCrudeOilReserves_019b46bd-053c-7a85-babb-7ff681b57d69_totalLabel_en-US" xlink:label="lab_ck0000932782_ProvedCrudeOilReserves" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total proved reserves</link:label>
    <link:label id="lab_ck0000932782_ProvedCrudeOilReserves_label_en-US" xlink:label="lab_ck0000932782_ProvedCrudeOilReserves" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proved crude oil reserves</link:label>
    <link:label id="lab_ck0000932782_ProvedCrudeOilReserves_documentation_en-US" xlink:label="lab_ck0000932782_ProvedCrudeOilReserves" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Proved crude oil reserves.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProvedCrudeOilReserves" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProvedCrudeOilReserves"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProvedCrudeOilReserves" xlink:to="lab_ck0000932782_ProvedCrudeOilReserves" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_Level3OfFairValueHierarchyMember_019b46bd-05e4-77e6-97a6-82c282cf1d4b_verboseLabel_en-US" xlink:label="lab_ifrs-full_Level3OfFairValueHierarchyMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Significant unobservable inputs (level 3)</link:label>
    <link:label id="lab_ifrs-full_Level3OfFairValueHierarchyMember_label_en-US" xlink:label="lab_ifrs-full_Level3OfFairValueHierarchyMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Level 3 of fair value hierarchy [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Level3OfFairValueHierarchyMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Level3OfFairValueHierarchyMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Level3OfFairValueHierarchyMember" xlink:to="lab_ifrs-full_Level3OfFairValueHierarchyMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ExplorationAndExtraction_019b46bd-0684-76c5-8ceb-3ebd35e2af57_terseLabel_en-US" xlink:label="lab_ck0000932782_ExplorationAndExtraction" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exploration and Extraction Hydrocarbons Duty</link:label>
    <link:label id="lab_ck0000932782_ExplorationAndExtraction_label_en-US" xlink:label="lab_ck0000932782_ExplorationAndExtraction" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exploration and Extraction</link:label>
    <link:label id="lab_ck0000932782_ExplorationAndExtraction_documentation_en-US" xlink:label="lab_ck0000932782_ExplorationAndExtraction" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Exploration and Extraction</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ExplorationAndExtraction" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ExplorationAndExtraction"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ExplorationAndExtraction" xlink:to="lab_ck0000932782_ExplorationAndExtraction" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InterestRateAndCurrencyDfisSensitivityNet_019b46bd-0715-735a-8671-1b8c58a7d2ce_verboseLabel_en-US" xlink:label="lab_ck0000932782_InterestRateAndCurrencyDfisSensitivityNet" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Sensitivity net</link:label>
    <link:label id="lab_ck0000932782_InterestRateAndCurrencyDfisSensitivityNet_019b46bd-0715-7f70-aff2-8e7b44faa04e_terseLabel_en-US" xlink:label="lab_ck0000932782_InterestRateAndCurrencyDfisSensitivityNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sensitivity net</link:label>
    <link:label id="lab_ck0000932782_InterestRateAndCurrencyDfisSensitivityNet_label_en-US" xlink:label="lab_ck0000932782_InterestRateAndCurrencyDfisSensitivityNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest rate and currency DFIS sensitivity net</link:label>
    <link:label id="lab_ck0000932782_InterestRateAndCurrencyDfisSensitivityNet_documentation_en-US" xlink:label="lab_ck0000932782_InterestRateAndCurrencyDfisSensitivityNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interest rate and currency DFIS sensitivity net.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterestRateAndCurrencyDfisSensitivityNet" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterestRateAndCurrencyDfisSensitivityNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterestRateAndCurrencyDfisSensitivityNet" xlink:to="lab_ck0000932782_InterestRateAndCurrencyDfisSensitivityNet" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ExplorationExpenses_019b46bd-05e5-7cbd-aca3-a64a8ee6bafa_terseLabel_en-US" xlink:label="lab_ck0000932782_ExplorationExpenses" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exploration expenses</link:label>
    <link:label id="lab_ck0000932782_ExplorationExpenses_label_en-US" xlink:label="lab_ck0000932782_ExplorationExpenses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exploration Expenses</link:label>
    <link:label id="lab_ck0000932782_ExplorationExpenses_documentation_en-US" xlink:label="lab_ck0000932782_ExplorationExpenses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Exploration expenses .</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ExplorationExpenses" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ExplorationExpenses"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ExplorationExpenses" xlink:to="lab_ck0000932782_ExplorationExpenses" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_VariableRate1Domain_019b46bd-0684-7057-ba27-c98ac1370b6d_terseLabel_en-US" xlink:label="lab_ck0000932782_VariableRate1Domain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Variable Rate [Domain]</link:label>
    <link:label id="lab_ck0000932782_VariableRate1Domain_label_en-US" xlink:label="lab_ck0000932782_VariableRate1Domain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Rate 1 [Domain]</link:label>
    <link:label id="lab_ck0000932782_VariableRate1Domain_documentation_en-US" xlink:label="lab_ck0000932782_VariableRate1Domain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Variable Rate [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_VariableRate1Domain" xlink:href="ck0000932782-20251231.xsd#ck0000932782_VariableRate1Domain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_VariableRate1Domain" xlink:to="lab_ck0000932782_VariableRate1Domain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfSupplementalStatementsOfFinancialPositionExplanatory_019b46bd-0715-7f2d-b228-638c31a64a78_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementalStatementsOfFinancialPositionExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Supplemental Statement of Financial Position</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfSupplementalStatementsOfFinancialPositionExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementalStatementsOfFinancialPositionExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of supplemental statements of financial position explanatory [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfSupplementalStatementsOfFinancialPositionExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementalStatementsOfFinancialPositionExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The disclosure of supplemental statements of financial position.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfSupplementalStatementsOfFinancialPositionExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfSupplementalStatementsOfFinancialPositionExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfSupplementalStatementsOfFinancialPositionExplanatory" xlink:to="lab_ck0000932782_DisclosureOfSupplementalStatementsOfFinancialPositionExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ImpairmentOfFinancialAssetsDomain_019b46bd-053c-738d-bce6-ee0788f0edff_terseLabel_en-US" xlink:label="lab_ifrs-full_ImpairmentOfFinancialAssetsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Impairment of financial assets</link:label>
    <link:label id="lab_ifrs-full_ImpairmentOfFinancialAssetsDomain_label_en-US" xlink:label="lab_ifrs-full_ImpairmentOfFinancialAssetsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impairment of financial assets [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ImpairmentOfFinancialAssetsDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ImpairmentOfFinancialAssetsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ImpairmentOfFinancialAssetsDomain" xlink:to="lab_ifrs-full_ImpairmentOfFinancialAssetsDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InterestsPaid_019b46bd-0684-7244-bccc-f0b24c01bc84_terseLabel_en-US" xlink:label="lab_ck0000932782_InterestsPaid" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest (paid)</link:label>
    <link:label id="lab_ck0000932782_InterestsPaid_label_en-US" xlink:label="lab_ck0000932782_InterestsPaid" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interests Paid</link:label>
    <link:label id="lab_ck0000932782_InterestsPaid_documentation_en-US" xlink:label="lab_ck0000932782_InterestsPaid" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interests paid.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterestsPaid" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterestsPaid"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterestsPaid" xlink:to="lab_ck0000932782_InterestsPaid" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AceiteTerciarioDelGolfoMember_019b46bd-0715-743b-85cc-b204cda8842f_terseLabel_en-US" xlink:label="lab_ck0000932782_AceiteTerciarioDelGolfoMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Aceite Terciario del Golfo</link:label>
    <link:label id="lab_ck0000932782_AceiteTerciarioDelGolfoMember_label_en-US" xlink:label="lab_ck0000932782_AceiteTerciarioDelGolfoMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Aceite Terciario del Golfo [Member]</link:label>
    <link:label id="lab_ck0000932782_AceiteTerciarioDelGolfoMember_documentation_en-US" xlink:label="lab_ck0000932782_AceiteTerciarioDelGolfoMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Aceite Terciario del Golfo.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AceiteTerciarioDelGolfoMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AceiteTerciarioDelGolfoMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AceiteTerciarioDelGolfoMember" xlink:to="lab_ck0000932782_AceiteTerciarioDelGolfoMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_019b46bd-05e4-79fe-ba7f-89fab389c5cf_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of disaggregation of revenue from contracts with customers [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of disaggregation of revenue from contracts with customers [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems" xlink:to="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyFiveMember_019b46bd-0684-7710-83ad-83e51a896ba6_terseLabel_en-US" xlink:label="lab_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyFiveMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">6.625% Guaranteed Bonds due 2035</link:label>
    <link:label id="lab_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyFiveMember_label_en-US" xlink:label="lab_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyFiveMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Six Point Six Two Five Percent Guaranteed Bonds Due Two Thousand Thirty Five [member]</link:label>
    <link:label id="lab_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyFiveMember_documentation_en-US" xlink:label="lab_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyFiveMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Six point six two five percent guaranteed bonds due two thousand thirty five.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyFiveMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyFiveMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyFiveMember" xlink:to="lab_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyFiveMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_RecognizedInProfitOrLossMember_019b46bd-045f-786d-a28a-f2ce42bad6d1_terseLabel_en-US" xlink:label="lab_ck0000932782_RecognizedInProfitOrLossMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Recognized in profit and loss</link:label>
    <link:label id="lab_ck0000932782_RecognizedInProfitOrLossMember_label_en-US" xlink:label="lab_ck0000932782_RecognizedInProfitOrLossMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Recognized in profit or loss [member]</link:label>
    <link:label id="lab_ck0000932782_RecognizedInProfitOrLossMember_documentation_en-US" xlink:label="lab_ck0000932782_RecognizedInProfitOrLossMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Recognized in profit or loss.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RecognizedInProfitOrLossMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RecognizedInProfitOrLossMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_RecognizedInProfitOrLossMember" xlink:to="lab_ck0000932782_RecognizedInProfitOrLossMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PrincipalAmountOutstanding_019b46bd-05e4-7f2e-996a-a9e99487b1c5_terseLabel_en-US" xlink:label="lab_ck0000932782_PrincipalAmountOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Principal amount outstanding (U.S.$)</link:label>
    <link:label id="lab_ck0000932782_PrincipalAmountOutstanding_label_en-US" xlink:label="lab_ck0000932782_PrincipalAmountOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Principal Amount Outstanding</link:label>
    <link:label id="lab_ck0000932782_PrincipalAmountOutstanding_documentation_en-US" xlink:label="lab_ck0000932782_PrincipalAmountOutstanding" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Principal amount outstanding.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PrincipalAmountOutstanding" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PrincipalAmountOutstanding"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PrincipalAmountOutstanding" xlink:to="lab_ck0000932782_PrincipalAmountOutstanding" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PastDueStatusAxis_019b46bd-053c-7a46-b22d-ede76efca18f_terseLabel_en-US" xlink:label="lab_ifrs-full_PastDueStatusAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Past due status [axis]</link:label>
    <link:label id="lab_ifrs-full_PastDueStatusAxis_label_en-US" xlink:label="lab_ifrs-full_PastDueStatusAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Past due status [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PastDueStatusAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PastDueStatusAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PastDueStatusAxis" xlink:to="lab_ifrs-full_PastDueStatusAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LegalProceedingClaimDamagesSoughtValue_019b46bd-0715-789a-ac74-0bf3c65112b3_terseLabel_en-US" xlink:label="lab_ck0000932782_LegalProceedingClaimDamagesSoughtValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Legal proceeding claim damages sought value</link:label>
    <link:label id="lab_ck0000932782_LegalProceedingClaimDamagesSoughtValue_label_en-US" xlink:label="lab_ck0000932782_LegalProceedingClaimDamagesSoughtValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Legal proceeding claim damages sought value</link:label>
    <link:label id="lab_ck0000932782_LegalProceedingClaimDamagesSoughtValue_documentation_en-US" xlink:label="lab_ck0000932782_LegalProceedingClaimDamagesSoughtValue" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Legal proceeding claim damages sought value.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LegalProceedingClaimDamagesSoughtValue" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LegalProceedingClaimDamagesSoughtValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LegalProceedingClaimDamagesSoughtValue" xlink:to="lab_ck0000932782_LegalProceedingClaimDamagesSoughtValue" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FinancialGuarantees_019d9c7c-56b8-7f86-b273-6b4ee6dd918e_verboseLabel_en-US" xlink:label="lab_ck0000932782_FinancialGuarantees" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Guarantees</link:label>
    <link:label id="lab_ck0000932782_FinancialGuarantees_label_en-US" xlink:label="lab_ck0000932782_FinancialGuarantees" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Guarantees</link:label>
    <link:label id="lab_ck0000932782_FinancialGuarantees_documentation_en-US" xlink:label="lab_ck0000932782_FinancialGuarantees" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Guarantees</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FinancialGuarantees" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FinancialGuarantees"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FinancialGuarantees" xlink:to="lab_ck0000932782_FinancialGuarantees" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TwoThousandAndTwentySevenMember_019b46bd-0684-7c7e-b141-0a122e8ad679_terseLabel_en-US" xlink:label="lab_ck0000932782_TwoThousandAndTwentySevenMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Two Thousand Twenty Seven</link:label>
    <link:label id="lab_ck0000932782_TwoThousandAndTwentySevenMember_label_en-US" xlink:label="lab_ck0000932782_TwoThousandAndTwentySevenMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Two Thousand And Twenty Seven [Member]</link:label>
    <link:label id="lab_ck0000932782_TwoThousandAndTwentySevenMember_documentation_en-US" xlink:label="lab_ck0000932782_TwoThousandAndTwentySevenMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Two Thousand And Twenty Seven</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TwoThousandAndTwentySevenMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TwoThousandAndTwentySevenMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TwoThousandAndTwentySevenMember" xlink:to="lab_ck0000932782_TwoThousandAndTwentySevenMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FixedRatePesosMember_019b46bd-0715-7199-a680-7cbd93cc6852_terseLabel_en-US" xlink:label="lab_ck0000932782_FixedRatePesosMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed rate (pesos)</link:label>
    <link:label id="lab_ck0000932782_FixedRatePesosMember_label_en-US" xlink:label="lab_ck0000932782_FixedRatePesosMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed rate (pesos) [member]</link:label>
    <link:label id="lab_ck0000932782_FixedRatePesosMember_documentation_en-US" xlink:label="lab_ck0000932782_FixedRatePesosMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed rate (pesos).</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FixedRatePesosMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FixedRatePesosMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FixedRatePesosMember" xlink:to="lab_ck0000932782_FixedRatePesosMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentLiabilitiesAbstract_019b46bd-0684-7732-bd4d-6ae04e6fd88d_terseLabel_en-US" xlink:label="lab_ifrs-full_NoncurrentLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term liabilities:</link:label>
    <link:label id="lab_ifrs-full_NoncurrentLiabilitiesAbstract_label_en-US" xlink:label="lab_ifrs-full_NoncurrentLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-current liabilities [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLiabilitiesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentLiabilitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentLiabilitiesAbstract" xlink:to="lab_ifrs-full_NoncurrentLiabilitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DerivativeFinancialAssetsLiabilitiesNet_019b46bd-05e4-7e86-8dd5-21952a5b1dd5_terseLabel_en-US" xlink:label="lab_ck0000932782_DerivativeFinancialAssetsLiabilitiesNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net fair value of derivative financial instruments</link:label>
    <link:label id="lab_ck0000932782_DerivativeFinancialAssetsLiabilitiesNet_label_en-US" xlink:label="lab_ck0000932782_DerivativeFinancialAssetsLiabilitiesNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Financial Assets Liabilities, Net</link:label>
    <link:label id="lab_ck0000932782_DerivativeFinancialAssetsLiabilitiesNet_documentation_en-US" xlink:label="lab_ck0000932782_DerivativeFinancialAssetsLiabilitiesNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivative financial assets liabilities, net.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DerivativeFinancialAssetsLiabilitiesNet" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DerivativeFinancialAssetsLiabilitiesNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DerivativeFinancialAssetsLiabilitiesNet" xlink:to="lab_ck0000932782_DerivativeFinancialAssetsLiabilitiesNet" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NumberOfInstallmentPayments_019bd5b8-cc46-790b-9322-6e40996892d9_terseLabel_en-US" xlink:label="lab_ck0000932782_NumberOfInstallmentPayments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of installment payments</link:label>
    <link:label id="lab_ck0000932782_NumberOfInstallmentPayments_label_en-US" xlink:label="lab_ck0000932782_NumberOfInstallmentPayments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Installment Payments</link:label>
    <link:label id="lab_ck0000932782_NumberOfInstallmentPayments_documentation_en-US" xlink:label="lab_ck0000932782_NumberOfInstallmentPayments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number Of Installment Payments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NumberOfInstallmentPayments" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NumberOfInstallmentPayments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NumberOfInstallmentPayments" xlink:to="lab_ck0000932782_NumberOfInstallmentPayments" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsAbstract_019b46bd-0684-7f30-8ea2-6cccfde568ea_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about intangible assets [abstract]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsAbstract_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about intangible assets [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfIntangibleAssetsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfIntangibleAssetsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfIntangibleAssetsAbstract" xlink:to="lab_ifrs-full_DisclosureOfIntangibleAssetsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NinetyOneDaysTIIEPlus400BasisPointsMember_019b46bd-0715-7578-98ff-2f452e3ec7a3_terseLabel_en-US" xlink:label="lab_ck0000932782_NinetyOneDaysTIIEPlus400BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ninety One Days TIIE Plus 400 Basis Points</link:label>
    <link:label id="lab_ck0000932782_NinetyOneDaysTIIEPlus400BasisPointsMember_label_en-US" xlink:label="lab_ck0000932782_NinetyOneDaysTIIEPlus400BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ninety One Days TIIE Plus 400 Basis Points [Member]</link:label>
    <link:label id="lab_ck0000932782_NinetyOneDaysTIIEPlus400BasisPointsMember_documentation_en-US" xlink:label="lab_ck0000932782_NinetyOneDaysTIIEPlus400BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ninety One Days TIIE Plus 400 Basis Points</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NinetyOneDaysTIIEPlus400BasisPointsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NinetyOneDaysTIIEPlus400BasisPointsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NinetyOneDaysTIIEPlus400BasisPointsMember" xlink:to="lab_ck0000932782_NinetyOneDaysTIIEPlus400BasisPointsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedAndUndevelopedReserves_019d8b1c-a97d-7139-990b-85c637f2992a_terseLabel_en-US" xlink:label="lab_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedAndUndevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Extensions and discoveries</link:label>
    <link:label id="lab_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedAndUndevelopedReserves_label_en-US" xlink:label="lab_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedAndUndevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Extensions And Discoveries Of Proved Developed and Undeveloped Reserves</link:label>
    <link:label id="lab_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedAndUndevelopedReserves_documentation_en-US" xlink:label="lab_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedAndUndevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Extensions And Discoveries Of Proved Developed and Undeveloped Reserves</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedAndUndevelopedReserves" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedAndUndevelopedReserves"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedAndUndevelopedReserves" xlink:to="lab_ck0000932782_ExtensionsAndDiscoveriesOfProvedDevelopedAndUndevelopedReserves" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_GovernmentAgencyDomain_019b46bd-05e4-77e7-ba30-a218ab1c532e_terseLabel_en-US" xlink:label="lab_ck0000932782_GovernmentAgencyDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Government Agency [Domain]</link:label>
    <link:label id="lab_ck0000932782_GovernmentAgencyDomain_label_en-US" xlink:label="lab_ck0000932782_GovernmentAgencyDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Government Agency [Domain]</link:label>
    <link:label id="lab_ck0000932782_GovernmentAgencyDomain_documentation_en-US" xlink:label="lab_ck0000932782_GovernmentAgencyDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Government Agency [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GovernmentAgencyDomain" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GovernmentAgencyDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_GovernmentAgencyDomain" xlink:to="lab_ck0000932782_GovernmentAgencyDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_Expenserelatedtodebtissuancecost_019b46bd-053d-7117-aaaa-d1ac7a97098a_terseLabel_en-US" xlink:label="lab_ck0000932782_Expenserelatedtodebtissuancecost" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expense related to issuance of debt</link:label>
    <link:label id="lab_ck0000932782_Expenserelatedtodebtissuancecost_label_en-US" xlink:label="lab_ck0000932782_Expenserelatedtodebtissuancecost" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ExpenseRelatedToDebtIssuanceCost</link:label>
    <link:label id="lab_ck0000932782_Expenserelatedtodebtissuancecost_documentation_en-US" xlink:label="lab_ck0000932782_Expenserelatedtodebtissuancecost" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">ExpenseRelatedToDebtIssuanceCost.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_Expenserelatedtodebtissuancecost" xlink:href="ck0000932782-20251231.xsd#ck0000932782_Expenserelatedtodebtissuancecost"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_Expenserelatedtodebtissuancecost" xlink:to="lab_ck0000932782_Expenserelatedtodebtissuancecost" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ResolutionAxis_019b46bd-05e4-782b-83cb-48e2ee5d2515_terseLabel_en-US" xlink:label="lab_ck0000932782_ResolutionAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Resolution [Axis]</link:label>
    <link:label id="lab_ck0000932782_ResolutionAxis_label_en-US" xlink:label="lab_ck0000932782_ResolutionAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Resolution [Axis]</link:label>
    <link:label id="lab_ck0000932782_ResolutionAxis_documentation_en-US" xlink:label="lab_ck0000932782_ResolutionAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Resolution [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ResolutionAxis" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ResolutionAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ResolutionAxis" xlink:to="lab_ck0000932782_ResolutionAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_GovernmentBondsCollected_019b46bd-053c-7679-b3e6-41fcb3459096_negatedTerseLabel_en-US" xlink:label="lab_ck0000932782_GovernmentBondsCollected" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Government Bonds collected (1)</link:label>
    <link:label id="lab_ck0000932782_GovernmentBondsCollected_label_en-US" xlink:label="lab_ck0000932782_GovernmentBondsCollected" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Government Bonds Collected</link:label>
    <link:label id="lab_ck0000932782_GovernmentBondsCollected_documentation_en-US" xlink:label="lab_ck0000932782_GovernmentBondsCollected" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Government bonds collected.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GovernmentBondsCollected" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GovernmentBondsCollected"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_GovernmentBondsCollected" xlink:to="lab_ck0000932782_GovernmentBondsCollected" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ExploratoryActivityInShallowWatersAndOnshoreRegionsIncorporated_019b46bd-0715-7926-916e-8d713082e7dc_terseLabel_en-US" xlink:label="lab_ck0000932782_ExploratoryActivityInShallowWatersAndOnshoreRegionsIncorporated" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exploratory activity in shallow waters and onshore regions incorporated</link:label>
    <link:label id="lab_ck0000932782_ExploratoryActivityInShallowWatersAndOnshoreRegionsIncorporated_label_en-US" xlink:label="lab_ck0000932782_ExploratoryActivityInShallowWatersAndOnshoreRegionsIncorporated" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exploratory Activity In Shallow Waters And Onshore Regions Incorporated</link:label>
    <link:label id="lab_ck0000932782_ExploratoryActivityInShallowWatersAndOnshoreRegionsIncorporated_documentation_en-US" xlink:label="lab_ck0000932782_ExploratoryActivityInShallowWatersAndOnshoreRegionsIncorporated" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Exploratoroy activity in shallow waters and onshore regions incorporated.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ExploratoryActivityInShallowWatersAndOnshoreRegionsIncorporated" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ExploratoryActivityInShallowWatersAndOnshoreRegionsIncorporated"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ExploratoryActivityInShallowWatersAndOnshoreRegionsIncorporated" xlink:to="lab_ck0000932782_ExploratoryActivityInShallowWatersAndOnshoreRegionsIncorporated" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_VariableRatePesosMember_019b46bd-05e4-7f47-945b-d4df6c1de051_terseLabel_en-US" xlink:label="lab_ck0000932782_VariableRatePesosMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Variable rate (pesos)</link:label>
    <link:label id="lab_ck0000932782_VariableRatePesosMember_label_en-US" xlink:label="lab_ck0000932782_VariableRatePesosMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable rate (pesos) [member]</link:label>
    <link:label id="lab_ck0000932782_VariableRatePesosMember_documentation_en-US" xlink:label="lab_ck0000932782_VariableRatePesosMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Variable rate (pesos).</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_VariableRatePesosMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_VariableRatePesosMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_VariableRatePesosMember" xlink:to="lab_ck0000932782_VariableRatePesosMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfStandardizedMeasureOfDiscountedFutureNetCashFlowsExplanatory_019b46bd-0715-7d22-a183-83b2e63805a7_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfStandardizedMeasureOfDiscountedFutureNetCashFlowsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of standardized measure of discounted future net cash flows</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfStandardizedMeasureOfDiscountedFutureNetCashFlowsExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfStandardizedMeasureOfDiscountedFutureNetCashFlowsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Standardized Measure Of Discounted Future Net Cash Flows [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfStandardizedMeasureOfDiscountedFutureNetCashFlowsExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfStandardizedMeasureOfDiscountedFutureNetCashFlowsExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of standardized measure of discounted future net cash flows.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfStandardizedMeasureOfDiscountedFutureNetCashFlowsExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfStandardizedMeasureOfDiscountedFutureNetCashFlowsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfStandardizedMeasureOfDiscountedFutureNetCashFlowsExplanatory" xlink:to="lab_ck0000932782_DisclosureOfStandardizedMeasureOfDiscountedFutureNetCashFlowsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LesseeLeaseTerms_019b46bd-05e4-7f06-82ba-13491a2c6a1c_terseLabel_en-US" xlink:label="lab_ck0000932782_LesseeLeaseTerms" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease term</link:label>
    <link:label id="lab_ck0000932782_LesseeLeaseTerms_label_en-US" xlink:label="lab_ck0000932782_LesseeLeaseTerms" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Lease Terms</link:label>
    <link:label id="lab_ck0000932782_LesseeLeaseTerms_documentation_en-US" xlink:label="lab_ck0000932782_LesseeLeaseTerms" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee, Lease Terms</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LesseeLeaseTerms" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LesseeLeaseTerms"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LesseeLeaseTerms" xlink:to="lab_ck0000932782_LesseeLeaseTerms" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ExpenseBenefitForDeferredProfitSharingDuty_019b46bd-05e4-7b2b-b42a-b9e34f949374_terseLabel_en-US" xlink:label="lab_ck0000932782_ExpenseBenefitForDeferredProfitSharingDuty" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred DUC expense</link:label>
    <link:label id="lab_ck0000932782_ExpenseBenefitForDeferredProfitSharingDuty_label_en-US" xlink:label="lab_ck0000932782_ExpenseBenefitForDeferredProfitSharingDuty" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expense Benefit for Deferred Profit- sharing Duty</link:label>
    <link:label id="lab_ck0000932782_ExpenseBenefitForDeferredProfitSharingDuty_documentation_en-US" xlink:label="lab_ck0000932782_ExpenseBenefitForDeferredProfitSharingDuty" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Expense Benefit for Deferred Profit- sharing Duty</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ExpenseBenefitForDeferredProfitSharingDuty" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ExpenseBenefitForDeferredProfitSharingDuty"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ExpenseBenefitForDeferredProfitSharingDuty" xlink:to="lab_ck0000932782_ExpenseBenefitForDeferredProfitSharingDuty" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PercentageOfGeneralVatTaxRate_019b46bd-05e4-71ef-a499-87f660222419_terseLabel_en-US" xlink:label="lab_ck0000932782_PercentageOfGeneralVatTaxRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of general VAT tax rate</link:label>
    <link:label id="lab_ck0000932782_PercentageOfGeneralVatTaxRate_label_en-US" xlink:label="lab_ck0000932782_PercentageOfGeneralVatTaxRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage of general VAT tax rate</link:label>
    <link:label id="lab_ck0000932782_PercentageOfGeneralVatTaxRate_documentation_en-US" xlink:label="lab_ck0000932782_PercentageOfGeneralVatTaxRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of general VAT tax rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PercentageOfGeneralVatTaxRate" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PercentageOfGeneralVatTaxRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PercentageOfGeneralVatTaxRate" xlink:to="lab_ck0000932782_PercentageOfGeneralVatTaxRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BlockEighteenMember_019b46bd-0684-790d-a73c-6e1a35676949_terseLabel_en-US" xlink:label="lab_ck0000932782_BlockEighteenMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Block 18</link:label>
    <link:label id="lab_ck0000932782_BlockEighteenMember_label_en-US" xlink:label="lab_ck0000932782_BlockEighteenMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Block eighteen [member]</link:label>
    <link:label id="lab_ck0000932782_BlockEighteenMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockEighteenMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block eighteen.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockEighteenMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockEighteenMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BlockEighteenMember" xlink:to="lab_ck0000932782_BlockEighteenMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NetForeignExchangeGainLoss_019b46bd-0715-7946-af54-33b4ec38763c_terseLabel_en-US" xlink:label="lab_ck0000932782_NetForeignExchangeGainLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign exchange income (loss), net</link:label>
    <link:label id="lab_ck0000932782_NetForeignExchangeGainLoss_label_en-US" xlink:label="lab_ck0000932782_NetForeignExchangeGainLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Foreign Exchange Gain Loss</link:label>
    <link:label id="lab_ck0000932782_NetForeignExchangeGainLoss_documentation_en-US" xlink:label="lab_ck0000932782_NetForeignExchangeGainLoss" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net foreign exchange gain (loss).</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NetForeignExchangeGainLoss" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NetForeignExchangeGainLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NetForeignExchangeGainLoss" xlink:to="lab_ck0000932782_NetForeignExchangeGainLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SwissFrancsMember_019b46bd-0684-79d2-945b-4e4ccb8d590c_terseLabel_en-US" xlink:label="lab_ck0000932782_SwissFrancsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Swiss francs</link:label>
    <link:label id="lab_ck0000932782_SwissFrancsMember_label_en-US" xlink:label="lab_ck0000932782_SwissFrancsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Swiss Francs [member]</link:label>
    <link:label id="lab_ck0000932782_SwissFrancsMember_documentation_en-US" xlink:label="lab_ck0000932782_SwissFrancsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Swiss francs.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SwissFrancsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SwissFrancsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SwissFrancsMember" xlink:to="lab_ck0000932782_SwissFrancsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DeferredTaxIncomeRelatingToProvisions_019b46bd-0684-7fe5-a6e9-8f4cefddbb90_terseLabel_en-US" xlink:label="lab_ck0000932782_DeferredTaxIncomeRelatingToProvisions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provisions</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxIncomeRelatingToProvisions_label_en-US" xlink:label="lab_ck0000932782_DeferredTaxIncomeRelatingToProvisions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Tax Income Relating To Provisions</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxIncomeRelatingToProvisions_documentation_en-US" xlink:label="lab_ck0000932782_DeferredTaxIncomeRelatingToProvisions" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred tax income relating to provisions.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DeferredTaxIncomeRelatingToProvisions" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DeferredTaxIncomeRelatingToProvisions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DeferredTaxIncomeRelatingToProvisions" xlink:to="lab_ck0000932782_DeferredTaxIncomeRelatingToProvisions" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyEightMember_019b46bd-0684-7e8c-87a5-6e19533ba872_terseLabel_en-US" xlink:label="lab_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyEightMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">6.625% Guaranteed Bonds due 2038</link:label>
    <link:label id="lab_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyEightMember_label_en-US" xlink:label="lab_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyEightMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Six Point Six Two Five Percent Guaranteed Bonds Due Two Thousand Thirty Eight [member]</link:label>
    <link:label id="lab_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyEightMember_documentation_en-US" xlink:label="lab_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyEightMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Six point six two five percent guaranteed bonds due two thousand thirty eight.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyEightMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyEightMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyEightMember" xlink:to="lab_ck0000932782_SixPointSixTwoFivePercentGuaranteedBondsDueTwoThousandThirtyEightMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EmbeddedDerivativesMember_019b46bd-0715-78ab-b6e6-7c00b5c8af5d_terseLabel_en-US" xlink:label="lab_ck0000932782_EmbeddedDerivativesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Currency options</link:label>
    <link:label id="lab_ck0000932782_EmbeddedDerivativesMember_label_en-US" xlink:label="lab_ck0000932782_EmbeddedDerivativesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Embedded Derivatives [Member]</link:label>
    <link:label id="lab_ck0000932782_EmbeddedDerivativesMember_documentation_en-US" xlink:label="lab_ck0000932782_EmbeddedDerivativesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Embedded Derivatives</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EmbeddedDerivativesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EmbeddedDerivativesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EmbeddedDerivativesMember" xlink:to="lab_ck0000932782_EmbeddedDerivativesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_VariableRateDollarsMember_019b46bd-0715-7db9-96ab-3d26dbf764ec_terseLabel_en-US" xlink:label="lab_ck0000932782_VariableRateDollarsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Variable rate (U.S. dollars)</link:label>
    <link:label id="lab_ck0000932782_VariableRateDollarsMember_label_en-US" xlink:label="lab_ck0000932782_VariableRateDollarsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable rate (U.S. dollars) [member]</link:label>
    <link:label id="lab_ck0000932782_VariableRateDollarsMember_documentation_en-US" xlink:label="lab_ck0000932782_VariableRateDollarsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Variable rate (U.S. dollars).</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_VariableRateDollarsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_VariableRateDollarsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_VariableRateDollarsMember" xlink:to="lab_ck0000932782_VariableRateDollarsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DerivativeFinancialLiabilities_019b46bd-0715-77bc-9166-9965e05db62a_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_DerivativeFinancialLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Total liabilities</link:label>
    <link:label id="lab_ifrs-full_DerivativeFinancialLiabilities_label_en-US" xlink:label="lab_ifrs-full_DerivativeFinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative financial liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DerivativeFinancialLiabilities" xlink:to="lab_ifrs-full_DerivativeFinancialLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PozaRicaMember_019b46bd-05e4-749f-b613-aa2de7c3aadf_terseLabel_en-US" xlink:label="lab_ck0000932782_PozaRicaMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Poza Rica</link:label>
    <link:label id="lab_ck0000932782_PozaRicaMember_label_en-US" xlink:label="lab_ck0000932782_PozaRicaMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Poza Rica [Member]</link:label>
    <link:label id="lab_ck0000932782_PozaRicaMember_documentation_en-US" xlink:label="lab_ck0000932782_PozaRicaMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Poza Rica.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PozaRicaMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PozaRicaMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PozaRicaMember" xlink:to="lab_ck0000932782_PozaRicaMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfDefinedBenefitPlansExplanatory_019b46bd-0684-7b2a-8a4f-a04ba530af49_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDefinedBenefitPlansExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Amounts Associated with PEMEX's Labor Obligations</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDefinedBenefitPlansExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDefinedBenefitPlansExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of defined benefit plans [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDefinedBenefitPlansExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDefinedBenefitPlansExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfDefinedBenefitPlansExplanatory" xlink:to="lab_ifrs-full_DisclosureOfDefinedBenefitPlansExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DeferredIncomeTaxPropertyPlantAndEquipment_019b46bd-05e4-7c03-85d8-f8940cfed749_verboseLabel_en-US" xlink:label="lab_ck0000932782_DeferredIncomeTaxPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Wells, pipelines, properties and equipment</link:label>
    <link:label id="lab_ck0000932782_DeferredIncomeTaxPropertyPlantAndEquipment_label_en-US" xlink:label="lab_ck0000932782_DeferredIncomeTaxPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Income Tax Property Plant And Equipment</link:label>
    <link:label id="lab_ck0000932782_DeferredIncomeTaxPropertyPlantAndEquipment_documentation_en-US" xlink:label="lab_ck0000932782_DeferredIncomeTaxPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred income tax property plant and equipment.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DeferredIncomeTaxPropertyPlantAndEquipment" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DeferredIncomeTaxPropertyPlantAndEquipment"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DeferredIncomeTaxPropertyPlantAndEquipment" xlink:to="lab_ck0000932782_DeferredIncomeTaxPropertyPlantAndEquipment" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_RetirementAndPostEmploymentBenefitsMember_019b46bd-0715-7ef5-b6ec-4ce73aac5590_terseLabel_en-US" xlink:label="lab_ck0000932782_RetirementAndPostEmploymentBenefitsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liability for defined benefits at retirement and post-employment at the end of the year</link:label>
    <link:label id="lab_ck0000932782_RetirementAndPostEmploymentBenefitsMember_019b46bd-0715-7ddc-85b7-ac4b84c71f8f_verboseLabel_en-US" xlink:label="lab_ck0000932782_RetirementAndPostEmploymentBenefitsMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Changes in the liability for defined benefits</link:label>
    <link:label id="lab_ck0000932782_RetirementAndPostEmploymentBenefitsMember_label_en-US" xlink:label="lab_ck0000932782_RetirementAndPostEmploymentBenefitsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retirement And Post Employment Benefits [member]</link:label>
    <link:label id="lab_ck0000932782_RetirementAndPostEmploymentBenefitsMember_documentation_en-US" xlink:label="lab_ck0000932782_RetirementAndPostEmploymentBenefitsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Retirement and post employment benefits.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RetirementAndPostEmploymentBenefitsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RetirementAndPostEmploymentBenefitsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_RetirementAndPostEmploymentBenefitsMember" xlink:to="lab_ck0000932782_RetirementAndPostEmploymentBenefitsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DecreaseIncreaseInNetDefinedBenefitLiabilityAssetResultingFromGainLossOnRemeasurementInOtherComprehensiveIncomeNetOfTax_019b46bd-0715-73d3-866b-7a5d271da0c5_terseLabel_en-US" xlink:label="lab_ck0000932782_DecreaseIncreaseInNetDefinedBenefitLiabilityAssetResultingFromGainLossOnRemeasurementInOtherComprehensiveIncomeNetOfTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on remeasurement in other comprehensive income net of tax</link:label>
    <link:label id="lab_ck0000932782_DecreaseIncreaseInNetDefinedBenefitLiabilityAssetResultingFromGainLossOnRemeasurementInOtherComprehensiveIncomeNetOfTax_label_en-US" xlink:label="lab_ck0000932782_DecreaseIncreaseInNetDefinedBenefitLiabilityAssetResultingFromGainLossOnRemeasurementInOtherComprehensiveIncomeNetOfTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on remeasurement in other comprehensive income net of tax</link:label>
    <link:label id="lab_ck0000932782_DecreaseIncreaseInNetDefinedBenefitLiabilityAssetResultingFromGainLossOnRemeasurementInOtherComprehensiveIncomeNetOfTax_documentation_en-US" xlink:label="lab_ck0000932782_DecreaseIncreaseInNetDefinedBenefitLiabilityAssetResultingFromGainLossOnRemeasurementInOtherComprehensiveIncomeNetOfTax" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Decrease (increase) in net defined benefit liability (asset) resulting from gain (loss) on remeasurement in other comprehensive income net of tax</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DecreaseIncreaseInNetDefinedBenefitLiabilityAssetResultingFromGainLossOnRemeasurementInOtherComprehensiveIncomeNetOfTax" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DecreaseIncreaseInNetDefinedBenefitLiabilityAssetResultingFromGainLossOnRemeasurementInOtherComprehensiveIncomeNetOfTax"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DecreaseIncreaseInNetDefinedBenefitLiabilityAssetResultingFromGainLossOnRemeasurementInOtherComprehensiveIncomeNetOfTax" xlink:to="lab_ck0000932782_DecreaseIncreaseInNetDefinedBenefitLiabilityAssetResultingFromGainLossOnRemeasurementInOtherComprehensiveIncomeNetOfTax" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PemexIndustrialTransformationMember_019b46bd-0684-7b89-ae25-40bffe91483f_terseLabel_en-US" xlink:label="lab_ck0000932782_PemexIndustrialTransformationMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pemex Industrial Transformation</link:label>
    <link:label id="lab_ck0000932782_PemexIndustrialTransformationMember_label_en-US" xlink:label="lab_ck0000932782_PemexIndustrialTransformationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pemex Industrial Transformation [member]</link:label>
    <link:label id="lab_ck0000932782_PemexIndustrialTransformationMember_documentation_en-US" xlink:label="lab_ck0000932782_PemexIndustrialTransformationMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Pemex industrial transformation.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PemexIndustrialTransformationMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PemexIndustrialTransformationMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PemexIndustrialTransformationMember" xlink:to="lab_ck0000932782_PemexIndustrialTransformationMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TotalDutiesTaxesAndOther_019b46bd-053c-759c-bb8f-5f17ba68b252_verboseLabel_en-US" xlink:label="lab_ck0000932782_TotalDutiesTaxesAndOther" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total taxes, duties and other</link:label>
    <link:label id="lab_ck0000932782_TotalDutiesTaxesAndOther_label_en-US" xlink:label="lab_ck0000932782_TotalDutiesTaxesAndOther" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Total Duties Taxes and Other</link:label>
    <link:label id="lab_ck0000932782_TotalDutiesTaxesAndOther_documentation_en-US" xlink:label="lab_ck0000932782_TotalDutiesTaxesAndOther" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Total duties taxes and other.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TotalDutiesTaxesAndOther" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TotalDutiesTaxesAndOther"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TotalDutiesTaxesAndOther" xlink:to="lab_ck0000932782_TotalDutiesTaxesAndOther" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_GrossCarryingAmountMember_019b46bd-0684-7847-b196-95f420e1cc78_terseLabel_en-US" xlink:label="lab_ifrs-full_GrossCarryingAmountMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total carrying amount</link:label>
    <link:label id="lab_ifrs-full_GrossCarryingAmountMember_019b46bd-0684-7348-a6dc-0d6ce5bade91_verboseLabel_en-US" xlink:label="lab_ifrs-full_GrossCarryingAmountMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ifrs-full_GrossCarryingAmountMember_019b46bd-0684-74f7-854d-c0046a18eb68_netLabel_en-US" xlink:label="lab_ifrs-full_GrossCarryingAmountMember" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Investment</link:label>
    <link:label id="lab_ifrs-full_GrossCarryingAmountMember_label_en-US" xlink:label="lab_ifrs-full_GrossCarryingAmountMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gross carrying amount [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GrossCarryingAmountMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GrossCarryingAmountMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_GrossCarryingAmountMember" xlink:to="lab_ifrs-full_GrossCarryingAmountMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ApplicableTaxRate_019b46bd-053c-7011-b35b-acedb531eaf4_terseLabel_en-US" xlink:label="lab_ifrs-full_ApplicableTaxRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage income tax rate</link:label>
    <link:label id="lab_ifrs-full_ApplicableTaxRate_label_en-US" xlink:label="lab_ifrs-full_ApplicableTaxRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Applicable tax rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ApplicableTaxRate" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ApplicableTaxRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ApplicableTaxRate" xlink:to="lab_ifrs-full_ApplicableTaxRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfInventoriesExplanatory_019b46bd-053d-7374-82c3-cc6f019e1d80_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfInventoriesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventories</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfInventoriesExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfInventoriesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of inventories [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfInventoriesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfInventoriesExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfInventoriesExplanatory" xlink:to="lab_ifrs-full_DisclosureOfInventoriesExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusDomain_019b46bd-05e4-7238-829c-0314e33871c0_terseLabel_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment by operating lease status</link:label>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusDomain_label_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, plant and equipment by operating lease status [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusDomain" xlink:to="lab_ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PozaRicaGasProcessorComplexMember_019b46bd-0715-76be-b298-6780d2fc586d_terseLabel_en-US" xlink:label="lab_ck0000932782_PozaRicaGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Poza Rica Gas Processor Complex</link:label>
    <link:label id="lab_ck0000932782_PozaRicaGasProcessorComplexMember_label_en-US" xlink:label="lab_ck0000932782_PozaRicaGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Poza Rica Gas Processor Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_PozaRicaGasProcessorComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_PozaRicaGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Poza Rica Gas Processor Complex</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PozaRicaGasProcessorComplexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PozaRicaGasProcessorComplexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PozaRicaGasProcessorComplexMember" xlink:to="lab_ck0000932782_PozaRicaGasProcessorComplexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NotLaterThanOneYearMember_019b46bd-053c-78e1-8c7b-49056c6468b6_netLabel_en-US" xlink:label="lab_ifrs-full_NotLaterThanOneYearMember" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">2026</link:label>
    <link:label id="lab_ifrs-full_NotLaterThanOneYearMember_019b46bd-053c-755b-ba10-c3b4946a11ce_verboseLabel_en-US" xlink:label="lab_ifrs-full_NotLaterThanOneYearMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">2026</link:label>
    <link:label id="lab_ifrs-full_NotLaterThanOneYearMember_019b46bd-053c-7a34-b103-3e581bf91bf1_terseLabel_en-US" xlink:label="lab_ifrs-full_NotLaterThanOneYearMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Up to 1 year</link:label>
    <link:label id="lab_ifrs-full_NotLaterThanOneYearMember_label_en-US" xlink:label="lab_ifrs-full_NotLaterThanOneYearMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Not later than one year [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NotLaterThanOneYearMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NotLaterThanOneYearMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NotLaterThanOneYearMember" xlink:to="lab_ifrs-full_NotLaterThanOneYearMember" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_EuropeMember_019b46bd-053c-7a95-9eda-4e607e5d3b5d_terseLabel_en-US" xlink:label="lab_srt_EuropeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Europe</link:label>
    <link:label id="lab_srt_EuropeMember_label_en-US" xlink:label="lab_srt_EuropeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Europe [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EuropeMember" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_EuropeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_EuropeMember" xlink:to="lab_srt_EuropeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BankIndebtednessThatMayBeUsedToPartiallyCoverFinancialBalanceInNextYear_019b46bd-0715-72a0-b7ce-870f8c075a8f_terseLabel_en-US" xlink:label="lab_ck0000932782_BankIndebtednessThatMayBeUsedToPartiallyCoverFinancialBalanceInNextYear" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Indebtedness that may be used to partially cover financial balance in next year</link:label>
    <link:label id="lab_ck0000932782_BankIndebtednessThatMayBeUsedToPartiallyCoverFinancialBalanceInNextYear_label_en-US" xlink:label="lab_ck0000932782_BankIndebtednessThatMayBeUsedToPartiallyCoverFinancialBalanceInNextYear" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Bank Indebtedness That May Be Used To Partially Cover Financial Balance In Next Year</link:label>
    <link:label id="lab_ck0000932782_BankIndebtednessThatMayBeUsedToPartiallyCoverFinancialBalanceInNextYear_documentation_en-US" xlink:label="lab_ck0000932782_BankIndebtednessThatMayBeUsedToPartiallyCoverFinancialBalanceInNextYear" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Bank Indebtedness That May Be Used To Partially Cover Financial Balance In Next Year</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BankIndebtednessThatMayBeUsedToPartiallyCoverFinancialBalanceInNextYear" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BankIndebtednessThatMayBeUsedToPartiallyCoverFinancialBalanceInNextYear"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BankIndebtednessThatMayBeUsedToPartiallyCoverFinancialBalanceInNextYear" xlink:to="lab_ck0000932782_BankIndebtednessThatMayBeUsedToPartiallyCoverFinancialBalanceInNextYear" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BlockTrionMember_019b46bd-05e4-7e0a-b370-cb17a8280138_terseLabel_en-US" xlink:label="lab_ck0000932782_BlockTrionMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tri&#243;n</link:label>
    <link:label id="lab_ck0000932782_BlockTrionMember_label_en-US" xlink:label="lab_ck0000932782_BlockTrionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Block Trion [member]</link:label>
    <link:label id="lab_ck0000932782_BlockTrionMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockTrionMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block Trion.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockTrionMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockTrionMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BlockTrionMember" xlink:to="lab_ck0000932782_BlockTrionMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_Debt_019b46bd-053d-7a33-bf8b-ebcb14867b10_terseLabel_en-US" xlink:label="lab_ck0000932782_Debt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Outstanding debt</link:label>
    <link:label id="lab_ck0000932782_Debt_label_en-US" xlink:label="lab_ck0000932782_Debt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt</link:label>
    <link:label id="lab_ck0000932782_Debt_documentation_en-US" xlink:label="lab_ck0000932782_Debt" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_Debt" xlink:href="ck0000932782-20251231.xsd#ck0000932782_Debt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_Debt" xlink:to="lab_ck0000932782_Debt" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InterestIncomeOnPromissoryNotes_019b46bd-05e4-74a3-9ebd-d6cd89b243c6_terseLabel_en-US" xlink:label="lab_ck0000932782_InterestIncomeOnPromissoryNotes" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Promissory note interest amount</link:label>
    <link:label id="lab_ck0000932782_InterestIncomeOnPromissoryNotes_label_en-US" xlink:label="lab_ck0000932782_InterestIncomeOnPromissoryNotes" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest income on promissory notes</link:label>
    <link:label id="lab_ck0000932782_InterestIncomeOnPromissoryNotes_documentation_en-US" xlink:label="lab_ck0000932782_InterestIncomeOnPromissoryNotes" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interest income on promissory notes.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterestIncomeOnPromissoryNotes" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterestIncomeOnPromissoryNotes"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterestIncomeOnPromissoryNotes" xlink:to="lab_ck0000932782_InterestIncomeOnPromissoryNotes" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SummaryOfOtherAccountsReceivableTextBlock_019b46bd-045f-709d-acff-b6aef83f0b94_terseLabel_en-US" xlink:label="lab_ck0000932782_SummaryOfOtherAccountsReceivableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Other Accounts Receivable</link:label>
    <link:label id="lab_ck0000932782_SummaryOfOtherAccountsReceivableTextBlock_label_en-US" xlink:label="lab_ck0000932782_SummaryOfOtherAccountsReceivableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Summary of Other Accounts Receivable [Text Block]</link:label>
    <link:label id="lab_ck0000932782_SummaryOfOtherAccountsReceivableTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_SummaryOfOtherAccountsReceivableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Summary of Other Accounts Receivable.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SummaryOfOtherAccountsReceivableTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SummaryOfOtherAccountsReceivableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SummaryOfOtherAccountsReceivableTextBlock" xlink:to="lab_ck0000932782_SummaryOfOtherAccountsReceivableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LongtermBorrowings_019b46bd-053c-774b-9c9c-1f63a5c10627_terseLabel_en-US" xlink:label="lab_ifrs-full_LongtermBorrowings" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt, net of current portion</link:label>
    <link:label id="lab_ifrs-full_LongtermBorrowings_019b46bd-053c-788a-9a84-eacaa2966835_verboseLabel_en-US" xlink:label="lab_ifrs-full_LongtermBorrowings" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt</link:label>
    <link:label id="lab_ifrs-full_LongtermBorrowings_label_en-US" xlink:label="lab_ifrs-full_LongtermBorrowings" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-current portion of non-current borrowings</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LongtermBorrowings" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LongtermBorrowings"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LongtermBorrowings" xlink:to="lab_ifrs-full_LongtermBorrowings" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories_019b46bd-05e4-73ec-90eb-ce6bc71ec7aa_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventories</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments for decrease (increase) in inventories</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInInventories"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:to="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DiscountRate_019b46bd-05e4-7106-bb4f-a1f6351b68bb_terseLabel_en-US" xlink:label="lab_ck0000932782_DiscountRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pre-tax discount rate</link:label>
    <link:label id="lab_ck0000932782_DiscountRate_label_en-US" xlink:label="lab_ck0000932782_DiscountRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Discount Rate</link:label>
    <link:label id="lab_ck0000932782_DiscountRate_documentation_en-US" xlink:label="lab_ck0000932782_DiscountRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Discount rate.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DiscountRate" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DiscountRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DiscountRate" xlink:to="lab_ck0000932782_DiscountRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipmentMember_019b46bd-0684-77bc-aea3-4644c4efefdb_terseLabel_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment</link:label>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipmentMember_label_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, plant and equipment [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipmentMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PropertyPlantAndEquipmentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PropertyPlantAndEquipmentMember" xlink:to="lab_ifrs-full_PropertyPlantAndEquipmentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesAbstract_019b46bd-0684-7501-bb27-9f33b6a39c47_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure - Supplementary Information on Oil and Gas Exploration and Production Activities (Unaudited) - Disclosure of Changes in standardized Measure of Discounted Future Net Cash Flows [Abstract]</link:label>
    <link:label id="lab_ck0000932782_DisclosureSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesAbstract_label_en-US" xlink:label="lab_ck0000932782_DisclosureSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure - supplementary information on oil and gas exploration and production activities [Abstract]</link:label>
    <link:label id="lab_ck0000932782_DisclosureSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesAbstract_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure - Supplementary Information on Oil and Gas Exploration and Production Activities (Unaudited) - Disclosure of Changes in standardized Measure of Discounted Future Net Cash Flows [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesAbstract" xlink:to="lab_ck0000932782_DisclosureSupplementaryInformationOnOilAndGasExplorationAndProductionActivitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_019b46bd-0460-76ba-be00-a41b702ecf4e_terseLabel_en-US" xlink:label="lab_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loans obtained from financial institutions</link:label>
    <link:label id="lab_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_label_en-US" xlink:label="lab_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from borrowings, classified as financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:to="lab_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_019b46bd-0684-7f68-8ce5-2e791eaf02e6_negatedLabel_en-US" xlink:label="lab_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Lease payments</link:label>
    <link:label id="lab_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_label_en-US" xlink:label="lab_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments of lease liabilities, classified as financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:to="lab_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SeriesOfDevelopmentBondsDomain_019b46bd-0684-7e05-9b8a-0270909774da_terseLabel_en-US" xlink:label="lab_ck0000932782_SeriesOfDevelopmentBondsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Series Of Development Bonds [Domain]</link:label>
    <link:label id="lab_ck0000932782_SeriesOfDevelopmentBondsDomain_label_en-US" xlink:label="lab_ck0000932782_SeriesOfDevelopmentBondsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Series Of Development Bonds [Domain]</link:label>
    <link:label id="lab_ck0000932782_SeriesOfDevelopmentBondsDomain_documentation_en-US" xlink:label="lab_ck0000932782_SeriesOfDevelopmentBondsDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Series Of Development Bonds [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SeriesOfDevelopmentBondsDomain" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SeriesOfDevelopmentBondsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SeriesOfDevelopmentBondsDomain" xlink:to="lab_ck0000932782_SeriesOfDevelopmentBondsDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TaxEffectOfInflationOnTaxValues_019b46bd-0684-7873-b22a-4c9677914302_terseLabel_en-US" xlink:label="lab_ck0000932782_TaxEffectOfInflationOnTaxValues" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tax effect of inflation-net</link:label>
    <link:label id="lab_ck0000932782_TaxEffectOfInflationOnTaxValues_label_en-US" xlink:label="lab_ck0000932782_TaxEffectOfInflationOnTaxValues" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tax Effect of Inflation on Tax Values</link:label>
    <link:label id="lab_ck0000932782_TaxEffectOfInflationOnTaxValues_documentation_en-US" xlink:label="lab_ck0000932782_TaxEffectOfInflationOnTaxValues" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tax effect of inflation on tax values.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TaxEffectOfInflationOnTaxValues" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TaxEffectOfInflationOnTaxValues"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TaxEffectOfInflationOnTaxValues" xlink:to="lab_ck0000932782_TaxEffectOfInflationOnTaxValues" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CrossCurrencySwapsMember_019b46bd-0460-75ab-936c-d667f14fe26b_terseLabel_en-US" xlink:label="lab_ck0000932782_CrossCurrencySwapsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cross-currency swaps</link:label>
    <link:label id="lab_ck0000932782_CrossCurrencySwapsMember_label_en-US" xlink:label="lab_ck0000932782_CrossCurrencySwapsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cross Currency Swaps [member]</link:label>
    <link:label id="lab_ck0000932782_CrossCurrencySwapsMember_documentation_en-US" xlink:label="lab_ck0000932782_CrossCurrencySwapsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cross currency swaps.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CrossCurrencySwapsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CrossCurrencySwapsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CrossCurrencySwapsMember" xlink:to="lab_ck0000932782_CrossCurrencySwapsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PaymentsInRespectOfSettlementsNetDefinedBenefitLiabilityAsset_019b46bd-0684-772a-abc6-50c785093900_terseLabel_en-US" xlink:label="lab_ifrs-full_PaymentsInRespectOfSettlementsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payments by the pension fund</link:label>
    <link:label id="lab_ifrs-full_PaymentsInRespectOfSettlementsNetDefinedBenefitLiabilityAsset_label_en-US" xlink:label="lab_ifrs-full_PaymentsInRespectOfSettlementsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Decrease (increase) in net defined benefit liability (asset) resulting from payments in respect of settlements</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsInRespectOfSettlementsNetDefinedBenefitLiabilityAsset" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PaymentsInRespectOfSettlementsNetDefinedBenefitLiabilityAsset"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PaymentsInRespectOfSettlementsNetDefinedBenefitLiabilityAsset" xlink:to="lab_ifrs-full_PaymentsInRespectOfSettlementsNetDefinedBenefitLiabilityAsset" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TwentyDayDeltaGammaRiskAnalysisMember_019b46bd-0715-729b-bb8c-d14ee89f738d_terseLabel_en-US" xlink:label="lab_ck0000932782_TwentyDayDeltaGammaRiskAnalysisMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Twenty day delta gamma risk analysis</link:label>
    <link:label id="lab_ck0000932782_TwentyDayDeltaGammaRiskAnalysisMember_label_en-US" xlink:label="lab_ck0000932782_TwentyDayDeltaGammaRiskAnalysisMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Twenty Day Delta Gamma Risk Analysis [member]</link:label>
    <link:label id="lab_ck0000932782_TwentyDayDeltaGammaRiskAnalysisMember_documentation_en-US" xlink:label="lab_ck0000932782_TwentyDayDeltaGammaRiskAnalysisMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Twenty day delta gamma risk analysis.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TwentyDayDeltaGammaRiskAnalysisMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TwentyDayDeltaGammaRiskAnalysisMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TwentyDayDeltaGammaRiskAnalysisMember" xlink:to="lab_ck0000932782_TwentyDayDeltaGammaRiskAnalysisMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEPlus315BasisPointsMember_019b46bd-05e4-7ada-b9c6-008ba2304b50_terseLabel_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEPlus315BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE Plus 315 Basis Points</link:label>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEPlus315BasisPointsMember_label_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEPlus315BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE Plus 315 Basis Points [Member]</link:label>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEPlus315BasisPointsMember_documentation_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEPlus315BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE Plus 315 Basis Points</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TwentyEightDaysTIIEPlus315BasisPointsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TwentyEightDaysTIIEPlus315BasisPointsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TwentyEightDaysTIIEPlus315BasisPointsMember" xlink:to="lab_ck0000932782_TwentyEightDaysTIIEPlus315BasisPointsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FloatingInterestRateMember_019d3dae-ad81-7498-8b3e-769661655a9d_terseLabel_en-US" xlink:label="lab_ifrs-full_FloatingInterestRateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Floating interest rate</link:label>
    <link:label id="lab_ifrs-full_FloatingInterestRateMember_label_en-US" xlink:label="lab_ifrs-full_FloatingInterestRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Floating interest rate [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FloatingInterestRateMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FloatingInterestRateMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FloatingInterestRateMember" xlink:to="lab_ifrs-full_FloatingInterestRateMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DiscountRateImpairmentReversal_019bba7a-f068-79c6-afcc-42cb6f36721b_terseLabel_en-US" xlink:label="lab_ck0000932782_DiscountRateImpairmentReversal" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Discount rate, impairment reversal</link:label>
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    <link:label id="lab_ck0000932782_DiscountRateImpairmentReversal_documentation_en-US" xlink:label="lab_ck0000932782_DiscountRateImpairmentReversal" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Discount Rate, Impairment Reversal</link:label>
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    <link:label id="lab_ck0000932782_LongTermContractualLiabilitiesAbstract_documentation_en-US" xlink:label="lab_ck0000932782_LongTermContractualLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Long Term Contractual Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LongTermContractualLiabilitiesAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LongTermContractualLiabilitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LongTermContractualLiabilitiesAbstract" xlink:to="lab_ck0000932782_LongTermContractualLiabilitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_RestatementDomain_019b46bd-0684-77a6-bde8-ffdabede7909_terseLabel_en-US" xlink:label="lab_srt_RestatementDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restatement [Domain]</link:label>
    <link:label id="lab_srt_RestatementDomain_label_en-US" xlink:label="lab_srt_RestatementDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revision of Prior Period [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_RestatementDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RestatementDomain" xlink:to="lab_srt_RestatementDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillDomain_019b46bd-053c-7edd-a9a8-337e6976d539_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of intangible assets other than goodwill [domain]</link:label>
    <link:label id="lab_ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillDomain_label_en-US" xlink:label="lab_ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of intangible assets other than goodwill [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfIntangibleAssetsOtherThanGoodwillDomain"/>
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    <link:label id="lab_ck0000932782_UnrecognisedDeferredTaxAsset_label_en-US" xlink:label="lab_ck0000932782_UnrecognisedDeferredTaxAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrecognised deferred tax asset</link:label>
    <link:label id="lab_ck0000932782_UnrecognisedDeferredTaxAsset_documentation_en-US" xlink:label="lab_ck0000932782_UnrecognisedDeferredTaxAsset" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Unrecognised deferred tax asset.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_UnrecognisedDeferredTaxAsset" xlink:href="ck0000932782-20251231.xsd#ck0000932782_UnrecognisedDeferredTaxAsset"/>
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    <link:label id="lab_ck0000932782_DeferredTaxLiabilities1Abstract_label_en-US" xlink:label="lab_ck0000932782_DeferredTaxLiabilities1Abstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Tax Liabilities 1 [abstract]</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxLiabilities1Abstract_documentation_en-US" xlink:label="lab_ck0000932782_DeferredTaxLiabilities1Abstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred tax liabilities 1.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DeferredTaxLiabilities1Abstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DeferredTaxLiabilities1Abstract"/>
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    <link:label id="lab_ck0000932782_DisclosureOfProvisionForPluggingOfWellsLineItems_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfProvisionForPluggingOfWellsLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Provision For Plugging Of Wells [line item]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfProvisionForPluggingOfWellsLineItems" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfProvisionForPluggingOfWellsLineItems"/>
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    <link:label id="lab_ck0000932782_LongTermContractualLiabilitiesOfRedocumentationsFairValuesExplanatoryTableTextBlock_label_en-US" xlink:label="lab_ck0000932782_LongTermContractualLiabilitiesOfRedocumentationsFairValuesExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-Term Contractual Liabilities Of Redocumentations Fair Values Explanatory [Table Text Block]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LongTermContractualLiabilitiesOfRedocumentationsFairValuesExplanatoryTableTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LongTermContractualLiabilitiesOfRedocumentationsFairValuesExplanatoryTableTextBlock"/>
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    <link:label id="lab_ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis_019b46bd-053d-7537-a101-4169e66c3e7b_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of intangible assets and goodwill [axis]</link:label>
    <link:label id="lab_ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis_label_en-US" xlink:label="lab_ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of intangible assets and goodwill [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfIntangibleAssetsAndGoodwillAxis"/>
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    <link:label id="lab_ck0000932782_CrudeOilAndFuelProductionMember_label_en-US" xlink:label="lab_ck0000932782_CrudeOilAndFuelProductionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Crude Oil And Fuel Production [Member]</link:label>
    <link:label id="lab_ck0000932782_CrudeOilAndFuelProductionMember_documentation_en-US" xlink:label="lab_ck0000932782_CrudeOilAndFuelProductionMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Crude Oil And Fuel Production</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CrudeOilAndFuelProductionMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CrudeOilAndFuelProductionMember"/>
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    <link:label id="lab_ck0000932782_A1st.GroupMember_019d60c6-91ee-76ba-acab-4f02702a626d_terseLabel_en-US" xlink:label="lab_ck0000932782_A1st.GroupMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">1st. Group</link:label>
    <link:label id="lab_ck0000932782_A1st.GroupMember_label_en-US" xlink:label="lab_ck0000932782_A1st.GroupMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">1st. Group [Member]</link:label>
    <link:label id="lab_ck0000932782_A1st.GroupMember_documentation_en-US" xlink:label="lab_ck0000932782_A1st.GroupMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">1st. Group</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_A1st.GroupMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_A1st.GroupMember"/>
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    <link:label id="lab_ck0000932782_MaturityPeriodFourMember_label_en-US" xlink:label="lab_ck0000932782_MaturityPeriodFourMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maturity Period Four [member]</link:label>
    <link:label id="lab_ck0000932782_MaturityPeriodFourMember_documentation_en-US" xlink:label="lab_ck0000932782_MaturityPeriodFourMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Maturity period four.</link:label>
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    <link:label id="lab_ck0000932782_CurrencyOptionsContractMember_label_en-US" xlink:label="lab_ck0000932782_CurrencyOptionsContractMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Currency Options Contract [member]</link:label>
    <link:label id="lab_ck0000932782_CurrencyOptionsContractMember_documentation_en-US" xlink:label="lab_ck0000932782_CurrencyOptionsContractMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Currency options contract.</link:label>
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    <link:label id="lab_ck0000932782_CadereytaRefineryMember_documentation_en-US" xlink:label="lab_ck0000932782_CadereytaRefineryMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cadereyta Refinery.</link:label>
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    <link:label id="lab_ck0000932782_ForeignExchangeEffectsOnRightOfUseAsset_label_en-US" xlink:label="lab_ck0000932782_ForeignExchangeEffectsOnRightOfUseAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Exchange Effects On Right Of Use Asset</link:label>
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    <link:label id="lab_ck0000932782_CanadaCentralAndSouthAmericaMember_documentation_en-US" xlink:label="lab_ck0000932782_CanadaCentralAndSouthAmericaMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Canada, Central and South America.</link:label>
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    <link:label id="lab_ck0000932782_PensionsAndRetirementPlansMember_documentation_en-US" xlink:label="lab_ck0000932782_PensionsAndRetirementPlansMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Pensions and retirement plans.</link:label>
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    <link:label id="lab_ck0000932782_TaxEffectOfUnrecognizedDeferredTaxChange_documentation_en-US" xlink:label="lab_ck0000932782_TaxEffectOfUnrecognizedDeferredTaxChange" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tax Effect Of Unrecognized Deferred Tax Change</link:label>
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    <link:label id="lab_ck0000932782_MexicanBondsMember_label_en-US" xlink:label="lab_ck0000932782_MexicanBondsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mexican Bonds [Member]</link:label>
    <link:label id="lab_ck0000932782_MexicanBondsMember_documentation_en-US" xlink:label="lab_ck0000932782_MexicanBondsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Mexican Bonds [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MexicanBondsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MexicanBondsMember"/>
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    <link:label id="lab_ck0000932782_PretaxDiscountRate_label_en-US" xlink:label="lab_ck0000932782_PretaxDiscountRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">PreTax Discount Rate</link:label>
    <link:label id="lab_ck0000932782_PretaxDiscountRate_documentation_en-US" xlink:label="lab_ck0000932782_PretaxDiscountRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">PreTax Discount Rate.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PretaxDiscountRate" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PretaxDiscountRate"/>
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    <link:label id="lab_ck0000932782_DisclosureOfChangesInConsolidatedDebtTable_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfChangesInConsolidatedDebtTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Changes In Consolidated Debt [table]</link:label>
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    <link:label id="lab_ck0000932782_FifteenSeriesOfDevelopmentBondsMember_019b46bd-05e4-7a04-8006-00a5941b2605_terseLabel_en-US" xlink:label="lab_ck0000932782_FifteenSeriesOfDevelopmentBondsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fifteen Series of Development Bonds</link:label>
    <link:label id="lab_ck0000932782_FifteenSeriesOfDevelopmentBondsMember_label_en-US" xlink:label="lab_ck0000932782_FifteenSeriesOfDevelopmentBondsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fifteen Series of Development Bonds [Member]</link:label>
    <link:label id="lab_ck0000932782_FifteenSeriesOfDevelopmentBondsMember_documentation_en-US" xlink:label="lab_ck0000932782_FifteenSeriesOfDevelopmentBondsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fifteen Series of Development Bonds</link:label>
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    <link:label id="lab_ck0000932782_DisclosureOfFinancialLiabilitiesInterestAndPrincipalCashFlowMaturitiesTable_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfFinancialLiabilitiesInterestAndPrincipalCashFlowMaturitiesTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Financial Liabilities Interest And Principal Cash Flow Maturities.</link:label>
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    <link:label id="lab_ifrs-full_LaterThanThreeMonthsMember_label_en-US" xlink:label="lab_ifrs-full_LaterThanThreeMonthsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Later than three months [member]</link:label>
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    <link:label id="lab_ck0000932782_RemainingEstimatedReservesPercentage_documentation_en-US" xlink:label="lab_ck0000932782_RemainingEstimatedReservesPercentage" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Remaining estimated reserves percentage.</link:label>
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    <link:label id="lab_ck0000932782_TransferOfServices_documentation_en-US" xlink:label="lab_ck0000932782_TransferOfServices" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Transfer Of Services</link:label>
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    <link:label id="lab_ck0000932782_DevelopedAndUndevelopedReserveAddedToOffset_documentation_en-US" xlink:label="lab_ck0000932782_DevelopedAndUndevelopedReserveAddedToOffset" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Developed and undeveloped reserve added to offset.</link:label>
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    <link:label id="lab_ck0000932782_OneHundredEightyTwoDaysTIIEMember_documentation_en-US" xlink:label="lab_ck0000932782_OneHundredEightyTwoDaysTIIEMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">One Hundred Eighty Two Days TIIE</link:label>
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    <link:label id="lab_ck0000932782_TwentyEightyDaysTIIEPlus350BasisPoints1Member_documentation_en-US" xlink:label="lab_ck0000932782_TwentyEightyDaysTIIEPlus350BasisPoints1Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Twenty Eighty Days TIIE Plus 350 Basis Points 1</link:label>
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    <link:label id="lab_ifrs-full_LoansAndAdvances_label_en-US" xlink:label="lab_ifrs-full_LoansAndAdvances" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loans and advances</link:label>
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    <link:label id="lab_ck0000932782_LongTermContractualLiabilitiesPercentage_documentation_en-US" xlink:label="lab_ck0000932782_LongTermContractualLiabilitiesPercentage" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Long-Term Contractual Liabilities Percentage</link:label>
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    <link:label id="lab_ck0000932782_DeferredIncomeTaxLiabilityAbstract_documentation_en-US" xlink:label="lab_ck0000932782_DeferredIncomeTaxLiabilityAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred income tax liability.</link:label>
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    <link:label id="lab_ck0000932782_DEUTSCHEErdoelMexicoSdeRLdeCVMember_documentation_en-US" xlink:label="lab_ck0000932782_DEUTSCHEErdoelMexicoSdeRLdeCVMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">DEUTSCHE Erdoel Mxico S. de R.L. de C.V.</link:label>
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    <link:label id="lab_ck0000932782_DepreciationDepletionAndAmortization1_documentation_en-US" xlink:label="lab_ck0000932782_DepreciationDepletionAndAmortization1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Depreciation, depletion and amortization.</link:label>
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    <link:label id="lab_ck0000932782_OneHundredEightyTwoDaysTIIEPlus500BasisPointsMember_documentation_en-US" xlink:label="lab_ck0000932782_OneHundredEightyTwoDaysTIIEPlus500BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">One Hundred Eighty Days TIIE Plus 160 Basis Points</link:label>
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    <link:label id="lab_ck0000932782_NetIncomeLossDuringThePeriod_documentation_en-US" xlink:label="lab_ck0000932782_NetIncomeLossDuringThePeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net income (loss) during the period.</link:label>
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    <link:label id="lab_ck0000932782_SixPointFourNineZeroPercentNotesDueTwoThousandTwentySevenMember_label_en-US" xlink:label="lab_ck0000932782_SixPointFourNineZeroPercentNotesDueTwoThousandTwentySevenMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Six Point Four Nine Zero Percent Notes Due Two Thousand Twenty Seven [Member]</link:label>
    <link:label id="lab_ck0000932782_SixPointFourNineZeroPercentNotesDueTwoThousandTwentySevenMember_documentation_en-US" xlink:label="lab_ck0000932782_SixPointFourNineZeroPercentNotesDueTwoThousandTwentySevenMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Six Point Four Nine Zero Percent Notes Due Two Thousand Twenty Seven [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SixPointFourNineZeroPercentNotesDueTwoThousandTwentySevenMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SixPointFourNineZeroPercentNotesDueTwoThousandTwentySevenMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SixPointFourNineZeroPercentNotesDueTwoThousandTwentySevenMember" xlink:to="lab_ck0000932782_SixPointFourNineZeroPercentNotesDueTwoThousandTwentySevenMember" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_NinePointFiveZeroPercentGlobalGuaranteedBondsDueTwoThousandTwentySevenMember_label_en-US" xlink:label="lab_ck0000932782_NinePointFiveZeroPercentGlobalGuaranteedBondsDueTwoThousandTwentySevenMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nine Point Five Zero Percent Global Guaranteed Bonds Due Two Thousand Twenty Seven [member]</link:label>
    <link:label id="lab_ck0000932782_NinePointFiveZeroPercentGlobalGuaranteedBondsDueTwoThousandTwentySevenMember_documentation_en-US" xlink:label="lab_ck0000932782_NinePointFiveZeroPercentGlobalGuaranteedBondsDueTwoThousandTwentySevenMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Nine point five zero percent global guaranteed bonds due two thousand twenty seven.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NinePointFiveZeroPercentGlobalGuaranteedBondsDueTwoThousandTwentySevenMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NinePointFiveZeroPercentGlobalGuaranteedBondsDueTwoThousandTwentySevenMember"/>
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    <link:label id="lab_ck0000932782_DebtInstrument1Domain_label_en-US" xlink:label="lab_ck0000932782_DebtInstrument1Domain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument 1 [Domain]</link:label>
    <link:label id="lab_ck0000932782_DebtInstrument1Domain_documentation_en-US" xlink:label="lab_ck0000932782_DebtInstrument1Domain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument 1 [Domain]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DebtInstrument1Domain" xlink:to="lab_ck0000932782_DebtInstrument1Domain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment_019b46bd-05e4-7694-85ed-84846818544b_terseLabel_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Translation effect</link:label>
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    <link:label id="lab_ck0000932782_ActurialAssumptionOfWageRatesIncreaseDecreaseOfOnePercentageMember_label_en-US" xlink:label="lab_ck0000932782_ActurialAssumptionOfWageRatesIncreaseDecreaseOfOnePercentageMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acturial Assumption Of Wage Rates Increase Decrease Of One Percentage [member]</link:label>
    <link:label id="lab_ck0000932782_ActurialAssumptionOfWageRatesIncreaseDecreaseOfOnePercentageMember_documentation_en-US" xlink:label="lab_ck0000932782_ActurialAssumptionOfWageRatesIncreaseDecreaseOfOnePercentageMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Actuarial assumption of wage rates increase decrease of one percentage.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ActurialAssumptionOfWageRatesIncreaseDecreaseOfOnePercentageMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ActurialAssumptionOfWageRatesIncreaseDecreaseOfOnePercentageMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ActurialAssumptionOfWageRatesIncreaseDecreaseOfOnePercentageMember" xlink:to="lab_ck0000932782_ActurialAssumptionOfWageRatesIncreaseDecreaseOfOnePercentageMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis_019b46bd-0684-7f62-9173-eb03491a16ea_terseLabel_en-US" xlink:label="lab_ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Retrospective application and retrospective restatement [axis]</link:label>
    <link:label id="lab_ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis_label_en-US" xlink:label="lab_ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retrospective application and retrospective restatement [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:to="lab_ifrs-full_RetrospectiveApplicationAndRetrospectiveRestatementAxis" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_DescriptionOfAccountingPolicyForWellsPipelinesPropertiesPlantAndEquipmentExplanatory_label_en-US" xlink:label="lab_ck0000932782_DescriptionOfAccountingPolicyForWellsPipelinesPropertiesPlantAndEquipmentExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Description Of Accounting Policy For Wells Pipelines Properties Plant And Equipment [text block]</link:label>
    <link:label id="lab_ck0000932782_DescriptionOfAccountingPolicyForWellsPipelinesPropertiesPlantAndEquipmentExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DescriptionOfAccountingPolicyForWellsPipelinesPropertiesPlantAndEquipmentExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Description of accounting policy for wells pipelines properties plant and equipment.</link:label>
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    <link:label id="lab_ck0000932782_ContractualLiabilityGroupDomain_label_en-US" xlink:label="lab_ck0000932782_ContractualLiabilityGroupDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contractual Liability Group [Domain]</link:label>
    <link:label id="lab_ck0000932782_ContractualLiabilityGroupDomain_documentation_en-US" xlink:label="lab_ck0000932782_ContractualLiabilityGroupDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Redocumentations Group [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ContractualLiabilityGroupDomain" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ContractualLiabilityGroupDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ContractualLiabilityGroupDomain" xlink:to="lab_ck0000932782_ContractualLiabilityGroupDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EmployeeBenefitsExpenseExpectedPaymentLongTerm_019b46bd-05e4-7203-97ad-9e473dd4e2c7_terseLabel_en-US" xlink:label="lab_ck0000932782_EmployeeBenefitsExpenseExpectedPaymentLongTerm" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long term expected benefit payments</link:label>
    <link:label id="lab_ck0000932782_EmployeeBenefitsExpenseExpectedPaymentLongTerm_label_en-US" xlink:label="lab_ck0000932782_EmployeeBenefitsExpenseExpectedPaymentLongTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Benefits Expense Expected Payment, Long Term</link:label>
    <link:label id="lab_ck0000932782_EmployeeBenefitsExpenseExpectedPaymentLongTerm_documentation_en-US" xlink:label="lab_ck0000932782_EmployeeBenefitsExpenseExpectedPaymentLongTerm" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Employee Benefits Expense Expected Payment, Long Term</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EmployeeBenefitsExpenseExpectedPaymentLongTerm" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EmployeeBenefitsExpenseExpectedPaymentLongTerm"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EmployeeBenefitsExpenseExpectedPaymentLongTerm" xlink:to="lab_ck0000932782_EmployeeBenefitsExpenseExpectedPaymentLongTerm" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LiquidityRiskMitigationAmountThroughSyndicatedCreditLines_019b46bd-0684-7703-882c-603d3881e280_terseLabel_en-US" xlink:label="lab_ck0000932782_LiquidityRiskMitigationAmountThroughSyndicatedCreditLines" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liquidity risk mitigation amount through syndicated credit lines</link:label>
    <link:label id="lab_ck0000932782_LiquidityRiskMitigationAmountThroughSyndicatedCreditLines_label_en-US" xlink:label="lab_ck0000932782_LiquidityRiskMitigationAmountThroughSyndicatedCreditLines" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liquidity Risk Mitigation Amount Through Syndicated Credit Lines</link:label>
    <link:label id="lab_ck0000932782_LiquidityRiskMitigationAmountThroughSyndicatedCreditLines_documentation_en-US" xlink:label="lab_ck0000932782_LiquidityRiskMitigationAmountThroughSyndicatedCreditLines" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Liquidity Risk Mitigation Amount Through Syndicated Credit Lines</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LiquidityRiskMitigationAmountThroughSyndicatedCreditLines" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LiquidityRiskMitigationAmountThroughSyndicatedCreditLines"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LiquidityRiskMitigationAmountThroughSyndicatedCreditLines" xlink:to="lab_ck0000932782_LiquidityRiskMitigationAmountThroughSyndicatedCreditLines" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TradeAndOtherCurrentReceivablesDueFromRelatedParties_019b46bd-053c-7bf4-8bc3-e6f68f3c1e4a_terseLabel_en-US" xlink:label="lab_ifrs-full_TradeAndOtherCurrentReceivablesDueFromRelatedParties" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Officials and employees</link:label>
    <link:label id="lab_ifrs-full_TradeAndOtherCurrentReceivablesDueFromRelatedParties_label_en-US" xlink:label="lab_ifrs-full_TradeAndOtherCurrentReceivablesDueFromRelatedParties" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current receivables due from related parties</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherCurrentReceivablesDueFromRelatedParties" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TradeAndOtherCurrentReceivablesDueFromRelatedParties"/>
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    <link:label id="lab_ck0000932782_DeferredTaxLiabilitiesPropertyPlantAndEquipment1_019b46bd-05e4-7aeb-8fab-e6c97404a91b_negatedLabel_en-US" xlink:label="lab_ck0000932782_DeferredTaxLiabilitiesPropertyPlantAndEquipment1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Wells, pipelines, properties, plant and equipment</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxLiabilitiesPropertyPlantAndEquipment1_label_en-US" xlink:label="lab_ck0000932782_DeferredTaxLiabilitiesPropertyPlantAndEquipment1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Tax Liabilities Property Plant And Equipment1</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxLiabilitiesPropertyPlantAndEquipment1_documentation_en-US" xlink:label="lab_ck0000932782_DeferredTaxLiabilitiesPropertyPlantAndEquipment1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred tax liabilities property plant and equipment.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DeferredTaxLiabilitiesPropertyPlantAndEquipment1" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DeferredTaxLiabilitiesPropertyPlantAndEquipment1"/>
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    <link:label id="lab_ifrs-full_FinancialLiabilitiesAtFairValue_label_en-US" xlink:label="lab_ifrs-full_FinancialLiabilitiesAtFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial liabilities, at fair value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialLiabilitiesAtFairValue" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilitiesAtFairValue"/>
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    <link:label id="lab_ck0000932782_TaxEffectOfTaxLossesByLegalResolution_documentation_en-US" xlink:label="lab_ck0000932782_TaxEffectOfTaxLossesByLegalResolution" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tax Effect Of Tax Losses By Legal Resolution</link:label>
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    <link:label id="lab_ck0000932782_ShorttermDebtAndCurrentPortionOfLongtermDebt_label_en-US" xlink:label="lab_ck0000932782_ShorttermDebtAndCurrentPortionOfLongtermDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term debt and current portion of long-term debt</link:label>
    <link:label id="lab_ck0000932782_ShorttermDebtAndCurrentPortionOfLongtermDebt_documentation_en-US" xlink:label="lab_ck0000932782_ShorttermDebtAndCurrentPortionOfLongtermDebt" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Short-term debt and current portion of long-term debt.</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ShorttermDebtAndCurrentPortionOfLongtermDebt" xlink:to="lab_ck0000932782_ShorttermDebtAndCurrentPortionOfLongtermDebt" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EkOrBalamMember_019b46bd-0684-7bf3-b01c-d5368f679a0f_terseLabel_en-US" xlink:label="lab_ck0000932782_EkOrBalamMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">EK-Balam</link:label>
    <link:label id="lab_ck0000932782_EkOrBalamMember_label_en-US" xlink:label="lab_ck0000932782_EkOrBalamMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">EK or balam [member]</link:label>
    <link:label id="lab_ck0000932782_EkOrBalamMember_documentation_en-US" xlink:label="lab_ck0000932782_EkOrBalamMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">EK or balam [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EkOrBalamMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EkOrBalamMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EkOrBalamMember" xlink:to="lab_ck0000932782_EkOrBalamMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseNondeductibleExpenses_019b46bd-05e4-7f3e-ba2f-4376902afc3a_terseLabel_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseNondeductibleExpenses" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-deductible expenses</link:label>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseNondeductibleExpenses_label_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseNondeductibleExpenses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit-sharing duty expense nondeductible expenses</link:label>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseNondeductibleExpenses_documentation_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseNondeductibleExpenses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Profit-sharing duty expense nondeductible expenses.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProfitsharingDutyExpenseNondeductibleExpenses" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProfitsharingDutyExpenseNondeductibleExpenses"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProfitsharingDutyExpenseNondeductibleExpenses" xlink:to="lab_ck0000932782_ProfitsharingDutyExpenseNondeductibleExpenses" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ExplorationAndProductionSegmentMember_019b46bd-05e4-78b2-b223-7a6fdd01e8d5_terseLabel_en-US" xlink:label="lab_ck0000932782_ExplorationAndProductionSegmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exploration and Production</link:label>
    <link:label id="lab_ck0000932782_ExplorationAndProductionSegmentMember_label_en-US" xlink:label="lab_ck0000932782_ExplorationAndProductionSegmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exploration and production segment [member]</link:label>
    <link:label id="lab_ck0000932782_ExplorationAndProductionSegmentMember_documentation_en-US" xlink:label="lab_ck0000932782_ExplorationAndProductionSegmentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Exploration and production segment.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ExplorationAndProductionSegmentMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ExplorationAndProductionSegmentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ExplorationAndProductionSegmentMember" xlink:to="lab_ck0000932782_ExplorationAndProductionSegmentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TopOfRangeMember_019b46bd-0715-7d91-8c9a-fd5156972ae2_terseLabel_en-US" xlink:label="lab_ifrs-full_TopOfRangeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Top of range</link:label>
    <link:label id="lab_ifrs-full_TopOfRangeMember_label_en-US" xlink:label="lab_ifrs-full_TopOfRangeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Top of range [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TopOfRangeMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TopOfRangeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TopOfRangeMember" xlink:to="lab_ifrs-full_TopOfRangeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherNoncurrentAssets_019b46bd-053c-774f-b5b6-b7d9d3d93bc0_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherNoncurrentAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other assets</link:label>
    <link:label id="lab_ifrs-full_OtherNoncurrentAssets_019b46bd-053c-7d33-b687-fc59b7d7e976_totalLabel_en-US" xlink:label="lab_ifrs-full_OtherNoncurrentAssets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other assets</link:label>
    <link:label id="lab_ifrs-full_OtherNoncurrentAssets_label_en-US" xlink:label="lab_ifrs-full_OtherNoncurrentAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other non-current assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherNoncurrentAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherNoncurrentAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherNoncurrentAssets" xlink:to="lab_ifrs-full_OtherNoncurrentAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TradeAndOtherReceivablesLineItems_019b46bd-0715-7c2b-98bd-9958b50da7c9_terseLabel_en-US" xlink:label="lab_ck0000932782_TradeAndOtherReceivablesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trade and Other Receivables [Line Items]</link:label>
    <link:label id="lab_ck0000932782_TradeAndOtherReceivablesLineItems_label_en-US" xlink:label="lab_ck0000932782_TradeAndOtherReceivablesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trade and Other Receivables [line items]</link:label>
    <link:label id="lab_ck0000932782_TradeAndOtherReceivablesLineItems_documentation_en-US" xlink:label="lab_ck0000932782_TradeAndOtherReceivablesLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Trade and other receivables.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TradeAndOtherReceivablesLineItems" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TradeAndOtherReceivablesLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TradeAndOtherReceivablesLineItems" xlink:to="lab_ck0000932782_TradeAndOtherReceivablesLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProvedUndevelopedReserves_019b46bd-0684-728a-906a-cf590fe52873_terseLabel_en-US" xlink:label="lab_ck0000932782_ProvedUndevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proved undeveloped reserves</link:label>
    <link:label id="lab_ck0000932782_ProvedUndevelopedReserves_019b46bd-0684-745b-926b-ab4e559f1ee7_verboseLabel_en-US" xlink:label="lab_ck0000932782_ProvedUndevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Proved undeveloped reserves at December 31,</link:label>
    <link:label id="lab_ck0000932782_ProvedUndevelopedReserves_label_en-US" xlink:label="lab_ck0000932782_ProvedUndevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proved undeveloped reserves</link:label>
    <link:label id="lab_ck0000932782_ProvedUndevelopedReserves_documentation_en-US" xlink:label="lab_ck0000932782_ProvedUndevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Proved undeveloped reserves.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProvedUndevelopedReserves" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProvedUndevelopedReserves"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProvedUndevelopedReserves" xlink:to="lab_ck0000932782_ProvedUndevelopedReserves" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ReserveReplacementRatio_019b46bd-045f-79ea-97a1-d5ed0fd7c4db_terseLabel_en-US" xlink:label="lab_ck0000932782_ReserveReplacementRatio" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reserve-replacement ratio</link:label>
    <link:label id="lab_ck0000932782_ReserveReplacementRatio_label_en-US" xlink:label="lab_ck0000932782_ReserveReplacementRatio" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reserve Replacement Ratio</link:label>
    <link:label id="lab_ck0000932782_ReserveReplacementRatio_documentation_en-US" xlink:label="lab_ck0000932782_ReserveReplacementRatio" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Reserve Replacement Ratio</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ReserveReplacementRatio" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ReserveReplacementRatio"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ReserveReplacementRatio" xlink:to="lab_ck0000932782_ReserveReplacementRatio" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2026Member_019d3da3-be3e-7ec9-91f5-bbdfd0873e1d_terseLabel_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2026Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position One, January 2026</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2026Member_label_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2026Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position One, January 2026 [Member]</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2026Member_documentation_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2026Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position One, January 2026</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2026Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StrengtheningOfFinancialPositionOneJanuary2026Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2026Member" xlink:to="lab_ck0000932782_StrengtheningOfFinancialPositionOneJanuary2026Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashAndCashEquivalentsAmountContributedToFairValueOfPlanAssets_019b46bd-0684-706a-8d58-75c42d71bf1b_terseLabel_en-US" xlink:label="lab_ifrs-full_CashAndCashEquivalentsAmountContributedToFairValueOfPlanAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:label id="lab_ifrs-full_CashAndCashEquivalentsAmountContributedToFairValueOfPlanAssets_label_en-US" xlink:label="lab_ifrs-full_CashAndCashEquivalentsAmountContributedToFairValueOfPlanAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents, amount contributed to fair value of plan assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashAndCashEquivalentsAmountContributedToFairValueOfPlanAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashAndCashEquivalentsAmountContributedToFairValueOfPlanAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashAndCashEquivalentsAmountContributedToFairValueOfPlanAssets" xlink:to="lab_ifrs-full_CashAndCashEquivalentsAmountContributedToFairValueOfPlanAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AccountingEstimatesAxis_019b46bd-05e4-7e9c-8c44-48fc3cd5d865_terseLabel_en-US" xlink:label="lab_ifrs-full_AccountingEstimatesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounting estimates [axis]</link:label>
    <link:label id="lab_ifrs-full_AccountingEstimatesAxis_label_en-US" xlink:label="lab_ifrs-full_AccountingEstimatesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounting estimates [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AccountingEstimatesAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AccountingEstimatesAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AccountingEstimatesAxis" xlink:to="lab_ifrs-full_AccountingEstimatesAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_019b46bd-0684-72bb-b838-2266512aebc5_terseLabel_en-US" xlink:label="lab_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]</link:label>
    <link:label id="lab_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis_label_en-US" xlink:label="lab_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Carrying amount, accumulated depreciation, amortisation and impairment and gross carrying amount [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:to="lab_ifrs-full_CarryingAmountAccumulatedDepreciationAmortisationAndImpairmentAndGrossCarryingAmountAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CrudeOilOptionsPositionOneMember_019b46bd-045f-7b1b-883c-d80ac952b1e5_terseLabel_en-US" xlink:label="lab_ck0000932782_CrudeOilOptionsPositionOneMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Crude oil Options</link:label>
    <link:label id="lab_ck0000932782_CrudeOilOptionsPositionOneMember_label_en-US" xlink:label="lab_ck0000932782_CrudeOilOptionsPositionOneMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Crude Oil Options Position One [Member]</link:label>
    <link:label id="lab_ck0000932782_CrudeOilOptionsPositionOneMember_documentation_en-US" xlink:label="lab_ck0000932782_CrudeOilOptionsPositionOneMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Crude oil options position one.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CrudeOilOptionsPositionOneMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CrudeOilOptionsPositionOneMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CrudeOilOptionsPositionOneMember" xlink:to="lab_ck0000932782_CrudeOilOptionsPositionOneMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NotesAndOtherExplanatoryInformationAbstract_label_en-US" xlink:label="lab_ifrs-full_NotesAndOtherExplanatoryInformationAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notes and other explanatory information [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NotesAndOtherExplanatoryInformationAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NotesAndOtherExplanatoryInformationAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NotesAndOtherExplanatoryInformationAbstract" xlink:to="lab_ifrs-full_NotesAndOtherExplanatoryInformationAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_GovernmentDebtInstrumentsHeld_019b46bd-05e4-7e33-afa0-4684ba80fa8f_verboseLabel_en-US" xlink:label="lab_ifrs-full_GovernmentDebtInstrumentsHeld" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Mexican Government Bonds</link:label>
    <link:label id="lab_ifrs-full_GovernmentDebtInstrumentsHeld_019b46bd-05e4-77be-838e-e4a349e581c9_terseLabel_en-US" xlink:label="lab_ifrs-full_GovernmentDebtInstrumentsHeld" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Government bonds</link:label>
    <link:label id="lab_ifrs-full_GovernmentDebtInstrumentsHeld_label_en-US" xlink:label="lab_ifrs-full_GovernmentDebtInstrumentsHeld" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Government debt instruments held</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GovernmentDebtInstrumentsHeld" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GovernmentDebtInstrumentsHeld"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_GovernmentDebtInstrumentsHeld" xlink:to="lab_ifrs-full_GovernmentDebtInstrumentsHeld" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss_019b46bd-053c-72c0-b238-ef0c00b2dc81_terseLabel_en-US" xlink:label="lab_ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">(Impairment) of wells, pipelines, properties, plant and equipment</link:label>
    <link:label id="lab_ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss_label_en-US" xlink:label="lab_ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impairment loss (reversal of impairment loss) recognised in profit or loss</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:to="lab_ifrs-full_ImpairmentLossReversalOfImpairmentLossRecognisedInProfitOrLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrencyRiskMember_019b46bd-053d-75bb-b2c7-d179e3451711_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrencyRiskMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Currency risk</link:label>
    <link:label id="lab_ifrs-full_CurrencyRiskMember_label_en-US" xlink:label="lab_ifrs-full_CurrencyRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Currency risk [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrencyRiskMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrencyRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrencyRiskMember" xlink:to="lab_ifrs-full_CurrencyRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember_019b46bd-053d-7322-992b-895949bbc045_terseLabel_en-US" xlink:label="lab_ifrs-full_LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">61 to 90 days</link:label>
    <link:label id="lab_ifrs-full_LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember_label_en-US" xlink:label="lab_ifrs-full_LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Later than two months and not later than three months [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember" xlink:to="lab_ifrs-full_LaterThanTwoMonthsAndNotLaterThanThreeMonthsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RevenueFromContractsWithCustomers_019b46bd-0684-785b-88a6-b74853d5158e_terseLabel_en-US" xlink:label="lab_ifrs-full_RevenueFromContractsWithCustomers" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ifrs-full_RevenueFromContractsWithCustomers_label_en-US" xlink:label="lab_ifrs-full_RevenueFromContractsWithCustomers" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue from contracts with customers</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RevenueFromContractsWithCustomers" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevenueFromContractsWithCustomers"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RevenueFromContractsWithCustomers" xlink:to="lab_ifrs-full_RevenueFromContractsWithCustomers" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SeriesOfDevelopmentBondsAxis_019b46bd-05e4-74c4-bb65-810d2a6903a9_terseLabel_en-US" xlink:label="lab_ck0000932782_SeriesOfDevelopmentBondsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Series Of Development Bonds [Axis]</link:label>
    <link:label id="lab_ck0000932782_SeriesOfDevelopmentBondsAxis_label_en-US" xlink:label="lab_ck0000932782_SeriesOfDevelopmentBondsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Series Of Development Bonds [Axis]</link:label>
    <link:label id="lab_ck0000932782_SeriesOfDevelopmentBondsAxis_documentation_en-US" xlink:label="lab_ck0000932782_SeriesOfDevelopmentBondsAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Series Of Development Bonds [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SeriesOfDevelopmentBondsAxis" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SeriesOfDevelopmentBondsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SeriesOfDevelopmentBondsAxis" xlink:to="lab_ck0000932782_SeriesOfDevelopmentBondsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CreditLineMember_019b46bd-05e4-795b-9a28-3bc057ba35ff_terseLabel_en-US" xlink:label="lab_ck0000932782_CreditLineMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Line</link:label>
    <link:label id="lab_ck0000932782_CreditLineMember_label_en-US" xlink:label="lab_ck0000932782_CreditLineMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Line [Member]</link:label>
    <link:label id="lab_ck0000932782_CreditLineMember_documentation_en-US" xlink:label="lab_ck0000932782_CreditLineMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Credit Line.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CreditLineMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CreditLineMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CreditLineMember" xlink:to="lab_ck0000932782_CreditLineMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherComprehensiveIncome_019b46bd-045f-74f6-afeb-3b562f22a5f4_totalLabel_en-US" xlink:label="lab_ifrs-full_OtherComprehensiveIncome" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other comprehensive results</link:label>
    <link:label id="lab_ifrs-full_OtherComprehensiveIncome_019b46bd-045f-745d-bc44-e24e2c2f0fcc_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherComprehensiveIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total other comprehensive results</link:label>
    <link:label id="lab_ifrs-full_OtherComprehensiveIncome_label_en-US" xlink:label="lab_ifrs-full_OtherComprehensiveIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other comprehensive income</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncome"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherComprehensiveIncome" xlink:to="lab_ifrs-full_OtherComprehensiveIncome" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_VariableRateEurosMember_019b46bd-053c-7b37-8211-6e43ee1078f6_terseLabel_en-US" xlink:label="lab_ck0000932782_VariableRateEurosMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Variable rate (euros)</link:label>
    <link:label id="lab_ck0000932782_VariableRateEurosMember_label_en-US" xlink:label="lab_ck0000932782_VariableRateEurosMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable rate (euros) [member]</link:label>
    <link:label id="lab_ck0000932782_VariableRateEurosMember_documentation_en-US" xlink:label="lab_ck0000932782_VariableRateEurosMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Variable rate (euros).</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_VariableRateEurosMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_VariableRateEurosMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_VariableRateEurosMember" xlink:to="lab_ck0000932782_VariableRateEurosMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CounterpartiesDomain_019b46bd-0684-72b8-bca4-94661e853cc0_terseLabel_en-US" xlink:label="lab_ifrs-full_CounterpartiesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Counterparties</link:label>
    <link:label id="lab_ifrs-full_CounterpartiesDomain_label_en-US" xlink:label="lab_ifrs-full_CounterpartiesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Counterparties [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CounterpartiesDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CounterpartiesDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CounterpartiesDomain" xlink:to="lab_ifrs-full_CounterpartiesDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncurrentTradeReceivables_019b46bd-053c-775d-9f2e-44f9a00cb7a4_verboseLabel_en-US" xlink:label="lab_ifrs-full_NoncurrentTradeReceivables" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Notes receivable</link:label>
    <link:label id="lab_ifrs-full_NoncurrentTradeReceivables_label_en-US" xlink:label="lab_ifrs-full_NoncurrentTradeReceivables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-current trade receivables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentTradeReceivables" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentTradeReceivables"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncurrentTradeReceivables" xlink:to="lab_ifrs-full_NoncurrentTradeReceivables" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PastDueStatusDomain_019b46bd-05e4-7bc9-9ed3-827af953814a_terseLabel_en-US" xlink:label="lab_ifrs-full_PastDueStatusDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Past due status</link:label>
    <link:label id="lab_ifrs-full_PastDueStatusDomain_label_en-US" xlink:label="lab_ifrs-full_PastDueStatusDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Past due status [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PastDueStatusDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PastDueStatusDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PastDueStatusDomain" xlink:to="lab_ifrs-full_PastDueStatusDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_019b46bd-0684-72f0-ac3b-aacd5b1236d7_terseLabel_en-US" xlink:label="lab_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Types of share-based payment arrangements [axis]</link:label>
    <link:label id="lab_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis_label_en-US" xlink:label="lab_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Types of share-based payment arrangements [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis" xlink:to="lab_ifrs-full_TypesOfSharebasedPaymentArrangementsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LongTermContractualLiabilitiesFairValue_019d60c6-91ee-71c8-a102-33cce32a130e_terseLabel_en-US" xlink:label="lab_ck0000932782_LongTermContractualLiabilitiesFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term contractual liabilities fair value</link:label>
    <link:label id="lab_ck0000932782_LongTermContractualLiabilitiesFairValue_label_en-US" xlink:label="lab_ck0000932782_LongTermContractualLiabilitiesFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-Term Contractual Liabilities Fair Value</link:label>
    <link:label id="lab_ck0000932782_LongTermContractualLiabilitiesFairValue_documentation_en-US" xlink:label="lab_ck0000932782_LongTermContractualLiabilitiesFairValue" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Long-Term Contractual Liabilities Fair Value</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LongTermContractualLiabilitiesFairValue" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LongTermContractualLiabilitiesFairValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LongTermContractualLiabilitiesFairValue" xlink:to="lab_ck0000932782_LongTermContractualLiabilitiesFairValue" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense_019b46bd-0684-776b-adc7-22bc0cf9a4cf_verboseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Depreciation and amortization of wells, pipelines, properties, plant and equipment</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense_019b46bd-0684-7c95-8ed8-a5e040570374_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation and amortization of wells, pipelines, properties, plant and equipment</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense_019b46bd-0684-75f2-964d-fe4d8f85a5b5_netLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Depreciation and amortization of wells, pipelines, properties, plant and equipment</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments for depreciation and amortisation expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense" xlink:to="lab_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TaxEffectOfExpenseRetirementBenefits_019b46bd-0684-794f-9d4c-8d6dea8a3c90_terseLabel_en-US" xlink:label="lab_ck0000932782_TaxEffectOfExpenseRetirementBenefits" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Retirement benefits</link:label>
    <link:label id="lab_ck0000932782_TaxEffectOfExpenseRetirementBenefits_label_en-US" xlink:label="lab_ck0000932782_TaxEffectOfExpenseRetirementBenefits" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tax Effect Of Expense Retirement Benefits</link:label>
    <link:label id="lab_ck0000932782_TaxEffectOfExpenseRetirementBenefits_documentation_en-US" xlink:label="lab_ck0000932782_TaxEffectOfExpenseRetirementBenefits" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tax effect of expense retirement benefits.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TaxEffectOfExpenseRetirementBenefits" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TaxEffectOfExpenseRetirementBenefits"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TaxEffectOfExpenseRetirementBenefits" xlink:to="lab_ck0000932782_TaxEffectOfExpenseRetirementBenefits" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_A6.875NotesDue2026Member_019bd5bb-4951-715a-b7b7-ed1f4c319de3_terseLabel_en-US" xlink:label="lab_ck0000932782_A6.875NotesDue2026Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">6.875% Notes Due 2026</link:label>
    <link:label id="lab_ck0000932782_A6.875NotesDue2026Member_label_en-US" xlink:label="lab_ck0000932782_A6.875NotesDue2026Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">6.875% Notes Due 2026 [Member]</link:label>
    <link:label id="lab_ck0000932782_A6.875NotesDue2026Member_documentation_en-US" xlink:label="lab_ck0000932782_A6.875NotesDue2026Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">6.875% Notes Due 2026</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_A6.875NotesDue2026Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_A6.875NotesDue2026Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_A6.875NotesDue2026Member" xlink:to="lab_ck0000932782_A6.875NotesDue2026Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TulaRefineryMember_019b46bd-053c-73f1-a1a8-cf7e6023c5fa_terseLabel_en-US" xlink:label="lab_ck0000932782_TulaRefineryMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tula Refinery</link:label>
    <link:label id="lab_ck0000932782_TulaRefineryMember_label_en-US" xlink:label="lab_ck0000932782_TulaRefineryMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tula Refinery [member]</link:label>
    <link:label id="lab_ck0000932782_TulaRefineryMember_documentation_en-US" xlink:label="lab_ck0000932782_TulaRefineryMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tula Refinery.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TulaRefineryMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TulaRefineryMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TulaRefineryMember" xlink:to="lab_ck0000932782_TulaRefineryMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PercentageOfEmployeesBenefitsProvision_019b46bd-05e4-7d75-8c36-afa1ee7d5493_terseLabel_en-US" xlink:label="lab_ck0000932782_PercentageOfEmployeesBenefitsProvision" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employee benefits provision</link:label>
    <link:label id="lab_ck0000932782_PercentageOfEmployeesBenefitsProvision_label_en-US" xlink:label="lab_ck0000932782_PercentageOfEmployeesBenefitsProvision" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage of employees benefits provision</link:label>
    <link:label id="lab_ck0000932782_PercentageOfEmployeesBenefitsProvision_documentation_en-US" xlink:label="lab_ck0000932782_PercentageOfEmployeesBenefitsProvision" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of employees benefits provision.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PercentageOfEmployeesBenefitsProvision" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PercentageOfEmployeesBenefitsProvision"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PercentageOfEmployeesBenefitsProvision" xlink:to="lab_ck0000932782_PercentageOfEmployeesBenefitsProvision" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PositiveEffectDueToLowerFreightAndDistributionCosts_019b46bd-0684-7bdb-8515-e28b92417f07_terseLabel_en-US" xlink:label="lab_ck0000932782_PositiveEffectDueToLowerFreightAndDistributionCosts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Positive effect due to lower transportation and distribution costs</link:label>
    <link:label id="lab_ck0000932782_PositiveEffectDueToLowerFreightAndDistributionCosts_label_en-US" xlink:label="lab_ck0000932782_PositiveEffectDueToLowerFreightAndDistributionCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Positive Effect Due To Lower Freight And Distribution Costs</link:label>
    <link:label id="lab_ck0000932782_PositiveEffectDueToLowerFreightAndDistributionCosts_documentation_en-US" xlink:label="lab_ck0000932782_PositiveEffectDueToLowerFreightAndDistributionCosts" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Positive Effect Due To Lower Freight And Distribution Costs</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PositiveEffectDueToLowerFreightAndDistributionCosts" xlink:to="lab_ck0000932782_PositiveEffectDueToLowerFreightAndDistributionCosts" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FreightExpense_019b46bd-05e4-7245-a4f2-12c2cd422082_terseLabel_en-US" xlink:label="lab_ck0000932782_FreightExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Freight</link:label>
    <link:label id="lab_ck0000932782_FreightExpense_label_en-US" xlink:label="lab_ck0000932782_FreightExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Freight Expense</link:label>
    <link:label id="lab_ck0000932782_FreightExpense_documentation_en-US" xlink:label="lab_ck0000932782_FreightExpense" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Freight expense.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FreightExpense" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FreightExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FreightExpense" xlink:to="lab_ck0000932782_FreightExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ChangesInPropertyPlantAndEquipmentAbstract_019b46bd-0715-7c55-9861-84895254721f_terseLabel_en-US" xlink:label="lab_ifrs-full_ChangesInPropertyPlantAndEquipmentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in property, plant and equipment [abstract]</link:label>
    <link:label id="lab_ifrs-full_ChangesInPropertyPlantAndEquipmentAbstract_label_en-US" xlink:label="lab_ifrs-full_ChangesInPropertyPlantAndEquipmentAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Changes in property, plant and equipment [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ChangesInPropertyPlantAndEquipmentAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ChangesInPropertyPlantAndEquipmentAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ChangesInPropertyPlantAndEquipmentAbstract" xlink:to="lab_ifrs-full_ChangesInPropertyPlantAndEquipmentAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CommitmentsAndContingenciesLineItems_019b46bd-05e4-7fac-8739-cba48dcc24f7_terseLabel_en-US" xlink:label="lab_ck0000932782_CommitmentsAndContingenciesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commitments and contingencies [line items]</link:label>
    <link:label id="lab_ck0000932782_CommitmentsAndContingenciesLineItems_label_en-US" xlink:label="lab_ck0000932782_CommitmentsAndContingenciesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and contingencies [line items]</link:label>
    <link:label id="lab_ck0000932782_CommitmentsAndContingenciesLineItems_documentation_en-US" xlink:label="lab_ck0000932782_CommitmentsAndContingenciesLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Commitments and contingencies.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CommitmentsAndContingenciesLineItems" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CommitmentsAndContingenciesLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CommitmentsAndContingenciesLineItems" xlink:to="lab_ck0000932782_CommitmentsAndContingenciesLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfChangesInConsolidatedDebtExplanatory_019b46bd-05e4-7837-b310-5b43c332e7e3_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfChangesInConsolidatedDebtExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Changes in Consolidated Debt</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfChangesInConsolidatedDebtExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfChangesInConsolidatedDebtExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of Changes in Consolidated Debt [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfChangesInConsolidatedDebtExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfChangesInConsolidatedDebtExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The disclosure of changes in consolidated debt.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfChangesInConsolidatedDebtExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfChangesInConsolidatedDebtExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfChangesInConsolidatedDebtExplanatory" xlink:to="lab_ck0000932782_DisclosureOfChangesInConsolidatedDebtExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProvisionOfGuaranteesOrCollateralByEntityRelatedPartyTransactions_019b46bd-0684-7c9c-9f5b-8406f4ecdbc1_terseLabel_en-US" xlink:label="lab_ifrs-full_ProvisionOfGuaranteesOrCollateralByEntityRelatedPartyTransactions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provision of guarantees or collateral to entity, related party transactions</link:label>
    <link:label id="lab_ifrs-full_ProvisionOfGuaranteesOrCollateralByEntityRelatedPartyTransactions_label_en-US" xlink:label="lab_ifrs-full_ProvisionOfGuaranteesOrCollateralByEntityRelatedPartyTransactions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provision of guarantees or collateral by entity, related party transactions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProvisionOfGuaranteesOrCollateralByEntityRelatedPartyTransactions" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProvisionOfGuaranteesOrCollateralByEntityRelatedPartyTransactions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProvisionOfGuaranteesOrCollateralByEntityRelatedPartyTransactions" xlink:to="lab_ifrs-full_ProvisionOfGuaranteesOrCollateralByEntityRelatedPartyTransactions" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfPensionIncreasesMember_019b46bd-0684-74c0-b422-8d5f1673aeea_terseLabel_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfPensionIncreasesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rate of increase in pensions</link:label>
    <link:label id="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfPensionIncreasesMember_label_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfPensionIncreasesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Actuarial assumption of expected rates of pension increases [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ActuarialAssumptionOfExpectedRatesOfPensionIncreasesMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ActuarialAssumptionOfExpectedRatesOfPensionIncreasesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ActuarialAssumptionOfExpectedRatesOfPensionIncreasesMember" xlink:to="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfPensionIncreasesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CrossCurrencySwapsPrepaidSwapsMember_019d6139-2393-7d2e-83f3-a7f85a26d3c5_terseLabel_en-US" xlink:label="lab_ck0000932782_CrossCurrencySwapsPrepaidSwapsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Petr&#243;leos Mexicanos pays U.S. dollar and Pesos and receives U.S. dollar and Pesos</link:label>
    <link:label id="lab_ck0000932782_CrossCurrencySwapsPrepaidSwapsMember_label_en-US" xlink:label="lab_ck0000932782_CrossCurrencySwapsPrepaidSwapsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cross-currency swaps (Prepaid Swaps) [Member]</link:label>
    <link:label id="lab_ck0000932782_CrossCurrencySwapsPrepaidSwapsMember_documentation_en-US" xlink:label="lab_ck0000932782_CrossCurrencySwapsPrepaidSwapsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cross-currency swaps (Prepaid Swaps)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CrossCurrencySwapsPrepaidSwapsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CrossCurrencySwapsPrepaidSwapsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CrossCurrencySwapsPrepaidSwapsMember" xlink:to="lab_ck0000932782_CrossCurrencySwapsPrepaidSwapsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MonthlyProvisionalPayments_019d0682-3360-76b9-8530-5624670552bf_terseLabel_en-US" xlink:label="lab_ck0000932782_MonthlyProvisionalPayments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Monthly provisional payments</link:label>
    <link:label id="lab_ck0000932782_MonthlyProvisionalPayments_label_en-US" xlink:label="lab_ck0000932782_MonthlyProvisionalPayments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Monthly Provisional Payments</link:label>
    <link:label id="lab_ck0000932782_MonthlyProvisionalPayments_documentation_en-US" xlink:label="lab_ck0000932782_MonthlyProvisionalPayments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Monthly Provisional Payments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MonthlyProvisionalPayments" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MonthlyProvisionalPayments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MonthlyProvisionalPayments" xlink:to="lab_ck0000932782_MonthlyProvisionalPayments" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProportionOfVotingPowerHeldInSubsidiary_019b46bd-053d-7df4-a498-71cd054b9c4a_terseLabel_en-US" xlink:label="lab_ifrs-full_ProportionOfVotingPowerHeldInSubsidiary" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proportion of voting rights held in subsidiary</link:label>
    <link:label id="lab_ifrs-full_ProportionOfVotingPowerHeldInSubsidiary_label_en-US" xlink:label="lab_ifrs-full_ProportionOfVotingPowerHeldInSubsidiary" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proportion of voting rights held in subsidiary</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProportionOfVotingPowerHeldInSubsidiary" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfVotingPowerHeldInSubsidiary"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProportionOfVotingPowerHeldInSubsidiary" xlink:to="lab_ifrs-full_ProportionOfVotingPowerHeldInSubsidiary" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BuyAndSellCurrencyOption_019b46bd-0684-7e69-be55-216400a2356e_terseLabel_en-US" xlink:label="lab_ck0000932782_BuyAndSellCurrencyOption" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Currency Options</link:label>
    <link:label id="lab_ck0000932782_BuyAndSellCurrencyOption_label_en-US" xlink:label="lab_ck0000932782_BuyAndSellCurrencyOption" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Buy And Sell Currency Option</link:label>
    <link:label id="lab_ck0000932782_BuyAndSellCurrencyOption_documentation_en-US" xlink:label="lab_ck0000932782_BuyAndSellCurrencyOption" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Buy and sell currency option.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BuyAndSellCurrencyOption" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BuyAndSellCurrencyOption"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BuyAndSellCurrencyOption" xlink:to="lab_ck0000932782_BuyAndSellCurrencyOption" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BuyAndSellInterestRateOption_019b46bd-0715-7e63-afd2-b940e6419549_terseLabel_en-US" xlink:label="lab_ck0000932782_BuyAndSellInterestRateOption" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Buy Cap, Sell Floor on floating in U.S. dollar SOFR 1M</link:label>
    <link:label id="lab_ck0000932782_BuyAndSellInterestRateOption_label_en-US" xlink:label="lab_ck0000932782_BuyAndSellInterestRateOption" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Buy And Sell Interest Rate Option</link:label>
    <link:label id="lab_ck0000932782_BuyAndSellInterestRateOption_documentation_en-US" xlink:label="lab_ck0000932782_BuyAndSellInterestRateOption" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Buy and sell interest rate option.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BuyAndSellInterestRateOption" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BuyAndSellInterestRateOption"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BuyAndSellInterestRateOption" xlink:to="lab_ck0000932782_BuyAndSellInterestRateOption" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_019b46bd-0715-704e-bb97-d71ede52a4ec_terseLabel_en-US" xlink:label="lab_ifrs-full_SignificantInvestmentsInSubsidiariesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsidiaries</link:label>
    <link:label id="lab_ifrs-full_SignificantInvestmentsInSubsidiariesDomain_label_en-US" xlink:label="lab_ifrs-full_SignificantInvestmentsInSubsidiariesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsidiaries [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SignificantInvestmentsInSubsidiariesDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_SignificantInvestmentsInSubsidiariesDomain" xlink:to="lab_ifrs-full_SignificantInvestmentsInSubsidiariesDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InterestRateSwap1Member_019b46bd-05e4-7caa-b415-64523177c145_terseLabel_en-US" xlink:label="lab_ck0000932782_InterestRateSwap1Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest Rate Swaps (U.S. dollars)</link:label>
    <link:label id="lab_ck0000932782_InterestRateSwap1Member_label_en-US" xlink:label="lab_ck0000932782_InterestRateSwap1Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Rate Swap 1 [member]</link:label>
    <link:label id="lab_ck0000932782_InterestRateSwap1Member_documentation_en-US" xlink:label="lab_ck0000932782_InterestRateSwap1Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interest rate swap.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterestRateSwap1Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterestRateSwap1Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterestRateSwap1Member" xlink:to="lab_ck0000932782_InterestRateSwap1Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_BorrowingsByNameAxis_019b46bd-0715-7b31-a752-b78da83f34b3_terseLabel_en-US" xlink:label="lab_ifrs-full_BorrowingsByNameAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Borrowings by name [axis]</link:label>
    <link:label id="lab_ifrs-full_BorrowingsByNameAxis_label_en-US" xlink:label="lab_ifrs-full_BorrowingsByNameAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Borrowings by name [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsByNameAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsByNameAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_BorrowingsByNameAxis" xlink:to="lab_ifrs-full_BorrowingsByNameAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesLineItems_019b46bd-0460-7959-a986-7daf778ee356_terseLabel_en-US" xlink:label="lab_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in deferred tax assets and liabilities [line items]</link:label>
    <link:label id="lab_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesLineItems_label_en-US" xlink:label="lab_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Changes in deferred tax assets and liabilities [line items]</link:label>
    <link:label id="lab_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesLineItems_documentation_en-US" xlink:label="lab_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Changes in deferred tax assets and liabilities [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesLineItems" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesLineItems" xlink:to="lab_ck0000932782_ChangesInDeferredTaxAssetsAndLiabilitiesLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ThirtyDaysSOFRPlus215BasisPointsMember_019b46bd-0715-756a-81aa-93433ea6468a_terseLabel_en-US" xlink:label="lab_ck0000932782_ThirtyDaysSOFRPlus215BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Thirty Days SOFR Plus 215 Basis Points</link:label>
    <link:label id="lab_ck0000932782_ThirtyDaysSOFRPlus215BasisPointsMember_label_en-US" xlink:label="lab_ck0000932782_ThirtyDaysSOFRPlus215BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Thirty Days SOFR Plus 215 Basis Points [Member]</link:label>
    <link:label id="lab_ck0000932782_ThirtyDaysSOFRPlus215BasisPointsMember_documentation_en-US" xlink:label="lab_ck0000932782_ThirtyDaysSOFRPlus215BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Thirty Days SOFR Plus 215 Basis Points</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ThirtyDaysSOFRPlus215BasisPointsMember" xlink:to="lab_ck0000932782_ThirtyDaysSOFRPlus215BasisPointsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DeferredTaxAssetsNonrecoverableAccountsReceivable_019b46bd-045f-7bcf-87a6-d02236287387_terseLabel_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsNonrecoverableAccountsReceivable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-recoverable accounts receivable</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxAssetsNonrecoverableAccountsReceivable_label_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsNonrecoverableAccountsReceivable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred tax assets non-recoverable accounts receivable</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxAssetsNonrecoverableAccountsReceivable_documentation_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsNonrecoverableAccountsReceivable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred tax assets non-recoverable accounts receivable.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DeferredTaxAssetsNonrecoverableAccountsReceivable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DeferredTaxAssetsNonrecoverableAccountsReceivable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DeferredTaxAssetsNonrecoverableAccountsReceivable" xlink:to="lab_ck0000932782_DeferredTaxAssetsNonrecoverableAccountsReceivable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_KeyManagementPersonnelCompensationOtherLongtermBenefits_019b46bd-053c-7240-8e8b-0cfd62916d06_terseLabel_en-US" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensationOtherLongtermBenefits" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term</link:label>
    <link:label id="lab_ifrs-full_KeyManagementPersonnelCompensationOtherLongtermBenefits_label_en-US" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensationOtherLongtermBenefits" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Key management personnel compensation, other long-term employee benefits</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_KeyManagementPersonnelCompensationOtherLongtermBenefits" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_KeyManagementPersonnelCompensationOtherLongtermBenefits"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_KeyManagementPersonnelCompensationOtherLongtermBenefits" xlink:to="lab_ifrs-full_KeyManagementPersonnelCompensationOtherLongtermBenefits" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OilAndGasProductionAssetsMember_019b46bd-0684-7d09-9fbd-06cfa9ee724a_terseLabel_en-US" xlink:label="lab_ck0000932782_OilAndGasProductionAssetsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Oil and gas production assets</link:label>
    <link:label id="lab_ck0000932782_OilAndGasProductionAssetsMember_label_en-US" xlink:label="lab_ck0000932782_OilAndGasProductionAssetsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Oil And Gas Production Assets [Member]</link:label>
    <link:label id="lab_ck0000932782_OilAndGasProductionAssetsMember_documentation_en-US" xlink:label="lab_ck0000932782_OilAndGasProductionAssetsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Oil and gas production assets [Member].</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OilAndGasProductionAssetsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OilAndGasProductionAssetsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OilAndGasProductionAssetsMember" xlink:to="lab_ck0000932782_OilAndGasProductionAssetsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_WelfareOilDutyLiability_019d067f-b334-7f28-91a0-af1b99c01a61_terseLabel_en-US" xlink:label="lab_ck0000932782_WelfareOilDutyLiability" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Welfare oil duty liability</link:label>
    <link:label id="lab_ck0000932782_WelfareOilDutyLiability_label_en-US" xlink:label="lab_ck0000932782_WelfareOilDutyLiability" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Welfare Oil Duty Liability</link:label>
    <link:label id="lab_ck0000932782_WelfareOilDutyLiability_documentation_en-US" xlink:label="lab_ck0000932782_WelfareOilDutyLiability" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Welfare Oil Duty Liability</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_WelfareOilDutyLiability" xlink:href="ck0000932782-20251231.xsd#ck0000932782_WelfareOilDutyLiability"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_WelfareOilDutyLiability" xlink:to="lab_ck0000932782_WelfareOilDutyLiability" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TransportationDistributionAndSaleExpenses_019b46bd-053c-7e68-bb26-8072c1910d61_terseLabel_en-US" xlink:label="lab_ck0000932782_TransportationDistributionAndSaleExpenses" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Distribution, transportation and sale expenses</link:label>
    <link:label id="lab_ck0000932782_TransportationDistributionAndSaleExpenses_019b46bd-053c-751a-8965-1c1c7bd77661_verboseLabel_en-US" xlink:label="lab_ck0000932782_TransportationDistributionAndSaleExpenses" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Distribution, transportation and sale expenses</link:label>
    <link:label id="lab_ck0000932782_TransportationDistributionAndSaleExpenses_label_en-US" xlink:label="lab_ck0000932782_TransportationDistributionAndSaleExpenses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Transportation, distribution and sale expenses</link:label>
    <link:label id="lab_ck0000932782_TransportationDistributionAndSaleExpenses_documentation_en-US" xlink:label="lab_ck0000932782_TransportationDistributionAndSaleExpenses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Transportation, distribution and sale expenses.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TransportationDistributionAndSaleExpenses" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TransportationDistributionAndSaleExpenses"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TransportationDistributionAndSaleExpenses" xlink:to="lab_ck0000932782_TransportationDistributionAndSaleExpenses" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CurrencyForwardMember_019b46bd-0715-7656-8902-863d5d23b900_terseLabel_en-US" xlink:label="lab_ck0000932782_CurrencyForwardMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Petr&#243;leos Mexicanos pays Pesos and receives U.S. dollar.</link:label>
    <link:label id="lab_ck0000932782_CurrencyForwardMember_label_en-US" xlink:label="lab_ck0000932782_CurrencyForwardMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Currency Forward [Member]</link:label>
    <link:label id="lab_ck0000932782_CurrencyForwardMember_documentation_en-US" xlink:label="lab_ck0000932782_CurrencyForwardMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Currency Forward</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CurrencyForwardMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CurrencyForwardMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CurrencyForwardMember" xlink:to="lab_ck0000932782_CurrencyForwardMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ThreeToFiveYearMember_019b46bd-0715-7f41-ad08-e7acca6c4f01_terseLabel_en-US" xlink:label="lab_ck0000932782_ThreeToFiveYearMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">3-5 years</link:label>
    <link:label id="lab_ck0000932782_ThreeToFiveYearMember_label_en-US" xlink:label="lab_ck0000932782_ThreeToFiveYearMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Three to Five Year [member]</link:label>
    <link:label id="lab_ck0000932782_ThreeToFiveYearMember_documentation_en-US" xlink:label="lab_ck0000932782_ThreeToFiveYearMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Three to five year.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ThreeToFiveYearMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ThreeToFiveYearMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ThreeToFiveYearMember" xlink:to="lab_ck0000932782_ThreeToFiveYearMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfFinancialInstrumentsExplanatory_019b46bd-0715-7f3f-ac9c-8a041a1cc047_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfFinancialInstrumentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial Instruments</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfFinancialInstrumentsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfFinancialInstrumentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of financial instruments [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFinancialInstrumentsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialInstrumentsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfFinancialInstrumentsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment_019b46bd-0715-7359-a226-b50aeb2af2ab_negatedLabel_en-US" xlink:label="lab_ifrs-full_ReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Reversal of impairment</link:label>
    <link:label id="lab_ifrs-full_ReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment_label_en-US" xlink:label="lab_ifrs-full_ReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reversal of impairment loss recognised in profit or loss, property, plant and equipment</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:to="lab_ifrs-full_ReversalOfImpairmentLossRecognisedInProfitOrLossPropertyPlantAndEquipment" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfIntangibleAssetsAndGoodwillDomain_019b46bd-045f-7be2-9413-61cb91ec3d66_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfIntangibleAssetsAndGoodwillDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of intangible assets and goodwill</link:label>
    <link:label id="lab_ifrs-full_ClassesOfIntangibleAssetsAndGoodwillDomain_label_en-US" xlink:label="lab_ifrs-full_ClassesOfIntangibleAssetsAndGoodwillDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of intangible assets and goodwill [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfIntangibleAssetsAndGoodwillDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfIntangibleAssetsAndGoodwillDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfIntangibleAssetsAndGoodwillDomain" xlink:to="lab_ifrs-full_ClassesOfIntangibleAssetsAndGoodwillDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_HydrocarbonDutiesAndTaxes_019b46bd-05e4-720f-907d-f9e36080b282_terseLabel_en-US" xlink:label="lab_ck0000932782_HydrocarbonDutiesAndTaxes" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hydrocarbon duties</link:label>
    <link:label id="lab_ck0000932782_HydrocarbonDutiesAndTaxes_label_en-US" xlink:label="lab_ck0000932782_HydrocarbonDutiesAndTaxes" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Hydrocarbon duties and taxes</link:label>
    <link:label id="lab_ck0000932782_HydrocarbonDutiesAndTaxes_documentation_en-US" xlink:label="lab_ck0000932782_HydrocarbonDutiesAndTaxes" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Hydrocarbon duties and taxes</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_HydrocarbonDutiesAndTaxes" xlink:href="ck0000932782-20251231.xsd#ck0000932782_HydrocarbonDutiesAndTaxes"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_HydrocarbonDutiesAndTaxes" xlink:to="lab_ck0000932782_HydrocarbonDutiesAndTaxes" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfSupplementaryInformationExplanatory_019b46bd-0715-7cc6-b710-3d823bf91000_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementaryInformationExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Supplementary Information On Oil and Gas Exploration And Production Activities (Unaudited)</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfSupplementaryInformationExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementaryInformationExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of Supplementary information [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfSupplementaryInformationExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementaryInformationExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The disclosure of supplementary information.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfSupplementaryInformationExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfSupplementaryInformationExplanatory"/>
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    <link:label id="lab_ck0000932782_ActuarialGainsAndLosses_019b46bd-053c-75e7-b317-990b34d6d3d1_terseLabel_en-US" xlink:label="lab_ck0000932782_ActuarialGainsAndLosses" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Actuarial (losses) gains - employee benefits, net of taxes</link:label>
    <link:label id="lab_ck0000932782_ActuarialGainsAndLosses_label_en-US" xlink:label="lab_ck0000932782_ActuarialGainsAndLosses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Actuarial gains and losses</link:label>
    <link:label id="lab_ck0000932782_ActuarialGainsAndLosses_documentation_en-US" xlink:label="lab_ck0000932782_ActuarialGainsAndLosses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Actuarial gains and losses.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ActuarialGainsAndLosses" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ActuarialGainsAndLosses"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ActuarialGainsAndLosses" xlink:to="lab_ck0000932782_ActuarialGainsAndLosses" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsLineItems_019b46bd-0684-7d59-8430-135487cf1c7b_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about intangible assets [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about intangible assets [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfIntangibleAssetsLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfIntangibleAssetsLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfIntangibleAssetsLineItems" xlink:to="lab_ifrs-full_DisclosureOfIntangibleAssetsLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ExtensionsAndDiscoveriesRelatedCost_019b46bd-0715-766b-a461-270d4bc43af2_negatedTerseLabel_en-US" xlink:label="lab_ck0000932782_ExtensionsAndDiscoveriesRelatedCost" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Extensions and discoveries</link:label>
    <link:label id="lab_ck0000932782_ExtensionsAndDiscoveriesRelatedCost_label_en-US" xlink:label="lab_ck0000932782_ExtensionsAndDiscoveriesRelatedCost" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Extensions And Discoveries Related Cost</link:label>
    <link:label id="lab_ck0000932782_ExtensionsAndDiscoveriesRelatedCost_documentation_en-US" xlink:label="lab_ck0000932782_ExtensionsAndDiscoveriesRelatedCost" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Extensions and discoveries related cost.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ExtensionsAndDiscoveriesRelatedCost" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ExtensionsAndDiscoveriesRelatedCost"/>
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    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionOneOctober2025Member_019bb20f-82a3-72f0-8927-0090b6cdff58_terseLabel_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionOneOctober2025Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position One, October 2025</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionOneOctober2025Member_label_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionOneOctober2025Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position One, October 2025 [Member]</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionOneOctober2025Member_documentation_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionOneOctober2025Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position One, October 2025</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StrengtheningOfFinancialPositionOneOctober2025Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StrengtheningOfFinancialPositionOneOctober2025Member"/>
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    <link:label id="lab_ck0000932782_ProductionOfProvedDevelopedReserves_label_en-US" xlink:label="lab_ck0000932782_ProductionOfProvedDevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Production of proved developed reserves</link:label>
    <link:label id="lab_ck0000932782_ProductionOfProvedDevelopedReserves_documentation_en-US" xlink:label="lab_ck0000932782_ProductionOfProvedDevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Production of proved developed reserves.</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProductionOfProvedDevelopedReserves" xlink:to="lab_ck0000932782_ProductionOfProvedDevelopedReserves" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_AssetLiabilityDefinedContribution_label_en-US" xlink:label="lab_ck0000932782_AssetLiabilityDefinedContribution" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset Liability Defined Contribution</link:label>
    <link:label id="lab_ck0000932782_AssetLiabilityDefinedContribution_documentation_en-US" xlink:label="lab_ck0000932782_AssetLiabilityDefinedContribution" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Asset liability defined contribution scheme</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AssetLiabilityDefinedContribution" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AssetLiabilityDefinedContribution"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AssetLiabilityDefinedContribution" xlink:to="lab_ck0000932782_AssetLiabilityDefinedContribution" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory_019b46bd-053c-745e-8663-f0250b83a1f6_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial instruments</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForFinancialInstrumentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Description of accounting policy for financial instruments [text block]</link:label>
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    <link:label id="lab_srt_ConsolidationEliminationsMember_019b46bd-0684-76bf-9bf4-ff1c256dc323_terseLabel_en-US" xlink:label="lab_srt_ConsolidationEliminationsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Eliminations</link:label>
    <link:label id="lab_srt_ConsolidationEliminationsMember_label_en-US" xlink:label="lab_srt_ConsolidationEliminationsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidation, Eliminations [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationEliminationsMember" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationEliminationsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ConsolidationEliminationsMember" xlink:to="lab_srt_ConsolidationEliminationsMember" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_DisclosureOfPrincipalAmountOutstandingOfRegisteredDebtSecuritiesExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfPrincipalAmountOutstandingOfRegisteredDebtSecuritiesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of Principal Amount Outstanding of Registered Debt Securities [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfPrincipalAmountOutstandingOfRegisteredDebtSecuritiesExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfPrincipalAmountOutstandingOfRegisteredDebtSecuritiesExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The disclosure of principal amount outstanding of registered debt securities.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfPrincipalAmountOutstandingOfRegisteredDebtSecuritiesExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfPrincipalAmountOutstandingOfRegisteredDebtSecuritiesExplanatory"/>
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    <link:label id="lab_ck0000932782_RevisionOfProvedDevelopedReserves_label_en-US" xlink:label="lab_ck0000932782_RevisionOfProvedDevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revision of Proved Developed Reserves</link:label>
    <link:label id="lab_ck0000932782_RevisionOfProvedDevelopedReserves_documentation_en-US" xlink:label="lab_ck0000932782_RevisionOfProvedDevelopedReserves" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Revision of Proved Developed Reserves</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RevisionOfProvedDevelopedReserves" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RevisionOfProvedDevelopedReserves"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_RevisionOfProvedDevelopedReserves" xlink:to="lab_ck0000932782_RevisionOfProvedDevelopedReserves" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RetainedEarningsExcludingProfitLossForReportingPeriodMember_019b46bd-0715-7b87-8380-357947fe4444_terseLabel_en-US" xlink:label="lab_ifrs-full_RetainedEarningsExcludingProfitLossForReportingPeriodMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accumulated deficit, from prior years</link:label>
    <link:label id="lab_ifrs-full_RetainedEarningsExcludingProfitLossForReportingPeriodMember_label_en-US" xlink:label="lab_ifrs-full_RetainedEarningsExcludingProfitLossForReportingPeriodMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retained earnings, excluding profit (loss) for reporting period [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RetainedEarningsExcludingProfitLossForReportingPeriodMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RetainedEarningsExcludingProfitLossForReportingPeriodMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RetainedEarningsExcludingProfitLossForReportingPeriodMember" xlink:to="lab_ifrs-full_RetainedEarningsExcludingProfitLossForReportingPeriodMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_WritedownsReversalsOfPropertyPlantAndEquipment_019b46bd-0684-7986-a216-38ab6dd6b032_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_WritedownsReversalsOfPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">(Impairment) of wells, pipelines, properties, plant and equipment, net</link:label>
    <link:label id="lab_ifrs-full_WritedownsReversalsOfPropertyPlantAndEquipment_019b46bd-0684-7aba-8629-4bfc79f41d3b_negatedLabel_en-US" xlink:label="lab_ifrs-full_WritedownsReversalsOfPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">(Impairment), net</link:label>
    <link:label id="lab_ifrs-full_WritedownsReversalsOfPropertyPlantAndEquipment_label_en-US" xlink:label="lab_ifrs-full_WritedownsReversalsOfPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Write-downs (reversals of write-downs) of property, plant and equipment</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_WritedownsReversalsOfPropertyPlantAndEquipment" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_WritedownsReversalsOfPropertyPlantAndEquipment"/>
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    <link:label id="lab_ck0000932782_UnrealizedForeignExchangeGainLoss_019b46bd-05e4-78b5-974e-9a149b0ea27a_terseLabel_en-US" xlink:label="lab_ck0000932782_UnrealizedForeignExchangeGainLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrealized foreign exchange loss (gains)</link:label>
    <link:label id="lab_ck0000932782_UnrealizedForeignExchangeGainLoss_label_en-US" xlink:label="lab_ck0000932782_UnrealizedForeignExchangeGainLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrealized Foreign Exchange Gain Loss</link:label>
    <link:label id="lab_ck0000932782_UnrealizedForeignExchangeGainLoss_documentation_en-US" xlink:label="lab_ck0000932782_UnrealizedForeignExchangeGainLoss" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Unrealized foreign exchange gain loss.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_UnrealizedForeignExchangeGainLoss" xlink:href="ck0000932782-20251231.xsd#ck0000932782_UnrealizedForeignExchangeGainLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_UnrealizedForeignExchangeGainLoss" xlink:to="lab_ck0000932782_UnrealizedForeignExchangeGainLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfInventoriesTable_019b46bd-045f-7b24-9329-3a0421e9e2bd_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfInventoriesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of inventories [table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfInventoriesTable_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfInventoriesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of inventories [table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfInventoriesTable_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfInventoriesTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of inventories.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfInventoriesTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfInventoriesTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfInventoriesTable" xlink:to="lab_ck0000932782_DisclosureOfInventoriesTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_019b46bd-0715-7994-9387-6f369a97223f_totalLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Funds from operating activities</link:label>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_label_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash flows from (used in) operations before changes in working capital</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital"/>
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    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEPlus225BasisPointsMember_label_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEPlus225BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE Plus 225 Basis Points [Member]</link:label>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEPlus225BasisPointsMember_documentation_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEPlus225BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE Plus 225 Basis Points</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TwentyEightDaysTIIEPlus225BasisPointsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TwentyEightDaysTIIEPlus225BasisPointsMember"/>
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    <link:label id="lab_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows_019b46bd-0684-7d7e-8d18-ef3eb3f3798a_negatedLabel_en-US" xlink:label="lab_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Effect of discounting net cash flows by 10%</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows"/>
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    <link:label id="lab_ck0000932782_MGASMember_019b46bd-05e4-7335-b3f3-e0926a6e80f6_terseLabel_en-US" xlink:label="lab_ck0000932782_MGASMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">MGAS</link:label>
    <link:label id="lab_ck0000932782_MGASMember_label_en-US" xlink:label="lab_ck0000932782_MGASMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">MGAS [Member]</link:label>
    <link:label id="lab_ck0000932782_MGASMember_documentation_en-US" xlink:label="lab_ck0000932782_MGASMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">MGAS</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MGASMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MGASMember"/>
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    <link:label id="lab_ck0000932782_OneHundredEightyTwoDaysTIIERateMember_019b46bd-05e4-7f26-8c72-68ae5bca2de1_terseLabel_en-US" xlink:label="lab_ck0000932782_OneHundredEightyTwoDaysTIIERateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">One Hundred Eighty Two Days TIIE Rate</link:label>
    <link:label id="lab_ck0000932782_OneHundredEightyTwoDaysTIIERateMember_label_en-US" xlink:label="lab_ck0000932782_OneHundredEightyTwoDaysTIIERateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">One Hundred Eighty Two Days TIIE Rate [Member]</link:label>
    <link:label id="lab_ck0000932782_OneHundredEightyTwoDaysTIIERateMember_documentation_en-US" xlink:label="lab_ck0000932782_OneHundredEightyTwoDaysTIIERateMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">OneHundredAndEightyTwoDaysTIIERate.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OneHundredEightyTwoDaysTIIERateMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OneHundredEightyTwoDaysTIIERateMember"/>
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    <link:label id="lab_ck0000932782_ExplorationAndExtractionContractsMember_019b46bd-0715-7325-a57d-b3eeaba2633c_terseLabel_en-US" xlink:label="lab_ck0000932782_ExplorationAndExtractionContractsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exploration and extraction contracts</link:label>
    <link:label id="lab_ck0000932782_ExplorationAndExtractionContractsMember_label_en-US" xlink:label="lab_ck0000932782_ExplorationAndExtractionContractsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exploration and extraction contracts [member]</link:label>
    <link:label id="lab_ck0000932782_ExplorationAndExtractionContractsMember_documentation_en-US" xlink:label="lab_ck0000932782_ExplorationAndExtractionContractsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Exploration and extraction contracts [member]</link:label>
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    <link:label id="lab_ck0000932782_DebtIssueRelatedCosts_documentation_en-US" xlink:label="lab_ck0000932782_DebtIssueRelatedCosts" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Issue Related Costs.</link:label>
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    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionOneNovember2025Member_documentation_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionOneNovember2025Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position One, November 2025</link:label>
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    <link:label id="lab_ck0000932782_GasAndCondensateProductsMember_019b46bd-0715-7b73-b3fd-5ce4598f2ab9_terseLabel_en-US" xlink:label="lab_ck0000932782_GasAndCondensateProductsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gas and condensate products</link:label>
    <link:label id="lab_ck0000932782_GasAndCondensateProductsMember_label_en-US" xlink:label="lab_ck0000932782_GasAndCondensateProductsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gas And Condensate Products [member]</link:label>
    <link:label id="lab_ck0000932782_GasAndCondensateProductsMember_documentation_en-US" xlink:label="lab_ck0000932782_GasAndCondensateProductsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gas and condensate products.</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_019b46bd-0715-7b63-b969-8213ae3112a5_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of transactions between related parties [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of transactions between related parties [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesTable"/>
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    <link:label id="lab_ck0000932782_CosoleacaquePetrochemicalComplexMember_label_en-US" xlink:label="lab_ck0000932782_CosoleacaquePetrochemicalComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cosoleacaque Petrochemical Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_CosoleacaquePetrochemicalComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_CosoleacaquePetrochemicalComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cosoleacaque petrochemical complex.</link:label>
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    <link:label id="lab_ck0000932782_PemexCurvesSensitivityDebt_label_en-US" xlink:label="lab_ck0000932782_PemexCurvesSensitivityDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pemex Curves Sensitivity Debt</link:label>
    <link:label id="lab_ck0000932782_PemexCurvesSensitivityDebt_documentation_en-US" xlink:label="lab_ck0000932782_PemexCurvesSensitivityDebt" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Pemex curves sensitivity debt.</link:label>
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    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionThreeSeptember2025Member_label_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionThreeSeptember2025Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Three, September 2025 [Member]</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionThreeSeptember2025Member_documentation_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionThreeSeptember2025Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Three, September 2025</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StrengtheningOfFinancialPositionThreeSeptember2025Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StrengtheningOfFinancialPositionThreeSeptember2025Member"/>
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    <link:label id="lab_ifrs-full_ProfitLossAbstract_019b46bd-0715-7226-964c-ee7a6f21e597_terseLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net revenues</link:label>
    <link:label id="lab_ifrs-full_ProfitLossAbstract_label_en-US" xlink:label="lab_ifrs-full_ProfitLossAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit (loss) [abstract]</link:label>
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    <link:label id="lab_ck0000932782_TwoThousandAndTwentyFiveMember_label_en-US" xlink:label="lab_ck0000932782_TwoThousandAndTwentyFiveMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Two Thousand And Twenty Five [Member]</link:label>
    <link:label id="lab_ck0000932782_TwoThousandAndTwentyFiveMember_documentation_en-US" xlink:label="lab_ck0000932782_TwoThousandAndTwentyFiveMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Two Thousand And Twenty Five</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TwoThousandAndTwentyFiveMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TwoThousandAndTwentyFiveMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TwoThousandAndTwentyFiveMember" xlink:to="lab_ck0000932782_TwoThousandAndTwentyFiveMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AceiteTerciarioDelGolfoLakachTamaulipasConstitucionesAndTsiminXuxCGUsMember_019b46bd-0715-7088-9266-6bbec33710b8_terseLabel_en-US" xlink:label="lab_ck0000932782_AceiteTerciarioDelGolfoLakachTamaulipasConstitucionesAndTsiminXuxCGUsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Aceite Terciario del Golfo, Lakach, Tamaulipas Constituciones and Tsimin Xux CGU's</link:label>
    <link:label id="lab_ck0000932782_AceiteTerciarioDelGolfoLakachTamaulipasConstitucionesAndTsiminXuxCGUsMember_label_en-US" xlink:label="lab_ck0000932782_AceiteTerciarioDelGolfoLakachTamaulipasConstitucionesAndTsiminXuxCGUsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Aceite Terciario del Golfo, Lakach, Tamaulipas Constituciones and Tsimin Xux CGU's [Member]</link:label>
    <link:label id="lab_ck0000932782_AceiteTerciarioDelGolfoLakachTamaulipasConstitucionesAndTsiminXuxCGUsMember_documentation_en-US" xlink:label="lab_ck0000932782_AceiteTerciarioDelGolfoLakachTamaulipasConstitucionesAndTsiminXuxCGUsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Aceite Terciario del Golfo, Lakach, Tamaulipas Constituciones and Tsimin Xux CGU's</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AceiteTerciarioDelGolfoLakachTamaulipasConstitucionesAndTsiminXuxCGUsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AceiteTerciarioDelGolfoLakachTamaulipasConstitucionesAndTsiminXuxCGUsMember"/>
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    <link:label id="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable_019b46bd-05e4-773e-8d9f-83e0b0626a36_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of non-adjusting events after reporting period [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of non-adjusting events after reporting period [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodTable"/>
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    <link:label id="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory_019b46bd-0715-7a34-8108-938602c93895_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Wells, Pipelines, Properties, Plant and Equipment, Net</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of property, plant and equipment [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentExplanatory"/>
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    <link:label id="lab_ifrs-full_OtherRevenue_019b46bd-0684-7159-b332-dc47ec520a93_verboseLabel_en-US" xlink:label="lab_ifrs-full_OtherRevenue" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other revenue</link:label>
    <link:label id="lab_ifrs-full_OtherRevenue_019b46bd-0684-7b66-97ee-cc0335290623_totalLabel_en-US" xlink:label="lab_ifrs-full_OtherRevenue" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Other revenues</link:label>
    <link:label id="lab_ifrs-full_OtherRevenue_label_en-US" xlink:label="lab_ifrs-full_OtherRevenue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other revenue</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherRevenue" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherRevenue"/>
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    <link:label id="lab_ifrs-full_ComponentsOfEquityDomain_label_en-US" xlink:label="lab_ifrs-full_ComponentsOfEquityDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Components of equity [domain]</link:label>
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    <link:label id="lab_ck0000932782_GovernmentContributionsNatureOfContributionAxis_label_en-US" xlink:label="lab_ck0000932782_GovernmentContributionsNatureOfContributionAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Government Contributions, Nature Of Contribution [Axis]</link:label>
    <link:label id="lab_ck0000932782_GovernmentContributionsNatureOfContributionAxis_documentation_en-US" xlink:label="lab_ck0000932782_GovernmentContributionsNatureOfContributionAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Government Contributions, Nature Of Contribution</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GovernmentContributionsNatureOfContributionAxis" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GovernmentContributionsNatureOfContributionAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_GovernmentContributionsNatureOfContributionAxis" xlink:to="lab_ck0000932782_GovernmentContributionsNatureOfContributionAxis" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_DisclosureOfNotesReceivableGovernmentBondsAndOtherNonCurrentAssetsTable_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfNotesReceivableGovernmentBondsAndOtherNonCurrentAssetsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Notes Receivable Government Bonds And Other Non Current Assets [Table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfNotesReceivableGovernmentBondsAndOtherNonCurrentAssetsTable_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfNotesReceivableGovernmentBondsAndOtherNonCurrentAssetsTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Notes Receivable Government Bonds And Other Non Current Assets [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfNotesReceivableGovernmentBondsAndOtherNonCurrentAssetsTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfNotesReceivableGovernmentBondsAndOtherNonCurrentAssetsTable"/>
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    <link:label id="lab_ifrs-full_ProvisionUsedOtherProvisions_label_en-US" xlink:label="lab_ifrs-full_ProvisionUsedOtherProvisions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provision used, other provisions</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProvisionUsedOtherProvisions" xlink:to="lab_ifrs-full_ProvisionUsedOtherProvisions" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_KeyManagementPersonnelCompensationTerminationBenefits_019b46bd-045f-7582-bb4e-0ca116776175_totalLabel_en-US" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensationTerminationBenefits" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ifrs-full_KeyManagementPersonnelCompensationTerminationBenefits_label_en-US" xlink:label="lab_ifrs-full_KeyManagementPersonnelCompensationTerminationBenefits" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Key management personnel compensation, termination benefits</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_KeyManagementPersonnelCompensationTerminationBenefits" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_KeyManagementPersonnelCompensationTerminationBenefits"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_KeyManagementPersonnelCompensationTerminationBenefits" xlink:to="lab_ifrs-full_KeyManagementPersonnelCompensationTerminationBenefits" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RangeDomain_019b46bd-053c-7712-805c-309cf7b02df0_terseLabel_en-US" xlink:label="lab_ifrs-full_RangeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Range</link:label>
    <link:label id="lab_ifrs-full_RangeDomain_label_en-US" xlink:label="lab_ifrs-full_RangeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Range [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RangeDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RangeDomain"/>
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    <link:label id="lab_ifrs-full_ClassesOfContingentLiabilitiesAxis_019b46bd-0684-79d0-8d01-bed7bfffd5b4_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfContingentLiabilitiesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of contingent liabilities [axis]</link:label>
    <link:label id="lab_ifrs-full_ClassesOfContingentLiabilitiesAxis_label_en-US" xlink:label="lab_ifrs-full_ClassesOfContingentLiabilitiesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of contingent liabilities [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfContingentLiabilitiesAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfContingentLiabilitiesAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfContingentLiabilitiesAxis" xlink:to="lab_ifrs-full_ClassesOfContingentLiabilitiesAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment_019b46bd-0684-704e-a5c2-0d844fd65127_negatedLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Loss from derecognition of disposal of wells, pipelines, properties, plant and equipment</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments for gain (loss) on disposals, property, plant and equipment</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment" xlink:to="lab_ifrs-full_AdjustmentsForGainLossOnDisposalsPropertyPlantAndEquipment" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ServicesMember_019b46bd-0684-71c0-bc27-7ac09ad1be49_terseLabel_en-US" xlink:label="lab_ck0000932782_ServicesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Services</link:label>
    <link:label id="lab_ck0000932782_ServicesMember_label_en-US" xlink:label="lab_ck0000932782_ServicesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Services [member]</link:label>
    <link:label id="lab_ck0000932782_ServicesMember_documentation_en-US" xlink:label="lab_ck0000932782_ServicesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Services.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ServicesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ServicesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ServicesMember" xlink:to="lab_ck0000932782_ServicesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OneHundredEightyTwoDaysTIIEPlus182BasisPointsMember_019b46bd-053c-718d-bede-76ebd191b908_terseLabel_en-US" xlink:label="lab_ck0000932782_OneHundredEightyTwoDaysTIIEPlus182BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">One Hundred Eighty Two Days TIIE Plus 182 Basis Points</link:label>
    <link:label id="lab_ck0000932782_OneHundredEightyTwoDaysTIIEPlus182BasisPointsMember_label_en-US" xlink:label="lab_ck0000932782_OneHundredEightyTwoDaysTIIEPlus182BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">One Hundred Eighty Two Days TIIE Plus 182 Basis Points [Member]</link:label>
    <link:label id="lab_ck0000932782_OneHundredEightyTwoDaysTIIEPlus182BasisPointsMember_documentation_en-US" xlink:label="lab_ck0000932782_OneHundredEightyTwoDaysTIIEPlus182BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">One Hundred Eighty Days TIIE Plus 160 Basis Points</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OneHundredEightyTwoDaysTIIEPlus182BasisPointsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OneHundredEightyTwoDaysTIIEPlus182BasisPointsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OneHundredEightyTwoDaysTIIEPlus182BasisPointsMember" xlink:to="lab_ck0000932782_OneHundredEightyTwoDaysTIIEPlus182BasisPointsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CreditLossExperiencePeriod_019b46bd-0715-7e55-b7c3-9a9b2313497a_terseLabel_en-US" xlink:label="lab_ck0000932782_CreditLossExperiencePeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit loss experience period</link:label>
    <link:label id="lab_ck0000932782_CreditLossExperiencePeriod_label_en-US" xlink:label="lab_ck0000932782_CreditLossExperiencePeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit loss experience period</link:label>
    <link:label id="lab_ck0000932782_CreditLossExperiencePeriod_documentation_en-US" xlink:label="lab_ck0000932782_CreditLossExperiencePeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Credit loss experience period.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CreditLossExperiencePeriod" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CreditLossExperiencePeriod"/>
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    <link:label id="lab_ck0000932782_ThreeMonthSecuredOvernightFinancingRateMember_019b46bd-05e4-7291-9bba-5e166d4d30ca_terseLabel_en-US" xlink:label="lab_ck0000932782_ThreeMonthSecuredOvernightFinancingRateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Three Month Secured Overnight Financing Rate</link:label>
    <link:label id="lab_ck0000932782_ThreeMonthSecuredOvernightFinancingRateMember_label_en-US" xlink:label="lab_ck0000932782_ThreeMonthSecuredOvernightFinancingRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Three Month Secured Overnight Financing Rate [Member]</link:label>
    <link:label id="lab_ck0000932782_ThreeMonthSecuredOvernightFinancingRateMember_documentation_en-US" xlink:label="lab_ck0000932782_ThreeMonthSecuredOvernightFinancingRateMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Three Month Secured Overnight Financing Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ThreeMonthSecuredOvernightFinancingRateMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ThreeMonthSecuredOvernightFinancingRateMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ThreeMonthSecuredOvernightFinancingRateMember" xlink:to="lab_ck0000932782_ThreeMonthSecuredOvernightFinancingRateMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_VesselMember_019b46bd-045f-78b5-ac8f-027c0738f927_terseLabel_en-US" xlink:label="lab_ck0000932782_VesselMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Vessel</link:label>
    <link:label id="lab_ck0000932782_VesselMember_label_en-US" xlink:label="lab_ck0000932782_VesselMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Vessel [Member]</link:label>
    <link:label id="lab_ck0000932782_VesselMember_documentation_en-US" xlink:label="lab_ck0000932782_VesselMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Vessel [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_VesselMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_VesselMember"/>
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    <link:label id="lab_ifrs-full_DisclosureOfChangesInAccountingEstimatesAbstract_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfChangesInAccountingEstimatesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of changes in accounting estimates [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfChangesInAccountingEstimatesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfChangesInAccountingEstimatesAbstract"/>
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    <link:label id="lab_ck0000932782_FinancialArrangementTerm_019b46bd-05e5-7e70-bc75-d3fafe4d6c4f_terseLabel_en-US" xlink:label="lab_ck0000932782_FinancialArrangementTerm" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial arrangement, term</link:label>
    <link:label id="lab_ck0000932782_FinancialArrangementTerm_label_en-US" xlink:label="lab_ck0000932782_FinancialArrangementTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Arrangement Term</link:label>
    <link:label id="lab_ck0000932782_FinancialArrangementTerm_documentation_en-US" xlink:label="lab_ck0000932782_FinancialArrangementTerm" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial Arrangement Term</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FinancialArrangementTerm" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FinancialArrangementTerm"/>
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    <link:label id="lab_ifrs-full_ExpectedCreditLossRate_019b46bd-05e4-765e-9d5e-ad6277cbadff_terseLabel_en-US" xlink:label="lab_ifrs-full_ExpectedCreditLossRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected percentage of credit loss for accounts receivable</link:label>
    <link:label id="lab_ifrs-full_ExpectedCreditLossRate_label_en-US" xlink:label="lab_ifrs-full_ExpectedCreditLossRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expected credit loss rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ExpectedCreditLossRate" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ExpectedCreditLossRate"/>
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    <link:label id="lab_ck0000932782_DisclosureOfOtherIntangibleAssetsTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfOtherIntangibleAssetsTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of other intangible assets.</link:label>
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    <link:label id="lab_ck0000932782_TwentyEightDaysSOFRPlus350BasisPointsMember_019b46bd-053c-7388-a2ee-c71cad23ba41_terseLabel_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysSOFRPlus350BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Twenty Eight Days SOFR Plus 350 Basis Points</link:label>
    <link:label id="lab_ck0000932782_TwentyEightDaysSOFRPlus350BasisPointsMember_label_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysSOFRPlus350BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Twenty Eight Days SOFR Plus 350 Basis Points [Member]</link:label>
    <link:label id="lab_ck0000932782_TwentyEightDaysSOFRPlus350BasisPointsMember_documentation_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysSOFRPlus350BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Twenty Eight Days SOFR Plus 350 Basis Points</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TwentyEightDaysSOFRPlus350BasisPointsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TwentyEightDaysSOFRPlus350BasisPointsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TwentyEightDaysSOFRPlus350BasisPointsMember" xlink:to="lab_ck0000932782_TwentyEightDaysSOFRPlus350BasisPointsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProductionVolume_019b46bd-045f-7354-a039-5ce0969a0c13_terseLabel_en-US" xlink:label="lab_ck0000932782_ProductionVolume" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Production forecast</link:label>
    <link:label id="lab_ck0000932782_ProductionVolume_label_en-US" xlink:label="lab_ck0000932782_ProductionVolume" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Production Volume</link:label>
    <link:label id="lab_ck0000932782_ProductionVolume_documentation_en-US" xlink:label="lab_ck0000932782_ProductionVolume" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Production volume.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProductionVolume" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProductionVolume"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProductionVolume" xlink:to="lab_ck0000932782_ProductionVolume" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AccruedInterestFromMexicanBonds_019b46bd-0684-70b4-920c-964820cee438_terseLabel_en-US" xlink:label="lab_ck0000932782_AccruedInterestFromMexicanBonds" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued interest</link:label>
    <link:label id="lab_ck0000932782_AccruedInterestFromMexicanBonds_label_en-US" xlink:label="lab_ck0000932782_AccruedInterestFromMexicanBonds" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Interest From Mexican Bonds</link:label>
    <link:label id="lab_ck0000932782_AccruedInterestFromMexicanBonds_documentation_en-US" xlink:label="lab_ck0000932782_AccruedInterestFromMexicanBonds" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Accrued interest from mexican bonds.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AccruedInterestFromMexicanBonds" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AccruedInterestFromMexicanBonds"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AccruedInterestFromMexicanBonds" xlink:to="lab_ck0000932782_AccruedInterestFromMexicanBonds" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAssetAbstract_019b46bd-0684-7c71-b60b-f0782a49ed94_verboseLabel_en-US" xlink:label="lab_ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAssetAbstract" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Actuarial losses (gains) recognized in income due to:</link:label>
    <link:label id="lab_ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAssetAbstract_label_en-US" xlink:label="lab_ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAssetAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Changes in net defined benefit liability (asset) resulting from gain (loss) on remeasurement in other comprehensive income [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAssetAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAssetAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAssetAbstract" xlink:to="lab_ifrs-full_GainLossOnRemeasurementOfNetDefinedBenefitLiabilityAssetAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_AddressTypeDomain_019b46bd-05e4-74ec-913e-8d30e86b17fb_terseLabel_en-US" xlink:label="lab_dei_AddressTypeDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Address Type [Domain]</link:label>
    <link:label id="lab_dei_AddressTypeDomain_label_en-US" xlink:label="lab_dei_AddressTypeDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Address Type [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AddressTypeDomain" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AddressTypeDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AddressTypeDomain" xlink:to="lab_dei_AddressTypeDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NotionalAmount_019b46bd-0684-7470-8f76-40f329d04022_verboseLabel_en-US" xlink:label="lab_ifrs-full_NotionalAmount" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Notional amount of debt issued</link:label>
    <link:label id="lab_ifrs-full_NotionalAmount_019b46bd-0684-74e9-9548-830c815bd5f2_terseLabel_en-US" xlink:label="lab_ifrs-full_NotionalAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Notional Amount</link:label>
    <link:label id="lab_ifrs-full_NotionalAmount_label_en-US" xlink:label="lab_ifrs-full_NotionalAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notional amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NotionalAmount" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NotionalAmount"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NotionalAmount" xlink:to="lab_ifrs-full_NotionalAmount" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FertilizersSegmentMember_019b46bd-053c-7374-b5bd-fe8515f6f024_terseLabel_en-US" xlink:label="lab_ck0000932782_FertilizersSegmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fertilizers</link:label>
    <link:label id="lab_ck0000932782_FertilizersSegmentMember_label_en-US" xlink:label="lab_ck0000932782_FertilizersSegmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fertilizers Segment [member]</link:label>
    <link:label id="lab_ck0000932782_FertilizersSegmentMember_documentation_en-US" xlink:label="lab_ck0000932782_FertilizersSegmentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fertilizers segment.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FertilizersSegmentMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FertilizersSegmentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FertilizersSegmentMember" xlink:to="lab_ck0000932782_FertilizersSegmentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PMICIMMember_019b46bd-0684-7130-ab6a-06e899bd3458_terseLabel_en-US" xlink:label="lab_ck0000932782_PMICIMMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">PMI CIM</link:label>
    <link:label id="lab_ck0000932782_PMICIMMember_label_en-US" xlink:label="lab_ck0000932782_PMICIMMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">PMI CIM [member]</link:label>
    <link:label id="lab_ck0000932782_PMICIMMember_documentation_en-US" xlink:label="lab_ck0000932782_PMICIMMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">PMI CIM.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PMICIMMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PMICIMMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PMICIMMember" xlink:to="lab_ck0000932782_PMICIMMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentLeaseLiabilities_019b46bd-053c-79d6-bc14-34b58bfe888e_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term leases</link:label>
    <link:label id="lab_ifrs-full_CurrentLeaseLiabilities_019b46bd-053c-7422-95ce-d714cdff4bd9_verboseLabel_en-US" xlink:label="lab_ifrs-full_CurrentLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Current lease liability</link:label>
    <link:label id="lab_ifrs-full_CurrentLeaseLiabilities_label_en-US" xlink:label="lab_ifrs-full_CurrentLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current lease liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLeaseLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLeaseLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentLeaseLiabilities" xlink:to="lab_ifrs-full_CurrentLeaseLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SalamancaRefineryMember_019b46bd-053c-71f5-a143-2185f9cd5e4c_terseLabel_en-US" xlink:label="lab_ck0000932782_SalamancaRefineryMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Salamanca Refinery</link:label>
    <link:label id="lab_ck0000932782_SalamancaRefineryMember_label_en-US" xlink:label="lab_ck0000932782_SalamancaRefineryMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Salamanca Refinery [Member]</link:label>
    <link:label id="lab_ck0000932782_SalamancaRefineryMember_documentation_en-US" xlink:label="lab_ck0000932782_SalamancaRefineryMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Salamanca refinery.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SalamancaRefineryMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SalamancaRefineryMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SalamancaRefineryMember" xlink:to="lab_ck0000932782_SalamancaRefineryMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BlockSeventeenMember_019b46bd-05e4-7728-8af2-0a9d6c864380_terseLabel_en-US" xlink:label="lab_ck0000932782_BlockSeventeenMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Block 17</link:label>
    <link:label id="lab_ck0000932782_BlockSeventeenMember_label_en-US" xlink:label="lab_ck0000932782_BlockSeventeenMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Block seventeen [member]</link:label>
    <link:label id="lab_ck0000932782_BlockSeventeenMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockSeventeenMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block seventeen.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockSeventeenMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockSeventeenMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BlockSeventeenMember" xlink:to="lab_ck0000932782_BlockSeventeenMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DEAErdoelMember_019b46bd-0684-7277-bd62-834114e0b13d_terseLabel_en-US" xlink:label="lab_ck0000932782_DEAErdoelMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">DEA Erdoel</link:label>
    <link:label id="lab_ck0000932782_DEAErdoelMember_label_en-US" xlink:label="lab_ck0000932782_DEAErdoelMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">DEA Erdoel [member]</link:label>
    <link:label id="lab_ck0000932782_DEAErdoelMember_documentation_en-US" xlink:label="lab_ck0000932782_DEAErdoelMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">DEA Erdoel.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DEAErdoelMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DEAErdoelMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DEAErdoelMember" xlink:to="lab_ck0000932782_DEAErdoelMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SummaryOfLeasesLiabilitiesTableTextBlock_019b46bd-0715-709e-b05d-264136e61be9_terseLabel_en-US" xlink:label="lab_ck0000932782_SummaryOfLeasesLiabilitiesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of leases liabilities</link:label>
    <link:label id="lab_ck0000932782_SummaryOfLeasesLiabilitiesTableTextBlock_label_en-US" xlink:label="lab_ck0000932782_SummaryOfLeasesLiabilitiesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Summary Of Leases Liabilities [Table Text Block]</link:label>
    <link:label id="lab_ck0000932782_SummaryOfLeasesLiabilitiesTableTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_SummaryOfLeasesLiabilitiesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Summary of leases liabilities.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SummaryOfLeasesLiabilitiesTableTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SummaryOfLeasesLiabilitiesTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SummaryOfLeasesLiabilitiesTableTextBlock" xlink:to="lab_ck0000932782_SummaryOfLeasesLiabilitiesTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DescriptionOfAccountingPolicyForContingenciesExplanatory_019b46bd-0684-7b53-bff3-4e20117cdc71_terseLabel_en-US" xlink:label="lab_ck0000932782_DescriptionOfAccountingPolicyForContingenciesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contingencies</link:label>
    <link:label id="lab_ck0000932782_DescriptionOfAccountingPolicyForContingenciesExplanatory_label_en-US" xlink:label="lab_ck0000932782_DescriptionOfAccountingPolicyForContingenciesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Description Of Accounting Policy For Contingencies [text block]</link:label>
    <link:label id="lab_ck0000932782_DescriptionOfAccountingPolicyForContingenciesExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DescriptionOfAccountingPolicyForContingenciesExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Description of accounting policy for contingencies.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DescriptionOfAccountingPolicyForContingenciesExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DescriptionOfAccountingPolicyForContingenciesExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DescriptionOfAccountingPolicyForContingenciesExplanatory" xlink:to="lab_ck0000932782_DescriptionOfAccountingPolicyForContingenciesExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfAverageSalesPricesForOilAndGasProductionExplanatory_019b46bd-0715-7911-b026-bc0c35d9bbbf_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfAverageSalesPricesForOilAndGasProductionExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Results of Operations for Oil and Gas Producing Activities</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfAverageSalesPricesForOilAndGasProductionExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfAverageSalesPricesForOilAndGasProductionExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Average Sales Prices For Oil And Gas Production [table text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfAverageSalesPricesForOilAndGasProductionExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfAverageSalesPricesForOilAndGasProductionExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of average sales prices for oil and gas production explanatory.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfAverageSalesPricesForOilAndGasProductionExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfAverageSalesPricesForOilAndGasProductionExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfAverageSalesPricesForOilAndGasProductionExplanatory" xlink:to="lab_ck0000932782_DisclosureOfAverageSalesPricesForOilAndGasProductionExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_MaturityDomain_019b46bd-053c-7ca8-8891-aa9c6a1e8ef3_terseLabel_en-US" xlink:label="lab_ifrs-full_MaturityDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maturity</link:label>
    <link:label id="lab_ifrs-full_MaturityDomain_label_en-US" xlink:label="lab_ifrs-full_MaturityDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maturity [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MaturityDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MaturityDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_MaturityDomain" xlink:to="lab_ifrs-full_MaturityDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfConsolidatedAndSeparateFinancialStatementsExplanatory_019b46bd-0715-7a83-9097-39438f3341f1_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfConsolidatedAndSeparateFinancialStatementsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consolidated and Separate Financial Statements</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfConsolidatedAndSeparateFinancialStatementsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfConsolidatedAndSeparateFinancialStatementsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of information about separate financial statements [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfConsolidatedAndSeparateFinancialStatementsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfConsolidatedAndSeparateFinancialStatementsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfConsolidatedAndSeparateFinancialStatementsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfConsolidatedAndSeparateFinancialStatementsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PlegadoPerdidoBlockTwoMember_019b46bd-05e4-7b7c-b947-c6f3ea0a05a3_terseLabel_en-US" xlink:label="lab_ck0000932782_PlegadoPerdidoBlockTwoMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plegado Perdido Block Two</link:label>
    <link:label id="lab_ck0000932782_PlegadoPerdidoBlockTwoMember_label_en-US" xlink:label="lab_ck0000932782_PlegadoPerdidoBlockTwoMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plegado Perdido Block two [member]</link:label>
    <link:label id="lab_ck0000932782_PlegadoPerdidoBlockTwoMember_documentation_en-US" xlink:label="lab_ck0000932782_PlegadoPerdidoBlockTwoMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Plegado Perdido block two.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PlegadoPerdidoBlockTwoMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PlegadoPerdidoBlockTwoMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PlegadoPerdidoBlockTwoMember" xlink:to="lab_ck0000932782_PlegadoPerdidoBlockTwoMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CategoriesOfFinancialLiabilitiesAxis_019b46bd-05e5-74f4-9a6f-aff0dad566eb_terseLabel_en-US" xlink:label="lab_ifrs-full_CategoriesOfFinancialLiabilitiesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Categories of financial liabilities [axis]</link:label>
    <link:label id="lab_ifrs-full_CategoriesOfFinancialLiabilitiesAxis_label_en-US" xlink:label="lab_ifrs-full_CategoriesOfFinancialLiabilitiesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Categories of financial liabilities [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CategoriesOfFinancialLiabilitiesAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialLiabilitiesAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CategoriesOfFinancialLiabilitiesAxis" xlink:to="lab_ifrs-full_CategoriesOfFinancialLiabilitiesAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BlockThirtyTwoCuencaDelSuresteMember_019b46bd-0715-75d1-9aa0-4768b4050bd0_terseLabel_en-US" xlink:label="lab_ck0000932782_BlockThirtyTwoCuencaDelSuresteMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Block 32 Cuenca del Sureste</link:label>
    <link:label id="lab_ck0000932782_BlockThirtyTwoCuencaDelSuresteMember_label_en-US" xlink:label="lab_ck0000932782_BlockThirtyTwoCuencaDelSuresteMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Block Thirty Two Cuenca del Sureste [member]</link:label>
    <link:label id="lab_ck0000932782_BlockThirtyTwoCuencaDelSuresteMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockThirtyTwoCuencaDelSuresteMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block thirty two Cuenca del Sureste.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockThirtyTwoCuencaDelSuresteMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockThirtyTwoCuencaDelSuresteMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BlockThirtyTwoCuencaDelSuresteMember" xlink:to="lab_ck0000932782_BlockThirtyTwoCuencaDelSuresteMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherIncomeTaxesAxis_019b46bd-053c-7a8a-bf72-40555a14a3e1_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherIncomeTaxesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Income Taxes [Axis]</link:label>
    <link:label id="lab_ck0000932782_OtherIncomeTaxesAxis_label_en-US" xlink:label="lab_ck0000932782_OtherIncomeTaxesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Income Taxes [Axis]</link:label>
    <link:label id="lab_ck0000932782_OtherIncomeTaxesAxis_documentation_en-US" xlink:label="lab_ck0000932782_OtherIncomeTaxesAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Income Taxes</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherIncomeTaxesAxis" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherIncomeTaxesAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherIncomeTaxesAxis" xlink:to="lab_ck0000932782_OtherIncomeTaxesAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherFinancialsLiabilitiesMember_019b46bd-05e4-74b7-8a01-f70eae9e166d_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherFinancialsLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other financial liabilities</link:label>
    <link:label id="lab_ck0000932782_OtherFinancialsLiabilitiesMember_label_en-US" xlink:label="lab_ck0000932782_OtherFinancialsLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Financials Liabilities [member]</link:label>
    <link:label id="lab_ck0000932782_OtherFinancialsLiabilitiesMember_documentation_en-US" xlink:label="lab_ck0000932782_OtherFinancialsLiabilitiesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Financials Liabilities [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherFinancialsLiabilitiesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherFinancialsLiabilitiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherFinancialsLiabilitiesMember" xlink:to="lab_ck0000932782_OtherFinancialsLiabilitiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityIncorporationStateCountryCode_019b46bd-053c-7101-93cb-b5023170e8e1_terseLabel_en-US" xlink:label="lab_dei_EntityIncorporationStateCountryCode" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Incorporation, State or Country Code</link:label>
    <link:label id="lab_dei_EntityIncorporationStateCountryCode_label_en-US" xlink:label="lab_dei_EntityIncorporationStateCountryCode" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Incorporation, State or Country Code</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityIncorporationStateCountryCode" xlink:to="lab_dei_EntityIncorporationStateCountryCode" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MaturityPeriodFiveMember_019b46bd-05e4-78ca-a331-676685abf2d8_terseLabel_en-US" xlink:label="lab_ck0000932782_MaturityPeriodFiveMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maturity Period Five</link:label>
    <link:label id="lab_ck0000932782_MaturityPeriodFiveMember_label_en-US" xlink:label="lab_ck0000932782_MaturityPeriodFiveMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maturity Period Five [member]</link:label>
    <link:label id="lab_ck0000932782_MaturityPeriodFiveMember_documentation_en-US" xlink:label="lab_ck0000932782_MaturityPeriodFiveMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Maturity period five.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MaturityPeriodFiveMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MaturityPeriodFiveMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MaturityPeriodFiveMember" xlink:to="lab_ck0000932782_MaturityPeriodFiveMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CardenasMoraMember_019b46bd-0715-7c3b-a412-1ead82c715d3_terseLabel_en-US" xlink:label="lab_ck0000932782_CardenasMoraMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">C&#225;rdenas-Mora</link:label>
    <link:label id="lab_ck0000932782_CardenasMoraMember_label_en-US" xlink:label="lab_ck0000932782_CardenasMoraMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cardenas Mora [member]</link:label>
    <link:label id="lab_ck0000932782_CardenasMoraMember_documentation_en-US" xlink:label="lab_ck0000932782_CardenasMoraMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cardenas Mora.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CardenasMoraMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CardenasMoraMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CardenasMoraMember" xlink:to="lab_ck0000932782_CardenasMoraMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEMember_019b46bd-045f-7cb0-8a0a-722c0eaebccf_terseLabel_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE</link:label>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEMember_label_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE [Member]</link:label>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEMember_documentation_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TwentyEightDaysTIIEMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TwentyEightDaysTIIEMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TwentyEightDaysTIIEMember" xlink:to="lab_ck0000932782_TwentyEightDaysTIIEMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InterestExpense_019b46bd-05e4-7e4f-b32f-b507703f37e1_terseLabel_en-US" xlink:label="lab_ifrs-full_InterestExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest cost</link:label>
    <link:label id="lab_ifrs-full_InterestExpense_label_en-US" xlink:label="lab_ifrs-full_InterestExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InterestExpense" xlink:to="lab_ifrs-full_InterestExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfGeographicalAreasLineItems_019b46bd-053c-7722-b1fb-db5c1af35f86_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfGeographicalAreasLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of geographical areas [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfGeographicalAreasLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfGeographicalAreasLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of geographical areas [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfGeographicalAreasLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfGeographicalAreasLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfGeographicalAreasLineItems" xlink:to="lab_ifrs-full_DisclosureOfGeographicalAreasLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BlockSixteenMember_019b46bd-0715-71cb-ab1a-9d8f7169e963_terseLabel_en-US" xlink:label="lab_ck0000932782_BlockSixteenMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Block 16</link:label>
    <link:label id="lab_ck0000932782_BlockSixteenMember_label_en-US" xlink:label="lab_ck0000932782_BlockSixteenMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Block sixteen [member]</link:label>
    <link:label id="lab_ck0000932782_BlockSixteenMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockSixteenMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block sixteen.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockSixteenMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockSixteenMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BlockSixteenMember" xlink:to="lab_ck0000932782_BlockSixteenMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfSubsidiaryEntitiesAndSubsidiaryCompaniesExplanatory_019b46bd-0715-700a-bec8-b0f5c0854fba_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfSubsidiaryEntitiesAndSubsidiaryCompaniesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsidiary Entities and Subsidiary Companies</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfSubsidiaryEntitiesAndSubsidiaryCompaniesExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfSubsidiaryEntitiesAndSubsidiaryCompaniesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Subsidiary Entities And Subsidiary Companies [Text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfSubsidiaryEntitiesAndSubsidiaryCompaniesExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfSubsidiaryEntitiesAndSubsidiaryCompaniesExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The entire disclosure of subsidiary entities and subsidiary companies.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfSubsidiaryEntitiesAndSubsidiaryCompaniesExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfSubsidiaryEntitiesAndSubsidiaryCompaniesExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfSubsidiaryEntitiesAndSubsidiaryCompaniesExplanatory" xlink:to="lab_ck0000932782_DisclosureOfSubsidiaryEntitiesAndSubsidiaryCompaniesExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NuevoPemexGasProcessorComplexMember_019b46bd-0684-7dd3-bda0-a1d1f20b267d_terseLabel_en-US" xlink:label="lab_ck0000932782_NuevoPemexGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Nuevo Pemex Gas Processor Complex</link:label>
    <link:label id="lab_ck0000932782_NuevoPemexGasProcessorComplexMember_label_en-US" xlink:label="lab_ck0000932782_NuevoPemexGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nuevo Pemex Gas Processor Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_NuevoPemexGasProcessorComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_NuevoPemexGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Nuevo pemex gas processor complex.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NuevoPemexGasProcessorComplexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NuevoPemexGasProcessorComplexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NuevoPemexGasProcessorComplexMember" xlink:to="lab_ck0000932782_NuevoPemexGasProcessorComplexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DevelopmentCostIncurredDuringPeriod_019b46bd-05e4-7700-89fc-4704a604c424_terseLabel_en-US" xlink:label="lab_ck0000932782_DevelopmentCostIncurredDuringPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Development cost incurred during the year</link:label>
    <link:label id="lab_ck0000932782_DevelopmentCostIncurredDuringPeriod_label_en-US" xlink:label="lab_ck0000932782_DevelopmentCostIncurredDuringPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Development Cost Incurred During Period</link:label>
    <link:label id="lab_ck0000932782_DevelopmentCostIncurredDuringPeriod_documentation_en-US" xlink:label="lab_ck0000932782_DevelopmentCostIncurredDuringPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Development cost incurred during period.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DevelopmentCostIncurredDuringPeriod" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DevelopmentCostIncurredDuringPeriod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DevelopmentCostIncurredDuringPeriod" xlink:to="lab_ck0000932782_DevelopmentCostIncurredDuringPeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfEquityAbstract_019b46bd-05e5-7b77-a5ad-ea6f8c33fdc3_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure Of Equity [abstract]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfEquityAbstract_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Equity [abstract]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfEquityAbstract_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfEquityAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of equity.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfEquityAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfEquityAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfEquityAbstract" xlink:to="lab_ck0000932782_DisclosureOfEquityAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BlockSeventeenOfTampicoMisantlaMember_019b46bd-0715-7695-b2be-4520872242dc_terseLabel_en-US" xlink:label="lab_ck0000932782_BlockSeventeenOfTampicoMisantlaMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Block 17 of Tampico Misantla</link:label>
    <link:label id="lab_ck0000932782_BlockSeventeenOfTampicoMisantlaMember_label_en-US" xlink:label="lab_ck0000932782_BlockSeventeenOfTampicoMisantlaMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Block seventeen Of Tampico Misantla [member]</link:label>
    <link:label id="lab_ck0000932782_BlockSeventeenOfTampicoMisantlaMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockSeventeenOfTampicoMisantlaMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block seventeen of Tampico Misantla.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockSeventeenOfTampicoMisantlaMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockSeventeenOfTampicoMisantlaMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BlockSeventeenOfTampicoMisantlaMember" xlink:to="lab_ck0000932782_BlockSeventeenOfTampicoMisantlaMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ContributionsAMember_019b46bd-053c-7d71-aa65-81cafbadec5a_terseLabel_en-US" xlink:label="lab_ck0000932782_ContributionsAMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contributions A</link:label>
    <link:label id="lab_ck0000932782_ContributionsAMember_label_en-US" xlink:label="lab_ck0000932782_ContributionsAMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contributions A [member]</link:label>
    <link:label id="lab_ck0000932782_ContributionsAMember_documentation_en-US" xlink:label="lab_ck0000932782_ContributionsAMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contributions A.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ContributionsAMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ContributionsAMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ContributionsAMember" xlink:to="lab_ck0000932782_ContributionsAMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughAppropriationOfRetainedEarnings_019b46bd-053c-74bb-b3e9-77491f7fdddc_terseLabel_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughAppropriationOfRetainedEarnings" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Transfer to accumulated deficit</link:label>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughAppropriationOfRetainedEarnings_label_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughAppropriationOfRetainedEarnings" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (decrease) through appropriation of retained earnings, equity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughAppropriationOfRetainedEarnings" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughAppropriationOfRetainedEarnings"/>
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    <link:label id="lab_ck0000932782_DebtInterestAmount_019b46bd-0684-7f16-9bb6-6a377fcb062e_terseLabel_en-US" xlink:label="lab_ck0000932782_DebtInterestAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest</link:label>
    <link:label id="lab_ck0000932782_DebtInterestAmount_label_en-US" xlink:label="lab_ck0000932782_DebtInterestAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Interest Amount</link:label>
    <link:label id="lab_ck0000932782_DebtInterestAmount_documentation_en-US" xlink:label="lab_ck0000932782_DebtInterestAmount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt interest amount.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DebtInterestAmount" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DebtInterestAmount"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DebtInterestAmount" xlink:to="lab_ck0000932782_DebtInterestAmount" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossRightofuseAssets_019d9d22-d226-735a-8340-69e889c5f868_negatedLabel_en-US" xlink:label="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossRightofuseAssets" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Impairment</link:label>
    <link:label id="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossRightofuseAssets_label_en-US" xlink:label="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossRightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impairment loss recognised in profit or loss, right-of-use assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ImpairmentLossRecognisedInProfitOrLossRightofuseAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ImpairmentLossRecognisedInProfitOrLossRightofuseAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ImpairmentLossRecognisedInProfitOrLossRightofuseAssets" xlink:to="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossRightofuseAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SantuarioElGolpeMember_019b46bd-045f-7ca8-8c79-3b7658af7894_terseLabel_en-US" xlink:label="lab_ck0000932782_SantuarioElGolpeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Santuario El Golpe</link:label>
    <link:label id="lab_ck0000932782_SantuarioElGolpeMember_label_en-US" xlink:label="lab_ck0000932782_SantuarioElGolpeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Santuario y El Golpe [member]</link:label>
    <link:label id="lab_ck0000932782_SantuarioElGolpeMember_documentation_en-US" xlink:label="lab_ck0000932782_SantuarioElGolpeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Santuario y El Golpe.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SantuarioElGolpeMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SantuarioElGolpeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SantuarioElGolpeMember" xlink:to="lab_ck0000932782_SantuarioElGolpeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember_019b46bd-0684-7130-9d7d-9b4284e47196_terseLabel_en-US" xlink:label="lab_ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2028</link:label>
    <link:label id="lab_ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember_019b46bd-0684-7db0-b308-c6941b2bd6c3_verboseLabel_en-US" xlink:label="lab_ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">2028</link:label>
    <link:label id="lab_ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember_label_en-US" xlink:label="lab_ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Later than two years and not later than three years [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember" xlink:to="lab_ifrs-full_LaterThanTwoYearsAndNotLaterThanThreeYearsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_QPIMexicoS.A.DeC.V.Member_019d8a8f-0b09-7784-97cc-cc11ef9bcc7f_terseLabel_en-US" xlink:label="lab_ck0000932782_QPIMexicoS.A.DeC.V.Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">QPI Mexico, S.A. de C.V.</link:label>
    <link:label id="lab_ck0000932782_QPIMexicoS.A.DeC.V.Member_label_en-US" xlink:label="lab_ck0000932782_QPIMexicoS.A.DeC.V.Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">QPI Mexico, S.A. de C.V. [Member]</link:label>
    <link:label id="lab_ck0000932782_QPIMexicoS.A.DeC.V.Member_documentation_en-US" xlink:label="lab_ck0000932782_QPIMexicoS.A.DeC.V.Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">QPI Mexico, S.A. de C.V.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_QPIMexicoS.A.DeC.V.Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_QPIMexicoS.A.DeC.V.Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_QPIMexicoS.A.DeC.V.Member" xlink:to="lab_ck0000932782_QPIMexicoS.A.DeC.V.Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashAndCashEquivalentsAbstract_019b46bd-0684-7264-ae9b-a2dabb8267f9_terseLabel_en-US" xlink:label="lab_ifrs-full_CashAndCashEquivalentsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents [abstract]</link:label>
    <link:label id="lab_ifrs-full_CashAndCashEquivalentsAbstract_label_en-US" xlink:label="lab_ifrs-full_CashAndCashEquivalentsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashAndCashEquivalentsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashAndCashEquivalentsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashAndCashEquivalentsAbstract" xlink:to="lab_ifrs-full_CashAndCashEquivalentsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MexicanGovernmentMember_019b46bd-0715-7d9e-80fd-ef1cfc28b6bd_terseLabel_en-US" xlink:label="lab_ck0000932782_MexicanGovernmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Mexican Government</link:label>
    <link:label id="lab_ck0000932782_MexicanGovernmentMember_label_en-US" xlink:label="lab_ck0000932782_MexicanGovernmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mexican Government [Member]</link:label>
    <link:label id="lab_ck0000932782_MexicanGovernmentMember_documentation_en-US" xlink:label="lab_ck0000932782_MexicanGovernmentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Mexican Government [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MexicanGovernmentMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MexicanGovernmentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MexicanGovernmentMember" xlink:to="lab_ck0000932782_MexicanGovernmentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DiscountRateOverTimeAmountUsedInProvisionAgainstFixedAssets_019b46bd-0460-797c-b122-cfea7d103b99_terseLabel_en-US" xlink:label="lab_ck0000932782_DiscountRateOverTimeAmountUsedInProvisionAgainstFixedAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Discount rate effect in provision against fixed assets</link:label>
    <link:label id="lab_ck0000932782_DiscountRateOverTimeAmountUsedInProvisionAgainstFixedAssets_label_en-US" xlink:label="lab_ck0000932782_DiscountRateOverTimeAmountUsedInProvisionAgainstFixedAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Discount Rate Over Time Amount used in Provision Against Fixed Assets</link:label>
    <link:label id="lab_ck0000932782_DiscountRateOverTimeAmountUsedInProvisionAgainstFixedAssets_documentation_en-US" xlink:label="lab_ck0000932782_DiscountRateOverTimeAmountUsedInProvisionAgainstFixedAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Discount Rate Over Time Amount used in Provision Against Fixed Assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DiscountRateOverTimeAmountUsedInProvisionAgainstFixedAssets" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DiscountRateOverTimeAmountUsedInProvisionAgainstFixedAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DiscountRateOverTimeAmountUsedInProvisionAgainstFixedAssets" xlink:to="lab_ck0000932782_DiscountRateOverTimeAmountUsedInProvisionAgainstFixedAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_019b46bd-053c-79f5-b220-417e19aae6b8_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Others-net</link:label>
    <link:label id="lab_ifrs-full_OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome_label_en-US" xlink:label="lab_ifrs-full_OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other tax effects for reconciliation between accounting profit and tax expense (income)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome" xlink:to="lab_ifrs-full_OtherTaxEffectsForReconciliationBetweenAccountingProfitAndTaxExpenseIncome" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_GovernmentContributionsToEquity_019b46bd-053d-7938-9bf6-09d04ff40ea4_terseLabel_en-US" xlink:label="lab_ck0000932782_GovernmentContributionsToEquity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Mexican Government contributions</link:label>
    <link:label id="lab_ck0000932782_GovernmentContributionsToEquity_label_en-US" xlink:label="lab_ck0000932782_GovernmentContributionsToEquity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Government contributions to equity</link:label>
    <link:label id="lab_ck0000932782_GovernmentContributionsToEquity_documentation_en-US" xlink:label="lab_ck0000932782_GovernmentContributionsToEquity" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Government contributions to equity.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GovernmentContributionsToEquity" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GovernmentContributionsToEquity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_GovernmentContributionsToEquity" xlink:to="lab_ck0000932782_GovernmentContributionsToEquity" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory_019b46bd-0684-730a-9b72-051f8209dc9e_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of right-of-use assets</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of quantitative information about right-of-use assets [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory_019b46bd-0715-74b2-8150-6dd94c8bc158_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Description of accounting policy for fair value measurement [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory" xlink:to="lab_ifrs-full_DescriptionOfAccountingPolicyForFairValueMeasurementExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_019b46bd-05e4-7591-be5b-ef61e7bd376e_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about borrowings [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about borrowings [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable" xlink:to="lab_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ExternalBorrowingsNet_019b46bd-05e4-7eb0-af06-526de45883db_terseLabel_en-US" xlink:label="lab_ck0000932782_ExternalBorrowingsNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">External net debt</link:label>
    <link:label id="lab_ck0000932782_ExternalBorrowingsNet_label_en-US" xlink:label="lab_ck0000932782_ExternalBorrowingsNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">External Borrowings Net</link:label>
    <link:label id="lab_ck0000932782_ExternalBorrowingsNet_documentation_en-US" xlink:label="lab_ck0000932782_ExternalBorrowingsNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">External borrowings net.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ExternalBorrowingsNet" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ExternalBorrowingsNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ExternalBorrowingsNet" xlink:to="lab_ck0000932782_ExternalBorrowingsNet" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_ProvedDevelopedAndUndevelopedReservesNet_019b46bd-0684-7192-8e59-99bb88c3b7ec_periodStartLabel_en-US" xlink:label="lab_srt_ProvedDevelopedAndUndevelopedReservesNet" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance</link:label>
    <link:label id="lab_srt_ProvedDevelopedAndUndevelopedReservesNet_019b46bd-0684-70d1-b85e-5414817445d1_periodEndLabel_en-US" xlink:label="lab_srt_ProvedDevelopedAndUndevelopedReservesNet" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending Balance</link:label>
    <link:label id="lab_srt_ProvedDevelopedAndUndevelopedReservesNet_label_en-US" xlink:label="lab_srt_ProvedDevelopedAndUndevelopedReservesNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Oil and Gas, Proved Reserve, Quantity, Volume</link:label>
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    <link:label id="lab_ck0000932782_IncomeTaxExpenseForExtractionPhase_label_en-US" xlink:label="lab_ck0000932782_IncomeTaxExpenseForExtractionPhase" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income tax expense for extraction phase</link:label>
    <link:label id="lab_ck0000932782_IncomeTaxExpenseForExtractionPhase_documentation_en-US" xlink:label="lab_ck0000932782_IncomeTaxExpenseForExtractionPhase" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Income tax expense for extraction phase.</link:label>
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    <link:label id="lab_ck0000932782_InterestIncomeOnDebtInstrumentsReceived_019b46bd-0684-7a22-8f07-ea78c9e3a287_terseLabel_en-US" xlink:label="lab_ck0000932782_InterestIncomeOnDebtInstrumentsReceived" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payment received</link:label>
    <link:label id="lab_ck0000932782_InterestIncomeOnDebtInstrumentsReceived_label_en-US" xlink:label="lab_ck0000932782_InterestIncomeOnDebtInstrumentsReceived" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest income on debt instruments received</link:label>
    <link:label id="lab_ck0000932782_InterestIncomeOnDebtInstrumentsReceived_documentation_en-US" xlink:label="lab_ck0000932782_InterestIncomeOnDebtInstrumentsReceived" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interest income on debt instruments received</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterestIncomeOnDebtInstrumentsReceived" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterestIncomeOnDebtInstrumentsReceived"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterestIncomeOnDebtInstrumentsReceived" xlink:to="lab_ck0000932782_InterestIncomeOnDebtInstrumentsReceived" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEPlus270BasisPointsMember_019b46bd-053c-7cca-8823-e49b0e28af89_terseLabel_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEPlus270BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE Plus 270 Basis Points</link:label>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEPlus270BasisPointsMember_label_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEPlus270BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE Plus 270 Basis Points [Member]</link:label>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEPlus270BasisPointsMember_documentation_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEPlus270BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE Plus 270 Basis Points</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TwentyEightDaysTIIEPlus270BasisPointsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TwentyEightDaysTIIEPlus270BasisPointsMember"/>
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    <link:label id="lab_ck0000932782_Pipelines1Member_019b46bd-05e4-7b58-ab52-437e7d689fa8_terseLabel_en-US" xlink:label="lab_ck0000932782_Pipelines1Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pipelines</link:label>
    <link:label id="lab_ck0000932782_Pipelines1Member_label_en-US" xlink:label="lab_ck0000932782_Pipelines1Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pipelines 1 [Member]</link:label>
    <link:label id="lab_ck0000932782_Pipelines1Member_documentation_en-US" xlink:label="lab_ck0000932782_Pipelines1Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Pipelines.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_Pipelines1Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_Pipelines1Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_Pipelines1Member" xlink:to="lab_ck0000932782_Pipelines1Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForEnvironmentRelatedExpenseExplanatory_019b46bd-0715-7c45-9bdf-c5366fbf729a_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForEnvironmentRelatedExpenseExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Renewable fuels obligation</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForEnvironmentRelatedExpenseExplanatory_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForEnvironmentRelatedExpenseExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Description of accounting policy for environment related expense [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DescriptionOfAccountingPolicyForEnvironmentRelatedExpenseExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DescriptionOfAccountingPolicyForEnvironmentRelatedExpenseExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DescriptionOfAccountingPolicyForEnvironmentRelatedExpenseExplanatory" xlink:to="lab_ifrs-full_DescriptionOfAccountingPolicyForEnvironmentRelatedExpenseExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_StatementOfChangesInEquityLineItems_019b46bd-0684-7532-b78b-bcf00178dd17_terseLabel_en-US" xlink:label="lab_ifrs-full_StatementOfChangesInEquityLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement [line items]</link:label>
    <link:label id="lab_ifrs-full_StatementOfChangesInEquityLineItems_label_en-US" xlink:label="lab_ifrs-full_StatementOfChangesInEquityLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of changes in equity [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_StatementOfChangesInEquityLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_StatementOfChangesInEquityLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_StatementOfChangesInEquityLineItems" xlink:to="lab_ifrs-full_StatementOfChangesInEquityLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InvoicePaymentTerms_019b46bd-0715-7050-8bf8-d262e8d8b106_terseLabel_en-US" xlink:label="lab_ck0000932782_InvoicePaymentTerms" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Invoice payment terms</link:label>
    <link:label id="lab_ck0000932782_InvoicePaymentTerms_label_en-US" xlink:label="lab_ck0000932782_InvoicePaymentTerms" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Invoice Payment Terms</link:label>
    <link:label id="lab_ck0000932782_InvoicePaymentTerms_documentation_en-US" xlink:label="lab_ck0000932782_InvoicePaymentTerms" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Invoice Payment Terms</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InvoicePaymentTerms" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InvoicePaymentTerms"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InvoicePaymentTerms" xlink:to="lab_ck0000932782_InvoicePaymentTerms" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeAttributableToAbstract_019b46bd-0684-7fda-9e1e-a93ae2efdf38_terseLabel_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeAttributableToAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Comprehensive (loss) income:</link:label>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeAttributableToAbstract_label_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeAttributableToAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comprehensive income attributable to [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncomeAttributableToAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComprehensiveIncomeAttributableToAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ComprehensiveIncomeAttributableToAbstract" xlink:to="lab_ifrs-full_ComprehensiveIncomeAttributableToAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AccumulatedEffectOfActuarialGainsAndLossesMember_019b46bd-0715-7046-9f4e-8a4bdaa855d8_terseLabel_en-US" xlink:label="lab_ck0000932782_AccumulatedEffectOfActuarialGainsAndLossesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accumulated effect of actuarial gains and losses</link:label>
    <link:label id="lab_ck0000932782_AccumulatedEffectOfActuarialGainsAndLossesMember_label_en-US" xlink:label="lab_ck0000932782_AccumulatedEffectOfActuarialGainsAndLossesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated effect of actuarial gains and losses [Member]</link:label>
    <link:label id="lab_ck0000932782_AccumulatedEffectOfActuarialGainsAndLossesMember_documentation_en-US" xlink:label="lab_ck0000932782_AccumulatedEffectOfActuarialGainsAndLossesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Accumulated effect of actuarial gains and losses [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AccumulatedEffectOfActuarialGainsAndLossesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AccumulatedEffectOfActuarialGainsAndLossesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AccumulatedEffectOfActuarialGainsAndLossesMember" xlink:to="lab_ck0000932782_AccumulatedEffectOfActuarialGainsAndLossesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LineOfCredit1_019b46bd-0715-71dc-ac95-6d567efbe333_terseLabel_en-US" xlink:label="lab_ck0000932782_LineOfCredit1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of credit</link:label>
    <link:label id="lab_ck0000932782_LineOfCredit1_label_en-US" xlink:label="lab_ck0000932782_LineOfCredit1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line Of Credit 1</link:label>
    <link:label id="lab_ck0000932782_LineOfCredit1_documentation_en-US" xlink:label="lab_ck0000932782_LineOfCredit1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount borrowed under the credit facility as of the balance sheet date.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LineOfCredit1" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LineOfCredit1"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LineOfCredit1" xlink:to="lab_ck0000932782_LineOfCredit1" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfGeographicalAreasTable_019b46bd-053c-7b38-bfdc-21974efaadcf_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfGeographicalAreasTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of geographical areas [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfGeographicalAreasTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfGeographicalAreasTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of geographical areas [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfGeographicalAreasTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfGeographicalAreasTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfGeographicalAreasTable" xlink:to="lab_ifrs-full_DisclosureOfGeographicalAreasTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughOtherContributionsByOwners_019b46bd-0684-768a-b4bc-6c8bd4202534_terseLabel_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughOtherContributionsByOwners" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase in Certificates of Contribution &#8220;A&#8221;</link:label>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughOtherContributionsByOwners_019b46bd-0684-736f-9187-dc4ba6782ce2_verboseLabel_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughOtherContributionsByOwners" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Equity contributions</link:label>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughOtherContributionsByOwners_label_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughOtherContributionsByOwners" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase through other contributions by owners, equity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughOtherContributionsByOwners" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughOtherContributionsByOwners"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncreaseDecreaseThroughOtherContributionsByOwners" xlink:to="lab_ifrs-full_IncreaseDecreaseThroughOtherContributionsByOwners" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfProvisionsForSundryCreditorsTextBlock_019b46bd-0684-7ce0-b9bc-31af36249f9d_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfProvisionsForSundryCreditorsTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provisions For Sundry Creditors</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfProvisionsForSundryCreditorsTextBlock_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfProvisionsForSundryCreditorsTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of provisions for sundry creditors [Text Block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfProvisionsForSundryCreditorsTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfProvisionsForSundryCreditorsTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of provisions for sundry creditors.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfProvisionsForSundryCreditorsTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfProvisionsForSundryCreditorsTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfProvisionsForSundryCreditorsTextBlock" xlink:to="lab_ck0000932782_DisclosureOfProvisionsForSundryCreditorsTextBlock" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_IncomeTaxesExcludingProfitSharingDuties_019b46bd-05e4-7b82-997c-7b95557aa91c_terseLabel_en-US" xlink:label="lab_ck0000932782_IncomeTaxesExcludingProfitSharingDuties" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income tax</link:label>
    <link:label id="lab_ck0000932782_IncomeTaxesExcludingProfitSharingDuties_label_en-US" xlink:label="lab_ck0000932782_IncomeTaxesExcludingProfitSharingDuties" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income taxes excluding profit sharing duties</link:label>
    <link:label id="lab_ck0000932782_IncomeTaxesExcludingProfitSharingDuties_documentation_en-US" xlink:label="lab_ck0000932782_IncomeTaxesExcludingProfitSharingDuties" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Income taxes excluding profit sharing duties</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncomeTaxesExcludingProfitSharingDuties" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncomeTaxesExcludingProfitSharingDuties"/>
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    <link:label id="lab_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember_019b46bd-05e4-7be0-8619-1fd0f96424a9_terseLabel_en-US" xlink:label="lab_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">FVTPL</link:label>
    <link:label id="lab_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember_label_en-US" xlink:label="lab_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial assets at fair value through profit or loss, category [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember" xlink:to="lab_ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_FinanceIncomeMember_documentation_en-US" xlink:label="lab_ck0000932782_FinanceIncomeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Finance income.</link:label>
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    <link:label id="lab_ck0000932782_OtherProductsMember_019b46bd-0684-7d2f-bd1e-3d0c5105326c_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherProductsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_ck0000932782_OtherProductsMember_label_en-US" xlink:label="lab_ck0000932782_OtherProductsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Products [member]</link:label>
    <link:label id="lab_ck0000932782_OtherProductsMember_documentation_en-US" xlink:label="lab_ck0000932782_OtherProductsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other products.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherProductsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherProductsMember"/>
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    <link:label id="lab_ck0000932782_ContingentLiabilitiesForLegalProceedings_documentation_en-US" xlink:label="lab_ck0000932782_ContingentLiabilitiesForLegalProceedings" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contingent liabilities for legal proceedings.</link:label>
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    <link:label id="lab_ck0000932782_FiveToSevenYearMember_documentation_en-US" xlink:label="lab_ck0000932782_FiveToSevenYearMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Five to seven year.</link:label>
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    <link:label id="lab_ck0000932782_LesseeLeasingArrangementsLeaseTerm_019b46bd-0684-720d-8d70-a63c57b699c9_terseLabel_en-US" xlink:label="lab_ck0000932782_LesseeLeasingArrangementsLeaseTerm" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated useful life</link:label>
    <link:label id="lab_ck0000932782_LesseeLeasingArrangementsLeaseTerm_label_en-US" xlink:label="lab_ck0000932782_LesseeLeasingArrangementsLeaseTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee Leasing Arrangements Lease Term</link:label>
    <link:label id="lab_ck0000932782_LesseeLeasingArrangementsLeaseTerm_documentation_en-US" xlink:label="lab_ck0000932782_LesseeLeasingArrangementsLeaseTerm" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee leasing arrangements lease term.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LesseeLeasingArrangementsLeaseTerm" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LesseeLeasingArrangementsLeaseTerm"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LesseeLeasingArrangementsLeaseTerm" xlink:to="lab_ck0000932782_LesseeLeasingArrangementsLeaseTerm" xlink:type="arc" order="1"/>
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    <link:label id="lab_currency_MXN_label_en-US" xlink:label="lab_currency_MXN" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mexico, Pesos</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_currency_MXN" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_MXN"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_currency_MXN" xlink:to="lab_currency_MXN" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LowerThan91OctaneGasolineMember_019b46bd-05e4-7ac4-bc90-aed8b52dac9b_terseLabel_en-US" xlink:label="lab_ck0000932782_LowerThan91OctaneGasolineMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lower Than 91 Octane Gasoline</link:label>
    <link:label id="lab_ck0000932782_LowerThan91OctaneGasolineMember_label_en-US" xlink:label="lab_ck0000932782_LowerThan91OctaneGasolineMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lower Than 91 Octane Gasoline [Member]</link:label>
    <link:label id="lab_ck0000932782_LowerThan91OctaneGasolineMember_documentation_en-US" xlink:label="lab_ck0000932782_LowerThan91OctaneGasolineMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lower Than 91 Octane Gasoline</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LowerThan91OctaneGasolineMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LowerThan91OctaneGasolineMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LowerThan91OctaneGasolineMember" xlink:to="lab_ck0000932782_LowerThan91OctaneGasolineMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OgarrioFieldMember_019b46bd-053d-7a2c-96c1-aab55ca20412_terseLabel_en-US" xlink:label="lab_ck0000932782_OgarrioFieldMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ogarrio</link:label>
    <link:label id="lab_ck0000932782_OgarrioFieldMember_label_en-US" xlink:label="lab_ck0000932782_OgarrioFieldMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ogarrio Field [member]</link:label>
    <link:label id="lab_ck0000932782_OgarrioFieldMember_documentation_en-US" xlink:label="lab_ck0000932782_OgarrioFieldMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ogarrio field.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OgarrioFieldMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OgarrioFieldMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OgarrioFieldMember" xlink:to="lab_ck0000932782_OgarrioFieldMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SpecialTaxOnProductionAndServicesIEPSTax_019b46bd-05e4-755f-ab67-3c5e93470353_terseLabel_en-US" xlink:label="lab_ck0000932782_SpecialTaxOnProductionAndServicesIEPSTax" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Special Tax on Production and Services</link:label>
    <link:label id="lab_ck0000932782_SpecialTaxOnProductionAndServicesIEPSTax_label_en-US" xlink:label="lab_ck0000932782_SpecialTaxOnProductionAndServicesIEPSTax" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Special Tax on Production and Services (IEPS Tax)</link:label>
    <link:label id="lab_ck0000932782_SpecialTaxOnProductionAndServicesIEPSTax_documentation_en-US" xlink:label="lab_ck0000932782_SpecialTaxOnProductionAndServicesIEPSTax" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Special tax on production and services (IEPS tax).</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SpecialTaxOnProductionAndServicesIEPSTax" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SpecialTaxOnProductionAndServicesIEPSTax"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SpecialTaxOnProductionAndServicesIEPSTax" xlink:to="lab_ck0000932782_SpecialTaxOnProductionAndServicesIEPSTax" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OilAndFuelProductionMember_019d8b15-acb4-710f-aac4-1a5b07105cf7_terseLabel_en-US" xlink:label="lab_ck0000932782_OilAndFuelProductionMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Oil and fuel production</link:label>
    <link:label id="lab_ck0000932782_OilAndFuelProductionMember_label_en-US" xlink:label="lab_ck0000932782_OilAndFuelProductionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Oil And Fuel Production [Member]</link:label>
    <link:label id="lab_ck0000932782_OilAndFuelProductionMember_documentation_en-US" xlink:label="lab_ck0000932782_OilAndFuelProductionMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Oil And Fuel Production</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OilAndFuelProductionMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OilAndFuelProductionMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OilAndFuelProductionMember" xlink:to="lab_ck0000932782_OilAndFuelProductionMember" xlink:type="arc" order="1"/>
    <link:label id="lab_currency_MXV_019b46bd-05e4-794b-abae-eeb9abb9ac18_terseLabel_en-US" xlink:label="lab_currency_MXV" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">UDIs</link:label>
    <link:label id="lab_currency_MXV_019b46bd-05e4-755f-98fb-d98a17533cd3_verboseLabel_en-US" xlink:label="lab_currency_MXV" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">UDI</link:label>
    <link:label id="lab_currency_MXV_label_en-US" xlink:label="lab_currency_MXV" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mexican Unidad de Inversion (UDI) (funds code)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_currency_MXV" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_MXV"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_currency_MXV" xlink:to="lab_currency_MXV" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfIncomeTaxesTable_019b46bd-0684-7021-9bd7-3321c3fc8f57_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfIncomeTaxesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure Of Income Taxes [table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfIncomeTaxesTable_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfIncomeTaxesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Income Taxes [table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfIncomeTaxesTable_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfIncomeTaxesTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule disclosing information related to income taxes.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfIncomeTaxesTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfIncomeTaxesTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfIncomeTaxesTable" xlink:to="lab_ck0000932782_DisclosureOfIncomeTaxesTable" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_DocumentFiscalPeriodFocus_019b46bd-053c-7f69-8ae4-99b53f244f08_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Fiscal Period Focus</link:label>
    <link:label id="lab_dei_DocumentFiscalPeriodFocus_label_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Fiscal Period Focus</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentFiscalPeriodFocus" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFiscalPeriodFocus"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalPeriodFocus" xlink:to="lab_dei_DocumentFiscalPeriodFocus" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ActuarialAssumptionOfBasicBasketForActivePersonnelMember_019b46bd-0715-7e15-a894-ba1c872d7731_terseLabel_en-US" xlink:label="lab_ck0000932782_ActuarialAssumptionOfBasicBasketForActivePersonnelMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rate of increase in basic basket for active personnel</link:label>
    <link:label id="lab_ck0000932782_ActuarialAssumptionOfBasicBasketForActivePersonnelMember_label_en-US" xlink:label="lab_ck0000932782_ActuarialAssumptionOfBasicBasketForActivePersonnelMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Actuarial assumption of basic basket for active personnel [member]</link:label>
    <link:label id="lab_ck0000932782_ActuarialAssumptionOfBasicBasketForActivePersonnelMember_documentation_en-US" xlink:label="lab_ck0000932782_ActuarialAssumptionOfBasicBasketForActivePersonnelMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Actuarial assumption of basic basket for active personnel.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ActuarialAssumptionOfBasicBasketForActivePersonnelMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ActuarialAssumptionOfBasicBasketForActivePersonnelMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ActuarialAssumptionOfBasicBasketForActivePersonnelMember" xlink:to="lab_ck0000932782_ActuarialAssumptionOfBasicBasketForActivePersonnelMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CrudoLigeroMarinoMember_019b46bd-0715-7f4b-ad4a-e5d2a1c8b7ba_terseLabel_en-US" xlink:label="lab_ck0000932782_CrudoLigeroMarinoMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Crudo Ligero Marino</link:label>
    <link:label id="lab_ck0000932782_CrudoLigeroMarinoMember_label_en-US" xlink:label="lab_ck0000932782_CrudoLigeroMarinoMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Crudo Ligero Marino [Member]</link:label>
    <link:label id="lab_ck0000932782_CrudoLigeroMarinoMember_documentation_en-US" xlink:label="lab_ck0000932782_CrudoLigeroMarinoMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Crudo Ligero Marino.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CrudoLigeroMarinoMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CrudoLigeroMarinoMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CrudoLigeroMarinoMember" xlink:to="lab_ck0000932782_CrudoLigeroMarinoMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_Assets_019b46bd-0715-75be-828f-0f6b57207d93_totalLabel_en-US" xlink:label="lab_ifrs-full_Assets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total assets</link:label>
    <link:label id="lab_ifrs-full_Assets_label_en-US" xlink:label="lab_ifrs-full_Assets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Assets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Assets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Assets" xlink:to="lab_ifrs-full_Assets" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EightPointSevenFiveZeroPercentNotesDueTwoThousandTwentyNineMember_019b46bd-0684-7db3-8c70-14cddefed61b_terseLabel_en-US" xlink:label="lab_ck0000932782_EightPointSevenFiveZeroPercentNotesDueTwoThousandTwentyNineMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">8.750% Notes due 2029</link:label>
    <link:label id="lab_ck0000932782_EightPointSevenFiveZeroPercentNotesDueTwoThousandTwentyNineMember_label_en-US" xlink:label="lab_ck0000932782_EightPointSevenFiveZeroPercentNotesDueTwoThousandTwentyNineMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Eight Point Seven Five Zero Percent Notes Due Two Thousand Twenty Nine [Member]</link:label>
    <link:label id="lab_ck0000932782_EightPointSevenFiveZeroPercentNotesDueTwoThousandTwentyNineMember_documentation_en-US" xlink:label="lab_ck0000932782_EightPointSevenFiveZeroPercentNotesDueTwoThousandTwentyNineMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Eight Point Seven Five Zero Percent Notes Due Two Thousand Twenty Nine</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EightPointSevenFiveZeroPercentNotesDueTwoThousandTwentyNineMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EightPointSevenFiveZeroPercentNotesDueTwoThousandTwentyNineMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EightPointSevenFiveZeroPercentNotesDueTwoThousandTwentyNineMember" xlink:to="lab_ck0000932782_EightPointSevenFiveZeroPercentNotesDueTwoThousandTwentyNineMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MexicanBondsOutstandingAmount_019b46bd-0715-704c-8c02-f913bd7785ff_periodStartLabel_en-US" xlink:label="lab_ck0000932782_MexicanBondsOutstandingAmount" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance as of the beginning of the year</link:label>
    <link:label id="lab_ck0000932782_MexicanBondsOutstandingAmount_019b46bd-0715-7aae-b467-2f0ba584a004_periodEndLabel_en-US" xlink:label="lab_ck0000932782_MexicanBondsOutstandingAmount" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance at the end of the year</link:label>
    <link:label id="lab_ck0000932782_MexicanBondsOutstandingAmount_label_en-US" xlink:label="lab_ck0000932782_MexicanBondsOutstandingAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mexican Bonds Outstanding Amount</link:label>
    <link:label id="lab_ck0000932782_MexicanBondsOutstandingAmount_documentation_en-US" xlink:label="lab_ck0000932782_MexicanBondsOutstandingAmount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Mexican bonds outstanding amount.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MexicanBondsOutstandingAmount" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MexicanBondsOutstandingAmount"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MexicanBondsOutstandingAmount" xlink:to="lab_ck0000932782_MexicanBondsOutstandingAmount" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FinancingReceivableIndividuallyEvaluatedForImpairment1_019b46bd-0715-7ff6-8191-59f818bb9bc3_terseLabel_en-US" xlink:label="lab_ck0000932782_FinancingReceivableIndividuallyEvaluatedForImpairment1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing receivable individually evaluated for impairment</link:label>
    <link:label id="lab_ck0000932782_FinancingReceivableIndividuallyEvaluatedForImpairment1_label_en-US" xlink:label="lab_ck0000932782_FinancingReceivableIndividuallyEvaluatedForImpairment1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable Individually Evaluated For Impairment 1</link:label>
    <link:label id="lab_ck0000932782_FinancingReceivableIndividuallyEvaluatedForImpairment1_documentation_en-US" xlink:label="lab_ck0000932782_FinancingReceivableIndividuallyEvaluatedForImpairment1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financing receivable individually evaluated for impairment</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FinancingReceivableIndividuallyEvaluatedForImpairment1" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FinancingReceivableIndividuallyEvaluatedForImpairment1"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FinancingReceivableIndividuallyEvaluatedForImpairment1" xlink:to="lab_ck0000932782_FinancingReceivableIndividuallyEvaluatedForImpairment1" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ChucMember_019b46bd-0460-7720-aacc-52749d7caa2b_terseLabel_en-US" xlink:label="lab_ck0000932782_ChucMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Chuc</link:label>
    <link:label id="lab_ck0000932782_ChucMember_label_en-US" xlink:label="lab_ck0000932782_ChucMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Chuc [Member]</link:label>
    <link:label id="lab_ck0000932782_ChucMember_documentation_en-US" xlink:label="lab_ck0000932782_ChucMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Chuc.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ChucMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ChucMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ChucMember" xlink:to="lab_ck0000932782_ChucMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EighteenCordillerasMexicanasMember_019b46bd-05e4-7af9-b69e-3eeac1fe1e1e_terseLabel_en-US" xlink:label="lab_ck0000932782_EighteenCordillerasMexicanasMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Eighteen, Cordilleras Mexicanas</link:label>
    <link:label id="lab_ck0000932782_EighteenCordillerasMexicanasMember_label_en-US" xlink:label="lab_ck0000932782_EighteenCordillerasMexicanasMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Eighteen, Cordilleras Mexicanas [member]</link:label>
    <link:label id="lab_ck0000932782_EighteenCordillerasMexicanasMember_documentation_en-US" xlink:label="lab_ck0000932782_EighteenCordillerasMexicanasMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Eighteen, Cordilleras Mexicanas.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EighteenCordillerasMexicanasMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EighteenCordillerasMexicanasMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EighteenCordillerasMexicanasMember" xlink:to="lab_ck0000932782_EighteenCordillerasMexicanasMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TypeOfFinancingArrangementAxis_019b46bd-05e5-7b0b-85ab-1ae2bc6ce6cc_terseLabel_en-US" xlink:label="lab_ck0000932782_TypeOfFinancingArrangementAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Type Of Financing Arrangement [Axis]</link:label>
    <link:label id="lab_ck0000932782_TypeOfFinancingArrangementAxis_label_en-US" xlink:label="lab_ck0000932782_TypeOfFinancingArrangementAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Type Of Financing Arrangement [Axis]</link:label>
    <link:label id="lab_ck0000932782_TypeOfFinancingArrangementAxis_documentation_en-US" xlink:label="lab_ck0000932782_TypeOfFinancingArrangementAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Type Of Financing Arrangement [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TypeOfFinancingArrangementAxis" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TypeOfFinancingArrangementAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TypeOfFinancingArrangementAxis" xlink:to="lab_ck0000932782_TypeOfFinancingArrangementAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TypesOfInterestRatesAxis_019b46bd-053c-7e1f-aebb-642e9de4e8c6_terseLabel_en-US" xlink:label="lab_ifrs-full_TypesOfInterestRatesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Types of interest rates [axis]</link:label>
    <link:label id="lab_ifrs-full_TypesOfInterestRatesAxis_label_en-US" xlink:label="lab_ifrs-full_TypesOfInterestRatesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Types of interest rates [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfInterestRatesAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfInterestRatesAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TypesOfInterestRatesAxis" xlink:to="lab_ifrs-full_TypesOfInterestRatesAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_Revenue_019b46bd-0684-7498-b3aa-142aba137678_totalLabel_en-US" xlink:label="lab_ifrs-full_Revenue" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total revenues</link:label>
    <link:label id="lab_ifrs-full_Revenue_019b46bd-0684-790a-85ad-b05f175772b4_netLabel_en-US" xlink:label="lab_ifrs-full_Revenue" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Net sales</link:label>
    <link:label id="lab_ifrs-full_Revenue_label_en-US" xlink:label="lab_ifrs-full_Revenue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Revenue" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Revenue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Revenue" xlink:to="lab_ifrs-full_Revenue" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LicensesMember_019b46bd-05e4-7196-8382-eeefbece589f_terseLabel_en-US" xlink:label="lab_ck0000932782_LicensesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Licenses</link:label>
    <link:label id="lab_ck0000932782_LicensesMember_label_en-US" xlink:label="lab_ck0000932782_LicensesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Licenses [member]</link:label>
    <link:label id="lab_ck0000932782_LicensesMember_documentation_en-US" xlink:label="lab_ck0000932782_LicensesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Licenses.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LicensesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LicensesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LicensesMember" xlink:to="lab_ck0000932782_LicensesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityAddressCityOrTown_019b46bd-0715-785e-8fda-b2e75c65d4e9_terseLabel_en-US" xlink:label="lab_dei_EntityAddressCityOrTown" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Address, City or Town</link:label>
    <link:label id="lab_dei_EntityAddressCityOrTown_label_en-US" xlink:label="lab_dei_EntityAddressCityOrTown" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Address, City or Town</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressCityOrTown" xlink:to="lab_dei_EntityAddressCityOrTown" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MoreThanTenYearsMember_019b46bd-0684-7b5a-91b8-872129a94f9b_terseLabel_en-US" xlink:label="lab_ck0000932782_MoreThanTenYearsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">More than 10 years</link:label>
    <link:label id="lab_ck0000932782_MoreThanTenYearsMember_label_en-US" xlink:label="lab_ck0000932782_MoreThanTenYearsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">More Than Ten Years [member]</link:label>
    <link:label id="lab_ck0000932782_MoreThanTenYearsMember_documentation_en-US" xlink:label="lab_ck0000932782_MoreThanTenYearsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">More than ten years.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MoreThanTenYearsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MoreThanTenYearsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MoreThanTenYearsMember" xlink:to="lab_ck0000932782_MoreThanTenYearsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DerivativeFinancialInstrumentsAndDebtPortfolioToParallelShiftBasisPoints_019b46bd-0715-7f1c-96e2-2b22c79e0ee2_terseLabel_en-US" xlink:label="lab_ck0000932782_DerivativeFinancialInstrumentsAndDebtPortfolioToParallelShiftBasisPoints" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">DFIs and debt portfolio to parallel shift basis points</link:label>
    <link:label id="lab_ck0000932782_DerivativeFinancialInstrumentsAndDebtPortfolioToParallelShiftBasisPoints_label_en-US" xlink:label="lab_ck0000932782_DerivativeFinancialInstrumentsAndDebtPortfolioToParallelShiftBasisPoints" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">derivative financial instruments and debt portfolio to parallel shift basis points</link:label>
    <link:label id="lab_ck0000932782_DerivativeFinancialInstrumentsAndDebtPortfolioToParallelShiftBasisPoints_documentation_en-US" xlink:label="lab_ck0000932782_DerivativeFinancialInstrumentsAndDebtPortfolioToParallelShiftBasisPoints" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">derivative financial instruments and debt portfolio to parallel shift basis points.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DerivativeFinancialInstrumentsAndDebtPortfolioToParallelShiftBasisPoints" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DerivativeFinancialInstrumentsAndDebtPortfolioToParallelShiftBasisPoints"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DerivativeFinancialInstrumentsAndDebtPortfolioToParallelShiftBasisPoints" xlink:to="lab_ck0000932782_DerivativeFinancialInstrumentsAndDebtPortfolioToParallelShiftBasisPoints" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LicenseContractsMember_019b46bd-05e4-7e94-b65e-df9737ce3968_terseLabel_en-US" xlink:label="lab_ck0000932782_LicenseContractsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">License Contracts</link:label>
    <link:label id="lab_ck0000932782_LicenseContractsMember_label_en-US" xlink:label="lab_ck0000932782_LicenseContractsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">License Contracts [Member]</link:label>
    <link:label id="lab_ck0000932782_LicenseContractsMember_documentation_en-US" xlink:label="lab_ck0000932782_LicenseContractsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">License Contracts</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LicenseContractsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LicenseContractsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LicenseContractsMember" xlink:to="lab_ck0000932782_LicenseContractsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EmployeeBenefitsNonCurrent_019b46bd-05e5-7bd6-b4d9-e3be1cf0e8ad_terseLabel_en-US" xlink:label="lab_ck0000932782_EmployeeBenefitsNonCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employee benefits</link:label>
    <link:label id="lab_ck0000932782_EmployeeBenefitsNonCurrent_label_en-US" xlink:label="lab_ck0000932782_EmployeeBenefitsNonCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Benefits Non Current</link:label>
    <link:label id="lab_ck0000932782_EmployeeBenefitsNonCurrent_documentation_en-US" xlink:label="lab_ck0000932782_EmployeeBenefitsNonCurrent" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Employee benefits non current.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EmployeeBenefitsNonCurrent" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EmployeeBenefitsNonCurrent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EmployeeBenefitsNonCurrent" xlink:to="lab_ck0000932782_EmployeeBenefitsNonCurrent" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory_019b46bd-0684-73b6-ad19-970c27a55c05_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Retirement and Former Employee Benefits Granted</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of information about key management personnel [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory" xlink:to="lab_ifrs-full_DisclosureOfInformationAboutKeyManagementPersonnelExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AdditionsFromAcquisitionsInvestmentPropertyNet_019dbaf4-5f8c-73dc-9e31-d4dfb452bddf_terseLabel_en-US" xlink:label="lab_ck0000932782_AdditionsFromAcquisitionsInvestmentPropertyNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquisitions</link:label>
    <link:label id="lab_ck0000932782_AdditionsFromAcquisitionsInvestmentPropertyNet_label_en-US" xlink:label="lab_ck0000932782_AdditionsFromAcquisitionsInvestmentPropertyNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additions From Acquisitions Investment Property, Net</link:label>
    <link:label id="lab_ck0000932782_AdditionsFromAcquisitionsInvestmentPropertyNet_documentation_en-US" xlink:label="lab_ck0000932782_AdditionsFromAcquisitionsInvestmentPropertyNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Additions From Acquisitions Investment Property, Net</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AdditionsFromAcquisitionsInvestmentPropertyNet" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AdditionsFromAcquisitionsInvestmentPropertyNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AdditionsFromAcquisitionsInvestmentPropertyNet" xlink:to="lab_ck0000932782_AdditionsFromAcquisitionsInvestmentPropertyNet" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsTable_019b46bd-0715-7408-9b78-c466290ef25a_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of quantitative information about right-of-use assets [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of quantitative information about right-of-use assets [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsTable" xlink:to="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsTable" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityEmergingGrowthCompany_019b46bd-053c-70c1-96bc-14db67baed70_terseLabel_en-US" xlink:label="lab_dei_EntityEmergingGrowthCompany" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Emerging Growth Company</link:label>
    <link:label id="lab_dei_EntityEmergingGrowthCompany_label_en-US" xlink:label="lab_dei_EntityEmergingGrowthCompany" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Emerging Growth Company</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityEmergingGrowthCompany" xlink:to="lab_dei_EntityEmergingGrowthCompany" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PercentageOfContractualArea_019b46bd-053c-7f91-82f8-96649e6dc0b3_terseLabel_en-US" xlink:label="lab_ck0000932782_PercentageOfContractualArea" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of contractual area</link:label>
    <link:label id="lab_ck0000932782_PercentageOfContractualArea_label_en-US" xlink:label="lab_ck0000932782_PercentageOfContractualArea" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage of contractual area</link:label>
    <link:label id="lab_ck0000932782_PercentageOfContractualArea_documentation_en-US" xlink:label="lab_ck0000932782_PercentageOfContractualArea" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of contractual area.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PercentageOfContractualArea" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PercentageOfContractualArea"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PercentageOfContractualArea" xlink:to="lab_ck0000932782_PercentageOfContractualArea" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfImpairmentLossRecognisedOrReversedTable_019b46bd-0715-7996-bfd8-05d4e34d7238_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfImpairmentLossRecognisedOrReversedTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of impairment loss recognised or reversed for cash-generating unit [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfImpairmentLossRecognisedOrReversedTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfImpairmentLossRecognisedOrReversedTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of impairment loss recognised or reversed for cash-generating unit [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfImpairmentLossRecognisedOrReversedTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfImpairmentLossRecognisedOrReversedTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfImpairmentLossRecognisedOrReversedTable" xlink:to="lab_ifrs-full_DisclosureOfImpairmentLossRecognisedOrReversedTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_RevolvingCreditCommittedToMitigateLiquidityRisk_019b46bd-045f-7181-bc36-869be94a20ae_terseLabel_en-US" xlink:label="lab_ck0000932782_RevolvingCreditCommittedToMitigateLiquidityRisk" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving credit committed to mitigate liquidity risk</link:label>
    <link:label id="lab_ck0000932782_RevolvingCreditCommittedToMitigateLiquidityRisk_label_en-US" xlink:label="lab_ck0000932782_RevolvingCreditCommittedToMitigateLiquidityRisk" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revolving credit committed to mitigate liquidity risk</link:label>
    <link:label id="lab_ck0000932782_RevolvingCreditCommittedToMitigateLiquidityRisk_documentation_en-US" xlink:label="lab_ck0000932782_RevolvingCreditCommittedToMitigateLiquidityRisk" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Revolving credit committed to mitigate liquidity risk.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RevolvingCreditCommittedToMitigateLiquidityRisk" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RevolvingCreditCommittedToMitigateLiquidityRisk"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_RevolvingCreditCommittedToMitigateLiquidityRisk" xlink:to="lab_ck0000932782_RevolvingCreditCommittedToMitigateLiquidityRisk" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_GeneralExpensesWithThirdParties_019b46bd-0684-7801-8e06-88b81e8a8dba_terseLabel_en-US" xlink:label="lab_ck0000932782_GeneralExpensesWithThirdParties" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">General expenses with third-parties</link:label>
    <link:label id="lab_ck0000932782_GeneralExpensesWithThirdParties_label_en-US" xlink:label="lab_ck0000932782_GeneralExpensesWithThirdParties" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">General Expenses With Third Parties</link:label>
    <link:label id="lab_ck0000932782_GeneralExpensesWithThirdParties_documentation_en-US" xlink:label="lab_ck0000932782_GeneralExpensesWithThirdParties" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">General expenses with third-parties.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GeneralExpensesWithThirdParties" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GeneralExpensesWithThirdParties"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_GeneralExpensesWithThirdParties" xlink:to="lab_ck0000932782_GeneralExpensesWithThirdParties" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherCostsExpensesNet_019b46bd-053c-7fc2-b06e-7e00f41a7d4f_verboseLabel_en-US" xlink:label="lab_ck0000932782_OtherCostsExpensesNet" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other costs and expenses</link:label>
    <link:label id="lab_ck0000932782_OtherCostsExpensesNet_label_en-US" xlink:label="lab_ck0000932782_OtherCostsExpensesNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Costs Expenses Net</link:label>
    <link:label id="lab_ck0000932782_OtherCostsExpensesNet_documentation_en-US" xlink:label="lab_ck0000932782_OtherCostsExpensesNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other costs expenses net.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherCostsExpensesNet" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherCostsExpensesNet"/>
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    <link:label id="lab_ck0000932782_PrincipalAmountOfPromissoryNote_019b46bd-0684-7ede-8671-9447f2e9c3ad_terseLabel_en-US" xlink:label="lab_ck0000932782_PrincipalAmountOfPromissoryNote" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Principal amount of promissory note</link:label>
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    <link:label id="lab_ck0000932782_FuelOilMember_documentation_en-US" xlink:label="lab_ck0000932782_FuelOilMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fuel oil.</link:label>
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    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionOneSeptember2025Member_documentation_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionOneSeptember2025Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position One, September 2025</link:label>
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    <link:label id="lab_ifrs-full_RightofuseAssetsMember_label_en-US" xlink:label="lab_ifrs-full_RightofuseAssetsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Right-of-use assets [member]</link:label>
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    <link:label id="lab_ck0000932782_FederalBudgetMember_label_en-US" xlink:label="lab_ck0000932782_FederalBudgetMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Federal budget [member]</link:label>
    <link:label id="lab_ck0000932782_FederalBudgetMember_documentation_en-US" xlink:label="lab_ck0000932782_FederalBudgetMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Federal budget.</link:label>
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    <link:label id="lab_ck0000932782_ArenqueGasProcessorComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_ArenqueGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Arenque Gas Processor Complex</link:label>
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    <link:label id="lab_dei_EntityAddressPostalZipCode_019b46bd-0684-76ba-ad68-7dc509cba49b_terseLabel_en-US" xlink:label="lab_dei_EntityAddressPostalZipCode" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Address, Postal Zip Code</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ReservesRevisionsAndTimingChanges" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ReservesRevisionsAndTimingChanges"/>
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    <link:label id="lab_ck0000932782_Amortizedcostondebtinstrumentsissued_documentation_en-US" xlink:label="lab_ck0000932782_Amortizedcostondebtinstrumentsissued" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">AmortizedCostOnDebtInstrumentsIssued.</link:label>
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    <link:label id="lab_ck0000932782_InterestRateOptionsPositionTwoMember_label_en-US" xlink:label="lab_ck0000932782_InterestRateOptionsPositionTwoMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Rate Options Position Two [Member]</link:label>
    <link:label id="lab_ck0000932782_InterestRateOptionsPositionTwoMember_documentation_en-US" xlink:label="lab_ck0000932782_InterestRateOptionsPositionTwoMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interest Rate Options Position Two</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterestRateOptionsPositionTwoMember" xlink:to="lab_ck0000932782_InterestRateOptionsPositionTwoMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FinancialAssetsAtAmortisedCost_019b46bd-05e4-704b-a84f-d055f319536c_terseLabel_en-US" xlink:label="lab_ifrs-full_FinancialAssetsAtAmortisedCost" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial assets at amortised cost</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialAssetsAtAmortisedCost" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssetsAtAmortisedCost"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FinancialAssetsAtAmortisedCost" xlink:to="lab_ifrs-full_FinancialAssetsAtAmortisedCost" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AllowanceAccountAbstract_019b46bd-0684-74d6-87ac-d150742f5504_terseLabel_en-US" xlink:label="lab_ck0000932782_AllowanceAccountAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Allowance account for trials in progress</link:label>
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    <link:label id="lab_ck0000932782_AllowanceAccountAbstract_documentation_en-US" xlink:label="lab_ck0000932782_AllowanceAccountAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Allowance Account</link:label>
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    <link:label id="lab_ck0000932782_ActuarialAssumptionOfMedicalCostTrendRatesIncreaseDecreaseOfOnePercentageMember_019b46bd-0684-72fd-8d50-f37227e1d51a_terseLabel_en-US" xlink:label="lab_ck0000932782_ActuarialAssumptionOfMedicalCostTrendRatesIncreaseDecreaseOfOnePercentageMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Medical services of increase or decrease of one percentage point</link:label>
    <link:label id="lab_ck0000932782_ActuarialAssumptionOfMedicalCostTrendRatesIncreaseDecreaseOfOnePercentageMember_label_en-US" xlink:label="lab_ck0000932782_ActuarialAssumptionOfMedicalCostTrendRatesIncreaseDecreaseOfOnePercentageMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Actuarial Assumption of Medical Cost Trend Rates Increase Decrease of One Percentage [member]</link:label>
    <link:label id="lab_ck0000932782_ActuarialAssumptionOfMedicalCostTrendRatesIncreaseDecreaseOfOnePercentageMember_documentation_en-US" xlink:label="lab_ck0000932782_ActuarialAssumptionOfMedicalCostTrendRatesIncreaseDecreaseOfOnePercentageMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Actuarial assumption of medical cost trend rates increase decrease of one percentage.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ActuarialAssumptionOfMedicalCostTrendRatesIncreaseDecreaseOfOnePercentageMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ActuarialAssumptionOfMedicalCostTrendRatesIncreaseDecreaseOfOnePercentageMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ActuarialAssumptionOfMedicalCostTrendRatesIncreaseDecreaseOfOnePercentageMember" xlink:to="lab_ck0000932782_ActuarialAssumptionOfMedicalCostTrendRatesIncreaseDecreaseOfOnePercentageMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BhpBillitonMember_019b46bd-05e4-77ea-863d-77f39d1c54c0_terseLabel_en-US" xlink:label="lab_ck0000932782_BhpBillitonMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">BHP Billiton</link:label>
    <link:label id="lab_ck0000932782_BhpBillitonMember_label_en-US" xlink:label="lab_ck0000932782_BhpBillitonMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">BHP Billiton Member</link:label>
    <link:label id="lab_ck0000932782_BhpBillitonMember_documentation_en-US" xlink:label="lab_ck0000932782_BhpBillitonMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">BHP Billiton.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BhpBillitonMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BhpBillitonMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BhpBillitonMember" xlink:to="lab_ck0000932782_BhpBillitonMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CangrejeraEthyleneProcessorComplexMember_019b46bd-0715-7ef5-814f-30b450a80d35_terseLabel_en-US" xlink:label="lab_ck0000932782_CangrejeraEthyleneProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cangrejera Ethylene Complex</link:label>
    <link:label id="lab_ck0000932782_CangrejeraEthyleneProcessorComplexMember_label_en-US" xlink:label="lab_ck0000932782_CangrejeraEthyleneProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cangrejera Ethylene Processor Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_CangrejeraEthyleneProcessorComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_CangrejeraEthyleneProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cangrejera ethylene processor complex.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CangrejeraEthyleneProcessorComplexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CangrejeraEthyleneProcessorComplexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CangrejeraEthyleneProcessorComplexMember" xlink:to="lab_ck0000932782_CangrejeraEthyleneProcessorComplexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NinetyOneDaysTIEERateMember_019b46bd-0715-71a4-b622-aa25b344baf9_terseLabel_en-US" xlink:label="lab_ck0000932782_NinetyOneDaysTIEERateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ninety One Days TIEE Rate</link:label>
    <link:label id="lab_ck0000932782_NinetyOneDaysTIEERateMember_label_en-US" xlink:label="lab_ck0000932782_NinetyOneDaysTIEERateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ninety One Days TIEE Rate [Member]</link:label>
    <link:label id="lab_ck0000932782_NinetyOneDaysTIEERateMember_documentation_en-US" xlink:label="lab_ck0000932782_NinetyOneDaysTIEERateMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ninety One Days TIEE Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NinetyOneDaysTIEERateMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NinetyOneDaysTIEERateMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NinetyOneDaysTIEERateMember" xlink:to="lab_ck0000932782_NinetyOneDaysTIEERateMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InventoriesVariations_019b46bd-0684-7e96-b4aa-e8c90aa16cc3_terseLabel_en-US" xlink:label="lab_ck0000932782_InventoriesVariations" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventory variations</link:label>
    <link:label id="lab_ck0000932782_InventoriesVariations_label_en-US" xlink:label="lab_ck0000932782_InventoriesVariations" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventories variations</link:label>
    <link:label id="lab_ck0000932782_InventoriesVariations_documentation_en-US" xlink:label="lab_ck0000932782_InventoriesVariations" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Inventories variations.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InventoriesVariations" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InventoriesVariations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InventoriesVariations" xlink:to="lab_ck0000932782_InventoriesVariations" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EffectOfIncreaseDecreaseInVolumeOfCrudeOil_019b46bd-053c-7620-bc72-328013be4def_negatedTerseLabel_en-US" xlink:label="lab_ck0000932782_EffectOfIncreaseDecreaseInVolumeOfCrudeOil" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Effect of increase decrease in volume of crude oil</link:label>
    <link:label id="lab_ck0000932782_EffectOfIncreaseDecreaseInVolumeOfCrudeOil_label_en-US" xlink:label="lab_ck0000932782_EffectOfIncreaseDecreaseInVolumeOfCrudeOil" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effect Of Increase Decrease In Volume Of Crude Oil</link:label>
    <link:label id="lab_ck0000932782_EffectOfIncreaseDecreaseInVolumeOfCrudeOil_documentation_en-US" xlink:label="lab_ck0000932782_EffectOfIncreaseDecreaseInVolumeOfCrudeOil" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Effect of increase decrease in volume of crude oil.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EffectOfIncreaseDecreaseInVolumeOfCrudeOil" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EffectOfIncreaseDecreaseInVolumeOfCrudeOil"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EffectOfIncreaseDecreaseInVolumeOfCrudeOil" xlink:to="lab_ck0000932782_EffectOfIncreaseDecreaseInVolumeOfCrudeOil" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InterestRateOptionsPositionOneMember_019b46bd-0684-7dc0-b13c-6e4ea6775625_verboseLabel_en-US" xlink:label="lab_ck0000932782_InterestRateOptionsPositionOneMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Buy Cap, Sell Floor on floating in U.S. dollar SOFR 1M</link:label>
    <link:label id="lab_ck0000932782_InterestRateOptionsPositionOneMember_label_en-US" xlink:label="lab_ck0000932782_InterestRateOptionsPositionOneMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Rate Options Position One [Member]</link:label>
    <link:label id="lab_ck0000932782_InterestRateOptionsPositionOneMember_documentation_en-US" xlink:label="lab_ck0000932782_InterestRateOptionsPositionOneMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interest rate options position one.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterestRateOptionsPositionOneMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterestRateOptionsPositionOneMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterestRateOptionsPositionOneMember" xlink:to="lab_ck0000932782_InterestRateOptionsPositionOneMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CommodityPriceRiskMember_019b46bd-045f-7732-9e59-9d2f8606ea43_terseLabel_en-US" xlink:label="lab_ifrs-full_CommodityPriceRiskMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commodity price risk</link:label>
    <link:label id="lab_ifrs-full_CommodityPriceRiskMember_label_en-US" xlink:label="lab_ifrs-full_CommodityPriceRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commodity price risk [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CommodityPriceRiskMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CommodityPriceRiskMember"/>
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    <link:label id="lab_ck0000932782_DeferredTaxAssetsTaxCredits_019b46bd-0684-77f0-9d21-9ebc9f2fee74_terseLabel_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsTaxCredits" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tax credits</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxAssetsTaxCredits_label_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsTaxCredits" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred tax assets tax credits</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxAssetsTaxCredits_documentation_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsTaxCredits" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred tax assets tax credits</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DeferredTaxAssetsTaxCredits" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DeferredTaxAssetsTaxCredits"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DeferredTaxAssetsTaxCredits" xlink:to="lab_ck0000932782_DeferredTaxAssetsTaxCredits" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InterestReceivedOnClassifiedAsFinancingActivities_019b46bd-05e4-79a3-8582-94446af7e843_terseLabel_en-US" xlink:label="lab_ck0000932782_InterestReceivedOnClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest collected from the Mexican Government</link:label>
    <link:label id="lab_ck0000932782_InterestReceivedOnClassifiedAsFinancingActivities_label_en-US" xlink:label="lab_ck0000932782_InterestReceivedOnClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest received on classified as financing activities</link:label>
    <link:label id="lab_ck0000932782_InterestReceivedOnClassifiedAsFinancingActivities_documentation_en-US" xlink:label="lab_ck0000932782_InterestReceivedOnClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">.Concept not in agreement with IAS 7.33</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterestReceivedOnClassifiedAsFinancingActivities" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterestReceivedOnClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterestReceivedOnClassifiedAsFinancingActivities" xlink:to="lab_ck0000932782_InterestReceivedOnClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AverageGasPrice_019b46bd-0684-7c8f-b1c4-003c573e9187_terseLabel_en-US" xlink:label="lab_ck0000932782_AverageGasPrice" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average gas price (USD per thousands cubic feet)</link:label>
    <link:label id="lab_ck0000932782_AverageGasPrice_label_en-US" xlink:label="lab_ck0000932782_AverageGasPrice" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Average Gas Price</link:label>
    <link:label id="lab_ck0000932782_AverageGasPrice_documentation_en-US" xlink:label="lab_ck0000932782_AverageGasPrice" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Average gas price.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AverageGasPrice" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AverageGasPrice"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AverageGasPrice" xlink:to="lab_ck0000932782_AverageGasPrice" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DFIsNotIdentifiedMember_019b46bd-0715-7afa-974e-afa8257f2e7e_terseLabel_en-US" xlink:label="lab_ck0000932782_DFIsNotIdentifiedMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">DFIs not identified</link:label>
    <link:label id="lab_ck0000932782_DFIsNotIdentifiedMember_label_en-US" xlink:label="lab_ck0000932782_DFIsNotIdentifiedMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">DFIs Not Identified [Member]</link:label>
    <link:label id="lab_ck0000932782_DFIsNotIdentifiedMember_documentation_en-US" xlink:label="lab_ck0000932782_DFIsNotIdentifiedMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">DFIs Not Identified</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DFIsNotIdentifiedMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DFIsNotIdentifiedMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DFIsNotIdentifiedMember" xlink:to="lab_ck0000932782_DFIsNotIdentifiedMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DeferredTaxAssetsLoansAndAdvances_019b46bd-053d-716b-af4b-46f92a0dea5a_terseLabel_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsLoansAndAdvances" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Advance payments from clients</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxAssetsLoansAndAdvances_label_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsLoansAndAdvances" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred tax assets loans and advances</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxAssetsLoansAndAdvances_documentation_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsLoansAndAdvances" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred tax assets loans and advances.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DeferredTaxAssetsLoansAndAdvances" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DeferredTaxAssetsLoansAndAdvances"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DeferredTaxAssetsLoansAndAdvances" xlink:to="lab_ck0000932782_DeferredTaxAssetsLoansAndAdvances" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FairValueOfTransferredFinancialAssetsAssociatedFinancialLiabilitiesThatAreNotDerecognisedInTheirEntirety_019b46bd-053c-7b56-92e7-f3e42241b696_terseLabel_en-US" xlink:label="lab_ifrs-full_FairValueOfTransferredFinancialAssetsAssociatedFinancialLiabilitiesThatAreNotDerecognisedInTheirEntirety" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair value of transferred financial assets and associated financial liabilities, net</link:label>
    <link:label id="lab_ifrs-full_FairValueOfTransferredFinancialAssetsAssociatedFinancialLiabilitiesThatAreNotDerecognisedInTheirEntirety_label_en-US" xlink:label="lab_ifrs-full_FairValueOfTransferredFinancialAssetsAssociatedFinancialLiabilitiesThatAreNotDerecognisedInTheirEntirety" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair value of transferred financial assets (associated financial liabilities) that are not derecognised in their entirety</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FairValueOfTransferredFinancialAssetsAssociatedFinancialLiabilitiesThatAreNotDerecognisedInTheirEntirety" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FairValueOfTransferredFinancialAssetsAssociatedFinancialLiabilitiesThatAreNotDerecognisedInTheirEntirety"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FairValueOfTransferredFinancialAssetsAssociatedFinancialLiabilitiesThatAreNotDerecognisedInTheirEntirety" xlink:to="lab_ifrs-full_FairValueOfTransferredFinancialAssetsAssociatedFinancialLiabilitiesThatAreNotDerecognisedInTheirEntirety" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProceedsFromCurrentBorrowings_019b46bd-053c-726b-b1b5-544b0df3e9af_terseLabel_en-US" xlink:label="lab_ifrs-full_ProceedsFromCurrentBorrowings" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from revolving credit lines</link:label>
    <link:label id="lab_ifrs-full_ProceedsFromCurrentBorrowings_label_en-US" xlink:label="lab_ifrs-full_ProceedsFromCurrentBorrowings" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from current borrowings</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromCurrentBorrowings" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromCurrentBorrowings"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProceedsFromCurrentBorrowings" xlink:to="lab_ifrs-full_ProceedsFromCurrentBorrowings" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NumberOfPrepaidSwapsEnteredInto_019b46bd-0684-7f06-881d-32f49e951886_terseLabel_en-US" xlink:label="lab_ck0000932782_NumberOfPrepaidSwapsEnteredInto" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of prepaid swaps</link:label>
    <link:label id="lab_ck0000932782_NumberOfPrepaidSwapsEnteredInto_label_en-US" xlink:label="lab_ck0000932782_NumberOfPrepaidSwapsEnteredInto" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Prepaid Swaps Entered Into</link:label>
    <link:label id="lab_ck0000932782_NumberOfPrepaidSwapsEnteredInto_documentation_en-US" xlink:label="lab_ck0000932782_NumberOfPrepaidSwapsEnteredInto" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number Of Prepaid Swaps Entered Into</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NumberOfPrepaidSwapsEnteredInto" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NumberOfPrepaidSwapsEnteredInto"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NumberOfPrepaidSwapsEnteredInto" xlink:to="lab_ck0000932782_NumberOfPrepaidSwapsEnteredInto" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FolapeMember_019b46bd-05e4-7a41-a5d5-9d9bc1f51adb_terseLabel_en-US" xlink:label="lab_ck0000932782_FolapeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">FOLAPE</link:label>
    <link:label id="lab_ck0000932782_FolapeMember_label_en-US" xlink:label="lab_ck0000932782_FolapeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">FOLAPE [Member]</link:label>
    <link:label id="lab_ck0000932782_FolapeMember_documentation_en-US" xlink:label="lab_ck0000932782_FolapeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">FOLAPE.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FolapeMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FolapeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FolapeMember" xlink:to="lab_ck0000932782_FolapeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OperatingLossIncomeAfterWelfareOilDuty_019ce6cd-263c-7cc9-833e-a5e13b1da368_totalLabel_en-US" xlink:label="lab_ck0000932782_OperatingLossIncomeAfterWelfareOilDuty" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Operating (loss) income after Welfare oil duty</link:label>
    <link:label id="lab_ck0000932782_OperatingLossIncomeAfterWelfareOilDuty_019ce6cb-c552-7390-b58a-ebfdb3fbec38_terseLabel_en-US" xlink:label="lab_ck0000932782_OperatingLossIncomeAfterWelfareOilDuty" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating (loss) income after Welfare oil duty</link:label>
    <link:label id="lab_ck0000932782_OperatingLossIncomeAfterWelfareOilDuty_label_en-US" xlink:label="lab_ck0000932782_OperatingLossIncomeAfterWelfareOilDuty" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating (Loss) Income After Welfare Oil Duty</link:label>
    <link:label id="lab_ck0000932782_OperatingLossIncomeAfterWelfareOilDuty_documentation_en-US" xlink:label="lab_ck0000932782_OperatingLossIncomeAfterWelfareOilDuty" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Operating (Loss) Income After Welfare Oil Duty</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OperatingLossIncomeAfterWelfareOilDuty" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OperatingLossIncomeAfterWelfareOilDuty"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OperatingLossIncomeAfterWelfareOilDuty" xlink:to="lab_ck0000932782_OperatingLossIncomeAfterWelfareOilDuty" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_WellsMember_019b46bd-0715-7360-845b-d939b4988955_terseLabel_en-US" xlink:label="lab_ck0000932782_WellsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Wells</link:label>
    <link:label id="lab_ck0000932782_WellsMember_label_en-US" xlink:label="lab_ck0000932782_WellsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Wells [member]</link:label>
    <link:label id="lab_ck0000932782_WellsMember_documentation_en-US" xlink:label="lab_ck0000932782_WellsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Wells.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_WellsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_WellsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_WellsMember" xlink:to="lab_ck0000932782_WellsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LessThan91OctanesGasolineMember_019b46bd-0684-747d-aa60-c998da57d9a6_terseLabel_en-US" xlink:label="lab_ck0000932782_LessThan91OctanesGasolineMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Less Than 91 Octanes Gasoline</link:label>
    <link:label id="lab_ck0000932782_LessThan91OctanesGasolineMember_label_en-US" xlink:label="lab_ck0000932782_LessThan91OctanesGasolineMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Less Than 91 Octanes Gasoline [Member]</link:label>
    <link:label id="lab_ck0000932782_LessThan91OctanesGasolineMember_documentation_en-US" xlink:label="lab_ck0000932782_LessThan91OctanesGasolineMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Less than 91 octanes gasoline.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LessThan91OctanesGasolineMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LessThan91OctanesGasolineMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LessThan91OctanesGasolineMember" xlink:to="lab_ck0000932782_LessThan91OctanesGasolineMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherNoncurrentAssetsPaymentsInAdvance_019b46bd-05e5-7f94-acb7-38529479d2fb_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherNoncurrentAssetsPaymentsInAdvance" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payments in advance</link:label>
    <link:label id="lab_ck0000932782_OtherNoncurrentAssetsPaymentsInAdvance_label_en-US" xlink:label="lab_ck0000932782_OtherNoncurrentAssetsPaymentsInAdvance" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Noncurrent Assets Payments In Advance</link:label>
    <link:label id="lab_ck0000932782_OtherNoncurrentAssetsPaymentsInAdvance_documentation_en-US" xlink:label="lab_ck0000932782_OtherNoncurrentAssetsPaymentsInAdvance" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other noncurrent assets payments in advance.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherNoncurrentAssetsPaymentsInAdvance" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherNoncurrentAssetsPaymentsInAdvance"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherNoncurrentAssetsPaymentsInAdvance" xlink:to="lab_ck0000932782_OtherNoncurrentAssetsPaymentsInAdvance" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SixPointEightFourZeroPercentNotesDueTwoThousandThirtyMember_019b46bd-05e4-75ee-85b2-748e975de101_terseLabel_en-US" xlink:label="lab_ck0000932782_SixPointEightFourZeroPercentNotesDueTwoThousandThirtyMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">6.840% Notes due 2030</link:label>
    <link:label id="lab_ck0000932782_SixPointEightFourZeroPercentNotesDueTwoThousandThirtyMember_label_en-US" xlink:label="lab_ck0000932782_SixPointEightFourZeroPercentNotesDueTwoThousandThirtyMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Six Point Eight Four Zero Percent Notes Due Two Thousand Thirty [Member]</link:label>
    <link:label id="lab_ck0000932782_SixPointEightFourZeroPercentNotesDueTwoThousandThirtyMember_documentation_en-US" xlink:label="lab_ck0000932782_SixPointEightFourZeroPercentNotesDueTwoThousandThirtyMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Six Point Eight Four Zero Percent Notes Due Two Thousand Thirty [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SixPointEightFourZeroPercentNotesDueTwoThousandThirtyMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SixPointEightFourZeroPercentNotesDueTwoThousandThirtyMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SixPointEightFourZeroPercentNotesDueTwoThousandThirtyMember" xlink:to="lab_ck0000932782_SixPointEightFourZeroPercentNotesDueTwoThousandThirtyMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PemexLogisticsMember_019b46bd-05e4-7ea2-bb30-9d338b37651c_terseLabel_en-US" xlink:label="lab_ck0000932782_PemexLogisticsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Logistics as a part of Other Operating Subsidiary Companies (formerly Pemex Logistics)</link:label>
    <link:label id="lab_ck0000932782_PemexLogisticsMember_label_en-US" xlink:label="lab_ck0000932782_PemexLogisticsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pemex Logistics [member]</link:label>
    <link:label id="lab_ck0000932782_PemexLogisticsMember_documentation_en-US" xlink:label="lab_ck0000932782_PemexLogisticsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Pemex logistics.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PemexLogisticsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PemexLogisticsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PemexLogisticsMember" xlink:to="lab_ck0000932782_PemexLogisticsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss_019b46bd-0684-7518-b1e5-3c3ba74cbb21_terseLabel_en-US" xlink:label="lab_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign exchange</link:label>
    <link:label id="lab_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss_label_en-US" xlink:label="lab_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign exchange gain (loss)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss" xlink:to="lab_ifrs-full_GainsLossesOnExchangeDifferencesOnTranslationRecognisedInProfitOrLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain_019b46bd-053c-74c3-855b-4aff988bcaf4_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of property, plant and equipment [domain]</link:label>
    <link:label id="lab_ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain_label_en-US" xlink:label="lab_ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of property, plant and equipment [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain" xlink:to="lab_ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfDebtTable_019b46bd-0684-773e-ba0d-631a73558df3_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfDebtTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure Of Debt [table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfDebtTable_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfDebtTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Debt [table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfDebtTable_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfDebtTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of debt [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfDebtTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfDebtTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfDebtTable" xlink:to="lab_ck0000932782_DisclosureOfDebtTable" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityAddressCountry_019b46bd-0715-7477-8665-c8f641cc5795_terseLabel_en-US" xlink:label="lab_dei_EntityAddressCountry" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Address, Country</link:label>
    <link:label id="lab_dei_EntityAddressCountry_label_en-US" xlink:label="lab_dei_EntityAddressCountry" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Address, Country</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCountry" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCountry"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressCountry" xlink:to="lab_dei_EntityAddressCountry" xlink:type="arc" order="1"/>
    <link:label id="lab_currency_EUR_019b46bd-053c-7b90-9c75-573c743aaa09_verboseLabel_en-US" xlink:label="lab_currency_EUR" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Euro</link:label>
    <link:label id="lab_currency_EUR_019b46bd-053c-70ca-afa5-5d840dbfbcd3_terseLabel_en-US" xlink:label="lab_currency_EUR" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Euro</link:label>
    <link:label id="lab_currency_EUR_label_en-US" xlink:label="lab_currency_EUR" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Euro Member Countries, Euro</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_currency_EUR" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_EUR"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_currency_EUR" xlink:to="lab_currency_EUR" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CancelationsOfLeaseLiabilitiesAdjustments_019b46bd-0684-7453-9fed-021f895e5847_verboseLabel_en-US" xlink:label="lab_ck0000932782_CancelationsOfLeaseLiabilitiesAdjustments" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Cancellations</link:label>
    <link:label id="lab_ck0000932782_CancelationsOfLeaseLiabilitiesAdjustments_label_en-US" xlink:label="lab_ck0000932782_CancelationsOfLeaseLiabilitiesAdjustments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cancelations Of Lease Liabilities Adjustments</link:label>
    <link:label id="lab_ck0000932782_CancelationsOfLeaseLiabilitiesAdjustments_documentation_en-US" xlink:label="lab_ck0000932782_CancelationsOfLeaseLiabilitiesAdjustments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cancelations of lease liabilities adjustments.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CancelationsOfLeaseLiabilitiesAdjustments" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CancelationsOfLeaseLiabilitiesAdjustments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CancelationsOfLeaseLiabilitiesAdjustments" xlink:to="lab_ck0000932782_CancelationsOfLeaseLiabilitiesAdjustments" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitTable_019b46bd-0684-735a-ae78-f9e428138dac_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of information for impairment loss recognised or reversed for individual asset or cash-generating unit [table]</link:label>
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    <link:label id="lab_ck0000932782_AverageLengthOfObligation_label_en-US" xlink:label="lab_ck0000932782_AverageLengthOfObligation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Average length of obligation</link:label>
    <link:label id="lab_ck0000932782_AverageLengthOfObligation_documentation_en-US" xlink:label="lab_ck0000932782_AverageLengthOfObligation" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Average length of obligation.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AverageLengthOfObligation" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AverageLengthOfObligation"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AverageLengthOfObligation" xlink:to="lab_ck0000932782_AverageLengthOfObligation" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MorelosPetrochemicalComplexMember_019b46bd-0684-709c-9126-4c206e46e4e9_terseLabel_en-US" xlink:label="lab_ck0000932782_MorelosPetrochemicalComplexMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Morelos Petrochemical Complex</link:label>
    <link:label id="lab_ck0000932782_MorelosPetrochemicalComplexMember_label_en-US" xlink:label="lab_ck0000932782_MorelosPetrochemicalComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Morelos Petrochemical Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_MorelosPetrochemicalComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_MorelosPetrochemicalComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Morelos Petrochemical Complex</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MorelosPetrochemicalComplexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MorelosPetrochemicalComplexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MorelosPetrochemicalComplexMember" xlink:to="lab_ck0000932782_MorelosPetrochemicalComplexMember" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_SixPointSevenFivePercentGuaranteedNotesDueTwoThousandFortySevenMember_label_en-US" xlink:label="lab_ck0000932782_SixPointSevenFivePercentGuaranteedNotesDueTwoThousandFortySevenMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Six point seven five percent guaranteed notes due two thousand forty seven [member]</link:label>
    <link:label id="lab_ck0000932782_SixPointSevenFivePercentGuaranteedNotesDueTwoThousandFortySevenMember_documentation_en-US" xlink:label="lab_ck0000932782_SixPointSevenFivePercentGuaranteedNotesDueTwoThousandFortySevenMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Six point seven five percent guaranteed notes due two thousand forty seven.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SixPointSevenFivePercentGuaranteedNotesDueTwoThousandFortySevenMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SixPointSevenFivePercentGuaranteedNotesDueTwoThousandFortySevenMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SixPointSevenFivePercentGuaranteedNotesDueTwoThousandFortySevenMember" xlink:to="lab_ck0000932782_SixPointSevenFivePercentGuaranteedNotesDueTwoThousandFortySevenMember" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_OtherIncomeTaxesAndDutiesMember_label_en-US" xlink:label="lab_ck0000932782_OtherIncomeTaxesAndDutiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Income Taxes and Duties [Member]</link:label>
    <link:label id="lab_ck0000932782_OtherIncomeTaxesAndDutiesMember_documentation_en-US" xlink:label="lab_ck0000932782_OtherIncomeTaxesAndDutiesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Income Taxes and Duties</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherIncomeTaxesAndDutiesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherIncomeTaxesAndDutiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherIncomeTaxesAndDutiesMember" xlink:to="lab_ck0000932782_OtherIncomeTaxesAndDutiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProvedPropertiesMember_019b46bd-0684-7786-8e09-9f409ebe5311_terseLabel_en-US" xlink:label="lab_ck0000932782_ProvedPropertiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proved Properties</link:label>
    <link:label id="lab_ck0000932782_ProvedPropertiesMember_label_en-US" xlink:label="lab_ck0000932782_ProvedPropertiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proved Properties [Member]</link:label>
    <link:label id="lab_ck0000932782_ProvedPropertiesMember_documentation_en-US" xlink:label="lab_ck0000932782_ProvedPropertiesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Proved properties.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProvedPropertiesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProvedPropertiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProvedPropertiesMember" xlink:to="lab_ck0000932782_ProvedPropertiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SixPointSevenZeroZeroPercentNotesDueTwoThousandThirtyTwoMember_019b46bd-0684-7135-9f4a-460749efd1ff_terseLabel_en-US" xlink:label="lab_ck0000932782_SixPointSevenZeroZeroPercentNotesDueTwoThousandThirtyTwoMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">6.700% Notes due 2032</link:label>
    <link:label id="lab_ck0000932782_SixPointSevenZeroZeroPercentNotesDueTwoThousandThirtyTwoMember_label_en-US" xlink:label="lab_ck0000932782_SixPointSevenZeroZeroPercentNotesDueTwoThousandThirtyTwoMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Six Point Seven Zero Zero Percent Notes Due Two Thousand Thirty Two [Member]</link:label>
    <link:label id="lab_ck0000932782_SixPointSevenZeroZeroPercentNotesDueTwoThousandThirtyTwoMember_documentation_en-US" xlink:label="lab_ck0000932782_SixPointSevenZeroZeroPercentNotesDueTwoThousandThirtyTwoMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Six Point Seven Zero Zero Percent Notes Due Two Thousand Thirty Two [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SixPointSevenZeroZeroPercentNotesDueTwoThousandThirtyTwoMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SixPointSevenZeroZeroPercentNotesDueTwoThousandThirtyTwoMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SixPointSevenZeroZeroPercentNotesDueTwoThousandThirtyTwoMember" xlink:to="lab_ck0000932782_SixPointSevenZeroZeroPercentNotesDueTwoThousandThirtyTwoMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InterestReceivedClassifiedAsInvestingActivities_019b46bd-0684-7e86-ba90-6a77ba561083_negatedLabel_en-US" xlink:label="lab_ifrs-full_InterestReceivedClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Interests received from bonds</link:label>
    <link:label id="lab_ifrs-full_InterestReceivedClassifiedAsInvestingActivities_label_en-US" xlink:label="lab_ifrs-full_InterestReceivedClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest received, classified as investing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestReceivedClassifiedAsInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestReceivedClassifiedAsInvestingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InterestReceivedClassifiedAsInvestingActivities" xlink:to="lab_ifrs-full_InterestReceivedClassifiedAsInvestingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_DocumentAnnualReport_019b46bd-053c-7cf8-bbec-c4ff7f7cbd1b_terseLabel_en-US" xlink:label="lab_dei_DocumentAnnualReport" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Annual Report</link:label>
    <link:label id="lab_dei_DocumentAnnualReport_label_en-US" xlink:label="lab_dei_DocumentAnnualReport" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Annual Report</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentAnnualReport" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentAnnualReport"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentAnnualReport" xlink:to="lab_dei_DocumentAnnualReport" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProvisionsForTrailsInProcessCancellation_019b46bd-0715-7383-96cf-b3c28e5b850e_negatedLabel_en-US" xlink:label="lab_ck0000932782_ProvisionsForTrailsInProcessCancellation" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Provision cancellation</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForTrailsInProcessCancellation_label_en-US" xlink:label="lab_ck0000932782_ProvisionsForTrailsInProcessCancellation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provisions For Trails In Process Cancellation</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForTrailsInProcessCancellation_documentation_en-US" xlink:label="lab_ck0000932782_ProvisionsForTrailsInProcessCancellation" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Provisions For Trails In Process Cancellation</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProvisionsForTrailsInProcessCancellation" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProvisionsForTrailsInProcessCancellation"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProvisionsForTrailsInProcessCancellation" xlink:to="lab_ck0000932782_ProvisionsForTrailsInProcessCancellation" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset_019b46bd-045f-7610-afe6-06ccd561bf19_negatedLabel_en-US" xlink:label="lab_ifrs-full_ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Assets of the plan during the year</link:label>
    <link:label id="lab_ifrs-full_ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset_019b46bd-045f-7492-8172-6875333c3b28_terseLabel_en-US" xlink:label="lab_ifrs-full_ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Return on plan assets</link:label>
    <link:label id="lab_ifrs-full_ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset_label_en-US" xlink:label="lab_ifrs-full_ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Decrease (increase) in net defined benefit liability (asset) resulting from return on plan assets excluding interest income or expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset" xlink:to="lab_ifrs-full_ReturnOnPlanAssetsNetDefinedBenefitLiabilityAsset" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_GeographicalAreasDomain_019b46bd-0715-708e-9647-8567fb538772_terseLabel_en-US" xlink:label="lab_ifrs-full_GeographicalAreasDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Geographical market</link:label>
    <link:label id="lab_ifrs-full_GeographicalAreasDomain_label_en-US" xlink:label="lab_ifrs-full_GeographicalAreasDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Geographical areas [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GeographicalAreasDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_GeographicalAreasDomain" xlink:to="lab_ifrs-full_GeographicalAreasDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets_019b46bd-053d-73b9-a92d-e5d95d38cad5_verboseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Impairment of wells, pipelines, properties, plant and equipment</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets_019b46bd-053d-7760-947e-febc7790244f_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Impairment of wells, pipelines, properties, plant and equipment</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments for losses (gains) on disposal of non-current assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets"/>
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    <link:label id="lab_ck0000932782_DrillingEquipmentsMember_019b46bd-053c-7081-b703-fb33c081a7dd_terseLabel_en-US" xlink:label="lab_ck0000932782_DrillingEquipmentsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Drilling equipment</link:label>
    <link:label id="lab_ck0000932782_DrillingEquipmentsMember_label_en-US" xlink:label="lab_ck0000932782_DrillingEquipmentsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Drilling Equipments [Member]</link:label>
    <link:label id="lab_ck0000932782_DrillingEquipmentsMember_documentation_en-US" xlink:label="lab_ck0000932782_DrillingEquipmentsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Drilling Equipments [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DrillingEquipmentsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DrillingEquipmentsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DrillingEquipmentsMember" xlink:to="lab_ck0000932782_DrillingEquipmentsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EquityInstrumentsMember_019b46bd-0715-768b-8cfa-5bcd850fe607_terseLabel_en-US" xlink:label="lab_ck0000932782_EquityInstrumentsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity instruments</link:label>
    <link:label id="lab_ck0000932782_EquityInstrumentsMember_label_en-US" xlink:label="lab_ck0000932782_EquityInstrumentsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity instruments [member]</link:label>
    <link:label id="lab_ck0000932782_EquityInstrumentsMember_documentation_en-US" xlink:label="lab_ck0000932782_EquityInstrumentsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Equity instruments.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EquityInstrumentsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EquityInstrumentsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EquityInstrumentsMember" xlink:to="lab_ck0000932782_EquityInstrumentsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DevelopedReservesNetPeriodIncreaseDecrease_019b46bd-053c-7c66-a09f-27f629bcf4a9_terseLabel_en-US" xlink:label="lab_ck0000932782_DevelopedReservesNetPeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Developed reserves increase decrease</link:label>
    <link:label id="lab_ck0000932782_DevelopedReservesNetPeriodIncreaseDecrease_label_en-US" xlink:label="lab_ck0000932782_DevelopedReservesNetPeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Developed Reserves Net Period Increase Decrease</link:label>
    <link:label id="lab_ck0000932782_DevelopedReservesNetPeriodIncreaseDecrease_documentation_en-US" xlink:label="lab_ck0000932782_DevelopedReservesNetPeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Developed reserves net period increase decrease.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DevelopedReservesNetPeriodIncreaseDecrease" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DevelopedReservesNetPeriodIncreaseDecrease"/>
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    <link:label id="lab_ck0000932782_IndependenciaPetrochemicalComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_IndependenciaPetrochemicalComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Independencia Petrochemical Complex</link:label>
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    <link:label id="lab_ck0000932782_GasMember_019b46bd-0715-7e3b-8bfc-086eb0c44a04_terseLabel_en-US" xlink:label="lab_ck0000932782_GasMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gas</link:label>
    <link:label id="lab_ck0000932782_GasMember_label_en-US" xlink:label="lab_ck0000932782_GasMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gas [member]</link:label>
    <link:label id="lab_ck0000932782_GasMember_documentation_en-US" xlink:label="lab_ck0000932782_GasMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gas.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GasMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GasMember"/>
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    <link:label id="lab_ck0000932782_FixedRateEurosMember_019b46bd-0684-7110-b01c-dd7668b085ae_terseLabel_en-US" xlink:label="lab_ck0000932782_FixedRateEurosMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed rate (euros)</link:label>
    <link:label id="lab_ck0000932782_FixedRateEurosMember_label_en-US" xlink:label="lab_ck0000932782_FixedRateEurosMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed rate (euros) [member]</link:label>
    <link:label id="lab_ck0000932782_FixedRateEurosMember_documentation_en-US" xlink:label="lab_ck0000932782_FixedRateEurosMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed rate (euros).</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FixedRateEurosMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FixedRateEurosMember"/>
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    <link:label id="lab_ifrs-full_FinanceCosts_label_en-US" xlink:label="lab_ifrs-full_FinanceCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance costs</link:label>
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    <link:label id="lab_ck0000932782_BlockThirtyTwoMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockThirtyTwoMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block thirty two.</link:label>
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    <link:label id="lab_ck0000932782_DevelopedAndUndevelopedReservesNetPeriodIncreaseDecrease_documentation_en-US" xlink:label="lab_ck0000932782_DevelopedAndUndevelopedReservesNetPeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Developed and undeveloped reserves net period increase decrease.</link:label>
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    <link:label id="lab_ck0000932782_EthyleneMember_019b46bd-0684-7037-a789-dc24469de803_terseLabel_en-US" xlink:label="lab_ck0000932782_EthyleneMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ethylene</link:label>
    <link:label id="lab_ck0000932782_EthyleneMember_label_en-US" xlink:label="lab_ck0000932782_EthyleneMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ethylene [Member]</link:label>
    <link:label id="lab_ck0000932782_EthyleneMember_documentation_en-US" xlink:label="lab_ck0000932782_EthyleneMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ethylene</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AcquisitionOfBusiness" xlink:to="lab_ck0000932782_AcquisitionOfBusiness" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfDeferredTaxLiabilityAssetTableTextBlock_019b46bd-0684-78ae-adee-e6c19b7114c7_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfDeferredTaxLiabilityAssetTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Principal Factors Generating the Deferred DUC</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfDeferredTaxLiabilityAssetTableTextBlock_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfDeferredTaxLiabilityAssetTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of deferred tax liability asset [Table Text Block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfDeferredTaxLiabilityAssetTableTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfDeferredTaxLiabilityAssetTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The disclosure of deferred tax liability asset.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfDeferredTaxLiabilityAssetTableTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfDeferredTaxLiabilityAssetTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfDeferredTaxLiabilityAssetTableTextBlock" xlink:to="lab_ck0000932782_DisclosureOfDeferredTaxLiabilityAssetTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome_019b46bd-053c-7feb-ac14-7875ea76c9d1_terseLabel_en-US" xlink:label="lab_ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred tax effect of actuarial gains and losses</link:label>
    <link:label id="lab_ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome_label_en-US" xlink:label="lab_ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income tax relating to remeasurements of defined benefit plans included in other comprehensive income</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome" xlink:to="lab_ifrs-full_IncomeTaxRelatingToRemeasurementsOfDefinedBenefitPlansOfOtherComprehensiveIncome" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AuditInformationAbstract_label_en-US" xlink:label="lab_ck0000932782_AuditInformationAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Audit Information [Abstract]</link:label>
    <link:label id="lab_ck0000932782_AuditInformationAbstract_documentation_en-US" xlink:label="lab_ck0000932782_AuditInformationAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Audit Information</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AuditInformationAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AuditInformationAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AuditInformationAbstract" xlink:to="lab_ck0000932782_AuditInformationAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OneMonthSecuredOvernightFinancingRateMember_019b46bd-053c-74a8-bbfe-e541f0d167a5_terseLabel_en-US" xlink:label="lab_ck0000932782_OneMonthSecuredOvernightFinancingRateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">One Month Secured Overnight Financing Rate</link:label>
    <link:label id="lab_ck0000932782_OneMonthSecuredOvernightFinancingRateMember_label_en-US" xlink:label="lab_ck0000932782_OneMonthSecuredOvernightFinancingRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">One Month Secured Overnight Financing Rate [Member]</link:label>
    <link:label id="lab_ck0000932782_OneMonthSecuredOvernightFinancingRateMember_documentation_en-US" xlink:label="lab_ck0000932782_OneMonthSecuredOvernightFinancingRateMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">One Month Secured Overnight Financing Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OneMonthSecuredOvernightFinancingRateMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OneMonthSecuredOvernightFinancingRateMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OneMonthSecuredOvernightFinancingRateMember" xlink:to="lab_ck0000932782_OneMonthSecuredOvernightFinancingRateMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BlockTwoMember_019b46bd-0715-799f-94ed-5d7243ace25c_terseLabel_en-US" xlink:label="lab_ck0000932782_BlockTwoMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Block 2</link:label>
    <link:label id="lab_ck0000932782_BlockTwoMember_label_en-US" xlink:label="lab_ck0000932782_BlockTwoMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Block two [member]</link:label>
    <link:label id="lab_ck0000932782_BlockTwoMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockTwoMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block two [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockTwoMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockTwoMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BlockTwoMember" xlink:to="lab_ck0000932782_BlockTwoMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AverageReceivableRateOfHedgingInstrument_019b46bd-05e4-767c-9af1-7818b0a12385_terseLabel_en-US" xlink:label="lab_ck0000932782_AverageReceivableRateOfHedgingInstrument" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average receive rate</link:label>
    <link:label id="lab_ck0000932782_AverageReceivableRateOfHedgingInstrument_label_en-US" xlink:label="lab_ck0000932782_AverageReceivableRateOfHedgingInstrument" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Average receivable rate of hedging instrument</link:label>
    <link:label id="lab_ck0000932782_AverageReceivableRateOfHedgingInstrument_documentation_en-US" xlink:label="lab_ck0000932782_AverageReceivableRateOfHedgingInstrument" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Average receivable rate of hedging instrument.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AverageReceivableRateOfHedgingInstrument" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AverageReceivableRateOfHedgingInstrument"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AverageReceivableRateOfHedgingInstrument" xlink:to="lab_ck0000932782_AverageReceivableRateOfHedgingInstrument" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIEERateMember_019b46bd-045f-79ac-998e-f8bef64b36b5_terseLabel_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIEERateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIEE Rate</link:label>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIEERateMember_label_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIEERateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIEE Rate [Member]</link:label>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIEERateMember_documentation_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIEERateMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIEE Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TwentyEightDaysTIEERateMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TwentyEightDaysTIEERateMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TwentyEightDaysTIEERateMember" xlink:to="lab_ck0000932782_TwentyEightDaysTIEERateMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfDutiesAndOthersExplanatory_019b46bd-0715-78d4-97c8-8fdb86ccd747_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfDutiesAndOthersExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Total DUC and Others</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfDutiesAndOthersExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfDutiesAndOthersExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of Duties and Others [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfDutiesAndOthersExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfDutiesAndOthersExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of Duties and Others [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfDutiesAndOthersExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfDutiesAndOthersExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfDutiesAndOthersExplanatory" xlink:to="lab_ck0000932782_DisclosureOfDutiesAndOthersExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TypesOfAgreementAxis_019b46bd-05e4-73b1-97e7-5ed538a5a4dc_terseLabel_en-US" xlink:label="lab_ck0000932782_TypesOfAgreementAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Types of agreement [axis]</link:label>
    <link:label id="lab_ck0000932782_TypesOfAgreementAxis_label_en-US" xlink:label="lab_ck0000932782_TypesOfAgreementAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Types of agreement [axis]</link:label>
    <link:label id="lab_ck0000932782_TypesOfAgreementAxis_documentation_en-US" xlink:label="lab_ck0000932782_TypesOfAgreementAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Types of agreement [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TypesOfAgreementAxis" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TypesOfAgreementAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TypesOfAgreementAxis" xlink:to="lab_ck0000932782_TypesOfAgreementAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IndustrialProcessesMember_019bb785-49b8-7e62-82ba-4798ad620390_terseLabel_en-US" xlink:label="lab_ck0000932782_IndustrialProcessesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Industrial Processes (formerly part of Pemex Industrial Transformation)</link:label>
    <link:label id="lab_ck0000932782_IndustrialProcessesMember_label_en-US" xlink:label="lab_ck0000932782_IndustrialProcessesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Industrial Processes [Member]</link:label>
    <link:label id="lab_ck0000932782_IndustrialProcessesMember_documentation_en-US" xlink:label="lab_ck0000932782_IndustrialProcessesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">formerly Pemex industrial transformation</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IndustrialProcessesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IndustrialProcessesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IndustrialProcessesMember" xlink:to="lab_ck0000932782_IndustrialProcessesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProceedsFromGovernmentGrantsClassifiedAsFinancingActivities_019b46bd-053d-7b73-b2ee-18a0ad5cac90_terseLabel_en-US" xlink:label="lab_ifrs-full_ProceedsFromGovernmentGrantsClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Collections from the Mexican Government</link:label>
    <link:label id="lab_ifrs-full_ProceedsFromGovernmentGrantsClassifiedAsFinancingActivities_label_en-US" xlink:label="lab_ifrs-full_ProceedsFromGovernmentGrantsClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from government grants, classified as financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromGovernmentGrantsClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromGovernmentGrantsClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProceedsFromGovernmentGrantsClassifiedAsFinancingActivities" xlink:to="lab_ifrs-full_ProceedsFromGovernmentGrantsClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract_019b46bd-0715-7fe6-babb-711a741db3da_terseLabel_en-US" xlink:label="lab_ifrs-full_ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reconciliation of changes in property, plant and equipment [abstract]</link:label>
    <link:label id="lab_ifrs-full_ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract_label_en-US" xlink:label="lab_ifrs-full_ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reconciliation of changes in property, plant and equipment [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract" xlink:to="lab_ifrs-full_ReconciliationOfChangesInPropertyPlantAndEquipmentAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityFilerCategory_019b46bd-0684-75c6-bbd8-20db9a411a58_terseLabel_en-US" xlink:label="lab_dei_EntityFilerCategory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Filer Category</link:label>
    <link:label id="lab_dei_EntityFilerCategory_label_en-US" xlink:label="lab_dei_EntityFilerCategory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Filer Category</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFilerCategory" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFilerCategory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityFilerCategory" xlink:to="lab_dei_EntityFilerCategory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DryGasReserveMember_019b46bd-053c-7420-8e15-77c45f01f4fd_terseLabel_en-US" xlink:label="lab_ck0000932782_DryGasReserveMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dry gas reserve</link:label>
    <link:label id="lab_ck0000932782_DryGasReserveMember_label_en-US" xlink:label="lab_ck0000932782_DryGasReserveMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dry Gas Reserve [member]</link:label>
    <link:label id="lab_ck0000932782_DryGasReserveMember_documentation_en-US" xlink:label="lab_ck0000932782_DryGasReserveMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Dry gas reserve.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DryGasReserveMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DryGasReserveMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DryGasReserveMember" xlink:to="lab_ck0000932782_DryGasReserveMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BlockTwentyNineCuencaDelSuresteMember_019b46bd-05e4-7647-a9f8-7a0ef81ed8e6_terseLabel_en-US" xlink:label="lab_ck0000932782_BlockTwentyNineCuencaDelSuresteMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Block 29 Cuenca del Sureste</link:label>
    <link:label id="lab_ck0000932782_BlockTwentyNineCuencaDelSuresteMember_label_en-US" xlink:label="lab_ck0000932782_BlockTwentyNineCuencaDelSuresteMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Block Twenty Nine Cuenca del Sureste [member]</link:label>
    <link:label id="lab_ck0000932782_BlockTwentyNineCuencaDelSuresteMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockTwentyNineCuencaDelSuresteMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block twenty nine Cuenca del Sureste.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockTwentyNineCuencaDelSuresteMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockTwentyNineCuencaDelSuresteMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BlockTwentyNineCuencaDelSuresteMember" xlink:to="lab_ck0000932782_BlockTwentyNineCuencaDelSuresteMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InterestExpenseIncomeNetDefinedBenefitLiabilityAsset_019b46bd-0684-75de-aa21-a0739b585202_netLabel_en-US" xlink:label="lab_ifrs-full_InterestExpenseIncomeNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Net interest</link:label>
    <link:label id="lab_ifrs-full_InterestExpenseIncomeNetDefinedBenefitLiabilityAsset_019b46bd-0684-73b3-a65d-8fcb8dfc7940_terseLabel_en-US" xlink:label="lab_ifrs-full_InterestExpenseIncomeNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Charge to income for the year</link:label>
    <link:label id="lab_ifrs-full_InterestExpenseIncomeNetDefinedBenefitLiabilityAsset_label_en-US" xlink:label="lab_ifrs-full_InterestExpenseIncomeNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (decrease) in net defined benefit liability (asset) resulting from interest expense (income)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestExpenseIncomeNetDefinedBenefitLiabilityAsset" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestExpenseIncomeNetDefinedBenefitLiabilityAsset"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InterestExpenseIncomeNetDefinedBenefitLiabilityAsset" xlink:to="lab_ifrs-full_InterestExpenseIncomeNetDefinedBenefitLiabilityAsset" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AverageForeignExchangeRate_019b46bd-0715-749b-a028-2d013c1a16f4_terseLabel_en-US" xlink:label="lab_ifrs-full_AverageForeignExchangeRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average foreign exchange rate</link:label>
    <link:label id="lab_ifrs-full_AverageForeignExchangeRate_019b46bd-0715-7dfa-a7b8-8cbf8d97b21a_verboseLabel_en-US" xlink:label="lab_ifrs-full_AverageForeignExchangeRate" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Rate of U.S.$</link:label>
    <link:label id="lab_ifrs-full_AverageForeignExchangeRate_label_en-US" xlink:label="lab_ifrs-full_AverageForeignExchangeRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Average foreign exchange rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AverageForeignExchangeRate" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AverageForeignExchangeRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AverageForeignExchangeRate" xlink:to="lab_ifrs-full_AverageForeignExchangeRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_USDollarTreasuryPortfolioMember_019b46bd-053c-798d-b187-90f9797ab35a_terseLabel_en-US" xlink:label="lab_ck0000932782_USDollarTreasuryPortfolioMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">U.S. Dollar Treasury Portfolio</link:label>
    <link:label id="lab_ck0000932782_USDollarTreasuryPortfolioMember_label_en-US" xlink:label="lab_ck0000932782_USDollarTreasuryPortfolioMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">U.S. Dollar Treasury Portfolio [member]</link:label>
    <link:label id="lab_ck0000932782_USDollarTreasuryPortfolioMember_documentation_en-US" xlink:label="lab_ck0000932782_USDollarTreasuryPortfolioMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">U.S. dollar treasury portfolio.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_USDollarTreasuryPortfolioMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_USDollarTreasuryPortfolioMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_USDollarTreasuryPortfolioMember" xlink:to="lab_ck0000932782_USDollarTreasuryPortfolioMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProfitLossFromOperatingActivities_019b46bd-0715-7106-911b-3fc5eee16319_totalLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossFromOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Operating income (loss)</link:label>
    <link:label id="lab_ifrs-full_ProfitLossFromOperatingActivities_019b46bd-0715-7531-b482-768f117bf55a_verboseLabel_en-US" xlink:label="lab_ifrs-full_ProfitLossFromOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Operating (loss) income</link:label>
    <link:label id="lab_ifrs-full_ProfitLossFromOperatingActivities_label_en-US" xlink:label="lab_ifrs-full_ProfitLossFromOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit (loss) from operating activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossFromOperatingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossFromOperatingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProfitLossFromOperatingActivities" xlink:to="lab_ifrs-full_ProfitLossFromOperatingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CrudeOil1Member_019b46bd-053c-7438-8f55-3e2be75970eb_terseLabel_en-US" xlink:label="lab_ck0000932782_CrudeOil1Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Crude oil</link:label>
    <link:label id="lab_ck0000932782_CrudeOil1Member_019b46bd-053c-7520-84ef-bb6c865120a8_verboseLabel_en-US" xlink:label="lab_ck0000932782_CrudeOil1Member" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Crude oil, per barrel</link:label>
    <link:label id="lab_ck0000932782_CrudeOil1Member_label_en-US" xlink:label="lab_ck0000932782_CrudeOil1Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Crude Oil 1 [member]</link:label>
    <link:label id="lab_ck0000932782_CrudeOil1Member_documentation_en-US" xlink:label="lab_ck0000932782_CrudeOil1Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Crude oil.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CrudeOil1Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CrudeOil1Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CrudeOil1Member" xlink:to="lab_ck0000932782_CrudeOil1Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProductsAndServicesTransferredOverTimeMember_019b46bd-053c-7cef-b243-b7bab2962d21_terseLabel_en-US" xlink:label="lab_ck0000932782_ProductsAndServicesTransferredOverTimeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Products and services transferred over the time</link:label>
    <link:label id="lab_ck0000932782_ProductsAndServicesTransferredOverTimeMember_label_en-US" xlink:label="lab_ck0000932782_ProductsAndServicesTransferredOverTimeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Products and services transferred over time [member]</link:label>
    <link:label id="lab_ck0000932782_ProductsAndServicesTransferredOverTimeMember_documentation_en-US" xlink:label="lab_ck0000932782_ProductsAndServicesTransferredOverTimeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Products and services transferred over time.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProductsAndServicesTransferredOverTimeMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProductsAndServicesTransferredOverTimeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProductsAndServicesTransferredOverTimeMember" xlink:to="lab_ck0000932782_ProductsAndServicesTransferredOverTimeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionThreeNovember2025Member_019bb211-ff53-7aa2-9723-3ff93b600d20_terseLabel_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionThreeNovember2025Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Three, November 2025</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionThreeNovember2025Member_label_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionThreeNovember2025Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Three, November 2025 [Member]</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionThreeNovember2025Member_documentation_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionThreeNovember2025Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Three, November 2025</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StrengtheningOfFinancialPositionThreeNovember2025Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StrengtheningOfFinancialPositionThreeNovember2025Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_StrengtheningOfFinancialPositionThreeNovember2025Member" xlink:to="lab_ck0000932782_StrengtheningOfFinancialPositionThreeNovember2025Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProvisionsForPluggingOfWellsIncreaseDecreaseCapitalizedInFixedAssets_019b46bd-0684-7232-bcc0-40cd5fbe5138_negatedLabel_en-US" xlink:label="lab_ck0000932782_ProvisionsForPluggingOfWellsIncreaseDecreaseCapitalizedInFixedAssets" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Increase (decrease) capitalized in fixed assets</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForPluggingOfWellsIncreaseDecreaseCapitalizedInFixedAssets_label_en-US" xlink:label="lab_ck0000932782_ProvisionsForPluggingOfWellsIncreaseDecreaseCapitalizedInFixedAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provisions for Plugging of Wells Increase Decrease Capitalized In Fixed Assets</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForPluggingOfWellsIncreaseDecreaseCapitalizedInFixedAssets_documentation_en-US" xlink:label="lab_ck0000932782_ProvisionsForPluggingOfWellsIncreaseDecreaseCapitalizedInFixedAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Provisions for plugging of wells increase decrease capitalized in fixed assets.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProvisionsForPluggingOfWellsIncreaseDecreaseCapitalizedInFixedAssets" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProvisionsForPluggingOfWellsIncreaseDecreaseCapitalizedInFixedAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProvisionsForPluggingOfWellsIncreaseDecreaseCapitalizedInFixedAssets" xlink:to="lab_ck0000932782_ProvisionsForPluggingOfWellsIncreaseDecreaseCapitalizedInFixedAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityAddressAddressLine1_019b46bd-0684-753b-8693-e0e28d72cb0b_terseLabel_en-US" xlink:label="lab_dei_EntityAddressAddressLine1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Address, Address Line One</link:label>
    <link:label id="lab_dei_EntityAddressAddressLine1_label_en-US" xlink:label="lab_dei_EntityAddressAddressLine1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Address, Address Line One</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressAddressLine1" xlink:to="lab_dei_EntityAddressAddressLine1" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityAddressAddressLine2_019b46bd-0684-7661-bcf3-5ed542fc44a1_terseLabel_en-US" xlink:label="lab_dei_EntityAddressAddressLine2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Address, Address Line Two</link:label>
    <link:label id="lab_dei_EntityAddressAddressLine2_label_en-US" xlink:label="lab_dei_EntityAddressAddressLine2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Address, Address Line Two</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine2"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressAddressLine2" xlink:to="lab_dei_EntityAddressAddressLine2" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InterestsReceivedClassifiedAsFinancingActivities_019b46bd-053c-75c0-b524-499f45933287_negatedLabel_en-US" xlink:label="lab_ck0000932782_InterestsReceivedClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Financing income</link:label>
    <link:label id="lab_ck0000932782_InterestsReceivedClassifiedAsFinancingActivities_label_en-US" xlink:label="lab_ck0000932782_InterestsReceivedClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interests Received Classified As Financing Activities</link:label>
    <link:label id="lab_ck0000932782_InterestsReceivedClassifiedAsFinancingActivities_documentation_en-US" xlink:label="lab_ck0000932782_InterestsReceivedClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interests received classified as financing activities.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterestsReceivedClassifiedAsFinancingActivities" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterestsReceivedClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterestsReceivedClassifiedAsFinancingActivities" xlink:to="lab_ck0000932782_InterestsReceivedClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RevenueFromSaleOfGoods_019b46bd-053c-7b2b-9ec1-05434514a2aa_verboseLabel_en-US" xlink:label="lab_ifrs-full_RevenueFromSaleOfGoods" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Trade</link:label>
    <link:label id="lab_ifrs-full_RevenueFromSaleOfGoods_019b46bd-053c-759d-a308-63e3b18a2deb_terseLabel_en-US" xlink:label="lab_ifrs-full_RevenueFromSaleOfGoods" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total revenues</link:label>
    <link:label id="lab_ifrs-full_RevenueFromSaleOfGoods_label_en-US" xlink:label="lab_ifrs-full_RevenueFromSaleOfGoods" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue from sale of goods</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RevenueFromSaleOfGoods" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevenueFromSaleOfGoods"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RevenueFromSaleOfGoods" xlink:to="lab_ifrs-full_RevenueFromSaleOfGoods" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ClaimsRecovery_019b46bd-053c-7cf1-9af5-1a5ac67341f9_terseLabel_en-US" xlink:label="lab_ck0000932782_ClaimsRecovery" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Claims recovery</link:label>
    <link:label id="lab_ck0000932782_ClaimsRecovery_label_en-US" xlink:label="lab_ck0000932782_ClaimsRecovery" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Claims Recovery</link:label>
    <link:label id="lab_ck0000932782_ClaimsRecovery_documentation_en-US" xlink:label="lab_ck0000932782_ClaimsRecovery" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Claims recovery.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ClaimsRecovery" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ClaimsRecovery"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ClaimsRecovery" xlink:to="lab_ck0000932782_ClaimsRecovery" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SubsequentEvent1Member_019b46bd-053c-7261-a6ca-6cb8822c1085_terseLabel_en-US" xlink:label="lab_ck0000932782_SubsequentEvent1Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent event</link:label>
    <link:label id="lab_ck0000932782_SubsequentEvent1Member_label_en-US" xlink:label="lab_ck0000932782_SubsequentEvent1Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event 1 [Member]</link:label>
    <link:label id="lab_ck0000932782_SubsequentEvent1Member_documentation_en-US" xlink:label="lab_ck0000932782_SubsequentEvent1Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Subsequent event.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SubsequentEvent1Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SubsequentEvent1Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SubsequentEvent1Member" xlink:to="lab_ck0000932782_SubsequentEvent1Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AverageCrudeOilPrice_019b46bd-053d-7a2e-857b-031e09199be0_terseLabel_en-US" xlink:label="lab_ck0000932782_AverageCrudeOilPrice" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average crude oil price (USD per barrel)</link:label>
    <link:label id="lab_ck0000932782_AverageCrudeOilPrice_019b46bd-053d-732d-89f5-21242057d54c_verboseLabel_en-US" xlink:label="lab_ck0000932782_AverageCrudeOilPrice" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Average crude oil Price (U.S.$)</link:label>
    <link:label id="lab_ck0000932782_AverageCrudeOilPrice_label_en-US" xlink:label="lab_ck0000932782_AverageCrudeOilPrice" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Average crude oil price</link:label>
    <link:label id="lab_ck0000932782_AverageCrudeOilPrice_documentation_en-US" xlink:label="lab_ck0000932782_AverageCrudeOilPrice" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Average crude oil price.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AverageCrudeOilPrice" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AverageCrudeOilPrice"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AverageCrudeOilPrice" xlink:to="lab_ck0000932782_AverageCrudeOilPrice" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ItemsRelatedToFinancingActivitiesAbstract_019b46bd-05e4-7b06-953c-ade59c514062_terseLabel_en-US" xlink:label="lab_ck0000932782_ItemsRelatedToFinancingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Items related to financing activities</link:label>
    <link:label id="lab_ck0000932782_ItemsRelatedToFinancingActivitiesAbstract_label_en-US" xlink:label="lab_ck0000932782_ItemsRelatedToFinancingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Items related to financing activities abstract</link:label>
    <link:label id="lab_ck0000932782_ItemsRelatedToFinancingActivitiesAbstract_documentation_en-US" xlink:label="lab_ck0000932782_ItemsRelatedToFinancingActivitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Items related to financing activities abstract.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ItemsRelatedToFinancingActivitiesAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ItemsRelatedToFinancingActivitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ItemsRelatedToFinancingActivitiesAbstract" xlink:to="lab_ck0000932782_ItemsRelatedToFinancingActivitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FutureCashFlowTimeHorizon_019b46bd-0684-76cf-95eb-acdef2fc06e5_terseLabel_en-US" xlink:label="lab_ck0000932782_FutureCashFlowTimeHorizon" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Useful life</link:label>
    <link:label id="lab_ck0000932782_FutureCashFlowTimeHorizon_label_en-US" xlink:label="lab_ck0000932782_FutureCashFlowTimeHorizon" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future cash flow time horizon</link:label>
    <link:label id="lab_ck0000932782_FutureCashFlowTimeHorizon_documentation_en-US" xlink:label="lab_ck0000932782_FutureCashFlowTimeHorizon" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Future cash flow time horizon.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FutureCashFlowTimeHorizon" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FutureCashFlowTimeHorizon"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FutureCashFlowTimeHorizon" xlink:to="lab_ck0000932782_FutureCashFlowTimeHorizon" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AccumulatedOtherComprehensiveIncome_019b46bd-05e4-7b59-a6b5-02210521763e_terseLabel_en-US" xlink:label="lab_ifrs-full_AccumulatedOtherComprehensiveIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accumulated other comprehensive result</link:label>
    <link:label id="lab_ifrs-full_AccumulatedOtherComprehensiveIncome_label_en-US" xlink:label="lab_ifrs-full_AccumulatedOtherComprehensiveIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated other comprehensive income</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AccumulatedOtherComprehensiveIncome" xlink:to="lab_ifrs-full_AccumulatedOtherComprehensiveIncome" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AntonioJBermudezMember_019b46bd-0684-7112-b446-b49499fc2d22_terseLabel_en-US" xlink:label="lab_ck0000932782_AntonioJBermudezMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Antonio J. Berm&#250;dez</link:label>
    <link:label id="lab_ck0000932782_AntonioJBermudezMember_label_en-US" xlink:label="lab_ck0000932782_AntonioJBermudezMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Antonio J Bermudez [Member]</link:label>
    <link:label id="lab_ck0000932782_AntonioJBermudezMember_documentation_en-US" xlink:label="lab_ck0000932782_AntonioJBermudezMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Antonio J. Berm&#250;dez.</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AntonioJBermudezMember" xlink:to="lab_ck0000932782_AntonioJBermudezMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ActuarialAssumptionOfMedicalCostTrendRatesMember_019b46bd-0684-7d2b-ade8-be56ac2bb787_terseLabel_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfMedicalCostTrendRatesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rate of increase in medical services</link:label>
    <link:label id="lab_ifrs-full_ActuarialAssumptionOfMedicalCostTrendRatesMember_label_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfMedicalCostTrendRatesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Actuarial assumption of medical cost trend rates [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ActuarialAssumptionOfMedicalCostTrendRatesMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ActuarialAssumptionOfMedicalCostTrendRatesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ActuarialAssumptionOfMedicalCostTrendRatesMember" xlink:to="lab_ifrs-full_ActuarialAssumptionOfMedicalCostTrendRatesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FixedInterestPlus750BasisPointsMember_019b46bd-0684-7a0b-8fb6-0bfb81680e7d_terseLabel_en-US" xlink:label="lab_ck0000932782_FixedInterestPlus750BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed Interest Plus 750 Basis Points</link:label>
    <link:label id="lab_ck0000932782_FixedInterestPlus750BasisPointsMember_label_en-US" xlink:label="lab_ck0000932782_FixedInterestPlus750BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed Interest Plus 750 Basis Points [Member]</link:label>
    <link:label id="lab_ck0000932782_FixedInterestPlus750BasisPointsMember_documentation_en-US" xlink:label="lab_ck0000932782_FixedInterestPlus750BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed Interest Plus 750 Basis Points</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FixedInterestPlus750BasisPointsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FixedInterestPlus750BasisPointsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FixedInterestPlus750BasisPointsMember" xlink:to="lab_ck0000932782_FixedInterestPlus750BasisPointsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AdjustmentsForCancelationOfRightsToUse_019b46bd-0684-7927-9ed7-bfff556f6a7f_verboseLabel_en-US" xlink:label="lab_ck0000932782_AdjustmentsForCancelationOfRightsToUse" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Cancellation of leases</link:label>
    <link:label id="lab_ck0000932782_AdjustmentsForCancelationOfRightsToUse_label_en-US" xlink:label="lab_ck0000932782_AdjustmentsForCancelationOfRightsToUse" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments For Cancelation Of Rights To Use</link:label>
    <link:label id="lab_ck0000932782_AdjustmentsForCancelationOfRightsToUse_documentation_en-US" xlink:label="lab_ck0000932782_AdjustmentsForCancelationOfRightsToUse" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Adjustments for cancelation of rights to use</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AdjustmentsForCancelationOfRightsToUse" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AdjustmentsForCancelationOfRightsToUse"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AdjustmentsForCancelationOfRightsToUse" xlink:to="lab_ck0000932782_AdjustmentsForCancelationOfRightsToUse" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans_019b46bd-0684-70b7-a7de-b1b8aa909029_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Post-employment benefit expense in profit or loss, defined benefit plans</link:label>
    <link:label id="lab_ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans_label_en-US" xlink:label="lab_ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Post-employment benefit expense in profit or loss, defined benefit plans</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans" xlink:to="lab_ifrs-full_PostemploymentBenefitExpenseDefinedBenefitPlans" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_RefinedPetroleumProductsMember_019b46bd-05e5-7fee-9f9c-71e40ba88055_terseLabel_en-US" xlink:label="lab_ck0000932782_RefinedPetroleumProductsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Refined petroleum products</link:label>
    <link:label id="lab_ck0000932782_RefinedPetroleumProductsMember_label_en-US" xlink:label="lab_ck0000932782_RefinedPetroleumProductsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Refined petroleum products [member]</link:label>
    <link:label id="lab_ck0000932782_RefinedPetroleumProductsMember_documentation_en-US" xlink:label="lab_ck0000932782_RefinedPetroleumProductsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Refined petroleum products.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RefinedPetroleumProductsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RefinedPetroleumProductsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_RefinedPetroleumProductsMember" xlink:to="lab_ck0000932782_RefinedPetroleumProductsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AdministrativeClaimMember_019b46bd-05e4-72d2-b861-81b8941ab15d_terseLabel_en-US" xlink:label="lab_ck0000932782_AdministrativeClaimMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Administrative Claim</link:label>
    <link:label id="lab_ck0000932782_AdministrativeClaimMember_label_en-US" xlink:label="lab_ck0000932782_AdministrativeClaimMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Administrative Claim [Member]</link:label>
    <link:label id="lab_ck0000932782_AdministrativeClaimMember_documentation_en-US" xlink:label="lab_ck0000932782_AdministrativeClaimMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Administrative Claim [member].</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AdministrativeClaimMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AdministrativeClaimMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AdministrativeClaimMember" xlink:to="lab_ck0000932782_AdministrativeClaimMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DerivativeFinancialInstrumentsTable_019b46bd-053c-733e-862c-ff015db971c3_terseLabel_en-US" xlink:label="lab_ck0000932782_DerivativeFinancialInstrumentsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative financial instruments [table]</link:label>
    <link:label id="lab_ck0000932782_DerivativeFinancialInstrumentsTable_label_en-US" xlink:label="lab_ck0000932782_DerivativeFinancialInstrumentsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative financial instruments [table]</link:label>
    <link:label id="lab_ck0000932782_DerivativeFinancialInstrumentsTable_documentation_en-US" xlink:label="lab_ck0000932782_DerivativeFinancialInstrumentsTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivative financial instruments.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DerivativeFinancialInstrumentsTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DerivativeFinancialInstrumentsTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DerivativeFinancialInstrumentsTable" xlink:to="lab_ck0000932782_DerivativeFinancialInstrumentsTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentLiabilitiesAbstract_019b46bd-05e4-77cc-89fc-f63209f90f89_verboseLabel_en-US" xlink:label="lab_ifrs-full_CurrentLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Current liabilities:</link:label>
    <link:label id="lab_ifrs-full_CurrentLiabilitiesAbstract_019b46bd-05e4-7d38-8745-e1e7530cab9d_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current liabilities</link:label>
    <link:label id="lab_ifrs-full_CurrentLiabilitiesAbstract_label_en-US" xlink:label="lab_ifrs-full_CurrentLiabilitiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current liabilities [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLiabilitiesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLiabilitiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentLiabilitiesAbstract" xlink:to="lab_ifrs-full_CurrentLiabilitiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AfterTaxDiscountRate_019b46bd-0684-71cc-bd70-6a97f25e6d15_terseLabel_en-US" xlink:label="lab_ck0000932782_AfterTaxDiscountRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">After-tax discount rate</link:label>
    <link:label id="lab_ck0000932782_AfterTaxDiscountRate_label_en-US" xlink:label="lab_ck0000932782_AfterTaxDiscountRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">After Tax Discount Rate</link:label>
    <link:label id="lab_ck0000932782_AfterTaxDiscountRate_documentation_en-US" xlink:label="lab_ck0000932782_AfterTaxDiscountRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">After Tax Discount Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AfterTaxDiscountRate" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AfterTaxDiscountRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AfterTaxDiscountRate" xlink:to="lab_ck0000932782_AfterTaxDiscountRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherOperationTaxesAndDutiesExpenses_019b46bd-05e4-72b1-8a11-860d35d5b1cf_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherOperationTaxesAndDutiesExpenses" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other operation taxes and duties</link:label>
    <link:label id="lab_ck0000932782_OtherOperationTaxesAndDutiesExpenses_label_en-US" xlink:label="lab_ck0000932782_OtherOperationTaxesAndDutiesExpenses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other operation taxes and duties expenses</link:label>
    <link:label id="lab_ck0000932782_OtherOperationTaxesAndDutiesExpenses_documentation_en-US" xlink:label="lab_ck0000932782_OtherOperationTaxesAndDutiesExpenses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other operation taxes and duties expenses.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherOperationTaxesAndDutiesExpenses" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherOperationTaxesAndDutiesExpenses"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherOperationTaxesAndDutiesExpenses" xlink:to="lab_ck0000932782_OtherOperationTaxesAndDutiesExpenses" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DerivativeVolumeNotionalAmountMember_019b46bd-05e4-7ccb-8930-73b71c5a97fe_terseLabel_en-US" xlink:label="lab_ck0000932782_DerivativeVolumeNotionalAmountMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subtotal</link:label>
    <link:label id="lab_ck0000932782_DerivativeVolumeNotionalAmountMember_label_en-US" xlink:label="lab_ck0000932782_DerivativeVolumeNotionalAmountMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative, Volume Notional Amount [Member]</link:label>
    <link:label id="lab_ck0000932782_DerivativeVolumeNotionalAmountMember_documentation_en-US" xlink:label="lab_ck0000932782_DerivativeVolumeNotionalAmountMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivative, Volume Notional Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DerivativeVolumeNotionalAmountMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DerivativeVolumeNotionalAmountMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DerivativeVolumeNotionalAmountMember" xlink:to="lab_ck0000932782_DerivativeVolumeNotionalAmountMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SupplementalInformationTable_019b46bd-053d-77e4-bd63-53b1c1ea656b_terseLabel_en-US" xlink:label="lab_ck0000932782_SupplementalInformationTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Supplemental information [table]</link:label>
    <link:label id="lab_ck0000932782_SupplementalInformationTable_label_en-US" xlink:label="lab_ck0000932782_SupplementalInformationTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Supplemental information [table]</link:label>
    <link:label id="lab_ck0000932782_SupplementalInformationTable_documentation_en-US" xlink:label="lab_ck0000932782_SupplementalInformationTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Supplemental information [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SupplementalInformationTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SupplementalInformationTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SupplementalInformationTable" xlink:to="lab_ck0000932782_SupplementalInformationTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_019b46bd-0684-7205-ba47-2464628a2eba_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of transactions between related parties [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of transactions between related parties [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:to="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherComprehensiveIncomeAbstract_019b46bd-05e5-7bea-9772-00f44e5bb886_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherComprehensiveIncomeAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other comprehensive results attributable to:</link:label>
    <link:label id="lab_ifrs-full_OtherComprehensiveIncomeAbstract_label_en-US" xlink:label="lab_ifrs-full_OtherComprehensiveIncomeAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other comprehensive income [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherComprehensiveIncomeAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherComprehensiveIncomeAbstract" xlink:to="lab_ifrs-full_OtherComprehensiveIncomeAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NetFinancialAssetsLiabilitiesPosition_019b46bd-0684-7067-9632-ce2e083fa8e8_totalLabel_en-US" xlink:label="lab_ck0000932782_NetFinancialAssetsLiabilitiesPosition" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net position Asset/(Liability)</link:label>
    <link:label id="lab_ck0000932782_NetFinancialAssetsLiabilitiesPosition_label_en-US" xlink:label="lab_ck0000932782_NetFinancialAssetsLiabilitiesPosition" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Financial Assets Liabilities Position</link:label>
    <link:label id="lab_ck0000932782_NetFinancialAssetsLiabilitiesPosition_documentation_en-US" xlink:label="lab_ck0000932782_NetFinancialAssetsLiabilitiesPosition" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net financial assets liabilities position.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NetFinancialAssetsLiabilitiesPosition" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NetFinancialAssetsLiabilitiesPosition"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NetFinancialAssetsLiabilitiesPosition" xlink:to="lab_ck0000932782_NetFinancialAssetsLiabilitiesPosition" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfIncomeByProductExplanatoryTableTextBlock_019b46bd-05e4-78e1-9354-e267a246460d_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfIncomeByProductExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Supplemental Geographic Information</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfIncomeByProductExplanatoryTableTextBlock_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfIncomeByProductExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of income by product explanatory [Table Text Block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfIncomeByProductExplanatoryTableTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfIncomeByProductExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of income by product explanatory.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfIncomeByProductExplanatoryTableTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfIncomeByProductExplanatoryTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfIncomeByProductExplanatoryTableTextBlock" xlink:to="lab_ck0000932782_DisclosureOfIncomeByProductExplanatoryTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ForwardsMember_019d613b-05a4-7590-8921-4ffd835897af_terseLabel_en-US" xlink:label="lab_ck0000932782_ForwardsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Forwards</link:label>
    <link:label id="lab_ck0000932782_ForwardsMember_label_en-US" xlink:label="lab_ck0000932782_ForwardsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Forwards [Member]</link:label>
    <link:label id="lab_ck0000932782_ForwardsMember_documentation_en-US" xlink:label="lab_ck0000932782_ForwardsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Forwards</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ForwardsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ForwardsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ForwardsMember" xlink:to="lab_ck0000932782_ForwardsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OilEquivalentMember_019b46bd-053c-7919-8ed7-9f67e92efc51_terseLabel_en-US" xlink:label="lab_ck0000932782_OilEquivalentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average sales price per barrel of oil equivalent</link:label>
    <link:label id="lab_ck0000932782_OilEquivalentMember_label_en-US" xlink:label="lab_ck0000932782_OilEquivalentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Oil Equivalent [member]</link:label>
    <link:label id="lab_ck0000932782_OilEquivalentMember_documentation_en-US" xlink:label="lab_ck0000932782_OilEquivalentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Oil Equivalent [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OilEquivalentMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OilEquivalentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OilEquivalentMember" xlink:to="lab_ck0000932782_OilEquivalentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ServiciosMltiplesDeBurgosMember_019b46bd-05e5-749a-a573-fca83049062b_terseLabel_en-US" xlink:label="lab_ck0000932782_ServiciosMltiplesDeBurgosMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Servicios Mltiples de Burgos</link:label>
    <link:label id="lab_ck0000932782_ServiciosMltiplesDeBurgosMember_label_en-US" xlink:label="lab_ck0000932782_ServiciosMltiplesDeBurgosMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Servicios Mltiples de Burgos [member]</link:label>
    <link:label id="lab_ck0000932782_ServiciosMltiplesDeBurgosMember_documentation_en-US" xlink:label="lab_ck0000932782_ServiciosMltiplesDeBurgosMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Servicios Mltiples de Burgos.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ServiciosMltiplesDeBurgosMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ServiciosMltiplesDeBurgosMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ServiciosMltiplesDeBurgosMember" xlink:to="lab_ck0000932782_ServiciosMltiplesDeBurgosMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_ContactPersonnelEmailAddress_019b46bd-053c-7129-ae7f-3d4110487638_terseLabel_en-US" xlink:label="lab_dei_ContactPersonnelEmailAddress" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contact Personnel Email Address</link:label>
    <link:label id="lab_dei_ContactPersonnelEmailAddress_label_en-US" xlink:label="lab_dei_ContactPersonnelEmailAddress" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contact Personnel Email Address</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_ContactPersonnelEmailAddress" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_ContactPersonnelEmailAddress"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_ContactPersonnelEmailAddress" xlink:to="lab_dei_ContactPersonnelEmailAddress" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OneHundredEightyTwoDaysTIIEPlus200BasisPointsMember_019b46bd-053c-78ea-8392-249823fbebc0_terseLabel_en-US" xlink:label="lab_ck0000932782_OneHundredEightyTwoDaysTIIEPlus200BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">One Hundred Eighty Two Days TIIE Plus 200 Basis Points</link:label>
    <link:label id="lab_ck0000932782_OneHundredEightyTwoDaysTIIEPlus200BasisPointsMember_label_en-US" xlink:label="lab_ck0000932782_OneHundredEightyTwoDaysTIIEPlus200BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">One Hundred Eighty Two Days TIIE Plus 200 Basis Points [Member]</link:label>
    <link:label id="lab_ck0000932782_OneHundredEightyTwoDaysTIIEPlus200BasisPointsMember_documentation_en-US" xlink:label="lab_ck0000932782_OneHundredEightyTwoDaysTIIEPlus200BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">One Hundred Eighty Two Days TIIE Plus 200 Basis Points</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OneHundredEightyTwoDaysTIIEPlus200BasisPointsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OneHundredEightyTwoDaysTIIEPlus200BasisPointsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OneHundredEightyTwoDaysTIIEPlus200BasisPointsMember" xlink:to="lab_ck0000932782_OneHundredEightyTwoDaysTIIEPlus200BasisPointsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IncentiveForAutomotiveFuelsMember_019b46bd-0684-7dd8-9712-df34be864554_terseLabel_en-US" xlink:label="lab_ck0000932782_IncentiveForAutomotiveFuelsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Incentive for automotive fuels</link:label>
    <link:label id="lab_ck0000932782_IncentiveForAutomotiveFuelsMember_label_en-US" xlink:label="lab_ck0000932782_IncentiveForAutomotiveFuelsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Incentive for automotive fuels [Member]</link:label>
    <link:label id="lab_ck0000932782_IncentiveForAutomotiveFuelsMember_documentation_en-US" xlink:label="lab_ck0000932782_IncentiveForAutomotiveFuelsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Incentive for automotive fuels</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncentiveForAutomotiveFuelsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncentiveForAutomotiveFuelsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IncentiveForAutomotiveFuelsMember" xlink:to="lab_ck0000932782_IncentiveForAutomotiveFuelsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfFinancialLiabilitiesAxis_019b46bd-0684-7441-921e-acf270820eb6_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfFinancialLiabilitiesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of financial liabilities [axis]</link:label>
    <link:label id="lab_ifrs-full_ClassesOfFinancialLiabilitiesAxis_label_en-US" xlink:label="lab_ifrs-full_ClassesOfFinancialLiabilitiesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of financial liabilities [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesAxis" xlink:to="lab_ifrs-full_ClassesOfFinancialLiabilitiesAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfFinancialLiabilitiesDomain_019b46bd-0684-71c8-b2c1-45839c9a0164_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfFinancialLiabilitiesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial liabilities measured at fair value</link:label>
    <link:label id="lab_ifrs-full_ClassesOfFinancialLiabilitiesDomain_label_en-US" xlink:label="lab_ifrs-full_ClassesOfFinancialLiabilitiesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of financial liabilities [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialLiabilitiesDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfFinancialLiabilitiesDomain" xlink:to="lab_ifrs-full_ClassesOfFinancialLiabilitiesDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CrackSpreadSwapsMember_019b46bd-05e4-78db-baef-94cd2385ee2c_terseLabel_en-US" xlink:label="lab_ck0000932782_CrackSpreadSwapsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Crack spread swaps</link:label>
    <link:label id="lab_ck0000932782_CrackSpreadSwapsMember_label_en-US" xlink:label="lab_ck0000932782_CrackSpreadSwapsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Crack Spread Swaps [Member]</link:label>
    <link:label id="lab_ck0000932782_CrackSpreadSwapsMember_documentation_en-US" xlink:label="lab_ck0000932782_CrackSpreadSwapsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Crack Spread Swaps</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CrackSpreadSwapsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CrackSpreadSwapsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CrackSpreadSwapsMember" xlink:to="lab_ck0000932782_CrackSpreadSwapsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_BorrowingsAdjustmentToInterestRateBasis_019b46bd-0684-7eb4-af5f-cfdf6d1c7c13_terseLabel_en-US" xlink:label="lab_ifrs-full_BorrowingsAdjustmentToInterestRateBasis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest rate basis spread</link:label>
    <link:label id="lab_ifrs-full_BorrowingsAdjustmentToInterestRateBasis_label_en-US" xlink:label="lab_ifrs-full_BorrowingsAdjustmentToInterestRateBasis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Borrowings, adjustment to interest rate basis</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsAdjustmentToInterestRateBasis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsAdjustmentToInterestRateBasis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_BorrowingsAdjustmentToInterestRateBasis" xlink:to="lab_ifrs-full_BorrowingsAdjustmentToInterestRateBasis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdditionsToRightofuseAssets_019b46bd-0715-75e8-8784-00a2be59a858_terseLabel_en-US" xlink:label="lab_ifrs-full_AdditionsToRightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additions</link:label>
    <link:label id="lab_ifrs-full_AdditionsToRightofuseAssets_label_en-US" xlink:label="lab_ifrs-full_AdditionsToRightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additions to right-of-use assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdditionsToRightofuseAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdditionsToRightofuseAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdditionsToRightofuseAssets" xlink:to="lab_ifrs-full_AdditionsToRightofuseAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherTaxesAndDuties_019b46bd-0715-7eb0-b566-fe6202974f67_totalLabel_en-US" xlink:label="lab_ck0000932782_OtherTaxesAndDuties" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other taxes and duties</link:label>
    <link:label id="lab_ck0000932782_OtherTaxesAndDuties_label_en-US" xlink:label="lab_ck0000932782_OtherTaxesAndDuties" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other taxes and duties</link:label>
    <link:label id="lab_ck0000932782_OtherTaxesAndDuties_documentation_en-US" xlink:label="lab_ck0000932782_OtherTaxesAndDuties" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other taxes and duties</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherTaxesAndDuties" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherTaxesAndDuties"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherTaxesAndDuties" xlink:to="lab_ck0000932782_OtherTaxesAndDuties" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PlanAssetsMember_019b46bd-05e4-7d22-9bea-ac990308aa49_terseLabel_en-US" xlink:label="lab_ifrs-full_PlanAssetsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan Assets</link:label>
    <link:label id="lab_ifrs-full_PlanAssetsMember_label_en-US" xlink:label="lab_ifrs-full_PlanAssetsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan assets [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PlanAssetsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PlanAssetsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PlanAssetsMember" xlink:to="lab_ifrs-full_PlanAssetsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NominalAmountOfHedgingInstrumentsFixedToVariable_019b46bd-0684-7ceb-b14f-8cc30af79f71_terseLabel_en-US" xlink:label="lab_ck0000932782_NominalAmountOfHedgingInstrumentsFixedToVariable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed to variable</link:label>
    <link:label id="lab_ck0000932782_NominalAmountOfHedgingInstrumentsFixedToVariable_label_en-US" xlink:label="lab_ck0000932782_NominalAmountOfHedgingInstrumentsFixedToVariable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nominal Amount Of Hedging Instruments, Fixed to Variable</link:label>
    <link:label id="lab_ck0000932782_NominalAmountOfHedgingInstrumentsFixedToVariable_documentation_en-US" xlink:label="lab_ck0000932782_NominalAmountOfHedgingInstrumentsFixedToVariable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Nominal Amount Of Hedging Instruments, Fixed to Variable</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NominalAmountOfHedgingInstrumentsFixedToVariable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NominalAmountOfHedgingInstrumentsFixedToVariable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NominalAmountOfHedgingInstrumentsFixedToVariable" xlink:to="lab_ck0000932782_NominalAmountOfHedgingInstrumentsFixedToVariable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BlockFiveMember_019b46bd-05e4-734c-8b87-92d2785e80fa_terseLabel_en-US" xlink:label="lab_ck0000932782_BlockFiveMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Block 5</link:label>
    <link:label id="lab_ck0000932782_BlockFiveMember_label_en-US" xlink:label="lab_ck0000932782_BlockFiveMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Block Five [member]</link:label>
    <link:label id="lab_ck0000932782_BlockFiveMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockFiveMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block Five [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockFiveMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockFiveMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BlockFiveMember" xlink:to="lab_ck0000932782_BlockFiveMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LeaseLiabilities_019b46bd-0715-7d3d-83bf-4c350725b277_negatedLabel_en-US" xlink:label="lab_ifrs-full_LeaseLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Leases</link:label>
    <link:label id="lab_ifrs-full_LeaseLiabilities_019b46bd-0715-7b0d-8fed-dde79ca47e12_terseLabel_en-US" xlink:label="lab_ifrs-full_LeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease liabilities</link:label>
    <link:label id="lab_ifrs-full_LeaseLiabilities_019b46bd-0715-72d7-bb9c-3021456bc122_periodStartLabel_en-US" xlink:label="lab_ifrs-full_LeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance</link:label>
    <link:label id="lab_ifrs-full_LeaseLiabilities_019b46bd-0715-78aa-ac60-ed6c846bc7c7_periodEndLabel_en-US" xlink:label="lab_ifrs-full_LeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance</link:label>
    <link:label id="lab_ifrs-full_LeaseLiabilities_019b46bd-0715-7131-aa7f-f3f835bca1dd_verboseLabel_en-US" xlink:label="lab_ifrs-full_LeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Leases</link:label>
    <link:label id="lab_ifrs-full_LeaseLiabilities_label_en-US" xlink:label="lab_ifrs-full_LeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease liabilities</link:label>
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    <link:label id="lab_ck0000932782_CoatzacoalcosGasProcessorComplexMember_label_en-US" xlink:label="lab_ck0000932782_CoatzacoalcosGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Coatzacoalcos Gas Processor Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_CoatzacoalcosGasProcessorComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_CoatzacoalcosGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Coatzacoalcos Gas Processor Complex</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CoatzacoalcosGasProcessorComplexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CoatzacoalcosGasProcessorComplexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CoatzacoalcosGasProcessorComplexMember" xlink:to="lab_ck0000932782_CoatzacoalcosGasProcessorComplexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProductsAndServicesAxis_019b46bd-0684-77d2-b24b-ca40fdb3c169_terseLabel_en-US" xlink:label="lab_ifrs-full_ProductsAndServicesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Products and services [axis]</link:label>
    <link:label id="lab_ifrs-full_ProductsAndServicesAxis_label_en-US" xlink:label="lab_ifrs-full_ProductsAndServicesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Products and services [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProductsAndServicesAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProductsAndServicesAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProductsAndServicesAxis" xlink:to="lab_ifrs-full_ProductsAndServicesAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FinancialLiabilities_019b46bd-0715-727d-a8d6-f2076d811fb7_negatedTotalLabel_en-US" xlink:label="lab_ifrs-full_FinancialLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ifrs-full_FinancialLiabilities_019b46bd-0715-717f-a0f5-f67d52353468_terseLabel_en-US" xlink:label="lab_ifrs-full_FinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Liabilities</link:label>
    <link:label id="lab_ifrs-full_FinancialLiabilities_019b46bd-0715-7726-bf3e-bbafa1771b3d_totalLabel_en-US" xlink:label="lab_ifrs-full_FinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ifrs-full_FinancialLiabilities_label_en-US" xlink:label="lab_ifrs-full_FinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FinancialLiabilities" xlink:to="lab_ifrs-full_FinancialLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NonCurrentTradeReceivablesInterCompany_019b46bd-053c-7057-b969-72914b46e2df_terseLabel_en-US" xlink:label="lab_ck0000932782_NonCurrentTradeReceivablesInterCompany" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term receivables&#8212;intercompany</link:label>
    <link:label id="lab_ck0000932782_NonCurrentTradeReceivablesInterCompany_label_en-US" xlink:label="lab_ck0000932782_NonCurrentTradeReceivablesInterCompany" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non current Trade Receivables Inter Company</link:label>
    <link:label id="lab_ck0000932782_NonCurrentTradeReceivablesInterCompany_documentation_en-US" xlink:label="lab_ck0000932782_NonCurrentTradeReceivablesInterCompany" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Non current trade receivables inter company.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NonCurrentTradeReceivablesInterCompany" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NonCurrentTradeReceivablesInterCompany"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NonCurrentTradeReceivablesInterCompany" xlink:to="lab_ck0000932782_NonCurrentTradeReceivablesInterCompany" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncomeTaxExpenseContinuingOperations_019b46bd-05e4-7820-a468-91a3c3acd4ed_totalLabel_en-US" xlink:label="lab_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total duties, taxes and other</link:label>
    <link:label id="lab_ifrs-full_IncomeTaxExpenseContinuingOperations_label_en-US" xlink:label="lab_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tax expense (income)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:to="lab_ifrs-full_IncomeTaxExpenseContinuingOperations" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfOtherProvisionsAbstract_019b46bd-0684-7606-a6b4-e577a9d52d2c_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfOtherProvisionsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of other provisions [abstract]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfOtherProvisionsAbstract_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfOtherProvisionsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of other provisions [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfOtherProvisionsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOtherProvisionsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfOtherProvisionsAbstract" xlink:to="lab_ifrs-full_DisclosureOfOtherProvisionsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ThirtyDaysSOFRPlus425BasisPointsMember_019b46bd-05e4-7706-a5b2-dcfe840f18d1_terseLabel_en-US" xlink:label="lab_ck0000932782_ThirtyDaysSOFRPlus425BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Thirty Days SOFR Plus 425 Basis Points</link:label>
    <link:label id="lab_ck0000932782_ThirtyDaysSOFRPlus425BasisPointsMember_label_en-US" xlink:label="lab_ck0000932782_ThirtyDaysSOFRPlus425BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Thirty Days SOFR Plus 425 Basis Points [Member]</link:label>
    <link:label id="lab_ck0000932782_ThirtyDaysSOFRPlus425BasisPointsMember_documentation_en-US" xlink:label="lab_ck0000932782_ThirtyDaysSOFRPlus425BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Thirty Days SOFR Plus 425 Basis Points</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ThirtyDaysSOFRPlus425BasisPointsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ThirtyDaysSOFRPlus425BasisPointsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ThirtyDaysSOFRPlus425BasisPointsMember" xlink:to="lab_ck0000932782_ThirtyDaysSOFRPlus425BasisPointsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherExpensesMember_019b46bd-0715-7db7-b22e-da0919332755_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherExpensesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Expenses</link:label>
    <link:label id="lab_ck0000932782_OtherExpensesMember_label_en-US" xlink:label="lab_ck0000932782_OtherExpensesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Expenses [Member]</link:label>
    <link:label id="lab_ck0000932782_OtherExpensesMember_documentation_en-US" xlink:label="lab_ck0000932782_OtherExpensesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Expenses</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherExpensesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherExpensesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherExpensesMember" xlink:to="lab_ck0000932782_OtherExpensesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2025Member_019b46bd-05e4-7568-a335-465bb2f7cece_terseLabel_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2025Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Two, January 2025</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2025Member_label_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2025Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Two, January 2025 [Member]</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2025Member_documentation_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2025Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Two, January 2025</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2025Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2025Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2025Member" xlink:to="lab_ck0000932782_StrengtheningOfFinancialPositionTwoJanuary2025Member" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_DocumentTransitionReport_019b46bd-0684-7b1c-ba5b-f0127dc5e6e7_terseLabel_en-US" xlink:label="lab_dei_DocumentTransitionReport" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Transition Report</link:label>
    <link:label id="lab_dei_DocumentTransitionReport_label_en-US" xlink:label="lab_dei_DocumentTransitionReport" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Transition Report</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentTransitionReport" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentTransitionReport"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentTransitionReport" xlink:to="lab_dei_DocumentTransitionReport" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TranslationEffectFromTheConsolidatedEquityMethod_019b46bd-053c-72ce-8566-5ff7225640bf_terseLabel_en-US" xlink:label="lab_ck0000932782_TranslationEffectFromTheConsolidatedEquityMethod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Translation effect from the consolidated equity method</link:label>
    <link:label id="lab_ck0000932782_TranslationEffectFromTheConsolidatedEquityMethod_label_en-US" xlink:label="lab_ck0000932782_TranslationEffectFromTheConsolidatedEquityMethod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Translation Effect From the Consolidated Equity Method</link:label>
    <link:label id="lab_ck0000932782_TranslationEffectFromTheConsolidatedEquityMethod_documentation_en-US" xlink:label="lab_ck0000932782_TranslationEffectFromTheConsolidatedEquityMethod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Translation Effect From the Consolidated Equity Method</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TranslationEffectFromTheConsolidatedEquityMethod" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TranslationEffectFromTheConsolidatedEquityMethod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TranslationEffectFromTheConsolidatedEquityMethod" xlink:to="lab_ck0000932782_TranslationEffectFromTheConsolidatedEquityMethod" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NumberOfInterestRateSwapAgreements_019b46bd-0715-7cc1-85e7-910e3b63611b_terseLabel_en-US" xlink:label="lab_ck0000932782_NumberOfInterestRateSwapAgreements" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of interest rate swap agreements</link:label>
    <link:label id="lab_ck0000932782_NumberOfInterestRateSwapAgreements_label_en-US" xlink:label="lab_ck0000932782_NumberOfInterestRateSwapAgreements" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of interest rate swap agreements</link:label>
    <link:label id="lab_ck0000932782_NumberOfInterestRateSwapAgreements_documentation_en-US" xlink:label="lab_ck0000932782_NumberOfInterestRateSwapAgreements" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of interest rate swap agreements.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NumberOfInterestRateSwapAgreements" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NumberOfInterestRateSwapAgreements"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NumberOfInterestRateSwapAgreements" xlink:to="lab_ck0000932782_NumberOfInterestRateSwapAgreements" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_Equipment1Member_019b46bd-0684-70b7-8fa5-468ac8c9af62_terseLabel_en-US" xlink:label="lab_ck0000932782_Equipment1Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Machinery and Equipment</link:label>
    <link:label id="lab_ck0000932782_Equipment1Member_label_en-US" xlink:label="lab_ck0000932782_Equipment1Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equipment1 [Member]</link:label>
    <link:label id="lab_ck0000932782_Equipment1Member_documentation_en-US" xlink:label="lab_ck0000932782_Equipment1Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Equipment1</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_Equipment1Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_Equipment1Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_Equipment1Member" xlink:to="lab_ck0000932782_Equipment1Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LeaseLiabilitiesPayments_019b46bd-0715-7927-9508-b934d3878805_terseLabel_en-US" xlink:label="lab_ck0000932782_LeaseLiabilitiesPayments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payments of principal</link:label>
    <link:label id="lab_ck0000932782_LeaseLiabilitiesPayments_label_en-US" xlink:label="lab_ck0000932782_LeaseLiabilitiesPayments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Liabilities Payments</link:label>
    <link:label id="lab_ck0000932782_LeaseLiabilitiesPayments_documentation_en-US" xlink:label="lab_ck0000932782_LeaseLiabilitiesPayments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease liabilities payments.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LeaseLiabilitiesPayments" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LeaseLiabilitiesPayments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LeaseLiabilitiesPayments" xlink:to="lab_ck0000932782_LeaseLiabilitiesPayments" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfDefinedBenefitPlansLineItems_019b46bd-053d-73a0-aecf-46a971c05e6d_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDefinedBenefitPlansLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of defined benefit plans [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDefinedBenefitPlansLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDefinedBenefitPlansLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of defined benefit plans [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDefinedBenefitPlansLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDefinedBenefitPlansLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfDefinedBenefitPlansLineItems" xlink:to="lab_ifrs-full_DisclosureOfDefinedBenefitPlansLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdministrativeExpense_019b46bd-0715-7955-a1cc-482f0904e980_terseLabel_en-US" xlink:label="lab_ifrs-full_AdministrativeExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Administrative expenses</link:label>
    <link:label id="lab_ifrs-full_AdministrativeExpense_label_en-US" xlink:label="lab_ifrs-full_AdministrativeExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Administrative expenses</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdministrativeExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdministrativeExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdministrativeExpense" xlink:to="lab_ifrs-full_AdministrativeExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_MaturityAxis_019b46bd-045f-7c59-a952-903f5683cfba_terseLabel_en-US" xlink:label="lab_ifrs-full_MaturityAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maturity [axis]</link:label>
    <link:label id="lab_ifrs-full_MaturityAxis_label_en-US" xlink:label="lab_ifrs-full_MaturityAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maturity [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MaturityAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MaturityAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_MaturityAxis" xlink:to="lab_ifrs-full_MaturityAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember_019b46bd-05e4-7200-9928-0d0ccd8b2855_terseLabel_en-US" xlink:label="lab_ifrs-full_InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">FVOCI &#8211; equity instruments</link:label>
    <link:label id="lab_ifrs-full_InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember_label_en-US" xlink:label="lab_ifrs-full_InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments in equity instruments designated at fair value through other comprehensive income [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember" xlink:to="lab_ifrs-full_InvestmentsInEquityInstrumentsMeasuredAtFairValueThroughOtherComprehensiveIncomeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PercentageOfProductionArea_019b46bd-053d-7be7-8301-716cad4507b1_terseLabel_en-US" xlink:label="lab_ck0000932782_PercentageOfProductionArea" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of production area</link:label>
    <link:label id="lab_ck0000932782_PercentageOfProductionArea_label_en-US" xlink:label="lab_ck0000932782_PercentageOfProductionArea" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage of Production area</link:label>
    <link:label id="lab_ck0000932782_PercentageOfProductionArea_documentation_en-US" xlink:label="lab_ck0000932782_PercentageOfProductionArea" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of Production area.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PercentageOfProductionArea" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PercentageOfProductionArea"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PercentageOfProductionArea" xlink:to="lab_ck0000932782_PercentageOfProductionArea" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IndustrialDieselMember_019b46bd-0684-75a4-8475-99f589957fd3_terseLabel_en-US" xlink:label="lab_ck0000932782_IndustrialDieselMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Industrial diesel</link:label>
    <link:label id="lab_ck0000932782_IndustrialDieselMember_label_en-US" xlink:label="lab_ck0000932782_IndustrialDieselMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Industrial diesel [member]</link:label>
    <link:label id="lab_ck0000932782_IndustrialDieselMember_documentation_en-US" xlink:label="lab_ck0000932782_IndustrialDieselMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Industrial diesel.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IndustrialDieselMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IndustrialDieselMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IndustrialDieselMember" xlink:to="lab_ck0000932782_IndustrialDieselMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MisionCEEMember_019b46bd-053c-72d1-b20c-f0358c7af531_terseLabel_en-US" xlink:label="lab_ck0000932782_MisionCEEMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Misi&#243;n (CEE)</link:label>
    <link:label id="lab_ck0000932782_MisionCEEMember_label_en-US" xlink:label="lab_ck0000932782_MisionCEEMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mision (CEE) [Member]</link:label>
    <link:label id="lab_ck0000932782_MisionCEEMember_documentation_en-US" xlink:label="lab_ck0000932782_MisionCEEMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Mision (CEE)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MisionCEEMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MisionCEEMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MisionCEEMember" xlink:to="lab_ck0000932782_MisionCEEMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LongTermDebtRepaymentObligation_019b46bd-05e4-7d76-9662-b49e8fccb427_terseLabel_en-US" xlink:label="lab_ck0000932782_LongTermDebtRepaymentObligation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt payments</link:label>
    <link:label id="lab_ck0000932782_LongTermDebtRepaymentObligation_label_en-US" xlink:label="lab_ck0000932782_LongTermDebtRepaymentObligation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long term debt repayment obligation</link:label>
    <link:label id="lab_ck0000932782_LongTermDebtRepaymentObligation_documentation_en-US" xlink:label="lab_ck0000932782_LongTermDebtRepaymentObligation" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Long term debt repayment obligation</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LongTermDebtRepaymentObligation" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LongTermDebtRepaymentObligation"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LongTermDebtRepaymentObligation" xlink:to="lab_ck0000932782_LongTermDebtRepaymentObligation" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProcessedVolume_019b46bd-053d-7176-a899-1fb223456b8a_terseLabel_en-US" xlink:label="lab_ck0000932782_ProcessedVolume" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Processed volume (millions per day)</link:label>
    <link:label id="lab_ck0000932782_ProcessedVolume_label_en-US" xlink:label="lab_ck0000932782_ProcessedVolume" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Processed Volume</link:label>
    <link:label id="lab_ck0000932782_ProcessedVolume_documentation_en-US" xlink:label="lab_ck0000932782_ProcessedVolume" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Processed volume.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProcessedVolume" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProcessedVolume"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProcessedVolume" xlink:to="lab_ck0000932782_ProcessedVolume" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_DocumentType_019b46bd-053c-709f-82f2-84a39132709e_terseLabel_en-US" xlink:label="lab_dei_DocumentType" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Type</link:label>
    <link:label id="lab_dei_DocumentType_label_en-US" xlink:label="lab_dei_DocumentType" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Type</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentType" xlink:to="lab_dei_DocumentType" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DecreaseMember_019b46bd-05e4-7da8-9879-24a248895ff3_terseLabel_en-US" xlink:label="lab_ck0000932782_DecreaseMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Decrease</link:label>
    <link:label id="lab_ck0000932782_DecreaseMember_label_en-US" xlink:label="lab_ck0000932782_DecreaseMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Decrease [member]</link:label>
    <link:label id="lab_ck0000932782_DecreaseMember_documentation_en-US" xlink:label="lab_ck0000932782_DecreaseMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Decrease.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DecreaseMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DecreaseMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DecreaseMember" xlink:to="lab_ck0000932782_DecreaseMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProceedsAndPaymentsOfOtherAssetsAndOtherReceivable_019b46bd-05e4-75a2-bf2f-fd0c733c1043_terseLabel_en-US" xlink:label="lab_ck0000932782_ProceedsAndPaymentsOfOtherAssetsAndOtherReceivable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other assets and other receivables</link:label>
    <link:label id="lab_ck0000932782_ProceedsAndPaymentsOfOtherAssetsAndOtherReceivable_label_en-US" xlink:label="lab_ck0000932782_ProceedsAndPaymentsOfOtherAssetsAndOtherReceivable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds And Payments Of Other Assets And Other Receivable</link:label>
    <link:label id="lab_ck0000932782_ProceedsAndPaymentsOfOtherAssetsAndOtherReceivable_documentation_en-US" xlink:label="lab_ck0000932782_ProceedsAndPaymentsOfOtherAssetsAndOtherReceivable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Proceeds and payments of other assets and other receivable.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProceedsAndPaymentsOfOtherAssetsAndOtherReceivable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProceedsAndPaymentsOfOtherAssetsAndOtherReceivable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProceedsAndPaymentsOfOtherAssetsAndOtherReceivable" xlink:to="lab_ck0000932782_ProceedsAndPaymentsOfOtherAssetsAndOtherReceivable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PaymentsOfProfitSharingDuty_019b46bd-0684-782b-b00e-a30a7f7ca2f4_terseLabel_en-US" xlink:label="lab_ck0000932782_PaymentsOfProfitSharingDuty" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Profit sharing duty monthly installment</link:label>
    <link:label id="lab_ck0000932782_PaymentsOfProfitSharingDuty_label_en-US" xlink:label="lab_ck0000932782_PaymentsOfProfitSharingDuty" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments Of Profit-Sharing Duty</link:label>
    <link:label id="lab_ck0000932782_PaymentsOfProfitSharingDuty_documentation_en-US" xlink:label="lab_ck0000932782_PaymentsOfProfitSharingDuty" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Profit- sharing duty monthly installment.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PaymentsOfProfitSharingDuty" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PaymentsOfProfitSharingDuty"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PaymentsOfProfitSharingDuty" xlink:to="lab_ck0000932782_PaymentsOfProfitSharingDuty" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsOtherThanGoodwill_019b46bd-0684-76ee-91c5-3418d784a4f3_terseLabel_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Effects of foreign exchange</link:label>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsOtherThanGoodwill_label_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (decrease) through net exchange differences, intangible assets other than goodwill</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsOtherThanGoodwill" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsOtherThanGoodwill"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsOtherThanGoodwill" xlink:to="lab_ifrs-full_IncreaseDecreaseThroughNetExchangeDifferencesIntangibleAssetsOtherThanGoodwill" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncomeStatementAbstract_019b46bd-053c-7bdf-83ef-412a5ee7324d_terseLabel_en-US" xlink:label="lab_ifrs-full_IncomeStatementAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Profit or loss [abstract]</link:label>
    <link:label id="lab_ifrs-full_IncomeStatementAbstract_label_en-US" xlink:label="lab_ifrs-full_IncomeStatementAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit or loss [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeStatementAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncomeStatementAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncomeStatementAbstract" xlink:to="lab_ifrs-full_IncomeStatementAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InitialExpectedEquityContributionsByOwners_019d3d8f-4540-7cc5-9a5e-2b8cea266575_terseLabel_en-US" xlink:label="lab_ck0000932782_InitialExpectedEquityContributionsByOwners" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Initial expected equity contributions by owners</link:label>
    <link:label id="lab_ck0000932782_InitialExpectedEquityContributionsByOwners_label_en-US" xlink:label="lab_ck0000932782_InitialExpectedEquityContributionsByOwners" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Initial Expected Equity Contributions By Owners</link:label>
    <link:label id="lab_ck0000932782_InitialExpectedEquityContributionsByOwners_documentation_en-US" xlink:label="lab_ck0000932782_InitialExpectedEquityContributionsByOwners" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Initial Expected Equity Contributions By Owners</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InitialExpectedEquityContributionsByOwners" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InitialExpectedEquityContributionsByOwners"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InitialExpectedEquityContributionsByOwners" xlink:to="lab_ck0000932782_InitialExpectedEquityContributionsByOwners" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsExplanatory_019b46bd-053d-7dba-b971-708e992fab5e_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assumptions to Determine Net Present Value of Reserves Long Lived Assets</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of significant unobservable inputs used in fair value measurement of assets [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IncreaseInLongTermContractualLiabilities_019da9a8-92fd-725a-9e0a-4f5eed2d8f93_terseLabel_en-US" xlink:label="lab_ck0000932782_IncreaseInLongTermContractualLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase in long-term contractual liabilities</link:label>
    <link:label id="lab_ck0000932782_IncreaseInLongTermContractualLiabilities_label_en-US" xlink:label="lab_ck0000932782_IncreaseInLongTermContractualLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase In Long-Term Contractual Liabilities</link:label>
    <link:label id="lab_ck0000932782_IncreaseInLongTermContractualLiabilities_documentation_en-US" xlink:label="lab_ck0000932782_IncreaseInLongTermContractualLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Increase In Long-Term Contractual Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncreaseInLongTermContractualLiabilities" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncreaseInLongTermContractualLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IncreaseInLongTermContractualLiabilities" xlink:to="lab_ck0000932782_IncreaseInLongTermContractualLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_019b46bd-0715-76bd-9f28-968efd879e0a_terseLabel_en-US" xlink:label="lab_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Types of share-based payment arrangements</link:label>
    <link:label id="lab_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain_label_en-US" xlink:label="lab_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Types of share-based payment arrangements [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfSharebasedPaymentArrangementsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain" xlink:to="lab_ifrs-full_TypesOfSharebasedPaymentArrangementsDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DerivativeFinancialAssetsLiabilities_019b46bd-0684-77e9-8cbc-31f80a5c6b87_verboseLabel_en-US" xlink:label="lab_ck0000932782_DerivativeFinancialAssetsLiabilities" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net total</link:label>
    <link:label id="lab_ck0000932782_DerivativeFinancialAssetsLiabilities_label_en-US" xlink:label="lab_ck0000932782_DerivativeFinancialAssetsLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative Financial Assets (Liabilities)</link:label>
    <link:label id="lab_ck0000932782_DerivativeFinancialAssetsLiabilities_documentation_en-US" xlink:label="lab_ck0000932782_DerivativeFinancialAssetsLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivative Financial Assets (Liabilities)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DerivativeFinancialAssetsLiabilities" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DerivativeFinancialAssetsLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DerivativeFinancialAssetsLiabilities" xlink:to="lab_ck0000932782_DerivativeFinancialAssetsLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_EquityAttributableToOwnersOfParent_019b46bd-0684-746d-b128-fc307be3898a_totalLabel_en-US" xlink:label="lab_ifrs-full_EquityAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total controlling interest</link:label>
    <link:label id="lab_ifrs-full_EquityAttributableToOwnersOfParent_label_en-US" xlink:label="lab_ifrs-full_EquityAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity attributable to owners of parent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAttributableToOwnersOfParent" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_EquityAttributableToOwnersOfParent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParent" xlink:to="lab_ifrs-full_EquityAttributableToOwnersOfParent" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PercentageIncreaseDecreaseInPriceOfTheMexicanCrudeOilExportMixPerBarrel_019b46bd-0715-75c7-90a4-465b2dd575c9_verboseLabel_en-US" xlink:label="lab_ck0000932782_PercentageIncreaseDecreaseInPriceOfTheMexicanCrudeOilExportMixPerBarrel" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Percentage increase decrease in price of the Mexican crude oil export mix per barrel</link:label>
    <link:label id="lab_ck0000932782_PercentageIncreaseDecreaseInPriceOfTheMexicanCrudeOilExportMixPerBarrel_label_en-US" xlink:label="lab_ck0000932782_PercentageIncreaseDecreaseInPriceOfTheMexicanCrudeOilExportMixPerBarrel" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage increase decrease in price of the Mexican crude oil export mix per barrel</link:label>
    <link:label id="lab_ck0000932782_PercentageIncreaseDecreaseInPriceOfTheMexicanCrudeOilExportMixPerBarrel_documentation_en-US" xlink:label="lab_ck0000932782_PercentageIncreaseDecreaseInPriceOfTheMexicanCrudeOilExportMixPerBarrel" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage increase decrease in price of the Mexican crude oil export mix per barrel.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PercentageIncreaseDecreaseInPriceOfTheMexicanCrudeOilExportMixPerBarrel" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PercentageIncreaseDecreaseInPriceOfTheMexicanCrudeOilExportMixPerBarrel"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PercentageIncreaseDecreaseInPriceOfTheMexicanCrudeOilExportMixPerBarrel" xlink:to="lab_ck0000932782_PercentageIncreaseDecreaseInPriceOfTheMexicanCrudeOilExportMixPerBarrel" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ComponentsOfEquityAxis_019b46bd-0715-7ee7-945f-659c0e010506_terseLabel_en-US" xlink:label="lab_ifrs-full_ComponentsOfEquityAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Components of equity [axis]</link:label>
    <link:label id="lab_ifrs-full_ComponentsOfEquityAxis_label_en-US" xlink:label="lab_ifrs-full_ComponentsOfEquityAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Components of equity [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComponentsOfEquityAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ComponentsOfEquityAxis" xlink:to="lab_ifrs-full_ComponentsOfEquityAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AdditionalLossForFairProfitOnContingencyDamagesClaims_019c758e-b1c0-7740-8358-6384ab2e8bfb_terseLabel_en-US" xlink:label="lab_ck0000932782_AdditionalLossForFairProfitOnContingencyDamagesClaims" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additional loss for fair profit on contingency damages claims</link:label>
    <link:label id="lab_ck0000932782_AdditionalLossForFairProfitOnContingencyDamagesClaims_label_en-US" xlink:label="lab_ck0000932782_AdditionalLossForFairProfitOnContingencyDamagesClaims" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additional Loss For Fair Profit On Contingency Damages Claims</link:label>
    <link:label id="lab_ck0000932782_AdditionalLossForFairProfitOnContingencyDamagesClaims_documentation_en-US" xlink:label="lab_ck0000932782_AdditionalLossForFairProfitOnContingencyDamagesClaims" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Additional Loss For Fair Profit On Contingency Damages Claims</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AdditionalLossForFairProfitOnContingencyDamagesClaims" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AdditionalLossForFairProfitOnContingencyDamagesClaims"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AdditionalLossForFairProfitOnContingencyDamagesClaims" xlink:to="lab_ck0000932782_AdditionalLossForFairProfitOnContingencyDamagesClaims" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ComplementaryIncentiveOfDomesticSales_019b46bd-05e4-7c45-a3b0-d94f948ed0f1_verboseLabel_en-US" xlink:label="lab_ck0000932782_ComplementaryIncentiveOfDomesticSales" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Incentive for automotive fuels</link:label>
    <link:label id="lab_ck0000932782_ComplementaryIncentiveOfDomesticSales_019b46bd-05e4-78cb-829a-30ca68518f1a_terseLabel_en-US" xlink:label="lab_ck0000932782_ComplementaryIncentiveOfDomesticSales" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Incentive for automotive fuels (see Notes 3-S and 7-E)</link:label>
    <link:label id="lab_ck0000932782_ComplementaryIncentiveOfDomesticSales_label_en-US" xlink:label="lab_ck0000932782_ComplementaryIncentiveOfDomesticSales" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Complementary Incentive Of Domestic Sales</link:label>
    <link:label id="lab_ck0000932782_ComplementaryIncentiveOfDomesticSales_documentation_en-US" xlink:label="lab_ck0000932782_ComplementaryIncentiveOfDomesticSales" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Complementary Incentive Of Domestic Sales</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ComplementaryIncentiveOfDomesticSales" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ComplementaryIncentiveOfDomesticSales"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ComplementaryIncentiveOfDomesticSales" xlink:to="lab_ck0000932782_ComplementaryIncentiveOfDomesticSales" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InventoriesRecognizedAsCostOfSales_019b46bd-053d-7185-ab76-6b64ff8cb43e_terseLabel_en-US" xlink:label="lab_ck0000932782_InventoriesRecognizedAsCostOfSales" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventories recognized as cost of sales</link:label>
    <link:label id="lab_ck0000932782_InventoriesRecognizedAsCostOfSales_label_en-US" xlink:label="lab_ck0000932782_InventoriesRecognizedAsCostOfSales" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventories Recognized as Cost of Sales</link:label>
    <link:label id="lab_ck0000932782_InventoriesRecognizedAsCostOfSales_documentation_en-US" xlink:label="lab_ck0000932782_InventoriesRecognizedAsCostOfSales" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Inventories recognized as cost of sales.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InventoriesRecognizedAsCostOfSales" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InventoriesRecognizedAsCostOfSales"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InventoriesRecognizedAsCostOfSales" xlink:to="lab_ck0000932782_InventoriesRecognizedAsCostOfSales" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PositiveEffectFromDecreaseInProduction_019b46bd-0684-76fa-aec0-3df16087e172_terseLabel_en-US" xlink:label="lab_ck0000932782_PositiveEffectFromDecreaseInProduction" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Positive effect from decrease in production</link:label>
    <link:label id="lab_ck0000932782_PositiveEffectFromDecreaseInProduction_label_en-US" xlink:label="lab_ck0000932782_PositiveEffectFromDecreaseInProduction" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Positive Effect From Decrease In Production</link:label>
    <link:label id="lab_ck0000932782_PositiveEffectFromDecreaseInProduction_documentation_en-US" xlink:label="lab_ck0000932782_PositiveEffectFromDecreaseInProduction" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Positive effect from decrease in production.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PositiveEffectFromDecreaseInProduction" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PositiveEffectFromDecreaseInProduction"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PositiveEffectFromDecreaseInProduction" xlink:to="lab_ck0000932782_PositiveEffectFromDecreaseInProduction" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AccountDebugging_019b46bd-0684-7aed-8989-172f6c4e9682_terseLabel_en-US" xlink:label="lab_ck0000932782_AccountDebugging" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Account debugging</link:label>
    <link:label id="lab_ck0000932782_AccountDebugging_label_en-US" xlink:label="lab_ck0000932782_AccountDebugging" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Account Debugging</link:label>
    <link:label id="lab_ck0000932782_AccountDebugging_documentation_en-US" xlink:label="lab_ck0000932782_AccountDebugging" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Account debugging.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AccountDebugging" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AccountDebugging"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AccountDebugging" xlink:to="lab_ck0000932782_AccountDebugging" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_StatementOperatingSegment1Domain_019bda49-e19e-73d2-9ec9-3520ae1c6404_terseLabel_en-US" xlink:label="lab_ck0000932782_StatementOperatingSegment1Domain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement Operating Segment1 [Domain]</link:label>
    <link:label id="lab_ck0000932782_StatementOperatingSegment1Domain_label_en-US" xlink:label="lab_ck0000932782_StatementOperatingSegment1Domain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement Operating Segment1 [Domain]</link:label>
    <link:label id="lab_ck0000932782_StatementOperatingSegment1Domain_documentation_en-US" xlink:label="lab_ck0000932782_StatementOperatingSegment1Domain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Statement Operating Segment1 [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StatementOperatingSegment1Domain" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StatementOperatingSegment1Domain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_StatementOperatingSegment1Domain" xlink:to="lab_ck0000932782_StatementOperatingSegment1Domain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InterestsPaidClassifiedAsFinancingActivities_019b46bd-053c-7622-bf2b-90b7aabb9648_terseLabel_en-US" xlink:label="lab_ck0000932782_InterestsPaidClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing cost</link:label>
    <link:label id="lab_ck0000932782_InterestsPaidClassifiedAsFinancingActivities_019b46bd-053c-72d3-a61f-accb2d0cb0bd_verboseLabel_en-US" xlink:label="lab_ck0000932782_InterestsPaidClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Financing cost</link:label>
    <link:label id="lab_ck0000932782_InterestsPaidClassifiedAsFinancingActivities_label_en-US" xlink:label="lab_ck0000932782_InterestsPaidClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interests Paid Classified As Financing Activities</link:label>
    <link:label id="lab_ck0000932782_InterestsPaidClassifiedAsFinancingActivities_documentation_en-US" xlink:label="lab_ck0000932782_InterestsPaidClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interests paid classified as financing activities.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterestsPaidClassifiedAsFinancingActivities" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterestsPaidClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterestsPaidClassifiedAsFinancingActivities" xlink:to="lab_ck0000932782_InterestsPaidClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset_019b46bd-053d-7c96-bea5-3d431d656401_negatedLabel_en-US" xlink:label="lab_ifrs-full_ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">For experience during the year</link:label>
    <link:label id="lab_ifrs-full_ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset_label_en-US" xlink:label="lab_ifrs-full_ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Decrease (increase) in net defined benefit liability (asset) resulting from actuarial gains (losses) arising from experience adjustments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset" xlink:to="lab_ifrs-full_ActuarialGainsLossesArisingFromExperienceAdjustmentsNetDefinedBenefitLiabilityAsset" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MasterTrustMember_019b46bd-05e4-7eba-afdc-8caaf54f1e60_terseLabel_en-US" xlink:label="lab_ck0000932782_MasterTrustMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Master Trust</link:label>
    <link:label id="lab_ck0000932782_MasterTrustMember_label_en-US" xlink:label="lab_ck0000932782_MasterTrustMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Master Trust [member]</link:label>
    <link:label id="lab_ck0000932782_MasterTrustMember_documentation_en-US" xlink:label="lab_ck0000932782_MasterTrustMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Master trust.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MasterTrustMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MasterTrustMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MasterTrustMember" xlink:to="lab_ck0000932782_MasterTrustMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CategoriesOfRelatedPartiesDomain_019b46bd-0684-7b1d-b988-0f9f5f7ec188_terseLabel_en-US" xlink:label="lab_ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Categories of related parties</link:label>
    <link:label id="lab_ifrs-full_CategoriesOfRelatedPartiesDomain_label_en-US" xlink:label="lab_ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Categories of related parties [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:to="lab_ifrs-full_CategoriesOfRelatedPartiesDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherCurrentAssets_019b46bd-0684-782a-aed8-91cf661e373b_verboseLabel_en-US" xlink:label="lab_ifrs-full_OtherCurrentAssets" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other current assets</link:label>
    <link:label id="lab_ifrs-full_OtherCurrentAssets_label_en-US" xlink:label="lab_ifrs-full_OtherCurrentAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other current assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCurrentAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherCurrentAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherCurrentAssets" xlink:to="lab_ifrs-full_OtherCurrentAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NetCarryingAmountMember_019b46bd-05e4-7c0a-afbb-6d35fca59a22_verboseLabel_en-US" xlink:label="lab_ck0000932782_NetCarryingAmountMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total Carrying Value</link:label>
    <link:label id="lab_ck0000932782_NetCarryingAmountMember_label_en-US" xlink:label="lab_ck0000932782_NetCarryingAmountMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Carrying Amount [member]</link:label>
    <link:label id="lab_ck0000932782_NetCarryingAmountMember_documentation_en-US" xlink:label="lab_ck0000932782_NetCarryingAmountMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net carrying amount.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NetCarryingAmountMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NetCarryingAmountMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NetCarryingAmountMember" xlink:to="lab_ck0000932782_NetCarryingAmountMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ActuarialAssumptionOfBasicBasketForRetiredPersonnelMember_019b46bd-0715-7e03-bf20-5beeb3b4cfa1_terseLabel_en-US" xlink:label="lab_ck0000932782_ActuarialAssumptionOfBasicBasketForRetiredPersonnelMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rate of increase in basic basket for retired personnel</link:label>
    <link:label id="lab_ck0000932782_ActuarialAssumptionOfBasicBasketForRetiredPersonnelMember_label_en-US" xlink:label="lab_ck0000932782_ActuarialAssumptionOfBasicBasketForRetiredPersonnelMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Actuarial assumption of basic basket for retired personnel [member]</link:label>
    <link:label id="lab_ck0000932782_ActuarialAssumptionOfBasicBasketForRetiredPersonnelMember_documentation_en-US" xlink:label="lab_ck0000932782_ActuarialAssumptionOfBasicBasketForRetiredPersonnelMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Actuarial assumption of basic basket for retired personnel.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ActuarialAssumptionOfBasicBasketForRetiredPersonnelMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ActuarialAssumptionOfBasicBasketForRetiredPersonnelMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ActuarialAssumptionOfBasicBasketForRetiredPersonnelMember" xlink:to="lab_ck0000932782_ActuarialAssumptionOfBasicBasketForRetiredPersonnelMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract_019b46bd-0715-7b91-8888-a2a78a1666f5_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of disaggregation of revenue from contracts with customers [abstract]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of disaggregation of revenue from contracts with customers [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract" xlink:to="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FurnitureAndEquipmentMember_019b46bd-05e4-7784-b136-f67e637ca29f_terseLabel_en-US" xlink:label="lab_ck0000932782_FurnitureAndEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Furniture and equipment</link:label>
    <link:label id="lab_ck0000932782_FurnitureAndEquipmentMember_label_en-US" xlink:label="lab_ck0000932782_FurnitureAndEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Furniture and Equipment [member]</link:label>
    <link:label id="lab_ck0000932782_FurnitureAndEquipmentMember_documentation_en-US" xlink:label="lab_ck0000932782_FurnitureAndEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Furniture and equipment.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FurnitureAndEquipmentMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FurnitureAndEquipmentMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FurnitureAndEquipmentMember" xlink:to="lab_ck0000932782_FurnitureAndEquipmentMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AdjustmentsForDecreaseIncreaseInTradeAccountsReceivableAccountsPayableDerivativeFinancialInstrumentsAndAccruedLiabilities_019b46bd-0715-77ad-86ba-d836598a803b_terseLabel_en-US" xlink:label="lab_ck0000932782_AdjustmentsForDecreaseIncreaseInTradeAccountsReceivableAccountsPayableDerivativeFinancialInstrumentsAndAccruedLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable, inventories, accounts payable, DFIs and provisions</link:label>
    <link:label id="lab_ck0000932782_AdjustmentsForDecreaseIncreaseInTradeAccountsReceivableAccountsPayableDerivativeFinancialInstrumentsAndAccruedLiabilities_label_en-US" xlink:label="lab_ck0000932782_AdjustmentsForDecreaseIncreaseInTradeAccountsReceivableAccountsPayableDerivativeFinancialInstrumentsAndAccruedLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments for decrease increase in trade accounts receivable, accounts payable, derivative financial instruments and accrued liabilities</link:label>
    <link:label id="lab_ck0000932782_AdjustmentsForDecreaseIncreaseInTradeAccountsReceivableAccountsPayableDerivativeFinancialInstrumentsAndAccruedLiabilities_documentation_en-US" xlink:label="lab_ck0000932782_AdjustmentsForDecreaseIncreaseInTradeAccountsReceivableAccountsPayableDerivativeFinancialInstrumentsAndAccruedLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Adjustments for decrease increase in trade accounts receivable, accounts payable, derivative financial instruments and accrued liabilities.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AdjustmentsForDecreaseIncreaseInTradeAccountsReceivableAccountsPayableDerivativeFinancialInstrumentsAndAccruedLiabilities" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AdjustmentsForDecreaseIncreaseInTradeAccountsReceivableAccountsPayableDerivativeFinancialInstrumentsAndAccruedLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AdjustmentsForDecreaseIncreaseInTradeAccountsReceivableAccountsPayableDerivativeFinancialInstrumentsAndAccruedLiabilities" xlink:to="lab_ck0000932782_AdjustmentsForDecreaseIncreaseInTradeAccountsReceivableAccountsPayableDerivativeFinancialInstrumentsAndAccruedLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_RestrictedCashJudicialSeizures_019b46bd-0684-7474-8a0f-362e924769a1_terseLabel_en-US" xlink:label="lab_ck0000932782_RestrictedCashJudicialSeizures" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted cash, judicial seizures</link:label>
    <link:label id="lab_ck0000932782_RestrictedCashJudicialSeizures_label_en-US" xlink:label="lab_ck0000932782_RestrictedCashJudicialSeizures" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Cash, Judicial Seizures</link:label>
    <link:label id="lab_ck0000932782_RestrictedCashJudicialSeizures_documentation_en-US" xlink:label="lab_ck0000932782_RestrictedCashJudicialSeizures" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Restricted Cash, Judicial Seizures</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RestrictedCashJudicialSeizures" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RestrictedCashJudicialSeizures"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_RestrictedCashJudicialSeizures" xlink:to="lab_ck0000932782_RestrictedCashJudicialSeizures" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_ConsolidationItemsDomain_019b46bd-0715-7404-8600-682bc6fcd2e6_terseLabel_en-US" xlink:label="lab_srt_ConsolidationItemsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consolidation Items [Domain]</link:label>
    <link:label id="lab_srt_ConsolidationItemsDomain_label_en-US" xlink:label="lab_srt_ConsolidationItemsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidation Items [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidationItemsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ConsolidationItemsDomain" xlink:to="lab_srt_ConsolidationItemsDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProvisionForEnvironmentalCostsAmountUsed_019b46bd-05e4-7745-9fcb-3be4007e837a_negatedLabel_en-US" xlink:label="lab_ck0000932782_ProvisionForEnvironmentalCostsAmountUsed" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Amount used</link:label>
    <link:label id="lab_ck0000932782_ProvisionForEnvironmentalCostsAmountUsed_label_en-US" xlink:label="lab_ck0000932782_ProvisionForEnvironmentalCostsAmountUsed" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provision For Environmental Costs Amount Used</link:label>
    <link:label id="lab_ck0000932782_ProvisionForEnvironmentalCostsAmountUsed_documentation_en-US" xlink:label="lab_ck0000932782_ProvisionForEnvironmentalCostsAmountUsed" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Provision for environmental costs deductions.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProvisionForEnvironmentalCostsAmountUsed" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProvisionForEnvironmentalCostsAmountUsed"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProvisionForEnvironmentalCostsAmountUsed" xlink:to="lab_ck0000932782_ProvisionForEnvironmentalCostsAmountUsed" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_AuditorLocation_019b46bd-0715-7860-af96-3058162cbacc_terseLabel_en-US" xlink:label="lab_dei_AuditorLocation" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Auditor Location</link:label>
    <link:label id="lab_dei_AuditorLocation_label_en-US" xlink:label="lab_dei_AuditorLocation" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Auditor Location</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AuditorLocation" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AuditorLocation"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AuditorLocation" xlink:to="lab_dei_AuditorLocation" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NumberOfBarrelsHedged_019b46bd-0715-7697-96ce-0d693ffcec4d_terseLabel_en-US" xlink:label="lab_ck0000932782_NumberOfBarrelsHedged" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of barrels hedged</link:label>
    <link:label id="lab_ck0000932782_NumberOfBarrelsHedged_label_en-US" xlink:label="lab_ck0000932782_NumberOfBarrelsHedged" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of barrels hedged</link:label>
    <link:label id="lab_ck0000932782_NumberOfBarrelsHedged_documentation_en-US" xlink:label="lab_ck0000932782_NumberOfBarrelsHedged" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of barrels hedged</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NumberOfBarrelsHedged" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NumberOfBarrelsHedged"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NumberOfBarrelsHedged" xlink:to="lab_ck0000932782_NumberOfBarrelsHedged" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CuencaDeMacuspanaMember_019b46bd-053d-75c1-a7ec-3d0ca5004b20_terseLabel_en-US" xlink:label="lab_ck0000932782_CuencaDeMacuspanaMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cuenca de Macuspana</link:label>
    <link:label id="lab_ck0000932782_CuencaDeMacuspanaMember_label_en-US" xlink:label="lab_ck0000932782_CuencaDeMacuspanaMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cuenca de Macuspana [Member]</link:label>
    <link:label id="lab_ck0000932782_CuencaDeMacuspanaMember_documentation_en-US" xlink:label="lab_ck0000932782_CuencaDeMacuspanaMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cuenca de Macuspana.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CuencaDeMacuspanaMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CuencaDeMacuspanaMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CuencaDeMacuspanaMember" xlink:to="lab_ck0000932782_CuencaDeMacuspanaMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OneToThreeYearMember_019b46bd-0715-7f39-b274-e586b73722d8_verboseLabel_en-US" xlink:label="lab_ck0000932782_OneToThreeYearMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">1-3 years</link:label>
    <link:label id="lab_ck0000932782_OneToThreeYearMember_label_en-US" xlink:label="lab_ck0000932782_OneToThreeYearMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">One to Three Year [member]</link:label>
    <link:label id="lab_ck0000932782_OneToThreeYearMember_documentation_en-US" xlink:label="lab_ck0000932782_OneToThreeYearMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">One to Three Year [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OneToThreeYearMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OneToThreeYearMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OneToThreeYearMember" xlink:to="lab_ck0000932782_OneToThreeYearMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_GasBurgosGasProcessorComplexMember_019bba4b-62a3-7903-86e4-836a0ac8f741_terseLabel_en-US" xlink:label="lab_ck0000932782_GasBurgosGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gas Burgos Gas Processor Complex</link:label>
    <link:label id="lab_ck0000932782_GasBurgosGasProcessorComplexMember_label_en-US" xlink:label="lab_ck0000932782_GasBurgosGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gas Burgos Gas Processor Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_GasBurgosGasProcessorComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_GasBurgosGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gas Burgos Gas Processor Complex</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GasBurgosGasProcessorComplexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GasBurgosGasProcessorComplexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_GasBurgosGasProcessorComplexMember" xlink:to="lab_ck0000932782_GasBurgosGasProcessorComplexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ForeignExchangeRateAxis_019b46bd-05e4-70cd-8c60-821c92b96486_terseLabel_en-US" xlink:label="lab_ck0000932782_ForeignExchangeRateAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign Exchange Rate [axis]</link:label>
    <link:label id="lab_ck0000932782_ForeignExchangeRateAxis_label_en-US" xlink:label="lab_ck0000932782_ForeignExchangeRateAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Exchange Rate [axis]</link:label>
    <link:label id="lab_ck0000932782_ForeignExchangeRateAxis_documentation_en-US" xlink:label="lab_ck0000932782_ForeignExchangeRateAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Foreign Exchange Rate [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ForeignExchangeRateAxis" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ForeignExchangeRateAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ForeignExchangeRateAxis" xlink:to="lab_ck0000932782_ForeignExchangeRateAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsLineItems_019b46bd-05e4-7ac0-8b11-d1cb629c9692_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsLineItems" xlink:to="lab_ifrs-full_DisclosureOfSignificantUnobservableInputsUsedInFairValueMeasurementOfAssetsLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DeferredTaxAssetsLossCarryforwards_019b46bd-053d-7796-8924-cfd4640d3d48_terseLabel_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsLossCarryforwards" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tax loss carry-forwards</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxAssetsLossCarryforwards_label_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsLossCarryforwards" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred tax assets loss carryforwards</link:label>
    <link:label id="lab_ck0000932782_DeferredTaxAssetsLossCarryforwards_documentation_en-US" xlink:label="lab_ck0000932782_DeferredTaxAssetsLossCarryforwards" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred tax assets loss carryforwards</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DeferredTaxAssetsLossCarryforwards" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DeferredTaxAssetsLossCarryforwards"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DeferredTaxAssetsLossCarryforwards" xlink:to="lab_ck0000932782_DeferredTaxAssetsLossCarryforwards" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEPlus400BasisPointsMember_019b46bd-0684-7287-b0fc-c29d7af1ee8a_terseLabel_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEPlus400BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE Plus 400 Basis Points</link:label>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEPlus400BasisPointsMember_label_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEPlus400BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE Plus 400 Basis Points [Member]</link:label>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEPlus400BasisPointsMember_documentation_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEPlus400BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE Plus 400 Basis Points</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TwentyEightDaysTIIEPlus400BasisPointsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TwentyEightDaysTIIEPlus400BasisPointsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TwentyEightDaysTIIEPlus400BasisPointsMember" xlink:to="lab_ck0000932782_TwentyEightDaysTIIEPlus400BasisPointsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_GainsLossesArisingFromSaleAndLeasebackTransactions_019b46bd-05e5-7866-95c6-9a1ee8d148df_terseLabel_en-US" xlink:label="lab_ifrs-full_GainsLossesArisingFromSaleAndLeasebackTransactions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cancellations</link:label>
    <link:label id="lab_ifrs-full_GainsLossesArisingFromSaleAndLeasebackTransactions_label_en-US" xlink:label="lab_ifrs-full_GainsLossesArisingFromSaleAndLeasebackTransactions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gains (losses) arising from sale and leaseback transactions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GainsLossesArisingFromSaleAndLeasebackTransactions" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GainsLossesArisingFromSaleAndLeasebackTransactions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_GainsLossesArisingFromSaleAndLeasebackTransactions" xlink:to="lab_ifrs-full_GainsLossesArisingFromSaleAndLeasebackTransactions" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherRevenueExpenseAbstract_019b46bd-05e4-7c49-9255-2c1c4b319c32_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherRevenueExpenseAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other revenues (expenses):</link:label>
    <link:label id="lab_ck0000932782_OtherRevenueExpenseAbstract_label_en-US" xlink:label="lab_ck0000932782_OtherRevenueExpenseAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Revenue Expense [Abstract]</link:label>
    <link:label id="lab_ck0000932782_OtherRevenueExpenseAbstract_documentation_en-US" xlink:label="lab_ck0000932782_OtherRevenueExpenseAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Revenue Expense [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherRevenueExpenseAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherRevenueExpenseAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherRevenueExpenseAbstract" xlink:to="lab_ck0000932782_OtherRevenueExpenseAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityWellKnownSeasonedIssuer_019b46bd-0684-7d1e-997c-33fd50697a01_terseLabel_en-US" xlink:label="lab_dei_EntityWellKnownSeasonedIssuer" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Well-known Seasoned Issuer</link:label>
    <link:label id="lab_dei_EntityWellKnownSeasonedIssuer_label_en-US" xlink:label="lab_dei_EntityWellKnownSeasonedIssuer" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Well-known Seasoned Issuer</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityWellKnownSeasonedIssuer" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityWellKnownSeasonedIssuer"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityWellKnownSeasonedIssuer" xlink:to="lab_dei_EntityWellKnownSeasonedIssuer" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NumberOfObservations_019b46bd-0715-7b2c-a6f1-b0affde5a342_terseLabel_en-US" xlink:label="lab_ck0000932782_NumberOfObservations" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of observations</link:label>
    <link:label id="lab_ck0000932782_NumberOfObservations_label_en-US" xlink:label="lab_ck0000932782_NumberOfObservations" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Observations</link:label>
    <link:label id="lab_ck0000932782_NumberOfObservations_documentation_en-US" xlink:label="lab_ck0000932782_NumberOfObservations" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of observations.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NumberOfObservations" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NumberOfObservations"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NumberOfObservations" xlink:to="lab_ck0000932782_NumberOfObservations" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProvisionsForTrailsInProcessAmountUsed_019b46bd-053c-7baf-87ba-b8f9be8ecd07_negatedLabel_en-US" xlink:label="lab_ck0000932782_ProvisionsForTrailsInProcessAmountUsed" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Amount used</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForTrailsInProcessAmountUsed_label_en-US" xlink:label="lab_ck0000932782_ProvisionsForTrailsInProcessAmountUsed" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provisions For Trails In Process Amount Used</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForTrailsInProcessAmountUsed_documentation_en-US" xlink:label="lab_ck0000932782_ProvisionsForTrailsInProcessAmountUsed" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Provisions for trails in process deductions.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProvisionsForTrailsInProcessAmountUsed" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProvisionsForTrailsInProcessAmountUsed"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProvisionsForTrailsInProcessAmountUsed" xlink:to="lab_ck0000932782_ProvisionsForTrailsInProcessAmountUsed" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_OtherFinancialAssets_019b46bd-0715-723d-aa89-fe4ac73327e7_terseLabel_en-US" xlink:label="lab_ifrs-full_OtherFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other assets</link:label>
    <link:label id="lab_ifrs-full_OtherFinancialAssets_019b46bd-0715-7d7b-a4e3-c92f6b09347d_totalLabel_en-US" xlink:label="lab_ifrs-full_OtherFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other financing receivables</link:label>
    <link:label id="lab_ifrs-full_OtherFinancialAssets_label_en-US" xlink:label="lab_ifrs-full_OtherFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other financial assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherFinancialAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OtherFinancialAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_OtherFinancialAssets" xlink:to="lab_ifrs-full_OtherFinancialAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DefinedBenefitPlansDomain_019b46bd-0684-7f94-8212-de3e49418337_terseLabel_en-US" xlink:label="lab_ifrs-full_DefinedBenefitPlansDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Defined benefit plans</link:label>
    <link:label id="lab_ifrs-full_DefinedBenefitPlansDomain_label_en-US" xlink:label="lab_ifrs-full_DefinedBenefitPlansDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Defined benefit plans [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DefinedBenefitPlansDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DefinedBenefitPlansDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DefinedBenefitPlansDomain" xlink:to="lab_ifrs-full_DefinedBenefitPlansDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AverageCondensatesPrice_019b46bd-0715-7478-b8b0-02562d942251_terseLabel_en-US" xlink:label="lab_ck0000932782_AverageCondensatesPrice" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average condensates price (USD per barrel)</link:label>
    <link:label id="lab_ck0000932782_AverageCondensatesPrice_label_en-US" xlink:label="lab_ck0000932782_AverageCondensatesPrice" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Average Condensates Price</link:label>
    <link:label id="lab_ck0000932782_AverageCondensatesPrice_documentation_en-US" xlink:label="lab_ck0000932782_AverageCondensatesPrice" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Average condensates price.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AverageCondensatesPrice" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AverageCondensatesPrice"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AverageCondensatesPrice" xlink:to="lab_ck0000932782_AverageCondensatesPrice" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PastServiceCostNetDefinedBenefitLiabilityAsset_019b46bd-0684-7dfb-b3bb-3c1a242594d8_terseLabel_en-US" xlink:label="lab_ifrs-full_PastServiceCostNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Past service costs</link:label>
    <link:label id="lab_ifrs-full_PastServiceCostNetDefinedBenefitLiabilityAsset_label_en-US" xlink:label="lab_ifrs-full_PastServiceCostNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (decrease) in net defined benefit liability (asset) resulting from past service cost</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PastServiceCostNetDefinedBenefitLiabilityAsset" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PastServiceCostNetDefinedBenefitLiabilityAsset"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PastServiceCostNetDefinedBenefitLiabilityAsset" xlink:to="lab_ifrs-full_PastServiceCostNetDefinedBenefitLiabilityAsset" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ContractualLiabilityGroupAxis_019d60c6-91ee-750a-8de0-66abc809e9ee_terseLabel_en-US" xlink:label="lab_ck0000932782_ContractualLiabilityGroupAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contractual Liability Group [Axis]</link:label>
    <link:label id="lab_ck0000932782_ContractualLiabilityGroupAxis_label_en-US" xlink:label="lab_ck0000932782_ContractualLiabilityGroupAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contractual Liability Group [Axis]</link:label>
    <link:label id="lab_ck0000932782_ContractualLiabilityGroupAxis_documentation_en-US" xlink:label="lab_ck0000932782_ContractualLiabilityGroupAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Contractual Liability Group</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ContractualLiabilityGroupAxis" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ContractualLiabilityGroupAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ContractualLiabilityGroupAxis" xlink:to="lab_ck0000932782_ContractualLiabilityGroupAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IncreaseInCertificatesOfContribution_019b46bd-0715-7a92-93ac-d5e089636764_terseLabel_en-US" xlink:label="lab_ck0000932782_IncreaseInCertificatesOfContribution" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase in certificates of contribution</link:label>
    <link:label id="lab_ck0000932782_IncreaseInCertificatesOfContribution_label_en-US" xlink:label="lab_ck0000932782_IncreaseInCertificatesOfContribution" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase in Certificates of Contribution</link:label>
    <link:label id="lab_ck0000932782_IncreaseInCertificatesOfContribution_documentation_en-US" xlink:label="lab_ck0000932782_IncreaseInCertificatesOfContribution" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Increase in Certificates of Contribution</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncreaseInCertificatesOfContribution" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncreaseInCertificatesOfContribution"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IncreaseInCertificatesOfContribution" xlink:to="lab_ck0000932782_IncreaseInCertificatesOfContribution" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ArbitrationProceedingMember_019b46bd-053c-757b-8c26-d8d6db48d94c_terseLabel_en-US" xlink:label="lab_ck0000932782_ArbitrationProceedingMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Arbitration Proceeding</link:label>
    <link:label id="lab_ck0000932782_ArbitrationProceedingMember_label_en-US" xlink:label="lab_ck0000932782_ArbitrationProceedingMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Arbitration Proceeding [Member]</link:label>
    <link:label id="lab_ck0000932782_ArbitrationProceedingMember_documentation_en-US" xlink:label="lab_ck0000932782_ArbitrationProceedingMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Arbitration Proceeding</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ArbitrationProceedingMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ArbitrationProceedingMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ArbitrationProceedingMember" xlink:to="lab_ck0000932782_ArbitrationProceedingMember" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease_019b46bd-05e4-7135-9d2e-4bdb3677ad1f_terseLabel_en-US" xlink:label="lab_srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Aggregate change in standardized measure of discounted future net cash flows</link:label>
    <link:label id="lab_srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease_label_en-US" xlink:label="lab_srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Period Increase (Decrease)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease" xlink:to="lab_srt_StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EstimatedFutureContractPaymentsYearThree_019b46bd-053c-7709-9e8d-7e3fb04ba227_terseLabel_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPaymentsYearThree" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2028</link:label>
    <link:label id="lab_ck0000932782_EstimatedFutureContractPaymentsYearThree_label_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPaymentsYearThree" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Estimated future contract payments year three</link:label>
    <link:label id="lab_ck0000932782_EstimatedFutureContractPaymentsYearThree_documentation_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPaymentsYearThree" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Estimated future contract payments year three.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EstimatedFutureContractPaymentsYearThree" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EstimatedFutureContractPaymentsYearThree"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EstimatedFutureContractPaymentsYearThree" xlink:to="lab_ck0000932782_EstimatedFutureContractPaymentsYearThree" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfOtherRevenueAndExpensesNetExplanatory_019b46bd-053c-71f5-ae88-07d790f38b78_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfOtherRevenueAndExpensesNetExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Revenues and Other Expenses</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfOtherRevenueAndExpensesNetExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfOtherRevenueAndExpensesNetExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Other Revenue and Expenses Net [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfOtherRevenueAndExpensesNetExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfOtherRevenueAndExpensesNetExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Entire Disclosure Of Other Revenue and Expenses Net [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfOtherRevenueAndExpensesNetExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfOtherRevenueAndExpensesNetExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfOtherRevenueAndExpensesNetExplanatory" xlink:to="lab_ck0000932782_DisclosureOfOtherRevenueAndExpensesNetExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityCurrentReportingStatus_019b46bd-0684-7917-bf92-d2f29d26a8f1_terseLabel_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Current Reporting Status</link:label>
    <link:label id="lab_dei_EntityCurrentReportingStatus_label_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Current Reporting Status</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCurrentReportingStatus" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCurrentReportingStatus"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCurrentReportingStatus" xlink:to="lab_dei_EntityCurrentReportingStatus" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember_019b46bd-053d-7390-8b62-6d85fc7e1685_terseLabel_en-US" xlink:label="lab_ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">1 to 3 years</link:label>
    <link:label id="lab_ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember_label_en-US" xlink:label="lab_ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Later than one year and not later than three years [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember" xlink:to="lab_ifrs-full_LaterThanOneYearAndNotLaterThanThreeYearsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LiquidationEventLoss_019b46bd-053c-7287-aefe-8dcc70c37f58_verboseLabel_en-US" xlink:label="lab_ck0000932782_LiquidationEventLoss" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Liquidation event loss</link:label>
    <link:label id="lab_ck0000932782_LiquidationEventLoss_label_en-US" xlink:label="lab_ck0000932782_LiquidationEventLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liquidation Event Loss</link:label>
    <link:label id="lab_ck0000932782_LiquidationEventLoss_documentation_en-US" xlink:label="lab_ck0000932782_LiquidationEventLoss" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Liquidation event loss.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LiquidationEventLoss" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LiquidationEventLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LiquidationEventLoss" xlink:to="lab_ck0000932782_LiquidationEventLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DiscountRateOfReserveForWellAbandonment_019b46bd-05e4-7d09-8a0d-198f2005bc17_terseLabel_en-US" xlink:label="lab_ck0000932782_DiscountRateOfReserveForWellAbandonment" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrealized foreign exchange loss in discount rate of reserve for well abandonment</link:label>
    <link:label id="lab_ck0000932782_DiscountRateOfReserveForWellAbandonment_label_en-US" xlink:label="lab_ck0000932782_DiscountRateOfReserveForWellAbandonment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Discount Rate Of Reserve For Well Abandonment</link:label>
    <link:label id="lab_ck0000932782_DiscountRateOfReserveForWellAbandonment_documentation_en-US" xlink:label="lab_ck0000932782_DiscountRateOfReserveForWellAbandonment" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Discount rate of reserve for well abandonment.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DiscountRateOfReserveForWellAbandonment" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DiscountRateOfReserveForWellAbandonment"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DiscountRateOfReserveForWellAbandonment" xlink:to="lab_ck0000932782_DiscountRateOfReserveForWellAbandonment" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_ConsolidatedEntitiesDomain_019b46bd-045f-706e-963f-3778b786fb2b_terseLabel_en-US" xlink:label="lab_srt_ConsolidatedEntitiesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consolidated Entities [Domain]</link:label>
    <link:label id="lab_srt_ConsolidatedEntitiesDomain_label_en-US" xlink:label="lab_srt_ConsolidatedEntitiesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidated Entities [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesDomain" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidatedEntitiesDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ConsolidatedEntitiesDomain" xlink:to="lab_srt_ConsolidatedEntitiesDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ConfidenceLevelPercentage_019b46bd-0684-78b2-a91b-92d6e211123b_terseLabel_en-US" xlink:label="lab_ck0000932782_ConfidenceLevelPercentage" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Confidence level percentage</link:label>
    <link:label id="lab_ck0000932782_ConfidenceLevelPercentage_label_en-US" xlink:label="lab_ck0000932782_ConfidenceLevelPercentage" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Confidence level percentage</link:label>
    <link:label id="lab_ck0000932782_ConfidenceLevelPercentage_documentation_en-US" xlink:label="lab_ck0000932782_ConfidenceLevelPercentage" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Confidence level percentage.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ConfidenceLevelPercentage" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ConfidenceLevelPercentage"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ConfidenceLevelPercentage" xlink:to="lab_ck0000932782_ConfidenceLevelPercentage" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DutiesTaxesAndOther_019b46bd-05e4-77cf-aa8b-e2eefa5a1020_terseLabel_en-US" xlink:label="lab_ck0000932782_DutiesTaxesAndOther" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total duties, taxes and other</link:label>
    <link:label id="lab_ck0000932782_DutiesTaxesAndOther_label_en-US" xlink:label="lab_ck0000932782_DutiesTaxesAndOther" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Duties, taxes and other</link:label>
    <link:label id="lab_ck0000932782_DutiesTaxesAndOther_documentation_en-US" xlink:label="lab_ck0000932782_DutiesTaxesAndOther" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Total duties, taxes and other.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DutiesTaxesAndOther" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DutiesTaxesAndOther"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DutiesTaxesAndOther" xlink:to="lab_ck0000932782_DutiesTaxesAndOther" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IncreaseDecreaseInExchangeRateEffectAmount_019b46bd-053d-7299-9aa7-51190dcd54f4_terseLabel_en-US" xlink:label="lab_ck0000932782_IncreaseDecreaseInExchangeRateEffectAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exchange rate effect amount</link:label>
    <link:label id="lab_ck0000932782_IncreaseDecreaseInExchangeRateEffectAmount_label_en-US" xlink:label="lab_ck0000932782_IncreaseDecreaseInExchangeRateEffectAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase Decrease In Exchange Rate Effect Amount</link:label>
    <link:label id="lab_ck0000932782_IncreaseDecreaseInExchangeRateEffectAmount_documentation_en-US" xlink:label="lab_ck0000932782_IncreaseDecreaseInExchangeRateEffectAmount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Increase Decrease In Exchange Rate Effect Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncreaseDecreaseInExchangeRateEffectAmount" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncreaseDecreaseInExchangeRateEffectAmount"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IncreaseDecreaseInExchangeRateEffectAmount" xlink:to="lab_ck0000932782_IncreaseDecreaseInExchangeRateEffectAmount" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfBasisOfPreparationAbstract_019b46bd-0715-7aa3-8b6b-2dccd7dfeb17_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfBasisOfPreparationAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure Of Basis Of Preparation [abstract]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfBasisOfPreparationAbstract_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfBasisOfPreparationAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of basis of preparation [Abstract]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfBasisOfPreparationAbstract_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfBasisOfPreparationAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of basis of preparation.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfBasisOfPreparationAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfBasisOfPreparationAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfBasisOfPreparationAbstract" xlink:to="lab_ck0000932782_DisclosureOfBasisOfPreparationAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_StatementOperatingSegment1Axis_019b46bd-0715-7a3f-8191-29003ad54a57_terseLabel_en-US" xlink:label="lab_ck0000932782_StatementOperatingSegment1Axis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement Operating Activities Segment [axis]</link:label>
    <link:label id="lab_ck0000932782_StatementOperatingSegment1Axis_label_en-US" xlink:label="lab_ck0000932782_StatementOperatingSegment1Axis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement Operating Segment1 [Axis]</link:label>
    <link:label id="lab_ck0000932782_StatementOperatingSegment1Axis_documentation_en-US" xlink:label="lab_ck0000932782_StatementOperatingSegment1Axis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Statement Operating Activities Segment [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StatementOperatingSegment1Axis" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StatementOperatingSegment1Axis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_StatementOperatingSegment1Axis" xlink:to="lab_ck0000932782_StatementOperatingSegment1Axis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InfrastructureAndServiceWorksMember_019b46bd-05e4-7b3d-be81-1d9200ce483e_terseLabel_en-US" xlink:label="lab_ck0000932782_InfrastructureAndServiceWorksMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Infrastructure and service works</link:label>
    <link:label id="lab_ck0000932782_InfrastructureAndServiceWorksMember_label_en-US" xlink:label="lab_ck0000932782_InfrastructureAndServiceWorksMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Infrastructure and service works [member]</link:label>
    <link:label id="lab_ck0000932782_InfrastructureAndServiceWorksMember_documentation_en-US" xlink:label="lab_ck0000932782_InfrastructureAndServiceWorksMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Infrastructure and service works [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InfrastructureAndServiceWorksMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InfrastructureAndServiceWorksMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InfrastructureAndServiceWorksMember" xlink:to="lab_ck0000932782_InfrastructureAndServiceWorksMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LeaseLiabilitiesForeignExchangeAdjustments_019b46bd-053d-754f-83ed-43f32e43d381_terseLabel_en-US" xlink:label="lab_ck0000932782_LeaseLiabilitiesForeignExchangeAdjustments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign Exchange</link:label>
    <link:label id="lab_ck0000932782_LeaseLiabilitiesForeignExchangeAdjustments_label_en-US" xlink:label="lab_ck0000932782_LeaseLiabilitiesForeignExchangeAdjustments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Liabilities Foreign Exchange Adjustments</link:label>
    <link:label id="lab_ck0000932782_LeaseLiabilitiesForeignExchangeAdjustments_documentation_en-US" xlink:label="lab_ck0000932782_LeaseLiabilitiesForeignExchangeAdjustments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease liabilities foreign exchange adjustments.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LeaseLiabilitiesForeignExchangeAdjustments" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LeaseLiabilitiesForeignExchangeAdjustments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LeaseLiabilitiesForeignExchangeAdjustments" xlink:to="lab_ck0000932782_LeaseLiabilitiesForeignExchangeAdjustments" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract_019b46bd-0684-7ae0-9249-cff5656ee027_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of subsidiaries [abstract]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of subsidiaries [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract" xlink:to="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_CurrentFiscalYearEndDate_019b46bd-0684-7cde-871d-e1d17c6cea9c_terseLabel_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current Fiscal Year End Date</link:label>
    <link:label id="lab_dei_CurrentFiscalYearEndDate_label_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current Fiscal Year End Date</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CurrentFiscalYearEndDate" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CurrentFiscalYearEndDate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_CurrentFiscalYearEndDate" xlink:to="lab_dei_CurrentFiscalYearEndDate" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashEquivalents_019b46bd-0715-7472-a45e-9ecaf74f791c_terseLabel_en-US" xlink:label="lab_ifrs-full_CashEquivalents" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Highly liquid investments</link:label>
    <link:label id="lab_ifrs-full_CashEquivalents_label_en-US" xlink:label="lab_ifrs-full_CashEquivalents" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash equivalents</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashEquivalents" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashEquivalents"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashEquivalents" xlink:to="lab_ifrs-full_CashEquivalents" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RevenueFromSaleOfOilAndGasProducts_019b46bd-0684-7918-9abe-d03651dfd2db_terseLabel_en-US" xlink:label="lab_ifrs-full_RevenueFromSaleOfOilAndGasProducts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenues from sale of oil and gas</link:label>
    <link:label id="lab_ifrs-full_RevenueFromSaleOfOilAndGasProducts_label_en-US" xlink:label="lab_ifrs-full_RevenueFromSaleOfOilAndGasProducts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue from sale of oil and gas products</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RevenueFromSaleOfOilAndGasProducts" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevenueFromSaleOfOilAndGasProducts"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RevenueFromSaleOfOilAndGasProducts" xlink:to="lab_ifrs-full_RevenueFromSaleOfOilAndGasProducts" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PluggingAndAbandonmentCost_019b46bd-053c-76ef-b9e3-9903a030ec84_terseLabel_en-US" xlink:label="lab_ck0000932782_PluggingAndAbandonmentCost" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plugging and abandonment cost</link:label>
    <link:label id="lab_ck0000932782_PluggingAndAbandonmentCost_label_en-US" xlink:label="lab_ck0000932782_PluggingAndAbandonmentCost" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plugging And Abandonment Cost</link:label>
    <link:label id="lab_ck0000932782_PluggingAndAbandonmentCost_documentation_en-US" xlink:label="lab_ck0000932782_PluggingAndAbandonmentCost" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Plugging and abandonment cost.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PluggingAndAbandonmentCost" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PluggingAndAbandonmentCost"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PluggingAndAbandonmentCost" xlink:to="lab_ck0000932782_PluggingAndAbandonmentCost" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ExplorationExpensesEvaluationOfAssetsAndConcessoinsMember_019b46bd-0684-7d1f-8832-5fc7654e0cb5_terseLabel_en-US" xlink:label="lab_ck0000932782_ExplorationExpensesEvaluationOfAssetsAndConcessoinsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exploration expenses, evaluation of assets and concessions</link:label>
    <link:label id="lab_ck0000932782_ExplorationExpensesEvaluationOfAssetsAndConcessoinsMember_label_en-US" xlink:label="lab_ck0000932782_ExplorationExpensesEvaluationOfAssetsAndConcessoinsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exploration expenses, evaluation of assets and concessoins [member]</link:label>
    <link:label id="lab_ck0000932782_ExplorationExpensesEvaluationOfAssetsAndConcessoinsMember_documentation_en-US" xlink:label="lab_ck0000932782_ExplorationExpensesEvaluationOfAssetsAndConcessoinsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Exploration expenses, evaluation of assets and concessoins.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ExplorationExpensesEvaluationOfAssetsAndConcessoinsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ExplorationExpensesEvaluationOfAssetsAndConcessoinsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ExplorationExpensesEvaluationOfAssetsAndConcessoinsMember" xlink:to="lab_ck0000932782_ExplorationExpensesEvaluationOfAssetsAndConcessoinsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfSupplementalGeographicInformationExplanatoryTableTextBlock_019b46bd-05e4-77d6-b346-e29732c0b669_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementalGeographicInformationExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Income By Product</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfSupplementalGeographicInformationExplanatoryTableTextBlock_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementalGeographicInformationExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of supplemental geographic information explanatory [Table Text Block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfSupplementalGeographicInformationExplanatoryTableTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementalGeographicInformationExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of supplemental geographic information explanatory.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfSupplementalGeographicInformationExplanatoryTableTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfSupplementalGeographicInformationExplanatoryTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfSupplementalGeographicInformationExplanatoryTableTextBlock" xlink:to="lab_ck0000932782_DisclosureOfSupplementalGeographicInformationExplanatoryTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfInventoriesAbstract_019b46bd-053c-7801-a857-bd733afa04f3_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfInventoriesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of inventories [abstract]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfInventoriesAbstract_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfInventoriesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of inventories [abstract]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfInventoriesAbstract_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfInventoriesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of inventories</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfInventoriesAbstract" xlink:to="lab_ck0000932782_DisclosureOfInventoriesAbstract" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_NinetyOneDaysTIIEPlus350BasisPointMember_label_en-US" xlink:label="lab_ck0000932782_NinetyOneDaysTIIEPlus350BasisPointMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ninety One Days TIIE Plus 350 Basis Point [Member]</link:label>
    <link:label id="lab_ck0000932782_NinetyOneDaysTIIEPlus350BasisPointMember_documentation_en-US" xlink:label="lab_ck0000932782_NinetyOneDaysTIIEPlus350BasisPointMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ninety One Days TIIE Plus 350 Basis Point</link:label>
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    <link:label id="lab_ifrs-full_ProceedsFromGovernmentGrantsClassifiedAsInvestingActivities_019b46bd-05e4-7a41-8b35-01dbca10e101_terseLabel_en-US" xlink:label="lab_ifrs-full_ProceedsFromGovernmentGrantsClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from government grants</link:label>
    <link:label id="lab_ifrs-full_ProceedsFromGovernmentGrantsClassifiedAsInvestingActivities_019b46bd-05e4-7304-aa41-ef3201b3279c_netLabel_en-US" xlink:label="lab_ifrs-full_ProceedsFromGovernmentGrantsClassifiedAsInvestingActivities" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
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    <link:label id="lab_ck0000932782_DisclosureOfEquityContributedEquityExplanatoryTableTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfEquityContributedEquityExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The disclosure of equity contributed equity.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfEquityContributedEquityExplanatoryTableTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfEquityContributedEquityExplanatoryTableTextBlock"/>
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    <link:label id="lab_ifrs-full_FinancialAssets_019b46bd-0715-7346-84c0-444ee97f2114_totalLabel_en-US" xlink:label="lab_ifrs-full_FinancialAssets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Financial assets not measured at fair value</link:label>
    <link:label id="lab_ifrs-full_FinancialAssets_019b46bd-0715-700c-8365-74ede1ce5c44_terseLabel_en-US" xlink:label="lab_ifrs-full_FinancialAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:label id="lab_ifrs-full_FinancialAssets_label_en-US" xlink:label="lab_ifrs-full_FinancialAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssets"/>
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    <link:label id="lab_ck0000932782_CrudeOilAndCondensateReservesMember_019b46bd-053c-71f7-b44a-e2ff957684cb_terseLabel_en-US" xlink:label="lab_ck0000932782_CrudeOilAndCondensateReservesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Crude Oil and Condensate Reserves</link:label>
    <link:label id="lab_ck0000932782_CrudeOilAndCondensateReservesMember_label_en-US" xlink:label="lab_ck0000932782_CrudeOilAndCondensateReservesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Crude Oil and Condensate Reserves [Member]</link:label>
    <link:label id="lab_ck0000932782_CrudeOilAndCondensateReservesMember_documentation_en-US" xlink:label="lab_ck0000932782_CrudeOilAndCondensateReservesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Crude Oil and Condensate Reserves</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CrudeOilAndCondensateReservesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CrudeOilAndCondensateReservesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CrudeOilAndCondensateReservesMember" xlink:to="lab_ck0000932782_CrudeOilAndCondensateReservesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LongTermEmployeeBenefitsMember_019b46bd-05e4-7489-bf15-f63c94263cfb_terseLabel_en-US" xlink:label="lab_ck0000932782_LongTermEmployeeBenefitsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long term employee benefits</link:label>
    <link:label id="lab_ck0000932782_LongTermEmployeeBenefitsMember_label_en-US" xlink:label="lab_ck0000932782_LongTermEmployeeBenefitsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long Term Employee Benefits [member]</link:label>
    <link:label id="lab_ck0000932782_LongTermEmployeeBenefitsMember_documentation_en-US" xlink:label="lab_ck0000932782_LongTermEmployeeBenefitsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Long term employee benefits.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LongTermEmployeeBenefitsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LongTermEmployeeBenefitsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LongTermEmployeeBenefitsMember" xlink:to="lab_ck0000932782_LongTermEmployeeBenefitsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEPlus365BasisPointsMember_019b46bd-05e4-7e3f-bc91-430aacc4d04a_terseLabel_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEPlus365BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE Plus 365 Basis Points</link:label>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEPlus365BasisPointsMember_label_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEPlus365BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE Plus 365 Basis Points [Member]</link:label>
    <link:label id="lab_ck0000932782_TwentyEightDaysTIIEPlus365BasisPointsMember_documentation_en-US" xlink:label="lab_ck0000932782_TwentyEightDaysTIIEPlus365BasisPointsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Twenty Eight Days TIIE Plus 365 Basis Points</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TwentyEightDaysTIIEPlus365BasisPointsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TwentyEightDaysTIIEPlus365BasisPointsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TwentyEightDaysTIIEPlus365BasisPointsMember" xlink:to="lab_ck0000932782_TwentyEightDaysTIIEPlus365BasisPointsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MatapioncheGasProcessorComplexMember_019b46bd-0715-7b3f-9a06-5b84d5c6fade_terseLabel_en-US" xlink:label="lab_ck0000932782_MatapioncheGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Matapionche Gas Processor Complex</link:label>
    <link:label id="lab_ck0000932782_MatapioncheGasProcessorComplexMember_label_en-US" xlink:label="lab_ck0000932782_MatapioncheGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Matapionche Gas Processor Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_MatapioncheGasProcessorComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_MatapioncheGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Matapionche Gas Processor Complex</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MatapioncheGasProcessorComplexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MatapioncheGasProcessorComplexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MatapioncheGasProcessorComplexMember" xlink:to="lab_ck0000932782_MatapioncheGasProcessorComplexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AdjustmentsForDerivativeFinancialInstruments_019b46bd-0715-7f7b-83d0-e9e9151e3887_terseLabel_en-US" xlink:label="lab_ck0000932782_AdjustmentsForDerivativeFinancialInstruments" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative financial instruments</link:label>
    <link:label id="lab_ck0000932782_AdjustmentsForDerivativeFinancialInstruments_label_en-US" xlink:label="lab_ck0000932782_AdjustmentsForDerivativeFinancialInstruments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments For Derivative Financial Instruments</link:label>
    <link:label id="lab_ck0000932782_AdjustmentsForDerivativeFinancialInstruments_documentation_en-US" xlink:label="lab_ck0000932782_AdjustmentsForDerivativeFinancialInstruments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Adjustments for derivative financial instruments.</link:label>
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    <link:label id="lab_ck0000932782_CrossCurrencySwapsPositionFourMember_019b46bd-0715-7a98-8b71-36f3f715f049_terseLabel_en-US" xlink:label="lab_ck0000932782_CrossCurrencySwapsPositionFourMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Petr&#243;leos Mexicanos pays fixed in U.S. dollar and receives fixed in Pound sterling.</link:label>
    <link:label id="lab_ck0000932782_CrossCurrencySwapsPositionFourMember_label_en-US" xlink:label="lab_ck0000932782_CrossCurrencySwapsPositionFourMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cross Currency Swaps Position Four [member]</link:label>
    <link:label id="lab_ck0000932782_CrossCurrencySwapsPositionFourMember_documentation_en-US" xlink:label="lab_ck0000932782_CrossCurrencySwapsPositionFourMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cross currency swaps position four.</link:label>
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    <link:label id="lab_ck0000932782_DisclosureOfRollForwardRelatedToThePromissoryNotesRollForward_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfRollForwardRelatedToThePromissoryNotesRollForward" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of Roll Forward Related to the Promissory Notes [Roll Forward]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfRollForwardRelatedToThePromissoryNotesRollForward_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfRollForwardRelatedToThePromissoryNotesRollForward" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of Roll Forward Related to the Promissory Notes</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfRollForwardRelatedToThePromissoryNotesRollForward" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfRollForwardRelatedToThePromissoryNotesRollForward"/>
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    <link:label id="lab_ck0000932782_IncreaseMember_019b46bd-05e4-7377-aa02-6d7109d10a9a_terseLabel_en-US" xlink:label="lab_ck0000932782_IncreaseMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase</link:label>
    <link:label id="lab_ck0000932782_IncreaseMember_label_en-US" xlink:label="lab_ck0000932782_IncreaseMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase [member]</link:label>
    <link:label id="lab_ck0000932782_IncreaseMember_documentation_en-US" xlink:label="lab_ck0000932782_IncreaseMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Increase.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncreaseMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncreaseMember"/>
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    <link:label id="lab_ck0000932782_AccountsPayableAndAccruedExpenses_019b46bd-0684-72f4-887e-9708e5a318d6_terseLabel_en-US" xlink:label="lab_ck0000932782_AccountsPayableAndAccruedExpenses" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts and accrued expenses payable</link:label>
    <link:label id="lab_ck0000932782_AccountsPayableAndAccruedExpenses_019b46bd-0684-7a12-8af2-2b2d91ae0483_negatedLabel_en-US" xlink:label="lab_ck0000932782_AccountsPayableAndAccruedExpenses" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accounts and accrued expenses payable</link:label>
    <link:label id="lab_ck0000932782_AccountsPayableAndAccruedExpenses_label_en-US" xlink:label="lab_ck0000932782_AccountsPayableAndAccruedExpenses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts payable and accrued expenses</link:label>
    <link:label id="lab_ck0000932782_AccountsPayableAndAccruedExpenses_documentation_en-US" xlink:label="lab_ck0000932782_AccountsPayableAndAccruedExpenses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Accounts payable and accrued expenses.</link:label>
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    <link:label id="lab_ck0000932782_CoalCokeMember_019b46bd-05e4-7c6a-875b-d5b6c0661372_terseLabel_en-US" xlink:label="lab_ck0000932782_CoalCokeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Coal Coke</link:label>
    <link:label id="lab_ck0000932782_CoalCokeMember_label_en-US" xlink:label="lab_ck0000932782_CoalCokeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Coal Coke [Member]</link:label>
    <link:label id="lab_ck0000932782_CoalCokeMember_documentation_en-US" xlink:label="lab_ck0000932782_CoalCokeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Coal coke.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CoalCokeMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CoalCokeMember"/>
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    <link:label id="lab_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsDomain_019b46bd-053c-7f2b-a2f8-fa5867cd55da_terseLabel_en-US" xlink:label="lab_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Temporary difference, unused tax losses and unused tax credits</link:label>
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    <link:label id="lab_ifrs-full_ClassesOfEntitysOwnEquityInstrumentsAxis_019b46bd-0715-77e7-b3be-e107a3363f32_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfEntitysOwnEquityInstrumentsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of entity's own equity instruments [axis]</link:label>
    <link:label id="lab_ifrs-full_ClassesOfEntitysOwnEquityInstrumentsAxis_label_en-US" xlink:label="lab_ifrs-full_ClassesOfEntitysOwnEquityInstrumentsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of entity's own equity instruments [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfEntitysOwnEquityInstrumentsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfEntitysOwnEquityInstrumentsAxis"/>
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    <link:label id="lab_ck0000932782_BlockThreeMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockThreeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block Three [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockThreeMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockThreeMember"/>
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    <link:label id="lab_ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember_019b46bd-0684-7fc1-bf40-b1e9ddd64fb9_verboseLabel_en-US" xlink:label="lab_ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">2027</link:label>
    <link:label id="lab_ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember_label_en-US" xlink:label="lab_ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Later than one year and not later than two years [member]</link:label>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitExplanatory" xlink:to="lab_ifrs-full_DisclosureOfInformationForEachMaterialImpairmentLossRecognisedOrReversedForIndividualAssetOrCashgeneratingUnitExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AllowanceAccountsAbstract_019b46bd-05e4-748d-9f9e-0ab549c19095_terseLabel_en-US" xlink:label="lab_ck0000932782_AllowanceAccountsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Allowance costs for environmental costs</link:label>
    <link:label id="lab_ck0000932782_AllowanceAccountsAbstract_label_en-US" xlink:label="lab_ck0000932782_AllowanceAccountsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Allowance Accounts [Abstract]</link:label>
    <link:label id="lab_ck0000932782_AllowanceAccountsAbstract_documentation_en-US" xlink:label="lab_ck0000932782_AllowanceAccountsAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Allowance Accounts</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AllowanceAccountsAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AllowanceAccountsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AllowanceAccountsAbstract" xlink:to="lab_ck0000932782_AllowanceAccountsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TwentyEightyDaysTIIEFloatingRateMember_019b46bd-05e4-7f9b-97b1-4bd283a3a634_terseLabel_en-US" xlink:label="lab_ck0000932782_TwentyEightyDaysTIIEFloatingRateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Twenty Eighty Days TIIE Floating Rate</link:label>
    <link:label id="lab_ck0000932782_TwentyEightyDaysTIIEFloatingRateMember_label_en-US" xlink:label="lab_ck0000932782_TwentyEightyDaysTIIEFloatingRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Twenty Eighty Days TIIE Floating Rate [Member]</link:label>
    <link:label id="lab_ck0000932782_TwentyEightyDaysTIIEFloatingRateMember_documentation_en-US" xlink:label="lab_ck0000932782_TwentyEightyDaysTIIEFloatingRateMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Twenty Eighty Days TIIE Floating Rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TwentyEightyDaysTIIEFloatingRateMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TwentyEightyDaysTIIEFloatingRateMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TwentyEightyDaysTIIEFloatingRateMember" xlink:to="lab_ck0000932782_TwentyEightyDaysTIIEFloatingRateMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SixPointSixTwoFivePercentNotesDueTwoThousandThirtyFiveMember_019b46bd-0460-7ce7-8f62-61b47812eb0a_terseLabel_en-US" xlink:label="lab_ck0000932782_SixPointSixTwoFivePercentNotesDueTwoThousandThirtyFiveMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">6.625% Notes due 2035</link:label>
    <link:label id="lab_ck0000932782_SixPointSixTwoFivePercentNotesDueTwoThousandThirtyFiveMember_label_en-US" xlink:label="lab_ck0000932782_SixPointSixTwoFivePercentNotesDueTwoThousandThirtyFiveMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Six Point Six Two Five Percent Notes Due Two Thousand Thirty Five [member]</link:label>
    <link:label id="lab_ck0000932782_SixPointSixTwoFivePercentNotesDueTwoThousandThirtyFiveMember_documentation_en-US" xlink:label="lab_ck0000932782_SixPointSixTwoFivePercentNotesDueTwoThousandThirtyFiveMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Six point six two five percent notes due two thousand thirty five.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SixPointSixTwoFivePercentNotesDueTwoThousandThirtyFiveMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SixPointSixTwoFivePercentNotesDueTwoThousandThirtyFiveMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SixPointSixTwoFivePercentNotesDueTwoThousandThirtyFiveMember" xlink:to="lab_ck0000932782_SixPointSixTwoFivePercentNotesDueTwoThousandThirtyFiveMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProvisionsForTrailsInProcess_019b46bd-0715-70f9-b6c3-832b4842d290_terseLabel_en-US" xlink:label="lab_ck0000932782_ProvisionsForTrailsInProcess" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provision for trails in process (Note 27)</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForTrailsInProcess_019b46bd-0715-765c-8493-d634c1b43eee_periodStartLabel_en-US" xlink:label="lab_ck0000932782_ProvisionsForTrailsInProcess" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance at the beginning of the year</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForTrailsInProcess_019b46bd-0715-7612-88a3-c371ce9ebb5b_periodEndLabel_en-US" xlink:label="lab_ck0000932782_ProvisionsForTrailsInProcess" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance at the end of the year</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForTrailsInProcess_label_en-US" xlink:label="lab_ck0000932782_ProvisionsForTrailsInProcess" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provisions For Trails In Process</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForTrailsInProcess_documentation_en-US" xlink:label="lab_ck0000932782_ProvisionsForTrailsInProcess" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Provisions for trails in process.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProvisionsForTrailsInProcess" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProvisionsForTrailsInProcess"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProvisionsForTrailsInProcess" xlink:to="lab_ck0000932782_ProvisionsForTrailsInProcess" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CategoriesOfFinancialAssetsDomain_019b46bd-053c-7c7c-9f39-9b8e0b7268fc_terseLabel_en-US" xlink:label="lab_ifrs-full_CategoriesOfFinancialAssetsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Categories of financial assets</link:label>
    <link:label id="lab_ifrs-full_CategoriesOfFinancialAssetsDomain_019b46bd-053c-72d7-8cd1-467a2a9f1476_verboseLabel_en-US" xlink:label="lab_ifrs-full_CategoriesOfFinancialAssetsDomain" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">FVOCI &#8211; debt instruments</link:label>
    <link:label id="lab_ifrs-full_CategoriesOfFinancialAssetsDomain_label_en-US" xlink:label="lab_ifrs-full_CategoriesOfFinancialAssetsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Categories of financial assets [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CategoriesOfFinancialAssetsDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfFinancialAssetsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CategoriesOfFinancialAssetsDomain" xlink:to="lab_ifrs-full_CategoriesOfFinancialAssetsDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LeasePaymentsOfPrincipalAndInterest_019b46bd-0715-728d-9ab4-c800745af985_negatedTerseLabel_en-US" xlink:label="lab_ck0000932782_LeasePaymentsOfPrincipalAndInterest" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Lease payments (principal and interest)</link:label>
    <link:label id="lab_ck0000932782_LeasePaymentsOfPrincipalAndInterest_label_en-US" xlink:label="lab_ck0000932782_LeasePaymentsOfPrincipalAndInterest" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Payments Of Principal And Interest</link:label>
    <link:label id="lab_ck0000932782_LeasePaymentsOfPrincipalAndInterest_documentation_en-US" xlink:label="lab_ck0000932782_LeasePaymentsOfPrincipalAndInterest" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease payments of principal and interest.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LeasePaymentsOfPrincipalAndInterest" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LeasePaymentsOfPrincipalAndInterest"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LeasePaymentsOfPrincipalAndInterest" xlink:to="lab_ck0000932782_LeasePaymentsOfPrincipalAndInterest" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentDerivativeFinancialAssets_019b46bd-0684-7115-9d1b-b757ca464988_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentDerivativeFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative financial instruments</link:label>
    <link:label id="lab_ifrs-full_CurrentDerivativeFinancialAssets_label_en-US" xlink:label="lab_ifrs-full_CurrentDerivativeFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current derivative financial assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentDerivativeFinancialAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentDerivativeFinancialAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentDerivativeFinancialAssets" xlink:to="lab_ifrs-full_CurrentDerivativeFinancialAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseExpectedBenefitContract_019b46bd-0684-71e6-90b7-01d2dfdf8bc4_terseLabel_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseExpectedBenefitContract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected benefit contract</link:label>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseExpectedBenefitContract_label_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseExpectedBenefitContract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit-sharing duty expense Expected benefit contract</link:label>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseExpectedBenefitContract_documentation_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseExpectedBenefitContract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Profit-sharing duty expense Expected benefit contract.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProfitsharingDutyExpenseExpectedBenefitContract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProfitsharingDutyExpenseExpectedBenefitContract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProfitsharingDutyExpenseExpectedBenefitContract" xlink:to="lab_ck0000932782_ProfitsharingDutyExpenseExpectedBenefitContract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NetPeriodicCostOfEmployeeBenefits_019b46bd-0684-7594-b6c0-1b3f66edb64d_verboseLabel_en-US" xlink:label="lab_ck0000932782_NetPeriodicCostOfEmployeeBenefits" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net periodic cost of employee benefits</link:label>
    <link:label id="lab_ck0000932782_NetPeriodicCostOfEmployeeBenefits_019b46bd-0684-7b69-ac1d-4cc6744f1042_terseLabel_en-US" xlink:label="lab_ck0000932782_NetPeriodicCostOfEmployeeBenefits" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net periodic cost of employee benefits</link:label>
    <link:label id="lab_ck0000932782_NetPeriodicCostOfEmployeeBenefits_label_en-US" xlink:label="lab_ck0000932782_NetPeriodicCostOfEmployeeBenefits" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net periodic cost of employee benefits</link:label>
    <link:label id="lab_ck0000932782_NetPeriodicCostOfEmployeeBenefits_documentation_en-US" xlink:label="lab_ck0000932782_NetPeriodicCostOfEmployeeBenefits" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net periodic cost of employee benefits.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NetPeriodicCostOfEmployeeBenefits" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NetPeriodicCostOfEmployeeBenefits"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NetPeriodicCostOfEmployeeBenefits" xlink:to="lab_ck0000932782_NetPeriodicCostOfEmployeeBenefits" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_RatedCreditExposuresNet_019b46bd-05e4-7556-a9eb-ae860c13f23b_terseLabel_en-US" xlink:label="lab_ck0000932782_RatedCreditExposuresNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum Credit Exposure by term in Petroleos Mexicanos</link:label>
    <link:label id="lab_ck0000932782_RatedCreditExposuresNet_label_en-US" xlink:label="lab_ck0000932782_RatedCreditExposuresNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Rated credit exposures, net</link:label>
    <link:label id="lab_ck0000932782_RatedCreditExposuresNet_documentation_en-US" xlink:label="lab_ck0000932782_RatedCreditExposuresNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Rated credit exposures, net</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RatedCreditExposuresNet" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RatedCreditExposuresNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_RatedCreditExposuresNet" xlink:to="lab_ck0000932782_RatedCreditExposuresNet" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AccruedInterest_019b46bd-0684-7b86-89be-08bd3231aa5e_terseLabel_en-US" xlink:label="lab_ck0000932782_AccruedInterest" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued interest</link:label>
    <link:label id="lab_ck0000932782_AccruedInterest_label_en-US" xlink:label="lab_ck0000932782_AccruedInterest" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued interest</link:label>
    <link:label id="lab_ck0000932782_AccruedInterest_documentation_en-US" xlink:label="lab_ck0000932782_AccruedInterest" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of interest accrued but is not yet received.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AccruedInterest" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AccruedInterest"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AccruedInterest" xlink:to="lab_ck0000932782_AccruedInterest" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfOtherRevenueAndExpenseTableTextBlock_019b46bd-0715-7c2c-822d-850a4234d585_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfOtherRevenueAndExpenseTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Other Revenues and Expenses</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfOtherRevenueAndExpenseTableTextBlock_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfOtherRevenueAndExpenseTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Other Revenue and Expense [Table Text Block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfOtherRevenueAndExpenseTableTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfOtherRevenueAndExpenseTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Other Revenue and Expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfOtherRevenueAndExpenseTableTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfOtherRevenueAndExpenseTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfOtherRevenueAndExpenseTableTextBlock" xlink:to="lab_ck0000932782_DisclosureOfOtherRevenueAndExpenseTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfFairValueOfDerivativesAndClassificationOnConsolidatedStatementsOfFinancialPositionExplanatoryTableTextBlock_019b46bd-05e4-722b-b45d-32570f1f16d3_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfFairValueOfDerivativesAndClassificationOnConsolidatedStatementsOfFinancialPositionExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Location on the Consolidated Statement of Financial Position and the Fair Value of DFIs</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfFairValueOfDerivativesAndClassificationOnConsolidatedStatementsOfFinancialPositionExplanatoryTableTextBlock_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfFairValueOfDerivativesAndClassificationOnConsolidatedStatementsOfFinancialPositionExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Fair Value Of Derivatives And Classification On Consolidated Statements Of Financial Position Explanatory [Table Text Block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfFairValueOfDerivativesAndClassificationOnConsolidatedStatementsOfFinancialPositionExplanatoryTableTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfFairValueOfDerivativesAndClassificationOnConsolidatedStatementsOfFinancialPositionExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of fair value of derivatives and classification on consolidated statements of financial position</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfFairValueOfDerivativesAndClassificationOnConsolidatedStatementsOfFinancialPositionExplanatoryTableTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfFairValueOfDerivativesAndClassificationOnConsolidatedStatementsOfFinancialPositionExplanatoryTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfFairValueOfDerivativesAndClassificationOnConsolidatedStatementsOfFinancialPositionExplanatoryTableTextBlock" xlink:to="lab_ck0000932782_DisclosureOfFairValueOfDerivativesAndClassificationOnConsolidatedStatementsOfFinancialPositionExplanatoryTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SalaryDeductionsInstallmentsPeriod_019b46bd-0715-75e3-81f4-c2628dcabb87_terseLabel_en-US" xlink:label="lab_ck0000932782_SalaryDeductionsInstallmentsPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Salary deductions, installments period (in years)</link:label>
    <link:label id="lab_ck0000932782_SalaryDeductionsInstallmentsPeriod_label_en-US" xlink:label="lab_ck0000932782_SalaryDeductionsInstallmentsPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Salary Deductions, Installments, Period</link:label>
    <link:label id="lab_ck0000932782_SalaryDeductionsInstallmentsPeriod_documentation_en-US" xlink:label="lab_ck0000932782_SalaryDeductionsInstallmentsPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Salary Deductions, Installments, Period</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SalaryDeductionsInstallmentsPeriod" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SalaryDeductionsInstallmentsPeriod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SalaryDeductionsInstallmentsPeriod" xlink:to="lab_ck0000932782_SalaryDeductionsInstallmentsPeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans_019b46bd-0684-73dd-89b1-7a44e1e365d3_terseLabel_en-US" xlink:label="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total liability for defined benefits recognized in the consolidated statement of financial position at the end of the year</link:label>
    <link:label id="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans_019b46bd-0684-761c-8e5f-96a3bee7023b_periodStartLabel_en-US" xlink:label="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Defined benefit obligations at the beginning of the year</link:label>
    <link:label id="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans_019b46bd-0684-71d3-b02c-a7fbaf0062cd_periodEndLabel_en-US" xlink:label="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Defined benefit liabilities at end of year</link:label>
    <link:label id="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans_label_en-US" xlink:label="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net defined benefit liability (asset)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LiabilityAssetOfDefinedBenefitPlans"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:to="lab_ifrs-full_LiabilityAssetOfDefinedBenefitPlans" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProceedsFromNoncurrentBorrowings_019b46bd-0684-7c97-a7c4-7fa930df9eed_terseLabel_en-US" xlink:label="lab_ifrs-full_ProceedsFromNoncurrentBorrowings" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Obtain of revolving credit lines</link:label>
    <link:label id="lab_ifrs-full_ProceedsFromNoncurrentBorrowings_label_en-US" xlink:label="lab_ifrs-full_ProceedsFromNoncurrentBorrowings" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from non-current borrowings</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromNoncurrentBorrowings" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProceedsFromNoncurrentBorrowings"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProceedsFromNoncurrentBorrowings" xlink:to="lab_ifrs-full_ProceedsFromNoncurrentBorrowings" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InterestRateSwapsPositionTwoMember_019b46bd-05e4-76e2-aae6-44bc7e42df2e_terseLabel_en-US" xlink:label="lab_ck0000932782_InterestRateSwapsPositionTwoMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Petr&#243;leos Mexicanos pays fixed in U.S. dollar and receives floating in 6-month U.S. dollar SOFR + spread.</link:label>
    <link:label id="lab_ck0000932782_InterestRateSwapsPositionTwoMember_label_en-US" xlink:label="lab_ck0000932782_InterestRateSwapsPositionTwoMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Rate Swaps Position Two [member]</link:label>
    <link:label id="lab_ck0000932782_InterestRateSwapsPositionTwoMember_documentation_en-US" xlink:label="lab_ck0000932782_InterestRateSwapsPositionTwoMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interest rate swaps position two.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterestRateSwapsPositionTwoMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterestRateSwapsPositionTwoMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterestRateSwapsPositionTwoMember" xlink:to="lab_ck0000932782_InterestRateSwapsPositionTwoMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherDebtMember_019b46bd-0715-716a-9c03-a222791c92e5_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherDebtMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Others</link:label>
    <link:label id="lab_ck0000932782_OtherDebtMember_label_en-US" xlink:label="lab_ck0000932782_OtherDebtMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Debt [Member]</link:label>
    <link:label id="lab_ck0000932782_OtherDebtMember_documentation_en-US" xlink:label="lab_ck0000932782_OtherDebtMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Debt</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherDebtMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherDebtMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherDebtMember" xlink:to="lab_ck0000932782_OtherDebtMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherMember_019b46bd-0715-70a9-a7a6-9c02cf7dfdee_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other countries</link:label>
    <link:label id="lab_ck0000932782_OtherMember_label_en-US" xlink:label="lab_ck0000932782_OtherMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other [member]</link:label>
    <link:label id="lab_ck0000932782_OtherMember_documentation_en-US" xlink:label="lab_ck0000932782_OtherMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherMember" xlink:to="lab_ck0000932782_OtherMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseDeductibleDuties_019b46bd-053c-71f3-967b-67bc16e812ea_terseLabel_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseDeductibleDuties" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deductible duties</link:label>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseDeductibleDuties_019b46bd-053c-789a-805a-2bb5b289aea6_verboseLabel_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseDeductibleDuties" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Deductible Duty</link:label>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseDeductibleDuties_label_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseDeductibleDuties" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit-sharing duty expense deductible duties</link:label>
    <link:label id="lab_ck0000932782_ProfitsharingDutyExpenseDeductibleDuties_documentation_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyExpenseDeductibleDuties" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Profit-sharing duty expense deductible duties.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProfitsharingDutyExpenseDeductibleDuties" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProfitsharingDutyExpenseDeductibleDuties"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProfitsharingDutyExpenseDeductibleDuties" xlink:to="lab_ck0000932782_ProfitsharingDutyExpenseDeductibleDuties" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RightofuseAssets_019b46bd-05e4-7519-be97-637e77e8f4a6_terseLabel_en-US" xlink:label="lab_ifrs-full_RightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rights of use assets</link:label>
    <link:label id="lab_ifrs-full_RightofuseAssets_019b46bd-05e4-764f-901d-60772cb4970a_periodStartLabel_en-US" xlink:label="lab_ifrs-full_RightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance</link:label>
    <link:label id="lab_ifrs-full_RightofuseAssets_019b46bd-05e4-7053-b733-ceb49cd1f2bc_periodEndLabel_en-US" xlink:label="lab_ifrs-full_RightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance</link:label>
    <link:label id="lab_ifrs-full_RightofuseAssets_label_en-US" xlink:label="lab_ifrs-full_RightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Right-of-use assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RightofuseAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RightofuseAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RightofuseAssets" xlink:to="lab_ifrs-full_RightofuseAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_ContactPersonnelName_019b46bd-0684-7226-bde1-9c5611c988a7_terseLabel_en-US" xlink:label="lab_dei_ContactPersonnelName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contact Personnel Name</link:label>
    <link:label id="lab_dei_ContactPersonnelName_label_en-US" xlink:label="lab_dei_ContactPersonnelName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contact Personnel Name</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_ContactPersonnelName" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_ContactPersonnelName"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_ContactPersonnelName" xlink:to="lab_dei_ContactPersonnelName" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CarbonFromOtherFossilFuelsMember_019b46bd-0715-75a9-925a-98c3d764e489_terseLabel_en-US" xlink:label="lab_ck0000932782_CarbonFromOtherFossilFuelsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Carbon From Other Fossil Fuels</link:label>
    <link:label id="lab_ck0000932782_CarbonFromOtherFossilFuelsMember_label_en-US" xlink:label="lab_ck0000932782_CarbonFromOtherFossilFuelsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Carbon From Other Fossil Fuels [Member]</link:label>
    <link:label id="lab_ck0000932782_CarbonFromOtherFossilFuelsMember_documentation_en-US" xlink:label="lab_ck0000932782_CarbonFromOtherFossilFuelsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Carbon from other fossil fuels.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CarbonFromOtherFossilFuelsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CarbonFromOtherFossilFuelsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CarbonFromOtherFossilFuelsMember" xlink:to="lab_ck0000932782_CarbonFromOtherFossilFuelsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EstimatedFutureContractPaymentsYearFour_019b46bd-05e4-7257-b924-7cbf6ce81377_terseLabel_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPaymentsYearFour" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2029</link:label>
    <link:label id="lab_ck0000932782_EstimatedFutureContractPaymentsYearFour_label_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPaymentsYearFour" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Estimated future contract payments year four</link:label>
    <link:label id="lab_ck0000932782_EstimatedFutureContractPaymentsYearFour_documentation_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPaymentsYearFour" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Estimated future contract payments year four.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EstimatedFutureContractPaymentsYearFour" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EstimatedFutureContractPaymentsYearFour"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EstimatedFutureContractPaymentsYearFour" xlink:to="lab_ck0000932782_EstimatedFutureContractPaymentsYearFour" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionAndExcessGainsTaxes_019b46bd-0684-749b-8656-c5b07fcc51a6_negatedLabel_en-US" xlink:label="lab_ck0000932782_FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionAndExcessGainsTaxes" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Future production and excess gains taxes</link:label>
    <link:label id="lab_ck0000932782_FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionAndExcessGainsTaxes_label_en-US" xlink:label="lab_ck0000932782_FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionAndExcessGainsTaxes" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Future Net Cash Flows Relating To Proved Oil And Gas Reserves Future Production And Excess Gains Taxes</link:label>
    <link:label id="lab_ck0000932782_FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionAndExcessGainsTaxes_documentation_en-US" xlink:label="lab_ck0000932782_FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionAndExcessGainsTaxes" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Future net cash flows relating to proved oil and gas reserves future production and excess gains taxes.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionAndExcessGainsTaxes" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionAndExcessGainsTaxes"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionAndExcessGainsTaxes" xlink:to="lab_ck0000932782_FutureNetCashFlowsRelatingToProvedOilAndGasReservesFutureProductionAndExcessGainsTaxes" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_GainLossOnSaleOfLongLivedAssets_019b46bd-0684-7348-99c3-4f32e218a1b5_terseLabel_en-US" xlink:label="lab_ck0000932782_GainLossOnSaleOfLongLivedAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain on sale of fixed assets</link:label>
    <link:label id="lab_ck0000932782_GainLossOnSaleOfLongLivedAssets_label_en-US" xlink:label="lab_ck0000932782_GainLossOnSaleOfLongLivedAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain Loss on Sale of Long Lived Assets</link:label>
    <link:label id="lab_ck0000932782_GainLossOnSaleOfLongLivedAssets_documentation_en-US" xlink:label="lab_ck0000932782_GainLossOnSaleOfLongLivedAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gain loss on sale of long lived assets.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GainLossOnSaleOfLongLivedAssets" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GainLossOnSaleOfLongLivedAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_GainLossOnSaleOfLongLivedAssets" xlink:to="lab_ck0000932782_GainLossOnSaleOfLongLivedAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CurrentReceivablesFromContractsWithCustomers1_019b46bd-045f-7237-80b8-4233a79f93b5_verboseLabel_en-US" xlink:label="lab_ck0000932782_CurrentReceivablesFromContractsWithCustomers1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total domestic customers, net</link:label>
    <link:label id="lab_ck0000932782_CurrentReceivablesFromContractsWithCustomers1_label_en-US" xlink:label="lab_ck0000932782_CurrentReceivablesFromContractsWithCustomers1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current Receivables From Contracts With Customers 1</link:label>
    <link:label id="lab_ck0000932782_CurrentReceivablesFromContractsWithCustomers1_documentation_en-US" xlink:label="lab_ck0000932782_CurrentReceivablesFromContractsWithCustomers1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Current receivables from contracts with customers.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CurrentReceivablesFromContractsWithCustomers1" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CurrentReceivablesFromContractsWithCustomers1"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CurrentReceivablesFromContractsWithCustomers1" xlink:to="lab_ck0000932782_CurrentReceivablesFromContractsWithCustomers1" xlink:type="arc" order="1"/>
    <link:label id="lab_country_MX_019b46bd-0715-76df-8908-7abe77ebb0be_terseLabel_en-US" xlink:label="lab_country_MX" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Incentive for automotive fuels</link:label>
    <link:label id="lab_country_MX_019b46bd-0715-75ee-b976-e237927a5c30_verboseLabel_en-US" xlink:label="lab_country_MX" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Mexico</link:label>
    <link:label id="lab_country_MX_label_en-US" xlink:label="lab_country_MX" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">MEXICO</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_country_MX" xlink:href="https://xbrl.sec.gov/country/2025/country-2025.xsd#country_MX"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_country_MX" xlink:to="lab_country_MX" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SupplementalInformationLineItems_019b46bd-053d-7bcb-9a3a-5cd6c0332d47_terseLabel_en-US" xlink:label="lab_ck0000932782_SupplementalInformationLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Supplemental information [line items]</link:label>
    <link:label id="lab_ck0000932782_SupplementalInformationLineItems_label_en-US" xlink:label="lab_ck0000932782_SupplementalInformationLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Supplemental Information [line items]</link:label>
    <link:label id="lab_ck0000932782_SupplementalInformationLineItems_documentation_en-US" xlink:label="lab_ck0000932782_SupplementalInformationLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Supplemental information.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SupplementalInformationLineItems" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SupplementalInformationLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SupplementalInformationLineItems" xlink:to="lab_ck0000932782_SupplementalInformationLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_RevenueFromExport_019b46bd-05e4-7fe8-b859-534756e95480_terseLabel_en-US" xlink:label="lab_ck0000932782_RevenueFromExport" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Export</link:label>
    <link:label id="lab_ck0000932782_RevenueFromExport_019b46bd-05e4-7f2f-8e57-4db20d01554b_verboseLabel_en-US" xlink:label="lab_ck0000932782_RevenueFromExport" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total export sales</link:label>
    <link:label id="lab_ck0000932782_RevenueFromExport_019b46bd-05e4-7205-8d5c-9fd1aa609aea_netLabel_en-US" xlink:label="lab_ck0000932782_RevenueFromExport" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Total export sales</link:label>
    <link:label id="lab_ck0000932782_RevenueFromExport_label_en-US" xlink:label="lab_ck0000932782_RevenueFromExport" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue From Export</link:label>
    <link:label id="lab_ck0000932782_RevenueFromExport_documentation_en-US" xlink:label="lab_ck0000932782_RevenueFromExport" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Revenue from export.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RevenueFromExport" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RevenueFromExport"/>
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    <link:label id="lab_ifrs-full_DerivativesMember_019b46bd-0715-7e9b-aab5-8ec8e4415dc5_terseLabel_en-US" xlink:label="lab_ifrs-full_DerivativesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative financial instruments</link:label>
    <link:label id="lab_ifrs-full_DerivativesMember_label_en-US" xlink:label="lab_ifrs-full_DerivativesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivatives [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativesMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativesMember"/>
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    <link:label id="lab_ck0000932782_A4.875NotesDue2028Member_label_en-US" xlink:label="lab_ck0000932782_A4.875NotesDue2028Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">4.875% Notes Due 2028 [Member]</link:label>
    <link:label id="lab_ck0000932782_A4.875NotesDue2028Member_documentation_en-US" xlink:label="lab_ck0000932782_A4.875NotesDue2028Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">4.875% Notes Due 2028</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_A4.875NotesDue2028Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_A4.875NotesDue2028Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_A4.875NotesDue2028Member" xlink:to="lab_ck0000932782_A4.875NotesDue2028Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NumberOfSeriesOfDevelopmentBonds_019b46bd-053d-703a-9207-887afe1817cc_terseLabel_en-US" xlink:label="lab_ck0000932782_NumberOfSeriesOfDevelopmentBonds" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of series of development bonds</link:label>
    <link:label id="lab_ck0000932782_NumberOfSeriesOfDevelopmentBonds_label_en-US" xlink:label="lab_ck0000932782_NumberOfSeriesOfDevelopmentBonds" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Series of Development Bonds</link:label>
    <link:label id="lab_ck0000932782_NumberOfSeriesOfDevelopmentBonds_documentation_en-US" xlink:label="lab_ck0000932782_NumberOfSeriesOfDevelopmentBonds" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of Series of Development Bonds</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NumberOfSeriesOfDevelopmentBonds" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NumberOfSeriesOfDevelopmentBonds"/>
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    <link:label id="lab_ck0000932782_DisclosureOfFinancialLiabilitiesInterestAndPrincipalCashFlowMaturitiesTableTextBlock_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfFinancialLiabilitiesInterestAndPrincipalCashFlowMaturitiesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Financial Liabilities Interest And Principal Cash Flow Maturities [Table Text Block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfFinancialLiabilitiesInterestAndPrincipalCashFlowMaturitiesTableTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfFinancialLiabilitiesInterestAndPrincipalCashFlowMaturitiesTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Financial Liabilities Interest And Principal Cash Flow Maturities.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfFinancialLiabilitiesInterestAndPrincipalCashFlowMaturitiesTableTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfFinancialLiabilitiesInterestAndPrincipalCashFlowMaturitiesTableTextBlock"/>
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    <link:label id="lab_ck0000932782_ScheduleOfDerivativeInstruments1TextBlock_label_en-US" xlink:label="lab_ck0000932782_ScheduleOfDerivativeInstruments1TextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of derivative instruments 1 [Text Block]</link:label>
    <link:label id="lab_ck0000932782_ScheduleOfDerivativeInstruments1TextBlock_documentation_en-US" xlink:label="lab_ck0000932782_ScheduleOfDerivativeInstruments1TextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of derivative instruments.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ScheduleOfDerivativeInstruments1TextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ScheduleOfDerivativeInstruments1TextBlock"/>
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    <link:label id="lab_ck0000932782_BlockTwentyTwoMember_label_en-US" xlink:label="lab_ck0000932782_BlockTwentyTwoMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Block twenty two [member]</link:label>
    <link:label id="lab_ck0000932782_BlockTwentyTwoMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockTwentyTwoMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block twenty two.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockTwentyTwoMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockTwentyTwoMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BlockTwentyTwoMember" xlink:to="lab_ck0000932782_BlockTwentyTwoMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod_019b46bd-053c-7e76-aa0c-4ac8a5ea2ecd_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">(Profit) loss sharing in associates, net</link:label>
    <link:label id="lab_ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod_label_en-US" xlink:label="lab_ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share of profit (loss) of associates accounted for using equity method</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShareOfProfitLossOfAssociatesAccountedForUsingEquityMethod"/>
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    <link:label id="lab_ifrs-full_Equity_019b46bd-05e4-7a0b-aed2-beff4ff4de1f_totalLabel_en-US" xlink:label="lab_ifrs-full_Equity" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total equity (deficit)</link:label>
    <link:label id="lab_ifrs-full_Equity_019b46bd-05e4-743b-a0a6-cc620684efd4_periodStartLabel_en-US" xlink:label="lab_ifrs-full_Equity" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance</link:label>
    <link:label id="lab_ifrs-full_Equity_019b46bd-05e4-7218-9968-56786a8289dd_periodEndLabel_en-US" xlink:label="lab_ifrs-full_Equity" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending Balance</link:label>
    <link:label id="lab_ifrs-full_Equity_019b46bd-05e4-7a2c-aac9-36df0889c586_terseLabel_en-US" xlink:label="lab_ifrs-full_Equity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total equity (deficit)</link:label>
    <link:label id="lab_ifrs-full_Equity_019b46bd-05e4-7bb7-b284-54d0d206cee1_verboseLabel_en-US" xlink:label="lab_ifrs-full_Equity" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Equity (deficit), net</link:label>
    <link:label id="lab_ifrs-full_Equity_label_en-US" xlink:label="lab_ifrs-full_Equity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Equity"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Equity" xlink:to="lab_ifrs-full_Equity" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DevelopedAndUndevelopedReservesNetPeriodIncreasePercentage_019b46bd-05e4-7bd1-8b9a-c568be0e8bf1_terseLabel_en-US" xlink:label="lab_ck0000932782_DevelopedAndUndevelopedReservesNetPeriodIncreasePercentage" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of developed and undeveloped reserves</link:label>
    <link:label id="lab_ck0000932782_DevelopedAndUndevelopedReservesNetPeriodIncreasePercentage_label_en-US" xlink:label="lab_ck0000932782_DevelopedAndUndevelopedReservesNetPeriodIncreasePercentage" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Developed And Undeveloped Reserves Net Period Increase Percentage</link:label>
    <link:label id="lab_ck0000932782_DevelopedAndUndevelopedReservesNetPeriodIncreasePercentage_documentation_en-US" xlink:label="lab_ck0000932782_DevelopedAndUndevelopedReservesNetPeriodIncreasePercentage" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Developed and undeveloped reserves net Period increase percentage.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DevelopedAndUndevelopedReservesNetPeriodIncreasePercentage" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DevelopedAndUndevelopedReservesNetPeriodIncreasePercentage"/>
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    <link:label id="lab_ck0000932782_GovernmentContributionsNatureOfContributionDomain_019b46bd-0715-7c6f-bf0f-27abed95f3b6_terseLabel_en-US" xlink:label="lab_ck0000932782_GovernmentContributionsNatureOfContributionDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Government Contributions, Nature Of Contribution [Domain]</link:label>
    <link:label id="lab_ck0000932782_GovernmentContributionsNatureOfContributionDomain_label_en-US" xlink:label="lab_ck0000932782_GovernmentContributionsNatureOfContributionDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Government Contributions, Nature Of Contribution [Domain]</link:label>
    <link:label id="lab_ck0000932782_GovernmentContributionsNatureOfContributionDomain_documentation_en-US" xlink:label="lab_ck0000932782_GovernmentContributionsNatureOfContributionDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Government Contributions, Nature Of Contribution [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GovernmentContributionsNatureOfContributionDomain" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GovernmentContributionsNatureOfContributionDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_GovernmentContributionsNatureOfContributionDomain" xlink:to="lab_ck0000932782_GovernmentContributionsNatureOfContributionDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherRevenueAndExpenseNetTable_019b46bd-053c-725d-b8f2-ab2e3e95496d_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherRevenueAndExpenseNetTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Revenue And Expense Net [Table]</link:label>
    <link:label id="lab_ck0000932782_OtherRevenueAndExpenseNetTable_label_en-US" xlink:label="lab_ck0000932782_OtherRevenueAndExpenseNetTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Revenue And Expense Net [Table]</link:label>
    <link:label id="lab_ck0000932782_OtherRevenueAndExpenseNetTable_documentation_en-US" xlink:label="lab_ck0000932782_OtherRevenueAndExpenseNetTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Revenue And Expense Net</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherRevenueAndExpenseNetTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherRevenueAndExpenseNetTable"/>
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    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfCommitmentsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfCommitmentsExplanatory"/>
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    <link:label id="lab_ifrs-full_GrossProfit_019b46bd-0684-77d3-bd7e-82e834b4f6a0_terseLabel_en-US" xlink:label="lab_ifrs-full_GrossProfit" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gross income</link:label>
    <link:label id="lab_ifrs-full_GrossProfit_label_en-US" xlink:label="lab_ifrs-full_GrossProfit" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gross profit</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GrossProfit" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GrossProfit"/>
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    <link:label id="lab_ck0000932782_NetForeignExchangeLossGain_label_en-US" xlink:label="lab_ck0000932782_NetForeignExchangeLossGain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Foreign Exchange Loss Gain</link:label>
    <link:label id="lab_ck0000932782_NetForeignExchangeLossGain_documentation_en-US" xlink:label="lab_ck0000932782_NetForeignExchangeLossGain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net foreign exchange loss gain.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NetForeignExchangeLossGain" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NetForeignExchangeLossGain"/>
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    <link:label id="lab_ck0000932782_ActuarialAssumptionOfInflationRatesIncreaseDecreaseOfOnePercentageMember_documentation_en-US" xlink:label="lab_ck0000932782_ActuarialAssumptionOfInflationRatesIncreaseDecreaseOfOnePercentageMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Actuarial assumption of inflation rates increase decrease of one percentage.</link:label>
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    <link:label id="lab_ck0000932782_CurrencyOptionsPositionTwoMember_documentation_en-US" xlink:label="lab_ck0000932782_CurrencyOptionsPositionTwoMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Currency options position two [member]</link:label>
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    <link:label id="lab_ck0000932782_InterbankYieldCurvesSensitivityMember_label_en-US" xlink:label="lab_ck0000932782_InterbankYieldCurvesSensitivityMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interbank Yield Curves Sensitivity [Member]</link:label>
    <link:label id="lab_ck0000932782_InterbankYieldCurvesSensitivityMember_documentation_en-US" xlink:label="lab_ck0000932782_InterbankYieldCurvesSensitivityMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interbank yield curves sensitivity.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterbankYieldCurvesSensitivityMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterbankYieldCurvesSensitivityMember"/>
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    <link:label id="lab_ck0000932782_PositiveTaxEffect_documentation_en-US" xlink:label="lab_ck0000932782_PositiveTaxEffect" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Positive Tax Effect</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PositiveTaxEffect" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PositiveTaxEffect"/>
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    <link:label id="lab_ck0000932782_ExportCreditAgenciesMember_019b46bd-05e4-7845-9436-b407f4bdf4fa_terseLabel_en-US" xlink:label="lab_ck0000932782_ExportCreditAgenciesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Export customers</link:label>
    <link:label id="lab_ck0000932782_ExportCreditAgenciesMember_label_en-US" xlink:label="lab_ck0000932782_ExportCreditAgenciesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Export Credit Agencies [member]</link:label>
    <link:label id="lab_ck0000932782_ExportCreditAgenciesMember_documentation_en-US" xlink:label="lab_ck0000932782_ExportCreditAgenciesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Export credit agencies.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ExportCreditAgenciesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ExportCreditAgenciesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ExportCreditAgenciesMember" xlink:to="lab_ck0000932782_ExportCreditAgenciesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ExpensesArisingFromExplorationAndExtraction_019b46bd-0715-772f-8fc9-c50b36b15f6d_terseLabel_en-US" xlink:label="lab_ck0000932782_ExpensesArisingFromExplorationAndExtraction" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exploration and Extraction Hydrocarbons Duty and taxes</link:label>
    <link:label id="lab_ck0000932782_ExpensesArisingFromExplorationAndExtraction_label_en-US" xlink:label="lab_ck0000932782_ExpensesArisingFromExplorationAndExtraction" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expenses Arising From Exploration And Extraction</link:label>
    <link:label id="lab_ck0000932782_ExpensesArisingFromExplorationAndExtraction_documentation_en-US" xlink:label="lab_ck0000932782_ExpensesArisingFromExplorationAndExtraction" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Expenses Arising From Exploration And Extraction</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ExpensesArisingFromExplorationAndExtraction" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ExpensesArisingFromExplorationAndExtraction"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ExpensesArisingFromExplorationAndExtraction" xlink:to="lab_ck0000932782_ExpensesArisingFromExplorationAndExtraction" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherCurrenciesMember_019b46bd-05e4-72ea-8e98-3c990c499fc2_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherCurrenciesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other currencies</link:label>
    <link:label id="lab_ck0000932782_OtherCurrenciesMember_label_en-US" xlink:label="lab_ck0000932782_OtherCurrenciesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Currencies [member]</link:label>
    <link:label id="lab_ck0000932782_OtherCurrenciesMember_documentation_en-US" xlink:label="lab_ck0000932782_OtherCurrenciesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other currencies [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherCurrenciesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherCurrenciesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherCurrenciesMember" xlink:to="lab_ck0000932782_OtherCurrenciesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FinancedPublicWorksContractsMember_019b46bd-0715-725d-90d7-52ec2fa5e806_terseLabel_en-US" xlink:label="lab_ck0000932782_FinancedPublicWorksContractsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financed public works contracts</link:label>
    <link:label id="lab_ck0000932782_FinancedPublicWorksContractsMember_label_en-US" xlink:label="lab_ck0000932782_FinancedPublicWorksContractsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financed Public Works Contracts [member]</link:label>
    <link:label id="lab_ck0000932782_FinancedPublicWorksContractsMember_documentation_en-US" xlink:label="lab_ck0000932782_FinancedPublicWorksContractsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financed public works contracts.</link:label>
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    <link:label id="lab_ck0000932782_CrossCurrencySwapsPositionOneMember_label_en-US" xlink:label="lab_ck0000932782_CrossCurrencySwapsPositionOneMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cross Currency Swaps Position One [member]</link:label>
    <link:label id="lab_ck0000932782_CrossCurrencySwapsPositionOneMember_documentation_en-US" xlink:label="lab_ck0000932782_CrossCurrencySwapsPositionOneMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cross currency swaps position one.</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CrossCurrencySwapsPositionOneMember" xlink:to="lab_ck0000932782_CrossCurrencySwapsPositionOneMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_Level2OfFairValueHierarchyMember_019b46bd-0715-754c-afdf-6629f325badf_terseLabel_en-US" xlink:label="lab_ifrs-full_Level2OfFairValueHierarchyMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Level 2</link:label>
    <link:label id="lab_ifrs-full_Level2OfFairValueHierarchyMember_019b46bd-0715-744a-aa64-4250f566fd09_verboseLabel_en-US" xlink:label="lab_ifrs-full_Level2OfFairValueHierarchyMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Significant observable inputs (level 2)</link:label>
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    <link:label id="lab_ck0000932782_AllowanceAbstract_documentation_en-US" xlink:label="lab_ck0000932782_AllowanceAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Allowance</link:label>
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    <link:label id="lab_ifrs-full_ProfitLossAttributableToOwnersOfParent_label_en-US" xlink:label="lab_ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit (loss), attributable to owners of parent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossAttributableToOwnersOfParent" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLossAttributableToOwnersOfParent"/>
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    <link:label id="lab_ck0000932782_TransactionsRelatedToTaxContingentLiabilityAxis_019b46bd-053c-70c3-af03-fd2448ab447c_terseLabel_en-US" xlink:label="lab_ck0000932782_TransactionsRelatedToTaxContingentLiabilityAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Transactions related to tax contingent liability [axis]</link:label>
    <link:label id="lab_ck0000932782_TransactionsRelatedToTaxContingentLiabilityAxis_label_en-US" xlink:label="lab_ck0000932782_TransactionsRelatedToTaxContingentLiabilityAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Transactions related to tax contingent liability [axis]</link:label>
    <link:label id="lab_ck0000932782_TransactionsRelatedToTaxContingentLiabilityAxis_documentation_en-US" xlink:label="lab_ck0000932782_TransactionsRelatedToTaxContingentLiabilityAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Transactions related to tax contingent liability.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TransactionsRelatedToTaxContingentLiabilityAxis" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TransactionsRelatedToTaxContingentLiabilityAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TransactionsRelatedToTaxContingentLiabilityAxis" xlink:to="lab_ck0000932782_TransactionsRelatedToTaxContingentLiabilityAxis" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_OtherContributionPayable_label_en-US" xlink:label="lab_ck0000932782_OtherContributionPayable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Contribution Payable</link:label>
    <link:label id="lab_ck0000932782_OtherContributionPayable_documentation_en-US" xlink:label="lab_ck0000932782_OtherContributionPayable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Contribution Payable</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherContributionPayable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherContributionPayable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherContributionPayable" xlink:to="lab_ck0000932782_OtherContributionPayable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfEquityTable_019b46bd-05e4-780e-ad85-49a1cbea4c79_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfEquityTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of equity [table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfEquityTable_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfEquityTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of equity [table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfEquityTable_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfEquityTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of equity [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfEquityTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfEquityTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfEquityTable" xlink:to="lab_ck0000932782_DisclosureOfEquityTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IncomeTaxPayablesFeeIncreasesPeriod_019b46bd-053c-7d4f-9ec4-4eb62340aa38_terseLabel_en-US" xlink:label="lab_ck0000932782_IncomeTaxPayablesFeeIncreasesPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fee increases, period</link:label>
    <link:label id="lab_ck0000932782_IncomeTaxPayablesFeeIncreasesPeriod_label_en-US" xlink:label="lab_ck0000932782_IncomeTaxPayablesFeeIncreasesPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Payables, Fee Increases, Period</link:label>
    <link:label id="lab_ck0000932782_IncomeTaxPayablesFeeIncreasesPeriod_documentation_en-US" xlink:label="lab_ck0000932782_IncomeTaxPayablesFeeIncreasesPeriod" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Income Tax Payables, Fee Increases, Period</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncomeTaxPayablesFeeIncreasesPeriod" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncomeTaxPayablesFeeIncreasesPeriod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IncomeTaxPayablesFeeIncreasesPeriod" xlink:to="lab_ck0000932782_IncomeTaxPayablesFeeIncreasesPeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BBBGradeMember_019b46bd-05e4-7f16-ae98-4a56c1dc52e9_terseLabel_en-US" xlink:label="lab_ck0000932782_BBBGradeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">BBB</link:label>
    <link:label id="lab_ck0000932782_BBBGradeMember_label_en-US" xlink:label="lab_ck0000932782_BBBGradeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">BBB [member]</link:label>
    <link:label id="lab_ck0000932782_BBBGradeMember_documentation_en-US" xlink:label="lab_ck0000932782_BBBGradeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">BBB</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BBBGradeMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BBBGradeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BBBGradeMember" xlink:to="lab_ck0000932782_BBBGradeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IntegratedContractsExpenses_019b46bd-0684-7c8d-8f20-bfb0d3fe795b_terseLabel_en-US" xlink:label="lab_ck0000932782_IntegratedContractsExpenses" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Integrated Contracts</link:label>
    <link:label id="lab_ck0000932782_IntegratedContractsExpenses_label_en-US" xlink:label="lab_ck0000932782_IntegratedContractsExpenses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Integrated Contracts Expenses</link:label>
    <link:label id="lab_ck0000932782_IntegratedContractsExpenses_documentation_en-US" xlink:label="lab_ck0000932782_IntegratedContractsExpenses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Integrated contracts expenses.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IntegratedContractsExpenses" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IntegratedContractsExpenses"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IntegratedContractsExpenses" xlink:to="lab_ck0000932782_IntegratedContractsExpenses" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AmountDueToSuppliers_019da9c1-358f-77c3-bb8c-b343c22a4c73_terseLabel_en-US" xlink:label="lab_ck0000932782_AmountDueToSuppliers" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amount due to suppliers</link:label>
    <link:label id="lab_ck0000932782_AmountDueToSuppliers_label_en-US" xlink:label="lab_ck0000932782_AmountDueToSuppliers" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amount Due To Suppliers</link:label>
    <link:label id="lab_ck0000932782_AmountDueToSuppliers_documentation_en-US" xlink:label="lab_ck0000932782_AmountDueToSuppliers" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount Due To Suppliers</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AmountDueToSuppliers" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AmountDueToSuppliers"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AmountDueToSuppliers" xlink:to="lab_ck0000932782_AmountDueToSuppliers" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherRevenueAndExpenseNetAbstract_019b46bd-0684-7041-b3d6-f7e176167387_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherRevenueAndExpenseNetAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Revenue and Expense Net [abstract]</link:label>
    <link:label id="lab_ck0000932782_OtherRevenueAndExpenseNetAbstract_label_en-US" xlink:label="lab_ck0000932782_OtherRevenueAndExpenseNetAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Revenue and Expense Net [abstract]</link:label>
    <link:label id="lab_ck0000932782_OtherRevenueAndExpenseNetAbstract_documentation_en-US" xlink:label="lab_ck0000932782_OtherRevenueAndExpenseNetAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Revenue and Expense Net [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherRevenueAndExpenseNetAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherRevenueAndExpenseNetAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherRevenueAndExpenseNetAbstract" xlink:to="lab_ck0000932782_OtherRevenueAndExpenseNetAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NumberOfMajorCustomers_019b46bd-0715-7c9d-9a03-85295c4c08bd_terseLabel_en-US" xlink:label="lab_ck0000932782_NumberOfMajorCustomers" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of major customers</link:label>
    <link:label id="lab_ck0000932782_NumberOfMajorCustomers_label_en-US" xlink:label="lab_ck0000932782_NumberOfMajorCustomers" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Major Customers</link:label>
    <link:label id="lab_ck0000932782_NumberOfMajorCustomers_documentation_en-US" xlink:label="lab_ck0000932782_NumberOfMajorCustomers" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of major customers.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NumberOfMajorCustomers" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NumberOfMajorCustomers"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NumberOfMajorCustomers" xlink:to="lab_ck0000932782_NumberOfMajorCustomers" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PlanAssetsHeldInTrustDomain_019b46bd-05e4-7b83-bea6-cbcc0469f452_terseLabel_en-US" xlink:label="lab_ck0000932782_PlanAssetsHeldInTrustDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plan Assets Held In Trust [Domain]</link:label>
    <link:label id="lab_ck0000932782_PlanAssetsHeldInTrustDomain_label_en-US" xlink:label="lab_ck0000932782_PlanAssetsHeldInTrustDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Assets Held In Trust [Domain]</link:label>
    <link:label id="lab_ck0000932782_PlanAssetsHeldInTrustDomain_documentation_en-US" xlink:label="lab_ck0000932782_PlanAssetsHeldInTrustDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Plan assets held in trust.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PlanAssetsHeldInTrustDomain" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PlanAssetsHeldInTrustDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PlanAssetsHeldInTrustDomain" xlink:to="lab_ck0000932782_PlanAssetsHeldInTrustDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfDetailedInformationAboutCostAndExpensesByNatureExplanatory_019b46bd-053c-7661-b0f9-dffc65987e40_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfDetailedInformationAboutCostAndExpensesByNatureExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Costs and Expenses by Nature</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfDetailedInformationAboutCostAndExpensesByNatureExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfDetailedInformationAboutCostAndExpensesByNatureExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about cost and expenses by nature [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfDetailedInformationAboutCostAndExpensesByNatureExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfDetailedInformationAboutCostAndExpensesByNatureExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about cost and expenses by nature [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfDetailedInformationAboutCostAndExpensesByNatureExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfDetailedInformationAboutCostAndExpensesByNatureExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfDetailedInformationAboutCostAndExpensesByNatureExplanatory" xlink:to="lab_ck0000932782_DisclosureOfDetailedInformationAboutCostAndExpensesByNatureExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLoss_019b46bd-0684-72c9-bd5b-1e6ea1ca535b_terseLabel_en-US" xlink:label="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial liabilities at fair value through profit or loss</link:label>
    <link:label id="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLoss_label_en-US" xlink:label="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLoss" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial liabilities at fair value through profit or loss</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLoss" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLoss"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLoss" xlink:to="lab_ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLoss" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PrimaryLogisticsMember_019b46bd-0684-7e39-9461-3d834f74b9a1_terseLabel_en-US" xlink:label="lab_ck0000932782_PrimaryLogisticsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Primary logistics</link:label>
    <link:label id="lab_ck0000932782_PrimaryLogisticsMember_label_en-US" xlink:label="lab_ck0000932782_PrimaryLogisticsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Primary logistics [member]</link:label>
    <link:label id="lab_ck0000932782_PrimaryLogisticsMember_documentation_en-US" xlink:label="lab_ck0000932782_PrimaryLogisticsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Primary logistics.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PrimaryLogisticsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PrimaryLogisticsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PrimaryLogisticsMember" xlink:to="lab_ck0000932782_PrimaryLogisticsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_A2nd.GroupMember_019d60c6-e665-7469-814c-abfa3995ce92_terseLabel_en-US" xlink:label="lab_ck0000932782_A2nd.GroupMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2nd. Group</link:label>
    <link:label id="lab_ck0000932782_A2nd.GroupMember_label_en-US" xlink:label="lab_ck0000932782_A2nd.GroupMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">2nd. Group [Member]</link:label>
    <link:label id="lab_ck0000932782_A2nd.GroupMember_documentation_en-US" xlink:label="lab_ck0000932782_A2nd.GroupMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">2nd. Group</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_A2nd.GroupMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_A2nd.GroupMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_A2nd.GroupMember" xlink:to="lab_ck0000932782_A2nd.GroupMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DeferredTaxAssets_019b46bd-0684-78cf-8518-1d646973f5e4_verboseLabel_en-US" xlink:label="lab_ifrs-full_DeferredTaxAssets" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Deferred income taxes and duties</link:label>
    <link:label id="lab_ifrs-full_DeferredTaxAssets_019b46bd-0684-7a35-919e-b85cc7cc54f6_totalLabel_en-US" xlink:label="lab_ifrs-full_DeferredTaxAssets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Deferred taxes</link:label>
    <link:label id="lab_ifrs-full_DeferredTaxAssets_019b46bd-0684-78f2-a5d5-cff596624d4d_terseLabel_en-US" xlink:label="lab_ifrs-full_DeferredTaxAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred taxes</link:label>
    <link:label id="lab_ifrs-full_DeferredTaxAssets_label_en-US" xlink:label="lab_ifrs-full_DeferredTaxAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred tax assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DeferredTaxAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DeferredTaxAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DeferredTaxAssets" xlink:to="lab_ifrs-full_DeferredTaxAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_Inventories_019b46bd-0684-7431-956f-96a9ba88e902_terseLabel_en-US" xlink:label="lab_ifrs-full_Inventories" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventories</link:label>
    <link:label id="lab_ifrs-full_Inventories_label_en-US" xlink:label="lab_ifrs-full_Inventories" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current inventories</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Inventories" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Inventories"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Inventories" xlink:to="lab_ifrs-full_Inventories" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncontrollingInterestsMember_019b46bd-0684-785b-81af-b193ab54a38b_terseLabel_en-US" xlink:label="lab_ifrs-full_NoncontrollingInterestsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non- controlling interest</link:label>
    <link:label id="lab_ifrs-full_NoncontrollingInterestsMember_label_en-US" xlink:label="lab_ifrs-full_NoncontrollingInterestsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-controlling interests [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncontrollingInterestsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncontrollingInterestsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncontrollingInterestsMember" xlink:to="lab_ifrs-full_NoncontrollingInterestsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests_019b46bd-053d-7a2c-b9fa-214f0157d00e_terseLabel_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-controlling interest</link:label>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests_label_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comprehensive income, attributable to non-controlling interests</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:to="lab_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FedEffectiveMember_019b46bd-053c-7cd3-8fa0-6984746d8d56_terseLabel_en-US" xlink:label="lab_ck0000932782_FedEffectiveMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fed Effective</link:label>
    <link:label id="lab_ck0000932782_FedEffectiveMember_label_en-US" xlink:label="lab_ck0000932782_FedEffectiveMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fed Effective [Member]</link:label>
    <link:label id="lab_ck0000932782_FedEffectiveMember_documentation_en-US" xlink:label="lab_ck0000932782_FedEffectiveMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fed Effective</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FedEffectiveMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FedEffectiveMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FedEffectiveMember" xlink:to="lab_ck0000932782_FedEffectiveMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_DocumentAccountingStandard_019b46bd-0684-7e64-bcd7-b83490047d40_terseLabel_en-US" xlink:label="lab_dei_DocumentAccountingStandard" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Accounting Standard</link:label>
    <link:label id="lab_dei_DocumentAccountingStandard_label_en-US" xlink:label="lab_dei_DocumentAccountingStandard" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Accounting Standard</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentAccountingStandard" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentAccountingStandard"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentAccountingStandard" xlink:to="lab_dei_DocumentAccountingStandard" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LeaseLiabilitiesIncurred_019b46bd-05e4-79b1-a9b4-f13e4c4cd2c2_verboseLabel_en-US" xlink:label="lab_ck0000932782_LeaseLiabilitiesIncurred" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Additions</link:label>
    <link:label id="lab_ck0000932782_LeaseLiabilitiesIncurred_label_en-US" xlink:label="lab_ck0000932782_LeaseLiabilitiesIncurred" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Liabilities Incurred</link:label>
    <link:label id="lab_ck0000932782_LeaseLiabilitiesIncurred_documentation_en-US" xlink:label="lab_ck0000932782_LeaseLiabilitiesIncurred" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease liabilities incurred.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LeaseLiabilitiesIncurred" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LeaseLiabilitiesIncurred"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LeaseLiabilitiesIncurred" xlink:to="lab_ck0000932782_LeaseLiabilitiesIncurred" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FinancialInstrumentsFairValue_019b46bd-0715-7ff5-942c-fbc0e0862bb3_terseLabel_en-US" xlink:label="lab_ck0000932782_FinancialInstrumentsFairValue" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value</link:label>
    <link:label id="lab_ck0000932782_FinancialInstrumentsFairValue_label_en-US" xlink:label="lab_ck0000932782_FinancialInstrumentsFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial instruments, fair value</link:label>
    <link:label id="lab_ck0000932782_FinancialInstrumentsFairValue_documentation_en-US" xlink:label="lab_ck0000932782_FinancialInstrumentsFairValue" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financial instruments, fair value.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FinancialInstrumentsFairValue" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FinancialInstrumentsFairValue"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FinancialInstrumentsFairValue" xlink:to="lab_ck0000932782_FinancialInstrumentsFairValue" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems_019b46bd-0684-78bc-8219-520cb324af5f_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of quantitative information about right-of-use assets [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of quantitative information about right-of-use assets [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfQuantitativeInformationAboutRightofuseAssetsLineItems"/>
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    <link:label id="lab_ck0000932782_GovernmentAgencyAxis_019b46bd-053d-7402-bc3e-72f228063175_terseLabel_en-US" xlink:label="lab_ck0000932782_GovernmentAgencyAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Government Agency [Axis]</link:label>
    <link:label id="lab_ck0000932782_GovernmentAgencyAxis_label_en-US" xlink:label="lab_ck0000932782_GovernmentAgencyAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Government Agency [Axis]</link:label>
    <link:label id="lab_ck0000932782_GovernmentAgencyAxis_documentation_en-US" xlink:label="lab_ck0000932782_GovernmentAgencyAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Government Agency</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GovernmentAgencyAxis" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GovernmentAgencyAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_GovernmentAgencyAxis" xlink:to="lab_ck0000932782_GovernmentAgencyAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DeferredIncomeTaxAssetsAbstract_019b46bd-05e4-71be-93d0-5bcb10ce386d_terseLabel_en-US" xlink:label="lab_ck0000932782_DeferredIncomeTaxAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred income tax asset:</link:label>
    <link:label id="lab_ck0000932782_DeferredIncomeTaxAssetsAbstract_label_en-US" xlink:label="lab_ck0000932782_DeferredIncomeTaxAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred income tax assets [abstract]</link:label>
    <link:label id="lab_ck0000932782_DeferredIncomeTaxAssetsAbstract_documentation_en-US" xlink:label="lab_ck0000932782_DeferredIncomeTaxAssetsAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred income tax assets.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DeferredIncomeTaxAssetsAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DeferredIncomeTaxAssetsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DeferredIncomeTaxAssetsAbstract" xlink:to="lab_ck0000932782_DeferredIncomeTaxAssetsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DebtInstrumentsAmountContributedToFairValueOfPlanAssets_019b46bd-053c-7133-a21b-b4e1e2a79c61_terseLabel_en-US" xlink:label="lab_ifrs-full_DebtInstrumentsAmountContributedToFairValueOfPlanAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt instruments</link:label>
    <link:label id="lab_ifrs-full_DebtInstrumentsAmountContributedToFairValueOfPlanAssets_label_en-US" xlink:label="lab_ifrs-full_DebtInstrumentsAmountContributedToFairValueOfPlanAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt instruments, amount contributed to fair value of plan assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DebtInstrumentsAmountContributedToFairValueOfPlanAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DebtInstrumentsAmountContributedToFairValueOfPlanAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DebtInstrumentsAmountContributedToFairValueOfPlanAssets" xlink:to="lab_ifrs-full_DebtInstrumentsAmountContributedToFairValueOfPlanAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BlockSixteenOfTampicoMisantlaMember_019b46bd-0684-79af-b82f-fc9744cdebc8_terseLabel_en-US" xlink:label="lab_ck0000932782_BlockSixteenOfTampicoMisantlaMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Block 16 of Tampico Misantla</link:label>
    <link:label id="lab_ck0000932782_BlockSixteenOfTampicoMisantlaMember_label_en-US" xlink:label="lab_ck0000932782_BlockSixteenOfTampicoMisantlaMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Block sixteen Of Tampico Misantla [member]</link:label>
    <link:label id="lab_ck0000932782_BlockSixteenOfTampicoMisantlaMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockSixteenOfTampicoMisantlaMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block sixteen Of Tampico Misantla.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockSixteenOfTampicoMisantlaMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockSixteenOfTampicoMisantlaMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BlockSixteenOfTampicoMisantlaMember" xlink:to="lab_ck0000932782_BlockSixteenOfTampicoMisantlaMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset_019b46bd-05e4-78e2-94f9-e6ba76c91fab_terseLabel_en-US" xlink:label="lab_ifrs-full_ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Change in financial assumptions</link:label>
    <link:label id="lab_ifrs-full_ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset_label_en-US" xlink:label="lab_ifrs-full_ActuarialGainsLossesArisingFromChangesInFinancialAssumptionsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Decrease (increase) in net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in financial assumptions</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_019b46bd-0684-7be2-a274-4ce7d3143820_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about financial instruments [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfFinancialInstrumentsLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about financial instruments [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFinancialInstrumentsLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:to="lab_ifrs-full_DisclosureOfFinancialInstrumentsLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FivePointThreeFiveZeroPercentNotesDueTwoThousandTwentyEightmemberMember_019b46bd-05e4-7661-a52f-abca69bff235_terseLabel_en-US" xlink:label="lab_ck0000932782_FivePointThreeFiveZeroPercentNotesDueTwoThousandTwentyEightmemberMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">5.350% Notes due 2028</link:label>
    <link:label id="lab_ck0000932782_FivePointThreeFiveZeroPercentNotesDueTwoThousandTwentyEightmemberMember_label_en-US" xlink:label="lab_ck0000932782_FivePointThreeFiveZeroPercentNotesDueTwoThousandTwentyEightmemberMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Five point three five zero percent Notes due two thousand twenty eight member [Member]</link:label>
    <link:label id="lab_ck0000932782_FivePointThreeFiveZeroPercentNotesDueTwoThousandTwentyEightmemberMember_documentation_en-US" xlink:label="lab_ck0000932782_FivePointThreeFiveZeroPercentNotesDueTwoThousandTwentyEightmemberMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Five point three five zero percent notes due two thousand twenty eight.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FivePointThreeFiveZeroPercentNotesDueTwoThousandTwentyEightmemberMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FivePointThreeFiveZeroPercentNotesDueTwoThousandTwentyEightmemberMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FivePointThreeFiveZeroPercentNotesDueTwoThousandTwentyEightmemberMember" xlink:to="lab_ck0000932782_FivePointThreeFiveZeroPercentNotesDueTwoThousandTwentyEightmemberMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SeventeenSeriesOfDevelopmentBondsMember_019b46bd-0684-7565-96c8-d98364c5cb80_terseLabel_en-US" xlink:label="lab_ck0000932782_SeventeenSeriesOfDevelopmentBondsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Seventeen Series of Development Bonds</link:label>
    <link:label id="lab_ck0000932782_SeventeenSeriesOfDevelopmentBondsMember_label_en-US" xlink:label="lab_ck0000932782_SeventeenSeriesOfDevelopmentBondsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Seventeen Series of Development Bonds [Member]</link:label>
    <link:label id="lab_ck0000932782_SeventeenSeriesOfDevelopmentBondsMember_documentation_en-US" xlink:label="lab_ck0000932782_SeventeenSeriesOfDevelopmentBondsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Seventeen Series of Development Bonds [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SeventeenSeriesOfDevelopmentBondsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SeventeenSeriesOfDevelopmentBondsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SeventeenSeriesOfDevelopmentBondsMember" xlink:to="lab_ck0000932782_SeventeenSeriesOfDevelopmentBondsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_UnrealizedForeignExchangeIncomeLossOfReserveForWellAbandonment_019b46bd-0715-798f-bc46-59fe8f497936_verboseLabel_en-US" xlink:label="lab_ck0000932782_UnrealizedForeignExchangeIncomeLossOfReserveForWellAbandonment" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Unrealized foreign exchange loss in discount rate of reserve for well abandonment</link:label>
    <link:label id="lab_ck0000932782_UnrealizedForeignExchangeIncomeLossOfReserveForWellAbandonment_label_en-US" xlink:label="lab_ck0000932782_UnrealizedForeignExchangeIncomeLossOfReserveForWellAbandonment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unrealized Foreign Exchange Income Loss Of Reserve For Well Abandonment</link:label>
    <link:label id="lab_ck0000932782_UnrealizedForeignExchangeIncomeLossOfReserveForWellAbandonment_documentation_en-US" xlink:label="lab_ck0000932782_UnrealizedForeignExchangeIncomeLossOfReserveForWellAbandonment" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Unrealized foreign exchange income loss&#160;of reserve for well abandonment</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_UnrealizedForeignExchangeIncomeLossOfReserveForWellAbandonment" xlink:href="ck0000932782-20251231.xsd#ck0000932782_UnrealizedForeignExchangeIncomeLossOfReserveForWellAbandonment"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_UnrealizedForeignExchangeIncomeLossOfReserveForWellAbandonment" xlink:to="lab_ck0000932782_UnrealizedForeignExchangeIncomeLossOfReserveForWellAbandonment" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_BuildingsMember_019b46bd-045f-7621-ba7f-d0b5d9cecef9_terseLabel_en-US" xlink:label="lab_ifrs-full_BuildingsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Buildings</link:label>
    <link:label id="lab_ifrs-full_BuildingsMember_label_en-US" xlink:label="lab_ifrs-full_BuildingsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Buildings [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BuildingsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BuildingsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_BuildingsMember" xlink:to="lab_ifrs-full_BuildingsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfInflationMember_019b46bd-0684-780a-a7c5-b850c114f682_terseLabel_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfInflationMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inflation assumption</link:label>
    <link:label id="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfInflationMember_label_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfInflationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Actuarial assumption of expected rates of inflation [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ActuarialAssumptionOfExpectedRatesOfInflationMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ActuarialAssumptionOfExpectedRatesOfInflationMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ActuarialAssumptionOfExpectedRatesOfInflationMember" xlink:to="lab_ifrs-full_ActuarialAssumptionOfExpectedRatesOfInflationMember" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_CurrencyReceivedInHedgingTransaction_label_en-US" xlink:label="lab_ck0000932782_CurrencyReceivedInHedgingTransaction" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Currency received in hedging transaction</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CurrencyReceivedInHedgingTransaction" xlink:to="lab_ck0000932782_CurrencyReceivedInHedgingTransaction" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PetroleraCardenasMoraSAPIdeCVMember_019b46bd-053c-7baa-97de-08f5f19e1357_terseLabel_en-US" xlink:label="lab_ck0000932782_PetroleraCardenasMoraSAPIdeCVMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Petrolera Cardenas Mora, S. A. P. I. de C. V.</link:label>
    <link:label id="lab_ck0000932782_PetroleraCardenasMoraSAPIdeCVMember_label_en-US" xlink:label="lab_ck0000932782_PetroleraCardenasMoraSAPIdeCVMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Petrolera Cardenas Mora, S. A. P. I. de C. V. [member]</link:label>
    <link:label id="lab_ck0000932782_PetroleraCardenasMoraSAPIdeCVMember_documentation_en-US" xlink:label="lab_ck0000932782_PetroleraCardenasMoraSAPIdeCVMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Petrolera Crdenas Mora, S. A. P. I. de C. V.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PetroleraCardenasMoraSAPIdeCVMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PetroleraCardenasMoraSAPIdeCVMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PetroleraCardenasMoraSAPIdeCVMember" xlink:to="lab_ck0000932782_PetroleraCardenasMoraSAPIdeCVMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables_019b46bd-053c-7cc8-a696-6b744c65c739_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customers and accounts receivable</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments for decrease (increase) in trade and other receivables</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xlink:to="lab_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_LegalEntityAxis_019b46bd-0684-7b68-9587-be09531ee992_terseLabel_en-US" xlink:label="lab_dei_LegalEntityAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Legal Entity [Axis]</link:label>
    <link:label id="lab_dei_LegalEntityAxis_label_en-US" xlink:label="lab_dei_LegalEntityAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Legal Entity [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LegalEntityAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_LegalEntityAxis" xlink:to="lab_dei_LegalEntityAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfRollForwardRelatedToThePromissoryNotesTable_019b46bd-0684-791b-a577-6822ca15533b_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfRollForwardRelatedToThePromissoryNotesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of Roll Forward Related to the Promissory Notes [Table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfRollForwardRelatedToThePromissoryNotesTable_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfRollForwardRelatedToThePromissoryNotesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of Roll Forward Related to the Promissory Notes [Table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfRollForwardRelatedToThePromissoryNotesTable_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfRollForwardRelatedToThePromissoryNotesTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of Roll Forward Related to the Promissory Notes [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfRollForwardRelatedToThePromissoryNotesTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfRollForwardRelatedToThePromissoryNotesTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfRollForwardRelatedToThePromissoryNotesTable" xlink:to="lab_ck0000932782_DisclosureOfRollForwardRelatedToThePromissoryNotesTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DepreciationOfPropertiesPlantAndEquipment_019b46bd-053d-7be8-956b-6c8c6080a2c9_verboseLabel_en-US" xlink:label="lab_ck0000932782_DepreciationOfPropertiesPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Depreciation of wells, pipelines, properties, plant and equipment, depreciation and impairment of rights of use and amortization of intangible assets</link:label>
    <link:label id="lab_ck0000932782_DepreciationOfPropertiesPlantAndEquipment_label_en-US" xlink:label="lab_ck0000932782_DepreciationOfPropertiesPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation Of Properties Plant And Equipment</link:label>
    <link:label id="lab_ck0000932782_DepreciationOfPropertiesPlantAndEquipment_documentation_en-US" xlink:label="lab_ck0000932782_DepreciationOfPropertiesPlantAndEquipment" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Depreciation of properties plant and equipment.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DepreciationOfPropertiesPlantAndEquipment" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DepreciationOfPropertiesPlantAndEquipment"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DepreciationOfPropertiesPlantAndEquipment" xlink:to="lab_ck0000932782_DepreciationOfPropertiesPlantAndEquipment" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DerivativeFinancialAssets_019b46bd-0715-755d-bd1b-f2ff1248bdc5_verboseLabel_en-US" xlink:label="lab_ifrs-full_DerivativeFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total assets</link:label>
    <link:label id="lab_ifrs-full_DerivativeFinancialAssets_label_en-US" xlink:label="lab_ifrs-full_DerivativeFinancialAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative financial assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DerivativeFinancialAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DerivativeFinancialAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DerivativeFinancialAssets" xlink:to="lab_ifrs-full_DerivativeFinancialAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ActuarialAssumptionOfDiscountRatesMember_019b46bd-0715-7701-90d8-8b9ece6c22b7_terseLabel_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfDiscountRatesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Actuarial assumption of discount rates</link:label>
    <link:label id="lab_ifrs-full_ActuarialAssumptionOfDiscountRatesMember_019b46bd-0715-7f4a-bceb-c1bc39ace4b3_verboseLabel_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfDiscountRatesMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Discount and return on plan assets rate</link:label>
    <link:label id="lab_ifrs-full_ActuarialAssumptionOfDiscountRatesMember_019b46bd-0715-7d7d-a4b4-a1d6f89ae003_netLabel_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfDiscountRatesMember" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Discount and return on plan assets rate</link:label>
    <link:label id="lab_ifrs-full_ActuarialAssumptionOfDiscountRatesMember_label_en-US" xlink:label="lab_ifrs-full_ActuarialAssumptionOfDiscountRatesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Actuarial assumption of discount rates [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ActuarialAssumptionOfDiscountRatesMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ActuarialAssumptionOfDiscountRatesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ActuarialAssumptionOfDiscountRatesMember" xlink:to="lab_ifrs-full_ActuarialAssumptionOfDiscountRatesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_currency_JPY_019b46bd-053c-7319-87cb-fc19671e56fb_verboseLabel_en-US" xlink:label="lab_currency_JPY" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Japanese yen</link:label>
    <link:label id="lab_currency_JPY_019b46bd-053c-79bd-9d81-e8ab31063787_terseLabel_en-US" xlink:label="lab_currency_JPY" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Yen</link:label>
    <link:label id="lab_currency_JPY_label_en-US" xlink:label="lab_currency_JPY" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Japan, Yen</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_currency_JPY" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_JPY"/>
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    <link:label id="lab_ck0000932782_BurgosMember_019b46bd-0460-789a-a34f-1b71f83ae490_terseLabel_en-US" xlink:label="lab_ck0000932782_BurgosMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Burgos</link:label>
    <link:label id="lab_ck0000932782_BurgosMember_label_en-US" xlink:label="lab_ck0000932782_BurgosMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Burgos [Member]</link:label>
    <link:label id="lab_ck0000932782_BurgosMember_documentation_en-US" xlink:label="lab_ck0000932782_BurgosMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Burgos.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BurgosMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BurgosMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BurgosMember" xlink:to="lab_ck0000932782_BurgosMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset_019b46bd-0715-7e3e-8b0e-efe6fa5d366b_negatedLabel_en-US" xlink:label="lab_ifrs-full_ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Change in demographic assumptions</link:label>
    <link:label id="lab_ifrs-full_ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset_label_en-US" xlink:label="lab_ifrs-full_ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Decrease (increase) in net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in demographic assumptions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ActuarialGainsLossesArisingFromChangesInDemographicAssumptionsNetDefinedBenefitLiabilityAsset"/>
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    <link:label id="lab_ck0000932782_BlockEighteenOfTampicoMisantlaMember_019b46bd-05e4-7433-b22e-27e47f70f0e3_terseLabel_en-US" xlink:label="lab_ck0000932782_BlockEighteenOfTampicoMisantlaMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Block 18 of Tampico Misantla</link:label>
    <link:label id="lab_ck0000932782_BlockEighteenOfTampicoMisantlaMember_label_en-US" xlink:label="lab_ck0000932782_BlockEighteenOfTampicoMisantlaMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Block eighteen Of Tampico Misantla [member]</link:label>
    <link:label id="lab_ck0000932782_BlockEighteenOfTampicoMisantlaMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockEighteenOfTampicoMisantlaMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block eighteen Of Tampico Misantla.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockEighteenOfTampicoMisantlaMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockEighteenOfTampicoMisantlaMember"/>
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    <link:label id="lab_ifrs-full_GeographicalAreasAxis_019b46bd-05e4-716b-aa5b-9470be582e4c_terseLabel_en-US" xlink:label="lab_ifrs-full_GeographicalAreasAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Geographical areas [axis]</link:label>
    <link:label id="lab_ifrs-full_GeographicalAreasAxis_label_en-US" xlink:label="lab_ifrs-full_GeographicalAreasAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Geographical areas [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_GeographicalAreasAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_GeographicalAreasAxis"/>
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    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionThreeDecember2025Member_019ce6e7-f0bb-7d55-a3f2-ca5faf720b5c_terseLabel_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionThreeDecember2025Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Three, December 2025</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionThreeDecember2025Member_label_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionThreeDecember2025Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Three, December 2025 [Member]</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionThreeDecember2025Member_documentation_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionThreeDecember2025Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Three, December 2025</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StrengtheningOfFinancialPositionThreeDecember2025Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StrengtheningOfFinancialPositionThreeDecember2025Member"/>
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    <link:label id="lab_ifrs-full_NoncurrentLeaseLiabilities_019b46bd-0684-79d2-a8d2-dfa3f7408ff4_terseLabel_en-US" xlink:label="lab_ifrs-full_NoncurrentLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term leases, net of current portion</link:label>
    <link:label id="lab_ifrs-full_NoncurrentLeaseLiabilities_019b46bd-0684-7ed6-85c9-00df6abdfc24_verboseLabel_en-US" xlink:label="lab_ifrs-full_NoncurrentLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Non-current lease liabilities</link:label>
    <link:label id="lab_ifrs-full_NoncurrentLeaseLiabilities_label_en-US" xlink:label="lab_ifrs-full_NoncurrentLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-current lease liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLeaseLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentLeaseLiabilities"/>
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    <link:label id="lab_ck0000932782_DisclosureOfFairValueOfDerivativeInstrumentsExplanatory_019b46bd-045f-7ca2-9dce-81908cd594f9_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfFairValueOfDerivativeInstrumentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Details of Interest Rate Sensitivity</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfFairValueOfDerivativeInstrumentsExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfFairValueOfDerivativeInstrumentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of fair value of derivative instruments [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfFairValueOfDerivativeInstrumentsExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfFairValueOfDerivativeInstrumentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of fair value of derivative instruments.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfFairValueOfDerivativeInstrumentsExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfFairValueOfDerivativeInstrumentsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfFairValueOfDerivativeInstrumentsExplanatory" xlink:to="lab_ck0000932782_DisclosureOfFairValueOfDerivativeInstrumentsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ContributionsToPlanNetDefinedBenefitLiabilityAsset_019b46bd-05e4-7b62-8bd3-bbfad590fd44_terseLabel_en-US" xlink:label="lab_ifrs-full_ContributionsToPlanNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Company contributions to the fund</link:label>
    <link:label id="lab_ifrs-full_ContributionsToPlanNetDefinedBenefitLiabilityAsset_label_en-US" xlink:label="lab_ifrs-full_ContributionsToPlanNetDefinedBenefitLiabilityAsset" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Decrease (increase) in net defined benefit liability (asset) resulting from contributions to plan</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ContributionsToPlanNetDefinedBenefitLiabilityAsset" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ContributionsToPlanNetDefinedBenefitLiabilityAsset"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ContributionsToPlanNetDefinedBenefitLiabilityAsset" xlink:to="lab_ifrs-full_ContributionsToPlanNetDefinedBenefitLiabilityAsset" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory_019b46bd-053c-7054-b2b2-8a5f5f756367_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of revenue from contracts with customers [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" xlink:to="lab_ifrs-full_DisclosureOfRevenueFromContractsWithCustomersExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfProvisionForPluggingOfWellsTable_019b46bd-0684-7624-a227-b79891176f9b_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfProvisionForPluggingOfWellsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure Of Provision For Plugging Of Wells [Table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfProvisionForPluggingOfWellsTable_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfProvisionForPluggingOfWellsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Provision For Plugging Of Wells [Table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfProvisionForPluggingOfWellsTable_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfProvisionForPluggingOfWellsTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Provision For Plugging Of Wells [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfProvisionForPluggingOfWellsTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfProvisionForPluggingOfWellsTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfProvisionForPluggingOfWellsTable" xlink:to="lab_ck0000932782_DisclosureOfProvisionForPluggingOfWellsTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ActuarialAssumptionOfGasAndGasolineRatesMember_019b46bd-0684-79f0-83c7-66de644d6e49_terseLabel_en-US" xlink:label="lab_ck0000932782_ActuarialAssumptionOfGasAndGasolineRatesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rate of increase in gas and gasoline</link:label>
    <link:label id="lab_ck0000932782_ActuarialAssumptionOfGasAndGasolineRatesMember_label_en-US" xlink:label="lab_ck0000932782_ActuarialAssumptionOfGasAndGasolineRatesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Actuarial assumption of gas and gasoline rates [member]</link:label>
    <link:label id="lab_ck0000932782_ActuarialAssumptionOfGasAndGasolineRatesMember_documentation_en-US" xlink:label="lab_ck0000932782_ActuarialAssumptionOfGasAndGasolineRatesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Actuarial assumption of gas and gasoline rates.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ActuarialAssumptionOfGasAndGasolineRatesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ActuarialAssumptionOfGasAndGasolineRatesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ActuarialAssumptionOfGasAndGasolineRatesMember" xlink:to="lab_ck0000932782_ActuarialAssumptionOfGasAndGasolineRatesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ReceiveEurosPayUsDollarsMember_019b46bd-05e4-7ef0-85a8-634ea1156faa_terseLabel_en-US" xlink:label="lab_ck0000932782_ReceiveEurosPayUsDollarsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Receive euros/Pay U.S. dollars</link:label>
    <link:label id="lab_ck0000932782_ReceiveEurosPayUsDollarsMember_label_en-US" xlink:label="lab_ck0000932782_ReceiveEurosPayUsDollarsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Receive euros pay us dollars [member]</link:label>
    <link:label id="lab_ck0000932782_ReceiveEurosPayUsDollarsMember_documentation_en-US" xlink:label="lab_ck0000932782_ReceiveEurosPayUsDollarsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Receive euros pay us dollars [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ReceiveEurosPayUsDollarsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ReceiveEurosPayUsDollarsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ReceiveEurosPayUsDollarsMember" xlink:to="lab_ck0000932782_ReceiveEurosPayUsDollarsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill_019b46bd-053d-73e9-bbd1-0c0148e2cd6d_verboseLabel_en-US" xlink:label="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Intangible assets, net</link:label>
    <link:label id="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill_019b46bd-053d-7403-a96a-3c4dd662ee57_terseLabel_en-US" xlink:label="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible assets</link:label>
    <link:label id="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill_019b46bd-053d-7208-b46e-5e29726bda48_periodStartLabel_en-US" xlink:label="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance at the beginning of the year</link:label>
    <link:label id="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill_019b46bd-053d-7fdd-ad3a-4d50182f0db4_periodEndLabel_en-US" xlink:label="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance at the end of the year</link:label>
    <link:label id="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill_label_en-US" xlink:label="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Intangible assets other than goodwill</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IntangibleAssetsOtherThanGoodwill"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:to="lab_ifrs-full_IntangibleAssetsOtherThanGoodwill" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EmployeeBenefitsProvisionsForSundryCreditorsOtherLiabilitiesAndDeferredTaxes_019b46bd-0715-7dd6-a474-f4bf1ff1cb28_terseLabel_en-US" xlink:label="lab_ck0000932782_EmployeeBenefitsProvisionsForSundryCreditorsOtherLiabilitiesAndDeferredTaxes" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employee benefits, provisions for sundry creditors, other liabilities and deferred taxes</link:label>
    <link:label id="lab_ck0000932782_EmployeeBenefitsProvisionsForSundryCreditorsOtherLiabilitiesAndDeferredTaxes_label_en-US" xlink:label="lab_ck0000932782_EmployeeBenefitsProvisionsForSundryCreditorsOtherLiabilitiesAndDeferredTaxes" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Benefits Provisions for Sundry Creditors Other Liabilities and Deferred Taxes</link:label>
    <link:label id="lab_ck0000932782_EmployeeBenefitsProvisionsForSundryCreditorsOtherLiabilitiesAndDeferredTaxes_documentation_en-US" xlink:label="lab_ck0000932782_EmployeeBenefitsProvisionsForSundryCreditorsOtherLiabilitiesAndDeferredTaxes" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Employee benefits, provisions for sundry creditors, other liabilities and deferred taxes.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EmployeeBenefitsProvisionsForSundryCreditorsOtherLiabilitiesAndDeferredTaxes" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EmployeeBenefitsProvisionsForSundryCreditorsOtherLiabilitiesAndDeferredTaxes"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EmployeeBenefitsProvisionsForSundryCreditorsOtherLiabilitiesAndDeferredTaxes" xlink:to="lab_ck0000932782_EmployeeBenefitsProvisionsForSundryCreditorsOtherLiabilitiesAndDeferredTaxes" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FonadinMember_019b46bd-05e4-7a4e-bf55-13aed5066e44_terseLabel_en-US" xlink:label="lab_ck0000932782_FonadinMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">FONADIN</link:label>
    <link:label id="lab_ck0000932782_FonadinMember_label_en-US" xlink:label="lab_ck0000932782_FonadinMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">FONADIN [Member]</link:label>
    <link:label id="lab_ck0000932782_FonadinMember_documentation_en-US" xlink:label="lab_ck0000932782_FonadinMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">FONADIN</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FonadinMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FonadinMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FonadinMember" xlink:to="lab_ck0000932782_FonadinMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_GasArenqueProcessorComplexMember_019bba47-8588-7717-b602-94bd2763b64a_terseLabel_en-US" xlink:label="lab_ck0000932782_GasArenqueProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Matapionche Gas Processor Complex</link:label>
    <link:label id="lab_ck0000932782_GasArenqueProcessorComplexMember_label_en-US" xlink:label="lab_ck0000932782_GasArenqueProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gas Arenque Processor Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_GasArenqueProcessorComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_GasArenqueProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gas Arenque Processor Complex</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GasArenqueProcessorComplexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GasArenqueProcessorComplexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_GasArenqueProcessorComplexMember" xlink:to="lab_ck0000932782_GasArenqueProcessorComplexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusAxis_019b46bd-053c-74d8-8aa5-25d4c9839765_terseLabel_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, plant and equipment by operating lease status [axis]</link:label>
    <link:label id="lab_ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusAxis_label_en-US" xlink:label="lab_ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, plant and equipment by operating lease status [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusAxis" xlink:to="lab_ifrs-full_PropertyPlantAndEquipmentByOperatingLeaseStatusAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ShorttermRestructuringProvision_019ce6ed-bfbe-7a8a-b281-8b13a30ab6d9_terseLabel_en-US" xlink:label="lab_ifrs-full_ShorttermRestructuringProvision" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current restructuring provision</link:label>
    <link:label id="lab_ifrs-full_ShorttermRestructuringProvision_label_en-US" xlink:label="lab_ifrs-full_ShorttermRestructuringProvision" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current restructuring provision</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShorttermRestructuringProvision" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ShorttermRestructuringProvision"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ShorttermRestructuringProvision" xlink:to="lab_ifrs-full_ShorttermRestructuringProvision" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_SegmentsDomain_019b46bd-053c-7f97-ba84-6603b1b82023_terseLabel_en-US" xlink:label="lab_ifrs-full_SegmentsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">By segment</link:label>
    <link:label id="lab_ifrs-full_SegmentsDomain_label_en-US" xlink:label="lab_ifrs-full_SegmentsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segments [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentsDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_SegmentsDomain" xlink:to="lab_ifrs-full_SegmentsDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashAndCashEquivalents_019b46bd-053c-75b2-b3ce-544bae85676e_terseLabel_en-US" xlink:label="lab_ifrs-full_CashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:label id="lab_ifrs-full_CashAndCashEquivalents_019b46bd-053c-7cab-b2af-1d21b7ffb302_periodStartLabel_en-US" xlink:label="lab_ifrs-full_CashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents at the beginning of the year</link:label>
    <link:label id="lab_ifrs-full_CashAndCashEquivalents_019b46bd-053c-7c34-934a-81e86ec4d1c9_periodEndLabel_en-US" xlink:label="lab_ifrs-full_CashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents at the end of the year (Note 9)</link:label>
    <link:label id="lab_ifrs-full_CashAndCashEquivalents_019b46bd-053c-792d-b6d7-f519c8482293_totalLabel_en-US" xlink:label="lab_ifrs-full_CashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total of cash and cash equivalents</link:label>
    <link:label id="lab_ifrs-full_CashAndCashEquivalents_label_en-US" xlink:label="lab_ifrs-full_CashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashAndCashEquivalents" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashAndCashEquivalents"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CashAndCashEquivalents" xlink:to="lab_ifrs-full_CashAndCashEquivalents" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_GasPozaRicaProcessorComplexMember_019bba47-8588-7a37-b979-fdb378865a30_terseLabel_en-US" xlink:label="lab_ck0000932782_GasPozaRicaProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gas Poza Rica Processor Complex</link:label>
    <link:label id="lab_ck0000932782_GasPozaRicaProcessorComplexMember_label_en-US" xlink:label="lab_ck0000932782_GasPozaRicaProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gas Poza Rica Processor Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_GasPozaRicaProcessorComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_GasPozaRicaProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gas Poza Rica Processor Complex</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GasPozaRicaProcessorComplexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GasPozaRicaProcessorComplexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_GasPozaRicaProcessorComplexMember" xlink:to="lab_ck0000932782_GasPozaRicaProcessorComplexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_Fees_019b46bd-05e4-75a8-8eb0-3545a639d0b9_terseLabel_en-US" xlink:label="lab_ck0000932782_Fees" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fees</link:label>
    <link:label id="lab_ck0000932782_Fees_label_en-US" xlink:label="lab_ck0000932782_Fees" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fees</link:label>
    <link:label id="lab_ck0000932782_Fees_documentation_en-US" xlink:label="lab_ck0000932782_Fees" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fees</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_Fees" xlink:href="ck0000932782-20251231.xsd#ck0000932782_Fees"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_Fees" xlink:to="lab_ck0000932782_Fees" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PaymentsToSupplierForGoodsAndServices_019b46bd-0684-7144-9247-8d56e0a04b69_terseLabel_en-US" xlink:label="lab_ck0000932782_PaymentsToSupplierForGoodsAndServices" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Suppliers</link:label>
    <link:label id="lab_ck0000932782_PaymentsToSupplierForGoodsAndServices_label_en-US" xlink:label="lab_ck0000932782_PaymentsToSupplierForGoodsAndServices" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments To Supplier For Goods And Services</link:label>
    <link:label id="lab_ck0000932782_PaymentsToSupplierForGoodsAndServices_documentation_en-US" xlink:label="lab_ck0000932782_PaymentsToSupplierForGoodsAndServices" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The cash outflow to supplier for goods and services.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PaymentsToSupplierForGoodsAndServices" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PaymentsToSupplierForGoodsAndServices"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PaymentsToSupplierForGoodsAndServices" xlink:to="lab_ck0000932782_PaymentsToSupplierForGoodsAndServices" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_DocumentInformationTable_019b46bd-045f-7758-95eb-333f835223a2_terseLabel_en-US" xlink:label="lab_dei_DocumentInformationTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Information [Table]</link:label>
    <link:label id="lab_dei_DocumentInformationTable_label_en-US" xlink:label="lab_dei_DocumentInformationTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Information [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentInformationTable" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentInformationTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentInformationTable" xlink:to="lab_dei_DocumentInformationTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_019b46bd-0684-70a4-8f8a-5daf0bebdafd_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of non-adjusting events after reporting period [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of non-adjusting events after reporting period [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems" xlink:to="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NaturalGasMember_019b46bd-0684-72f7-aec4-a4ecd75252dc_verboseLabel_en-US" xlink:label="lab_ck0000932782_NaturalGasMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Natural Gas</link:label>
    <link:label id="lab_ck0000932782_NaturalGasMember_019b46bd-0684-79f0-9bb6-e56879a02da9_terseLabel_en-US" xlink:label="lab_ck0000932782_NaturalGasMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Natural gas, per thousand cubic feet</link:label>
    <link:label id="lab_ck0000932782_NaturalGasMember_label_en-US" xlink:label="lab_ck0000932782_NaturalGasMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Natural Gas [member]</link:label>
    <link:label id="lab_ck0000932782_NaturalGasMember_documentation_en-US" xlink:label="lab_ck0000932782_NaturalGasMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Natural gas.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NaturalGasMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NaturalGasMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NaturalGasMember" xlink:to="lab_ck0000932782_NaturalGasMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProfitSharingDutyTaxCreditAmount_019b46bd-0715-730c-84b9-b1a8db2f7493_negatedLabel_en-US" xlink:label="lab_ck0000932782_ProfitSharingDutyTaxCreditAmount" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">DUC tax credit</link:label>
    <link:label id="lab_ck0000932782_ProfitSharingDutyTaxCreditAmount_label_en-US" xlink:label="lab_ck0000932782_ProfitSharingDutyTaxCreditAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit Sharing Duty Tax Credit Amount</link:label>
    <link:label id="lab_ck0000932782_ProfitSharingDutyTaxCreditAmount_documentation_en-US" xlink:label="lab_ck0000932782_ProfitSharingDutyTaxCreditAmount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Profit Sharing Duty Tax Credit Amount.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProfitSharingDutyTaxCreditAmount" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProfitSharingDutyTaxCreditAmount"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProfitSharingDutyTaxCreditAmount" xlink:to="lab_ck0000932782_ProfitSharingDutyTaxCreditAmount" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyLineItems_019b46bd-053c-7cc2-9576-b38204bd7634_terseLabel_en-US" xlink:label="lab_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Monetary assets and liabilities denominated in foreign currency [line items]</link:label>
    <link:label id="lab_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyLineItems_label_en-US" xlink:label="lab_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Monetary assets and liabilities denominated in foreign currency [line items]</link:label>
    <link:label id="lab_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyLineItems_documentation_en-US" xlink:label="lab_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Monetary assets and liabilities denominated in foreign currency.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyLineItems" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyLineItems" xlink:to="lab_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TamaulipasConstitucionesMember_019b46bd-0715-7a07-91e7-695c142fb2d4_terseLabel_en-US" xlink:label="lab_ck0000932782_TamaulipasConstitucionesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tamaulipas Constituciones</link:label>
    <link:label id="lab_ck0000932782_TamaulipasConstitucionesMember_label_en-US" xlink:label="lab_ck0000932782_TamaulipasConstitucionesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tamaulipas Constituciones [Member]</link:label>
    <link:label id="lab_ck0000932782_TamaulipasConstitucionesMember_documentation_en-US" xlink:label="lab_ck0000932782_TamaulipasConstitucionesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tamaulipas Constituciones.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TamaulipasConstitucionesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TamaulipasConstitucionesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TamaulipasConstitucionesMember" xlink:to="lab_ck0000932782_TamaulipasConstitucionesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LaterThanFiveYearsAndThereafterMember_019b46bd-0715-7c86-ad79-4faea4c679b0_terseLabel_en-US" xlink:label="lab_ck0000932782_LaterThanFiveYearsAndThereafterMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2031 and thereafter</link:label>
    <link:label id="lab_ck0000932782_LaterThanFiveYearsAndThereafterMember_label_en-US" xlink:label="lab_ck0000932782_LaterThanFiveYearsAndThereafterMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Later than five years and thereafter [Member]</link:label>
    <link:label id="lab_ck0000932782_LaterThanFiveYearsAndThereafterMember_documentation_en-US" xlink:label="lab_ck0000932782_LaterThanFiveYearsAndThereafterMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Later than five years and thereafter</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LaterThanFiveYearsAndThereafterMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LaterThanFiveYearsAndThereafterMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LaterThanFiveYearsAndThereafterMember" xlink:to="lab_ck0000932782_LaterThanFiveYearsAndThereafterMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsExplanatory_019b46bd-05e4-70e1-b129-a3ba7044a8db_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Long-term Debt</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about borrowings [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfEntitysOwnEquityInstrumentsDomain_019b46bd-053c-7a6d-8fe3-248d5bdf84cc_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfEntitysOwnEquityInstrumentsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Classes of entity's own equity instruments</link:label>
    <link:label id="lab_ifrs-full_ClassesOfEntitysOwnEquityInstrumentsDomain_label_en-US" xlink:label="lab_ifrs-full_ClassesOfEntitysOwnEquityInstrumentsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of entity's own equity instruments [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfEntitysOwnEquityInstrumentsDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfEntitysOwnEquityInstrumentsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfEntitysOwnEquityInstrumentsDomain" xlink:to="lab_ifrs-full_ClassesOfEntitysOwnEquityInstrumentsDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_BusinessCombinationsAxis_019b46bd-05e4-75a2-b7e1-55d777b04eb6_terseLabel_en-US" xlink:label="lab_ifrs-full_BusinessCombinationsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business combinations [axis]</link:label>
    <link:label id="lab_ifrs-full_BusinessCombinationsAxis_label_en-US" xlink:label="lab_ifrs-full_BusinessCombinationsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business combinations [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BusinessCombinationsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BusinessCombinationsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_BusinessCombinationsAxis" xlink:to="lab_ifrs-full_BusinessCombinationsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_Provisions_019b46bd-0684-7329-aff3-c2e783b57329_terseLabel_en-US" xlink:label="lab_ifrs-full_Provisions" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provisions for sundry creditors</link:label>
    <link:label id="lab_ifrs-full_Provisions_019b46bd-0684-7281-8bae-71f33212d307_totalLabel_en-US" xlink:label="lab_ifrs-full_Provisions" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Provisions</link:label>
    <link:label id="lab_ifrs-full_Provisions_label_en-US" xlink:label="lab_ifrs-full_Provisions" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provisions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Provisions" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Provisions"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_Provisions" xlink:to="lab_ifrs-full_Provisions" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DescriptionOfAccountingPolicyForInventoriesAndCostOfSalesExplanatory_019b46bd-0684-7af8-8dca-13f5c2605c15_terseLabel_en-US" xlink:label="lab_ck0000932782_DescriptionOfAccountingPolicyForInventoriesAndCostOfSalesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventories and cost of sales</link:label>
    <link:label id="lab_ck0000932782_DescriptionOfAccountingPolicyForInventoriesAndCostOfSalesExplanatory_label_en-US" xlink:label="lab_ck0000932782_DescriptionOfAccountingPolicyForInventoriesAndCostOfSalesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Description Of Accounting Policy For Inventories And Cost Of Sales [text block]</link:label>
    <link:label id="lab_ck0000932782_DescriptionOfAccountingPolicyForInventoriesAndCostOfSalesExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DescriptionOfAccountingPolicyForInventoriesAndCostOfSalesExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Description of accounting policy for inventories and cost of sales.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DescriptionOfAccountingPolicyForInventoriesAndCostOfSalesExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DescriptionOfAccountingPolicyForInventoriesAndCostOfSalesExplanatory"/>
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    <link:label id="lab_ifrs-full_TaxContingentLiabilityMember_019b46bd-0684-7ff0-ab1e-f330cae75df9_terseLabel_en-US" xlink:label="lab_ifrs-full_TaxContingentLiabilityMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tax Contingent Liability</link:label>
    <link:label id="lab_ifrs-full_TaxContingentLiabilityMember_label_en-US" xlink:label="lab_ifrs-full_TaxContingentLiabilityMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tax contingent liability [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TaxContingentLiabilityMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TaxContingentLiabilityMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TaxContingentLiabilityMember" xlink:to="lab_ifrs-full_TaxContingentLiabilityMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EstimatedFutureContractPayments_019b46bd-0684-7df8-98de-e19beeefb0ee_totalLabel_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPayments" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ck0000932782_EstimatedFutureContractPayments_label_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPayments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Estimated future contract payments</link:label>
    <link:label id="lab_ck0000932782_EstimatedFutureContractPayments_documentation_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPayments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Estimated future contract payments.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EstimatedFutureContractPayments" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EstimatedFutureContractPayments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EstimatedFutureContractPayments" xlink:to="lab_ck0000932782_EstimatedFutureContractPayments" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_WeightedAverageTermOfDerivativeInstrument_019b46bd-05e4-758b-9b6d-eb6f7baa94c7_terseLabel_en-US" xlink:label="lab_ck0000932782_WeightedAverageTermOfDerivativeInstrument" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average term of derivative instrument</link:label>
    <link:label id="lab_ck0000932782_WeightedAverageTermOfDerivativeInstrument_label_en-US" xlink:label="lab_ck0000932782_WeightedAverageTermOfDerivativeInstrument" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Average Term Of Derivative Instrument</link:label>
    <link:label id="lab_ck0000932782_WeightedAverageTermOfDerivativeInstrument_documentation_en-US" xlink:label="lab_ck0000932782_WeightedAverageTermOfDerivativeInstrument" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Weighted average term of derivative instrument.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_WeightedAverageTermOfDerivativeInstrument" xlink:href="ck0000932782-20251231.xsd#ck0000932782_WeightedAverageTermOfDerivativeInstrument"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_WeightedAverageTermOfDerivativeInstrument" xlink:to="lab_ck0000932782_WeightedAverageTermOfDerivativeInstrument" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IxtalManikMember_019b46bd-05e5-78d0-964d-52736ddc8780_terseLabel_en-US" xlink:label="lab_ck0000932782_IxtalManikMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ixtal - Manik</link:label>
    <link:label id="lab_ck0000932782_IxtalManikMember_label_en-US" xlink:label="lab_ck0000932782_IxtalManikMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ixtal Manik [Member]</link:label>
    <link:label id="lab_ck0000932782_IxtalManikMember_documentation_en-US" xlink:label="lab_ck0000932782_IxtalManikMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ixtal Manik.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IxtalManikMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IxtalManikMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IxtalManikMember" xlink:to="lab_ck0000932782_IxtalManikMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyTable_019b46bd-0715-7e9d-94c5-4b2c33cd06fc_terseLabel_en-US" xlink:label="lab_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Monetary assets and liabilities denominated in foreign currency [table]</link:label>
    <link:label id="lab_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyTable_label_en-US" xlink:label="lab_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Monetary assets and liabilities denominated in foreign currency [table]</link:label>
    <link:label id="lab_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyTable_documentation_en-US" xlink:label="lab_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Monetary assets and liabilities denominated in foreign currency .</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyTable" xlink:to="lab_ck0000932782_MonetaryAssetsAndLiabilitiesDenominatedInForeignCurrencyTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_A4th.GroupMember_019d60c7-4e23-73fa-91c1-a7c2fee3d1c6_terseLabel_en-US" xlink:label="lab_ck0000932782_A4th.GroupMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">4th. Group</link:label>
    <link:label id="lab_ck0000932782_A4th.GroupMember_label_en-US" xlink:label="lab_ck0000932782_A4th.GroupMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">4th. Group [Member]</link:label>
    <link:label id="lab_ck0000932782_A4th.GroupMember_documentation_en-US" xlink:label="lab_ck0000932782_A4th.GroupMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">4th. Group</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_A4th.GroupMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_A4th.GroupMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_A4th.GroupMember" xlink:to="lab_ck0000932782_A4th.GroupMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ExpectedCreditLosses_019b46bd-053d-7252-906c-bea4e55b7a20_terseLabel_en-US" xlink:label="lab_ck0000932782_ExpectedCreditLosses" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expected credit losses</link:label>
    <link:label id="lab_ck0000932782_ExpectedCreditLosses_label_en-US" xlink:label="lab_ck0000932782_ExpectedCreditLosses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expected Credit Losses</link:label>
    <link:label id="lab_ck0000932782_ExpectedCreditLosses_documentation_en-US" xlink:label="lab_ck0000932782_ExpectedCreditLosses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Expected credit losses.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ExpectedCreditLosses" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ExpectedCreditLosses"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ExpectedCreditLosses" xlink:to="lab_ck0000932782_ExpectedCreditLosses" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_ProductsAndServicesDomain_019b46bd-05e4-76fa-bbb2-81f71ff766ca_terseLabel_en-US" xlink:label="lab_srt_ProductsAndServicesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Product and Service [Domain]</link:label>
    <link:label id="lab_srt_ProductsAndServicesDomain_label_en-US" xlink:label="lab_srt_ProductsAndServicesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product and Service [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ProductsAndServicesDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ProductsAndServicesDomain" xlink:to="lab_srt_ProductsAndServicesDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RawMaterialsAndConsumablesUsed_019b46bd-0684-71e0-ad2d-c665505bcb25_terseLabel_en-US" xlink:label="lab_ifrs-full_RawMaterialsAndConsumablesUsed" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Raw materials and spare parts</link:label>
    <link:label id="lab_ifrs-full_RawMaterialsAndConsumablesUsed_label_en-US" xlink:label="lab_ifrs-full_RawMaterialsAndConsumablesUsed" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Raw materials and consumables used</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RawMaterialsAndConsumablesUsed" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RawMaterialsAndConsumablesUsed"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RawMaterialsAndConsumablesUsed" xlink:to="lab_ifrs-full_RawMaterialsAndConsumablesUsed" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ReversalOfImpairmentImpairmentNet_019b46bd-05e4-7a02-a283-48220a763b7a_terseLabel_en-US" xlink:label="lab_ck0000932782_ReversalOfImpairmentImpairmentNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ck0000932782_ReversalOfImpairmentImpairmentNet_019b46bd-05e4-7c18-8f42-15a056d8bc02_verboseLabel_en-US" xlink:label="lab_ck0000932782_ReversalOfImpairmentImpairmentNet" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Impairment, net</link:label>
    <link:label id="lab_ck0000932782_ReversalOfImpairmentImpairmentNet_label_en-US" xlink:label="lab_ck0000932782_ReversalOfImpairmentImpairmentNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reversal of Impairment (Impairment), Net</link:label>
    <link:label id="lab_ck0000932782_ReversalOfImpairmentImpairmentNet_documentation_en-US" xlink:label="lab_ck0000932782_ReversalOfImpairmentImpairmentNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Reversal of impairment (Impairment), net.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ReversalOfImpairmentImpairmentNet" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ReversalOfImpairmentImpairmentNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ReversalOfImpairmentImpairmentNet" xlink:to="lab_ck0000932782_ReversalOfImpairmentImpairmentNet" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfExpectedBenefitForDucExplanatory_019b46bd-053c-7027-882f-771b332525ce_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfExpectedBenefitForDucExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Expected Benefit for DUC</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfExpectedBenefitForDucExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfExpectedBenefitForDucExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of Expected Benefit for DUC [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfExpectedBenefitForDucExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfExpectedBenefitForDucExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The disclosure of expected benefit for DUC.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfExpectedBenefitForDucExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfExpectedBenefitForDucExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfExpectedBenefitForDucExplanatory" xlink:to="lab_ck0000932782_DisclosureOfExpectedBenefitForDucExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ComesaMember_019b46bd-0715-7847-90fe-367a10d7ad9e_terseLabel_en-US" xlink:label="lab_ck0000932782_ComesaMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">COMESA</link:label>
    <link:label id="lab_ck0000932782_ComesaMember_label_en-US" xlink:label="lab_ck0000932782_ComesaMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">COMESA [Member]</link:label>
    <link:label id="lab_ck0000932782_ComesaMember_documentation_en-US" xlink:label="lab_ck0000932782_ComesaMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">COMESA [Member].</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ComesaMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ComesaMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ComesaMember" xlink:to="lab_ck0000932782_ComesaMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsExplanatory_019b46bd-0684-7b09-900e-d6bf93c461be_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Fair Values and Notional Amounts of DFIs that were designated as non-hedges</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about hedging instruments [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CrossCurrencySwapsPositionThreeMember_019b46bd-0715-7e0d-842f-c04ac4c77705_terseLabel_en-US" xlink:label="lab_ck0000932782_CrossCurrencySwapsPositionThreeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Petr&#243;leos Mexicanos pays fixed in U.S. dollar and receives fixed in euro.</link:label>
    <link:label id="lab_ck0000932782_CrossCurrencySwapsPositionThreeMember_label_en-US" xlink:label="lab_ck0000932782_CrossCurrencySwapsPositionThreeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cross Currency Swaps Position Three [member]</link:label>
    <link:label id="lab_ck0000932782_CrossCurrencySwapsPositionThreeMember_documentation_en-US" xlink:label="lab_ck0000932782_CrossCurrencySwapsPositionThreeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cross currency swaps position three.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CrossCurrencySwapsPositionThreeMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CrossCurrencySwapsPositionThreeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CrossCurrencySwapsPositionThreeMember" xlink:to="lab_ck0000932782_CrossCurrencySwapsPositionThreeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InterestRateRiskMember_019b46bd-0684-7868-92ca-46e4cb251fdc_terseLabel_en-US" xlink:label="lab_ifrs-full_InterestRateRiskMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest rate risk</link:label>
    <link:label id="lab_ifrs-full_InterestRateRiskMember_label_en-US" xlink:label="lab_ifrs-full_InterestRateRiskMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest rate risk [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestRateRiskMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestRateRiskMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InterestRateRiskMember" xlink:to="lab_ifrs-full_InterestRateRiskMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DfiNotionalAmount_019b46bd-053c-7ba6-96c4-0fee7c8a10bf_terseLabel_en-US" xlink:label="lab_ck0000932782_DfiNotionalAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">DFI Notional Amount</link:label>
    <link:label id="lab_ck0000932782_DfiNotionalAmount_label_en-US" xlink:label="lab_ck0000932782_DfiNotionalAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">DFI Notional Amount</link:label>
    <link:label id="lab_ck0000932782_DfiNotionalAmount_documentation_en-US" xlink:label="lab_ck0000932782_DfiNotionalAmount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">DFI notional amount.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DfiNotionalAmount" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DfiNotionalAmount"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DfiNotionalAmount" xlink:to="lab_ck0000932782_DfiNotionalAmount" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_RefinedPetroleumProductsAndDerivativesMember_019b46bd-053c-7534-848a-9758070ca972_terseLabel_en-US" xlink:label="lab_ck0000932782_RefinedPetroleumProductsAndDerivativesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Refined petroleum products and derivatives (primarily gasolines)</link:label>
    <link:label id="lab_ck0000932782_RefinedPetroleumProductsAndDerivativesMember_label_en-US" xlink:label="lab_ck0000932782_RefinedPetroleumProductsAndDerivativesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Refined Petroleum Products and Derivatives [member]</link:label>
    <link:label id="lab_ck0000932782_RefinedPetroleumProductsAndDerivativesMember_documentation_en-US" xlink:label="lab_ck0000932782_RefinedPetroleumProductsAndDerivativesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Refined petroleum products and derivatives.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RefinedPetroleumProductsAndDerivativesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RefinedPetroleumProductsAndDerivativesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_RefinedPetroleumProductsAndDerivativesMember" xlink:to="lab_ck0000932782_RefinedPetroleumProductsAndDerivativesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProvisionsForPluggingOfWells_019b46bd-045f-7929-9c1b-98c4d90bf86c_terseLabel_en-US" xlink:label="lab_ck0000932782_ProvisionsForPluggingOfWells" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provision for plugging of wells (Note 12)</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForPluggingOfWells_019b46bd-045f-7a20-8e93-5beedf3ce11d_periodStartLabel_en-US" xlink:label="lab_ck0000932782_ProvisionsForPluggingOfWells" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance at the beginning of the year</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForPluggingOfWells_019b46bd-045f-7539-a4e0-ae395740ad8b_periodEndLabel_en-US" xlink:label="lab_ck0000932782_ProvisionsForPluggingOfWells" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance at the end of the year</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForPluggingOfWells_019b46bd-045f-7a7c-9cd4-b973b19ac74c_verboseLabel_en-US" xlink:label="lab_ck0000932782_ProvisionsForPluggingOfWells" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Provisions for plugging of wells</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForPluggingOfWells_label_en-US" xlink:label="lab_ck0000932782_ProvisionsForPluggingOfWells" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provisions For Plugging Of Wells</link:label>
    <link:label id="lab_ck0000932782_ProvisionsForPluggingOfWells_documentation_en-US" xlink:label="lab_ck0000932782_ProvisionsForPluggingOfWells" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Provisions for plugging of wells.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProvisionsForPluggingOfWells" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProvisionsForPluggingOfWells"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProvisionsForPluggingOfWells" xlink:to="lab_ck0000932782_ProvisionsForPluggingOfWells" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources_019b46bd-053c-79f9-b076-4750f09db1a8_verboseLabel_en-US" xlink:label="lab_ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total costs incurred</link:label>
    <link:label id="lab_ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources_label_en-US" xlink:label="lab_ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expense arising from exploration for and evaluation of mineral resources</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources" xlink:to="lab_ifrs-full_ExpenseArisingFromExplorationForAndEvaluationOfMineralResources" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TwentyTwoCuencaSalinaMember_019b46bd-05e4-7369-829d-2f1b0b28faec_terseLabel_en-US" xlink:label="lab_ck0000932782_TwentyTwoCuencaSalinaMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Twenty Two Cuenca Salina</link:label>
    <link:label id="lab_ck0000932782_TwentyTwoCuencaSalinaMember_label_en-US" xlink:label="lab_ck0000932782_TwentyTwoCuencaSalinaMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Twenty two Cuenca Salina [member]</link:label>
    <link:label id="lab_ck0000932782_TwentyTwoCuencaSalinaMember_documentation_en-US" xlink:label="lab_ck0000932782_TwentyTwoCuencaSalinaMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Twenty two cuenca salina.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TwentyTwoCuencaSalinaMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TwentyTwoCuencaSalinaMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TwentyTwoCuencaSalinaMember" xlink:to="lab_ck0000932782_TwentyTwoCuencaSalinaMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IncomeTaxPayablesForNonproducingAreas_019b46bd-0684-70b2-86c7-1306de7a865b_terseLabel_en-US" xlink:label="lab_ck0000932782_IncomeTaxPayablesForNonproducingAreas" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tax payable for non-producing areas</link:label>
    <link:label id="lab_ck0000932782_IncomeTaxPayablesForNonproducingAreas_label_en-US" xlink:label="lab_ck0000932782_IncomeTaxPayablesForNonproducingAreas" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Payables For Non-Producing Areas</link:label>
    <link:label id="lab_ck0000932782_IncomeTaxPayablesForNonproducingAreas_documentation_en-US" xlink:label="lab_ck0000932782_IncomeTaxPayablesForNonproducingAreas" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Income tax payables for non-producing areas.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncomeTaxPayablesForNonproducingAreas" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncomeTaxPayablesForNonproducingAreas"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IncomeTaxPayablesForNonproducingAreas" xlink:to="lab_ck0000932782_IncomeTaxPayablesForNonproducingAreas" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BlockEightCuencaDelSuresteMember_019b46bd-053c-7ea0-9a3c-dcd03dde8c63_terseLabel_en-US" xlink:label="lab_ck0000932782_BlockEightCuencaDelSuresteMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Block 8 Cuenca del Sureste</link:label>
    <link:label id="lab_ck0000932782_BlockEightCuencaDelSuresteMember_label_en-US" xlink:label="lab_ck0000932782_BlockEightCuencaDelSuresteMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Block Eight Cuenca del Sureste [Member]</link:label>
    <link:label id="lab_ck0000932782_BlockEightCuencaDelSuresteMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockEightCuencaDelSuresteMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block Eight Cuenca del Sureste</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockEightCuencaDelSuresteMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockEightCuencaDelSuresteMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BlockEightCuencaDelSuresteMember" xlink:to="lab_ck0000932782_BlockEightCuencaDelSuresteMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LaterThanFiveYearsMember_019d9a7a-a8e1-7980-99f3-71a39ab4df5f_netLabel_en-US" xlink:label="lab_ifrs-full_LaterThanFiveYearsMember" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">2031 and thereafter</link:label>
    <link:label id="lab_ifrs-full_LaterThanFiveYearsMember_019b46bd-0715-7c4c-a800-c55f177ffa3b_terseLabel_en-US" xlink:label="lab_ifrs-full_LaterThanFiveYearsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">More than five years</link:label>
    <link:label id="lab_ifrs-full_LaterThanFiveYearsMember_019d3d97-76ce-7ab1-b294-e250121ff12e_verboseLabel_en-US" xlink:label="lab_ifrs-full_LaterThanFiveYearsMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">More than 5 years</link:label>
    <link:label id="lab_ifrs-full_LaterThanFiveYearsMember_label_en-US" xlink:label="lab_ifrs-full_LaterThanFiveYearsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Later than five years [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LaterThanFiveYearsMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanFiveYearsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LaterThanFiveYearsMember" xlink:to="lab_ifrs-full_LaterThanFiveYearsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfCapitalizedCostsForOilAndGasProductionExplanatory_019b46bd-05e4-71c5-ab19-fd00183ae3bc_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfCapitalizedCostsForOilAndGasProductionExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Capitalized Costs for Oil and Gas Producing Activities</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfCapitalizedCostsForOilAndGasProductionExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfCapitalizedCostsForOilAndGasProductionExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Capitalized Costs For Oil And Gas Production [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfCapitalizedCostsForOilAndGasProductionExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfCapitalizedCostsForOilAndGasProductionExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The disclosure of capitalized costs for oil and gas production.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfCapitalizedCostsForOilAndGasProductionExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfCapitalizedCostsForOilAndGasProductionExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfCapitalizedCostsForOilAndGasProductionExplanatory" xlink:to="lab_ck0000932782_DisclosureOfCapitalizedCostsForOilAndGasProductionExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ClassesOfFinancialAssetsDomain_019b46bd-053c-77c9-b096-90fba069fde1_terseLabel_en-US" xlink:label="lab_ifrs-full_ClassesOfFinancialAssetsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial assets measured at fair value</link:label>
    <link:label id="lab_ifrs-full_ClassesOfFinancialAssetsDomain_label_en-US" xlink:label="lab_ifrs-full_ClassesOfFinancialAssetsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Classes of financial assets [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ClassesOfFinancialAssetsDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialAssetsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ClassesOfFinancialAssetsDomain" xlink:to="lab_ifrs-full_ClassesOfFinancialAssetsDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentAdvances_019b46bd-05e5-7c31-b14d-357d0bdae4ad_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentAdvances" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Advances from customers</link:label>
    <link:label id="lab_ifrs-full_CurrentAdvances_label_en-US" xlink:label="lab_ifrs-full_CurrentAdvances" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current advances received, representing current contract liabilities for performance obligations satisfied at point in time</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAdvances" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentAdvances"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentAdvances" xlink:to="lab_ifrs-full_CurrentAdvances" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsExplanatory_019b46bd-0684-7d38-bf1f-94230669bf4b_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Intangible Assets, Net</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfIntangibleAssetsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of intangible assets [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfIntangibleAssetsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfIntangibleAssetsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BbbMinusGradeMember_019b46bd-053c-7005-8ee9-c88c85a893ba_terseLabel_en-US" xlink:label="lab_ck0000932782_BbbMinusGradeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">BBB-</link:label>
    <link:label id="lab_ck0000932782_BbbMinusGradeMember_label_en-US" xlink:label="lab_ck0000932782_BbbMinusGradeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">BBB Minus Grade [Member]</link:label>
    <link:label id="lab_ck0000932782_BbbMinusGradeMember_documentation_en-US" xlink:label="lab_ck0000932782_BbbMinusGradeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">BBB Minus Grade .</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BbbMinusGradeMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BbbMinusGradeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BbbMinusGradeMember" xlink:to="lab_ck0000932782_BbbMinusGradeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InterestRateSwapContractMember_019b46bd-05e4-77c5-a6d3-03b6a1b9bee4_terseLabel_en-US" xlink:label="lab_ifrs-full_InterestRateSwapContractMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest rate swaps</link:label>
    <link:label id="lab_ifrs-full_InterestRateSwapContractMember_label_en-US" xlink:label="lab_ifrs-full_InterestRateSwapContractMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest rate swap contract [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestRateSwapContractMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestRateSwapContractMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InterestRateSwapContractMember" xlink:to="lab_ifrs-full_InterestRateSwapContractMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InterbankYieldCurvesSensitivityDebt_019b46bd-0715-7938-9d65-2854be050660_verboseLabel_en-US" xlink:label="lab_ck0000932782_InterbankYieldCurvesSensitivityDebt" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Sensitivity debt</link:label>
    <link:label id="lab_ck0000932782_InterbankYieldCurvesSensitivityDebt_019b46bd-0715-7a41-91c9-8907ef425169_terseLabel_en-US" xlink:label="lab_ck0000932782_InterbankYieldCurvesSensitivityDebt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sensitivity debt</link:label>
    <link:label id="lab_ck0000932782_InterbankYieldCurvesSensitivityDebt_label_en-US" xlink:label="lab_ck0000932782_InterbankYieldCurvesSensitivityDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interbank yield curves sensitivity debt</link:label>
    <link:label id="lab_ck0000932782_InterbankYieldCurvesSensitivityDebt_documentation_en-US" xlink:label="lab_ck0000932782_InterbankYieldCurvesSensitivityDebt" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interbank yield curves sensitivity debt.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterbankYieldCurvesSensitivityDebt" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterbankYieldCurvesSensitivityDebt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterbankYieldCurvesSensitivityDebt" xlink:to="lab_ck0000932782_InterbankYieldCurvesSensitivityDebt" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EstimatedFutureContractPaymentsYearTwo_019b46bd-045f-720b-a57d-f18729128ee9_terseLabel_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPaymentsYearTwo" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2027</link:label>
    <link:label id="lab_ck0000932782_EstimatedFutureContractPaymentsYearTwo_label_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPaymentsYearTwo" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Estimated future contract payments year two</link:label>
    <link:label id="lab_ck0000932782_EstimatedFutureContractPaymentsYearTwo_documentation_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPaymentsYearTwo" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Estimated future contract payments year two.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EstimatedFutureContractPaymentsYearTwo" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EstimatedFutureContractPaymentsYearTwo"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EstimatedFutureContractPaymentsYearTwo" xlink:to="lab_ck0000932782_EstimatedFutureContractPaymentsYearTwo" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfNetFairValueGainsThroughProfitOrLossExplanatoryTableTextBlock_019b46bd-053c-79df-9c99-5704122d4016_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfNetFairValueGainsThroughProfitOrLossExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Net Gain (Loss) Recognized in Income on Derivative Financial Instruments</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfNetFairValueGainsThroughProfitOrLossExplanatoryTableTextBlock_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfNetFairValueGainsThroughProfitOrLossExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of Net Fair Value Gains through Profit or Loss Explanatory [Table Text Block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfNetFairValueGainsThroughProfitOrLossExplanatoryTableTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfNetFairValueGainsThroughProfitOrLossExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of net fair value gains through profit or loss explanatory.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfNetFairValueGainsThroughProfitOrLossExplanatoryTableTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfNetFairValueGainsThroughProfitOrLossExplanatoryTableTextBlock"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfNetFairValueGainsThroughProfitOrLossExplanatoryTableTextBlock" xlink:to="lab_ck0000932782_DisclosureOfNetFairValueGainsThroughProfitOrLossExplanatoryTableTextBlock" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_InterestExpenseOnLeaseLiabilities_019b46bd-05e4-7963-999e-863aaeafba50_terseLabel_en-US" xlink:label="lab_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued interest</link:label>
    <link:label id="lab_ifrs-full_InterestExpenseOnLeaseLiabilities_label_en-US" xlink:label="lab_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest expense on lease liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_InterestExpenseOnLeaseLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:to="lab_ifrs-full_InterestExpenseOnLeaseLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NinetyDaysSOFRPlus300BasisPointMember_019b46bd-05e4-7f47-89dd-c921e74936d1_terseLabel_en-US" xlink:label="lab_ck0000932782_NinetyDaysSOFRPlus300BasisPointMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ninety Days SOFR Plus 300 Basis Point</link:label>
    <link:label id="lab_ck0000932782_NinetyDaysSOFRPlus300BasisPointMember_label_en-US" xlink:label="lab_ck0000932782_NinetyDaysSOFRPlus300BasisPointMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ninety Days SOFR Plus 300 Basis Point [Member]</link:label>
    <link:label id="lab_ck0000932782_NinetyDaysSOFRPlus300BasisPointMember_documentation_en-US" xlink:label="lab_ck0000932782_NinetyDaysSOFRPlus300BasisPointMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ninety Days SOFR Plus 300 Basis Point</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NinetyDaysSOFRPlus300BasisPointMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NinetyDaysSOFRPlus300BasisPointMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NinetyDaysSOFRPlus300BasisPointMember" xlink:to="lab_ck0000932782_NinetyDaysSOFRPlus300BasisPointMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ImpairmentOfFinancialAssetsAxis_019b46bd-05e4-7168-80a6-7514eae52044_terseLabel_en-US" xlink:label="lab_ifrs-full_ImpairmentOfFinancialAssetsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Impairment of financial assets [axis]</link:label>
    <link:label id="lab_ifrs-full_ImpairmentOfFinancialAssetsAxis_label_en-US" xlink:label="lab_ifrs-full_ImpairmentOfFinancialAssetsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impairment of financial assets [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ImpairmentOfFinancialAssetsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ImpairmentOfFinancialAssetsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ImpairmentOfFinancialAssetsAxis" xlink:to="lab_ifrs-full_ImpairmentOfFinancialAssetsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CumulativeCurrencyTranslationEffectMember_019b46bd-0684-75a6-a2c5-9b0af8d4730e_terseLabel_en-US" xlink:label="lab_ck0000932782_CumulativeCurrencyTranslationEffectMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cumulative currency translation effect</link:label>
    <link:label id="lab_ck0000932782_CumulativeCurrencyTranslationEffectMember_label_en-US" xlink:label="lab_ck0000932782_CumulativeCurrencyTranslationEffectMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cumulative Currency Translation Effect [member]</link:label>
    <link:label id="lab_ck0000932782_CumulativeCurrencyTranslationEffectMember_documentation_en-US" xlink:label="lab_ck0000932782_CumulativeCurrencyTranslationEffectMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cumulative currency translation effect.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CumulativeCurrencyTranslationEffectMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CumulativeCurrencyTranslationEffectMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CumulativeCurrencyTranslationEffectMember" xlink:to="lab_ck0000932782_CumulativeCurrencyTranslationEffectMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IncomeFromContractsWithReinsurers_019b46bd-0684-7eab-97a7-a6329418ac4e_terseLabel_en-US" xlink:label="lab_ck0000932782_IncomeFromContractsWithReinsurers" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenues from reinsurance premiums</link:label>
    <link:label id="lab_ck0000932782_IncomeFromContractsWithReinsurers_label_en-US" xlink:label="lab_ck0000932782_IncomeFromContractsWithReinsurers" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income from contracts with reinsurers</link:label>
    <link:label id="lab_ck0000932782_IncomeFromContractsWithReinsurers_documentation_en-US" xlink:label="lab_ck0000932782_IncomeFromContractsWithReinsurers" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of income from contracts with reinsurers.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncomeFromContractsWithReinsurers" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncomeFromContractsWithReinsurers"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IncomeFromContractsWithReinsurers" xlink:to="lab_ck0000932782_IncomeFromContractsWithReinsurers" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ImpairmentOfRightsOfUse_019d8a9e-10fa-7013-8cb5-47a73be5c52e_terseLabel_en-US" xlink:label="lab_ck0000932782_ImpairmentOfRightsOfUse" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Impairment of rights of use</link:label>
    <link:label id="lab_ck0000932782_ImpairmentOfRightsOfUse_label_en-US" xlink:label="lab_ck0000932782_ImpairmentOfRightsOfUse" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impairment Of Rights Of Use</link:label>
    <link:label id="lab_ck0000932782_ImpairmentOfRightsOfUse_documentation_en-US" xlink:label="lab_ck0000932782_ImpairmentOfRightsOfUse" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Impairment Of Rights Of Use</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ImpairmentOfRightsOfUse" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ImpairmentOfRightsOfUse"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ImpairmentOfRightsOfUse" xlink:to="lab_ck0000932782_ImpairmentOfRightsOfUse" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProfitSharingMember_019b46bd-0715-7acd-86ca-660e84c049a8_terseLabel_en-US" xlink:label="lab_ck0000932782_ProfitSharingMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Production-sharing contracts</link:label>
    <link:label id="lab_ck0000932782_ProfitSharingMember_label_en-US" xlink:label="lab_ck0000932782_ProfitSharingMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit sharing [member]</link:label>
    <link:label id="lab_ck0000932782_ProfitSharingMember_documentation_en-US" xlink:label="lab_ck0000932782_ProfitSharingMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Profit sharing [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProfitSharingMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProfitSharingMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProfitSharingMember" xlink:to="lab_ck0000932782_ProfitSharingMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_AuditorName_019b46bd-053c-73b6-92cf-c714ed7fa269_terseLabel_en-US" xlink:label="lab_dei_AuditorName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Auditor Name</link:label>
    <link:label id="lab_dei_AuditorName_label_en-US" xlink:label="lab_dei_AuditorName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Auditor Name</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AuditorName" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AuditorName"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AuditorName" xlink:to="lab_dei_AuditorName" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PropaneMember_019b46bd-05e4-72fd-84c6-1dd6fe0949af_terseLabel_en-US" xlink:label="lab_ck0000932782_PropaneMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Propane</link:label>
    <link:label id="lab_ck0000932782_PropaneMember_label_en-US" xlink:label="lab_ck0000932782_PropaneMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Propane [member]</link:label>
    <link:label id="lab_ck0000932782_PropaneMember_documentation_en-US" xlink:label="lab_ck0000932782_PropaneMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Propane.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PropaneMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PropaneMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PropaneMember" xlink:to="lab_ck0000932782_PropaneMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MaderoRefineryMember_019b46bd-0715-7e44-9258-bc13c5f14a7d_terseLabel_en-US" xlink:label="lab_ck0000932782_MaderoRefineryMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Madero Refinery</link:label>
    <link:label id="lab_ck0000932782_MaderoRefineryMember_label_en-US" xlink:label="lab_ck0000932782_MaderoRefineryMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Madero Refinery [member]</link:label>
    <link:label id="lab_ck0000932782_MaderoRefineryMember_documentation_en-US" xlink:label="lab_ck0000932782_MaderoRefineryMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Madero refinery.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MaderoRefineryMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MaderoRefineryMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MaderoRefineryMember" xlink:to="lab_ck0000932782_MaderoRefineryMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AvinAluxMember_019b46bd-0684-7114-bbcf-f0fd8efb9d37_terseLabel_en-US" xlink:label="lab_ck0000932782_AvinAluxMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ayin-Alux</link:label>
    <link:label id="lab_ck0000932782_AvinAluxMember_label_en-US" xlink:label="lab_ck0000932782_AvinAluxMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Avin-Alux [Member]</link:label>
    <link:label id="lab_ck0000932782_AvinAluxMember_documentation_en-US" xlink:label="lab_ck0000932782_AvinAluxMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Avin-Alux</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AvinAluxMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AvinAluxMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AvinAluxMember" xlink:to="lab_ck0000932782_AvinAluxMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NumberOfSyndicatedCreditFacilities_019b46bd-05e4-7289-82d7-8e25fbc0aae3_terseLabel_en-US" xlink:label="lab_ck0000932782_NumberOfSyndicatedCreditFacilities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of syndicated credit facilities</link:label>
    <link:label id="lab_ck0000932782_NumberOfSyndicatedCreditFacilities_label_en-US" xlink:label="lab_ck0000932782_NumberOfSyndicatedCreditFacilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Syndicated Credit Facilities</link:label>
    <link:label id="lab_ck0000932782_NumberOfSyndicatedCreditFacilities_documentation_en-US" xlink:label="lab_ck0000932782_NumberOfSyndicatedCreditFacilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number Of Syndicated Credit Facilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NumberOfSyndicatedCreditFacilities" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NumberOfSyndicatedCreditFacilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NumberOfSyndicatedCreditFacilities" xlink:to="lab_ck0000932782_NumberOfSyndicatedCreditFacilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CrudeOilOptionsMember_019b46bd-0715-77a5-9970-4779c5db6c10_terseLabel_en-US" xlink:label="lab_ck0000932782_CrudeOilOptionsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Crude oil options</link:label>
    <link:label id="lab_ck0000932782_CrudeOilOptionsMember_label_en-US" xlink:label="lab_ck0000932782_CrudeOilOptionsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Crude Oil Options [Member]</link:label>
    <link:label id="lab_ck0000932782_CrudeOilOptionsMember_documentation_en-US" xlink:label="lab_ck0000932782_CrudeOilOptionsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Crude oil options [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CrudeOilOptionsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CrudeOilOptionsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CrudeOilOptionsMember" xlink:to="lab_ck0000932782_CrudeOilOptionsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CommitmentsAndContingenciesTable_019b46bd-0684-7275-a0c6-39dc88f81a51_terseLabel_en-US" xlink:label="lab_ck0000932782_CommitmentsAndContingenciesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commitments and contingencies [table]</link:label>
    <link:label id="lab_ck0000932782_CommitmentsAndContingenciesTable_label_en-US" xlink:label="lab_ck0000932782_CommitmentsAndContingenciesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and contingencies [table]</link:label>
    <link:label id="lab_ck0000932782_CommitmentsAndContingenciesTable_documentation_en-US" xlink:label="lab_ck0000932782_CommitmentsAndContingenciesTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule disclosing information related to details of commitments and contingencies.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CommitmentsAndContingenciesTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CommitmentsAndContingenciesTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CommitmentsAndContingenciesTable" xlink:to="lab_ck0000932782_CommitmentsAndContingenciesTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_SegmentConsolidationItemsDomain_019b46bd-045f-72f2-a272-c56ba51f91e6_terseLabel_en-US" xlink:label="lab_ifrs-full_SegmentConsolidationItemsDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment consolidation items</link:label>
    <link:label id="lab_ifrs-full_SegmentConsolidationItemsDomain_label_en-US" xlink:label="lab_ifrs-full_SegmentConsolidationItemsDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment consolidation items [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentConsolidationItemsDomain" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentConsolidationItemsDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_SegmentConsolidationItemsDomain" xlink:to="lab_ifrs-full_SegmentConsolidationItemsDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LaVentaGasProcessorComplexMember_019b46bd-0715-716d-88df-b61dd42bf36b_terseLabel_en-US" xlink:label="lab_ck0000932782_LaVentaGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">La Venta Gas Processor Complex</link:label>
    <link:label id="lab_ck0000932782_LaVentaGasProcessorComplexMember_label_en-US" xlink:label="lab_ck0000932782_LaVentaGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">La Venta Gas Processor Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_LaVentaGasProcessorComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_LaVentaGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">La Venta Gas Processor Complex</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LaVentaGasProcessorComplexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LaVentaGasProcessorComplexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LaVentaGasProcessorComplexMember" xlink:to="lab_ck0000932782_LaVentaGasProcessorComplexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MiquetlaMember_019b46bd-0684-779f-828b-64c4f8829ef6_terseLabel_en-US" xlink:label="lab_ck0000932782_MiquetlaMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Miquetla</link:label>
    <link:label id="lab_ck0000932782_MiquetlaMember_label_en-US" xlink:label="lab_ck0000932782_MiquetlaMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Miquetla [member]</link:label>
    <link:label id="lab_ck0000932782_MiquetlaMember_documentation_en-US" xlink:label="lab_ck0000932782_MiquetlaMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Miquetla.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MiquetlaMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MiquetlaMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MiquetlaMember" xlink:to="lab_ck0000932782_MiquetlaMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PurchasesExpense_019b46bd-0684-7e64-9705-8fa668205c7d_terseLabel_en-US" xlink:label="lab_ck0000932782_PurchasesExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Purchases</link:label>
    <link:label id="lab_ck0000932782_PurchasesExpense_label_en-US" xlink:label="lab_ck0000932782_PurchasesExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Purchases expense</link:label>
    <link:label id="lab_ck0000932782_PurchasesExpense_documentation_en-US" xlink:label="lab_ck0000932782_PurchasesExpense" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Purchases expense.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PurchasesExpense" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PurchasesExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PurchasesExpense" xlink:to="lab_ck0000932782_PurchasesExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DryGasMember_019b46bd-0684-763f-aa21-a2705c676034_terseLabel_en-US" xlink:label="lab_ck0000932782_DryGasMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dry Gas</link:label>
    <link:label id="lab_ck0000932782_DryGasMember_label_en-US" xlink:label="lab_ck0000932782_DryGasMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dry Gas [Member]</link:label>
    <link:label id="lab_ck0000932782_DryGasMember_documentation_en-US" xlink:label="lab_ck0000932782_DryGasMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Dry Gas [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DryGasMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DryGasMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DryGasMember" xlink:to="lab_ck0000932782_DryGasMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PmiTrdDacRevolvingCreditLinesMember_019b46bd-05e5-75ca-bde5-0f22b7e2c97f_terseLabel_en-US" xlink:label="lab_ck0000932782_PmiTrdDacRevolvingCreditLinesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">PMI TRD DAC revolving credit lines</link:label>
    <link:label id="lab_ck0000932782_PmiTrdDacRevolvingCreditLinesMember_label_en-US" xlink:label="lab_ck0000932782_PmiTrdDacRevolvingCreditLinesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">PMI TRD DAC revolving credit lines [Member]</link:label>
    <link:label id="lab_ck0000932782_PmiTrdDacRevolvingCreditLinesMember_documentation_en-US" xlink:label="lab_ck0000932782_PmiTrdDacRevolvingCreditLinesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">PMI TRD DAC revolving credit lines [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PmiTrdDacRevolvingCreditLinesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PmiTrdDacRevolvingCreditLinesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PmiTrdDacRevolvingCreditLinesMember" xlink:to="lab_ck0000932782_PmiTrdDacRevolvingCreditLinesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory_019b46bd-0684-75cc-9c9e-2b06c70b115e_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customers and Other Financing and Non-Financing Accounts Receivable</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of trade and other receivables [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:to="lab_ifrs-full_DisclosureOfTradeAndOtherReceivablesExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DebtInstrument1Axis_019b46bd-05e4-79d9-86fc-604b045032a2_terseLabel_en-US" xlink:label="lab_ck0000932782_DebtInstrument1Axis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument 1 [axis]</link:label>
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    <link:label id="lab_ck0000932782_DebtInstrument1Axis_documentation_en-US" xlink:label="lab_ck0000932782_DebtInstrument1Axis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt instrument 1.</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DebtInstrument1Axis" xlink:to="lab_ck0000932782_DebtInstrument1Axis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationMember_019b46bd-05e4-7728-abcc-116532fa314c_terseLabel_en-US" xlink:label="lab_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement of comprehensive income, profit or loss location</link:label>
    <link:label id="lab_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationMember_label_en-US" xlink:label="lab_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of comprehensive income, profit or loss location [member]</link:label>
    <link:label id="lab_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationMember_documentation_en-US" xlink:label="lab_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Statement of comprehensive income, profit or loss location 1.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationMember" xlink:to="lab_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CurrentGovernmentDebtInstrumentsHeld_019b46bd-05e5-7519-a779-fa39a1264d6e_terseLabel_en-US" xlink:label="lab_ck0000932782_CurrentGovernmentDebtInstrumentsHeld" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Government Bonds</link:label>
    <link:label id="lab_ck0000932782_CurrentGovernmentDebtInstrumentsHeld_label_en-US" xlink:label="lab_ck0000932782_CurrentGovernmentDebtInstrumentsHeld" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current Government Debt Instruments Held</link:label>
    <link:label id="lab_ck0000932782_CurrentGovernmentDebtInstrumentsHeld_documentation_en-US" xlink:label="lab_ck0000932782_CurrentGovernmentDebtInstrumentsHeld" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Current government debt instruments held.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CurrentGovernmentDebtInstrumentsHeld" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CurrentGovernmentDebtInstrumentsHeld"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CurrentGovernmentDebtInstrumentsHeld" xlink:to="lab_ck0000932782_CurrentGovernmentDebtInstrumentsHeld" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_CurrentSundryCreditors_019b46bd-05e4-7da7-b915-364b3ab1386b_negatedLabel_en-US" xlink:label="lab_ck0000932782_CurrentSundryCreditors" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Suppliers</link:label>
    <link:label id="lab_ck0000932782_CurrentSundryCreditors_label_en-US" xlink:label="lab_ck0000932782_CurrentSundryCreditors" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current sundry creditors</link:label>
    <link:label id="lab_ck0000932782_CurrentSundryCreditors_documentation_en-US" xlink:label="lab_ck0000932782_CurrentSundryCreditors" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Current sundry creditors.</link:label>
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    <link:label id="lab_ck0000932782_A3.750NotesDue2026Member_label_en-US" xlink:label="lab_ck0000932782_A3.750NotesDue2026Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">3.750% Notes Due 2026 [Member]</link:label>
    <link:label id="lab_ck0000932782_A3.750NotesDue2026Member_documentation_en-US" xlink:label="lab_ck0000932782_A3.750NotesDue2026Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">3.750% Notes Due 2026</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_A3.750NotesDue2026Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_A3.750NotesDue2026Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_A3.750NotesDue2026Member" xlink:to="lab_ck0000932782_A3.750NotesDue2026Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities_019b46bd-05e4-7fd6-ab81-bc0c9f204a88_totalLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash flows from operating activities</link:label>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities_label_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInOperatingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash flows from (used in) operating activities</link:label>
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    <link:label id="lab_dei_EntityDomain_019b46bd-053d-7c62-b8a0-ed158508783e_terseLabel_en-US" xlink:label="lab_dei_EntityDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity [Domain]</link:label>
    <link:label id="lab_dei_EntityDomain_label_en-US" xlink:label="lab_dei_EntityDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityDomain" xlink:to="lab_dei_EntityDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_MiscellaneousOtherOperatingIncome_019b46bd-0684-777b-9534-be07ee893da1_terseLabel_en-US" xlink:label="lab_ifrs-full_MiscellaneousOtherOperatingIncome" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other income</link:label>
    <link:label id="lab_ifrs-full_MiscellaneousOtherOperatingIncome_label_en-US" xlink:label="lab_ifrs-full_MiscellaneousOtherOperatingIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Miscellaneous other operating income</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MiscellaneousOtherOperatingIncome" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MiscellaneousOtherOperatingIncome"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_MiscellaneousOtherOperatingIncome" xlink:to="lab_ifrs-full_MiscellaneousOtherOperatingIncome" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CertificadosBursatilesMember_019b46bd-0715-7b66-bb9d-f041a23fe718_terseLabel_en-US" xlink:label="lab_ck0000932782_CertificadosBursatilesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Certificados burs&#225;tiles</link:label>
    <link:label id="lab_ck0000932782_CertificadosBursatilesMember_label_en-US" xlink:label="lab_ck0000932782_CertificadosBursatilesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Certificados Bursatiles [member]</link:label>
    <link:label id="lab_ck0000932782_CertificadosBursatilesMember_documentation_en-US" xlink:label="lab_ck0000932782_CertificadosBursatilesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Certificados bursatiles.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CertificadosBursatilesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CertificadosBursatilesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CertificadosBursatilesMember" xlink:to="lab_ck0000932782_CertificadosBursatilesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NonAssociatedGasAndCondensatesMember_019d3d83-2da1-7b7b-8736-61c750e5ac4e_terseLabel_en-US" xlink:label="lab_ck0000932782_NonAssociatedGasAndCondensatesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-Associated Gas And Condensates</link:label>
    <link:label id="lab_ck0000932782_NonAssociatedGasAndCondensatesMember_label_en-US" xlink:label="lab_ck0000932782_NonAssociatedGasAndCondensatesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-Associated Gas And Condensates [Member]</link:label>
    <link:label id="lab_ck0000932782_NonAssociatedGasAndCondensatesMember_documentation_en-US" xlink:label="lab_ck0000932782_NonAssociatedGasAndCondensatesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Non-Associated Gas And Condensates</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NonAssociatedGasAndCondensatesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NonAssociatedGasAndCondensatesMember"/>
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    <link:label id="lab_dei_DocumentFiscalYearFocus_019b46bd-053c-762f-82c9-d3f8bf2ee6ce_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Fiscal Year Focus</link:label>
    <link:label id="lab_dei_DocumentFiscalYearFocus_label_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Fiscal Year Focus</link:label>
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    <link:label id="lab_ck0000932782_FinancingCostCapitalisedToFixedAssets_label_en-US" xlink:label="lab_ck0000932782_FinancingCostCapitalisedToFixedAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing cost capitalised to fixed assets</link:label>
    <link:label id="lab_ck0000932782_FinancingCostCapitalisedToFixedAssets_documentation_en-US" xlink:label="lab_ck0000932782_FinancingCostCapitalisedToFixedAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financing cost capitalised to fixed assets.</link:label>
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    <link:label id="lab_ck0000932782_EstimatedValueOfContracts_documentation_en-US" xlink:label="lab_ck0000932782_EstimatedValueOfContracts" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Estimated value of contracts.</link:label>
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    <link:label id="lab_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationAxis_documentation_en-US" xlink:label="lab_ck0000932782_StatementOfComprehensiveIncomeProfitOrLossLocationAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Statement of comprehensive income, profit or loss location.</link:label>
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    <link:label id="lab_ck0000932782_OtherMiscellaneousReceivablesCurrent_documentation_en-US" xlink:label="lab_ck0000932782_OtherMiscellaneousReceivablesCurrent" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Miscellaneous Receivables Current.</link:label>
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    <link:label id="lab_ck0000932782_CactusGasProcessorComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_CactusGasProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cactus Gas Processor Complex</link:label>
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    <link:label id="lab_ck0000932782_DisclosureOfStructuredEntitiesExplanatoryTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfStructuredEntitiesExplanatoryTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of structured entities.</link:label>
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    <link:label id="lab_ifrs-full_DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfExpectedImpactOfInitialApplicationOfNewStandardsOrInterpretations" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of expected impact of initial application of new standards or interpretations [text block]</link:label>
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    <link:label id="lab_ck0000932782_Claims_label_en-US" xlink:label="lab_ck0000932782_Claims" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Claims</link:label>
    <link:label id="lab_ck0000932782_Claims_documentation_en-US" xlink:label="lab_ck0000932782_Claims" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Claims.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_Claims" xlink:href="ck0000932782-20251231.xsd#ck0000932782_Claims"/>
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    <link:label id="lab_ck0000932782_AuxiliaryServicesWithThirdParties_label_en-US" xlink:label="lab_ck0000932782_AuxiliaryServicesWithThirdParties" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Auxiliary services with third-parties</link:label>
    <link:label id="lab_ck0000932782_AuxiliaryServicesWithThirdParties_documentation_en-US" xlink:label="lab_ck0000932782_AuxiliaryServicesWithThirdParties" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Auxiliary services with third-parties.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AuxiliaryServicesWithThirdParties" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AuxiliaryServicesWithThirdParties"/>
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    <link:label id="lab_srt_GuarantorSubsidiariesMember_label_en-US" xlink:label="lab_srt_GuarantorSubsidiariesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Guarantor Subsidiaries [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_GuarantorSubsidiariesMember" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_GuarantorSubsidiariesMember"/>
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    <link:label id="lab_ck0000932782_IncomeTaxReclassificationAdjustmentsAmountAfterReclassification_label_en-US" xlink:label="lab_ck0000932782_IncomeTaxReclassificationAdjustmentsAmountAfterReclassification" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Reclassification Adjustments Amount After Reclassification</link:label>
    <link:label id="lab_ck0000932782_IncomeTaxReclassificationAdjustmentsAmountAfterReclassification_documentation_en-US" xlink:label="lab_ck0000932782_IncomeTaxReclassificationAdjustmentsAmountAfterReclassification" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Income tax reclassification adjustments amount after reclasification.</link:label>
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    <link:label id="lab_ck0000932782_AffiliatedCompaniesMember_label_en-US" xlink:label="lab_ck0000932782_AffiliatedCompaniesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Affiliated Companies [Member]</link:label>
    <link:label id="lab_ck0000932782_AffiliatedCompaniesMember_documentation_en-US" xlink:label="lab_ck0000932782_AffiliatedCompaniesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Affiliated companies.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AffiliatedCompaniesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AffiliatedCompaniesMember"/>
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    <link:label id="lab_ck0000932782_GovernmentBondsMember_label_en-US" xlink:label="lab_ck0000932782_GovernmentBondsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Government Bonds [Member]</link:label>
    <link:label id="lab_ck0000932782_GovernmentBondsMember_documentation_en-US" xlink:label="lab_ck0000932782_GovernmentBondsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Government Bonds [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_GovernmentBondsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_GovernmentBondsMember"/>
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    <link:label id="lab_ck0000932782_InterCompanyChargesAndDeductions_documentation_en-US" xlink:label="lab_ck0000932782_InterCompanyChargesAndDeductions" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Inter company charges and deductions.</link:label>
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    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionMarch2026Member_documentation_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionMarch2026Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position, March 2026</link:label>
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    <link:label id="lab_ck0000932782_DeerParkMember_documentation_en-US" xlink:label="lab_ck0000932782_DeerParkMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deer Park.</link:label>
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    <link:label id="lab_ck0000932782_EkBalamBlockMember_019b46bd-0684-7418-adfb-7c657ef3235b_terseLabel_en-US" xlink:label="lab_ck0000932782_EkBalamBlockMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ek Balam Block</link:label>
    <link:label id="lab_ck0000932782_EkBalamBlockMember_label_en-US" xlink:label="lab_ck0000932782_EkBalamBlockMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ek Balam Block [member]</link:label>
    <link:label id="lab_ck0000932782_EkBalamBlockMember_documentation_en-US" xlink:label="lab_ck0000932782_EkBalamBlockMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ek Balam block.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EkBalamBlockMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EkBalamBlockMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EkBalamBlockMember" xlink:to="lab_ck0000932782_EkBalamBlockMember" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_LocalPhoneNumber_019b46bd-05e4-74d1-bfe5-dae3f4e65a24_terseLabel_en-US" xlink:label="lab_dei_LocalPhoneNumber" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Local Phone Number</link:label>
    <link:label id="lab_dei_LocalPhoneNumber_label_en-US" xlink:label="lab_dei_LocalPhoneNumber" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Local Phone Number</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_LocalPhoneNumber" xlink:to="lab_dei_LocalPhoneNumber" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MaturityPeriodTwoMember_019b46bd-053c-7ff7-8219-a9262c362e98_terseLabel_en-US" xlink:label="lab_ck0000932782_MaturityPeriodTwoMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maturity Period Two</link:label>
    <link:label id="lab_ck0000932782_MaturityPeriodTwoMember_label_en-US" xlink:label="lab_ck0000932782_MaturityPeriodTwoMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maturity Period Two [member]</link:label>
    <link:label id="lab_ck0000932782_MaturityPeriodTwoMember_documentation_en-US" xlink:label="lab_ck0000932782_MaturityPeriodTwoMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Maturity period two.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MaturityPeriodTwoMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MaturityPeriodTwoMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MaturityPeriodTwoMember" xlink:to="lab_ck0000932782_MaturityPeriodTwoMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract_019b46bd-053d-7661-99b1-ef4ea59a252f_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about property, plant and equipment [abstract]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about property, plant and equipment [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract" xlink:to="lab_ifrs-full_DisclosureOfPropertyPlantAndEquipmentAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BorrowingsTerm_019d8b26-bd8f-7fe5-ab95-6e2aa5708a54_terseLabel_en-US" xlink:label="lab_ck0000932782_BorrowingsTerm" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Borrowings term</link:label>
    <link:label id="lab_ck0000932782_BorrowingsTerm_label_en-US" xlink:label="lab_ck0000932782_BorrowingsTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Borrowings term</link:label>
    <link:label id="lab_ck0000932782_BorrowingsTerm_documentation_en-US" xlink:label="lab_ck0000932782_BorrowingsTerm" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Borrowings term</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BorrowingsTerm" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BorrowingsTerm"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BorrowingsTerm" xlink:to="lab_ck0000932782_BorrowingsTerm" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_A2.750NotesDue2027Member_019bd5bb-4951-7340-8a00-76d9e47e5f0c_terseLabel_en-US" xlink:label="lab_ck0000932782_A2.750NotesDue2027Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2.750% Notes Due 2027</link:label>
    <link:label id="lab_ck0000932782_A2.750NotesDue2027Member_label_en-US" xlink:label="lab_ck0000932782_A2.750NotesDue2027Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">2.750% Notes Due 2027 [Member]</link:label>
    <link:label id="lab_ck0000932782_A2.750NotesDue2027Member_documentation_en-US" xlink:label="lab_ck0000932782_A2.750NotesDue2027Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">2.750% Notes Due 2027</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_A2.750NotesDue2027Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_A2.750NotesDue2027Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_A2.750NotesDue2027Member" xlink:to="lab_ck0000932782_A2.750NotesDue2027Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodExplanatory_019b46bd-0684-71aa-bc58-8eaba90c6f64_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Government Contributions to Petr&#243;leos Mexicanos through the Ministry of Energy</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of non-adjusting events after reporting period [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodExplanatory" xlink:to="lab_ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughOtherChangesIntangibleAssetsAndGoodwill_019b46bd-0715-757b-8648-cbb79cc729e2_terseLabel_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughOtherChangesIntangibleAssetsAndGoodwill" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Transfers against expenses</link:label>
    <link:label id="lab_ifrs-full_IncreaseDecreaseThroughOtherChangesIntangibleAssetsAndGoodwill_label_en-US" xlink:label="lab_ifrs-full_IncreaseDecreaseThroughOtherChangesIntangibleAssetsAndGoodwill" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (decrease) through other changes, intangible assets and goodwill</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseThroughOtherChangesIntangibleAssetsAndGoodwill" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IncreaseDecreaseThroughOtherChangesIntangibleAssetsAndGoodwill"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_IncreaseDecreaseThroughOtherChangesIntangibleAssetsAndGoodwill" xlink:to="lab_ifrs-full_IncreaseDecreaseThroughOtherChangesIntangibleAssetsAndGoodwill" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityVoluntaryFilers_019b46bd-05e4-7a89-8146-34ad10fa2c2e_terseLabel_en-US" xlink:label="lab_dei_EntityVoluntaryFilers" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Voluntary Filers</link:label>
    <link:label id="lab_dei_EntityVoluntaryFilers_label_en-US" xlink:label="lab_dei_EntityVoluntaryFilers" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Voluntary Filers</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityVoluntaryFilers" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityVoluntaryFilers"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityVoluntaryFilers" xlink:to="lab_dei_EntityVoluntaryFilers" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_019b46bd-0684-7b38-844d-2e1dd3650a87_terseLabel_en-US" xlink:label="lab_ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proportion of ownership interest held</link:label>
    <link:label id="lab_ifrs-full_ProportionOfOwnershipInterestInSubsidiary_label_en-US" xlink:label="lab_ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proportion of ownership interest in subsidiary</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProportionOfOwnershipInterestInSubsidiary"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:to="lab_ifrs-full_ProportionOfOwnershipInterestInSubsidiary" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ForeignExchangeRateDomain_019b46bd-053c-7fe8-bea0-bdd51d7f2d9a_terseLabel_en-US" xlink:label="lab_ck0000932782_ForeignExchangeRateDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign Exchange Rate [domain]</link:label>
    <link:label id="lab_ck0000932782_ForeignExchangeRateDomain_label_en-US" xlink:label="lab_ck0000932782_ForeignExchangeRateDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Exchange Rate [domain]</link:label>
    <link:label id="lab_ck0000932782_ForeignExchangeRateDomain_documentation_en-US" xlink:label="lab_ck0000932782_ForeignExchangeRateDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Foreign Exchange Rate [domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ForeignExchangeRateDomain" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ForeignExchangeRateDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ForeignExchangeRateDomain" xlink:to="lab_ck0000932782_ForeignExchangeRateDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfDebtLineItems_019b46bd-05e4-7a14-bcaf-b20368fc4b2d_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfDebtLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure Of Debt [Line Items]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfDebtLineItems_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfDebtLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Debt [Line Items]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfDebtLineItems_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfDebtLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Debt [Line Items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfDebtLineItems" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfDebtLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfDebtLineItems" xlink:to="lab_ck0000932782_DisclosureOfDebtLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FinancingCostsRates_019b46bd-053d-7999-84b8-1cc85c8a529b_terseLabel_en-US" xlink:label="lab_ck0000932782_FinancingCostsRates" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing costs rates</link:label>
    <link:label id="lab_ck0000932782_FinancingCostsRates_label_en-US" xlink:label="lab_ck0000932782_FinancingCostsRates" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Costs Rates</link:label>
    <link:label id="lab_ck0000932782_FinancingCostsRates_documentation_en-US" xlink:label="lab_ck0000932782_FinancingCostsRates" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financing costs rates.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FinancingCostsRates" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FinancingCostsRates"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FinancingCostsRates" xlink:to="lab_ck0000932782_FinancingCostsRates" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ShortTermMaturities_019b46bd-053c-7c4a-adef-f339b4f07a0e_terseLabel_en-US" xlink:label="lab_ck0000932782_ShortTermMaturities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term maturities</link:label>
    <link:label id="lab_ck0000932782_ShortTermMaturities_label_en-US" xlink:label="lab_ck0000932782_ShortTermMaturities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-Term Maturities</link:label>
    <link:label id="lab_ck0000932782_ShortTermMaturities_documentation_en-US" xlink:label="lab_ck0000932782_ShortTermMaturities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">short-term maturities.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ShortTermMaturities" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ShortTermMaturities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ShortTermMaturities" xlink:to="lab_ck0000932782_ShortTermMaturities" xlink:type="arc" order="1"/>
    <link:label id="lab_dei_EntityRegistrantName_019b46bd-05e4-7174-ae21-3ab603273bd2_terseLabel_en-US" xlink:label="lab_dei_EntityRegistrantName" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Registrant Name</link:label>
    <link:label id="lab_dei_EntityRegistrantName_label_en-US" xlink:label="lab_dei_EntityRegistrantName" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Registrant Name</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityRegistrantName" xlink:to="lab_dei_EntityRegistrantName" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_UnsuccessfulWellsFromIntangibleAssets_019b46bd-053c-7036-a384-33d71675fe10_verboseLabel_en-US" xlink:label="lab_ck0000932782_UnsuccessfulWellsFromIntangibleAssets" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Unsuccessful wells from intangible assets</link:label>
    <link:label id="lab_ck0000932782_UnsuccessfulWellsFromIntangibleAssets_label_en-US" xlink:label="lab_ck0000932782_UnsuccessfulWellsFromIntangibleAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unsuccessful Wells From Intangible Assets</link:label>
    <link:label id="lab_ck0000932782_UnsuccessfulWellsFromIntangibleAssets_documentation_en-US" xlink:label="lab_ck0000932782_UnsuccessfulWellsFromIntangibleAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Unsuccesful wells from intangible assets.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_UnsuccessfulWellsFromIntangibleAssets" xlink:href="ck0000932782-20251231.xsd#ck0000932782_UnsuccessfulWellsFromIntangibleAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_UnsuccessfulWellsFromIntangibleAssets" xlink:to="lab_ck0000932782_UnsuccessfulWellsFromIntangibleAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains_019b46bd-053d-704a-a326-4a0cf8f5bb59_terseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrealized foreign exchange (income) loss</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains_019b46bd-053d-75ef-b1c3-09a000c7af0e_verboseLabel_en-US" xlink:label="lab_ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Unrealized foreign exchange (income) loss</link:label>
    <link:label id="lab_ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains_label_en-US" xlink:label="lab_ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments for unrealised foreign exchange losses (gains)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains" xlink:to="lab_ifrs-full_AdjustmentsForUnrealisedForeignExchangeLossesGains" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_MeasurementAxis_019db06c-da5c-7864-9348-6f80e46297cb_terseLabel_en-US" xlink:label="lab_ifrs-full_MeasurementAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Measurement [axis]</link:label>
    <link:label id="lab_ifrs-full_MeasurementAxis_label_en-US" xlink:label="lab_ifrs-full_MeasurementAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_MeasurementAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MeasurementAxis"/>
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    <link:label id="lab_ck0000932782_NumberOfCrossCurrencySwapsWithARecouponingClauseSubjectToPartialRestructure_label_en-US" xlink:label="lab_ck0000932782_NumberOfCrossCurrencySwapsWithARecouponingClauseSubjectToPartialRestructure" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Cross Currency Swaps with a Recouponing Clause Subject to Partial Restructure</link:label>
    <link:label id="lab_ck0000932782_NumberOfCrossCurrencySwapsWithARecouponingClauseSubjectToPartialRestructure_documentation_en-US" xlink:label="lab_ck0000932782_NumberOfCrossCurrencySwapsWithARecouponingClauseSubjectToPartialRestructure" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of Cross Currency Swaps with a Recouponing Clause Subject to Partial Restructure</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NumberOfCrossCurrencySwapsWithARecouponingClauseSubjectToPartialRestructure" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NumberOfCrossCurrencySwapsWithARecouponingClauseSubjectToPartialRestructure"/>
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    <link:label id="lab_ck0000932782_MaterialsAndProductsInStockMember_019b46bd-0715-72f9-a2a3-83298b5e8adc_terseLabel_en-US" xlink:label="lab_ck0000932782_MaterialsAndProductsInStockMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Materials and products in stock</link:label>
    <link:label id="lab_ck0000932782_MaterialsAndProductsInStockMember_label_en-US" xlink:label="lab_ck0000932782_MaterialsAndProductsInStockMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Materials And Products In Stock [member]</link:label>
    <link:label id="lab_ck0000932782_MaterialsAndProductsInStockMember_documentation_en-US" xlink:label="lab_ck0000932782_MaterialsAndProductsInStockMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Materials and products in stock</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MaterialsAndProductsInStockMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MaterialsAndProductsInStockMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MaterialsAndProductsInStockMember" xlink:to="lab_ck0000932782_MaterialsAndProductsInStockMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AutomotiveIncentiveAverageRequestTerm_019b46bd-0684-7a87-aeef-e8d05cd3575f_terseLabel_en-US" xlink:label="lab_ck0000932782_AutomotiveIncentiveAverageRequestTerm" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Automotive incentive, request submission (in days)</link:label>
    <link:label id="lab_ck0000932782_AutomotiveIncentiveAverageRequestTerm_label_en-US" xlink:label="lab_ck0000932782_AutomotiveIncentiveAverageRequestTerm" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Automotive Incentive, Average Request, Term</link:label>
    <link:label id="lab_ck0000932782_AutomotiveIncentiveAverageRequestTerm_documentation_en-US" xlink:label="lab_ck0000932782_AutomotiveIncentiveAverageRequestTerm" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Automotive Incentive, Average Request, Term</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AutomotiveIncentiveAverageRequestTerm" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AutomotiveIncentiveAverageRequestTerm"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AutomotiveIncentiveAverageRequestTerm" xlink:to="lab_ck0000932782_AutomotiveIncentiveAverageRequestTerm" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentReceivablesFromContractsWithCustomers_019b46bd-0715-70c1-9ae1-b37a6006d0af_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentReceivablesFromContractsWithCustomers" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Customers, net</link:label>
    <link:label id="lab_ifrs-full_CurrentReceivablesFromContractsWithCustomers_label_en-US" xlink:label="lab_ifrs-full_CurrentReceivablesFromContractsWithCustomers" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current receivables from contracts with customers</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentReceivablesFromContractsWithCustomers" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentReceivablesFromContractsWithCustomers"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentReceivablesFromContractsWithCustomers" xlink:to="lab_ifrs-full_CurrentReceivablesFromContractsWithCustomers" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfCostAndExpensesByNatureAbstract_019b46bd-0684-7b60-a04e-29433a762c19_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfCostAndExpensesByNatureAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of cost and expenses by nature [abstract]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfCostAndExpensesByNatureAbstract_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfCostAndExpensesByNatureAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of cost and expenses by nature [abstract]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfCostAndExpensesByNatureAbstract_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfCostAndExpensesByNatureAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of cost and expenses by nature [abstract].</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfCostAndExpensesByNatureAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfCostAndExpensesByNatureAbstract"/>
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    <link:label id="lab_ck0000932782_PetrochemicalMember_019b46bd-053c-746f-bc7b-b870df3d83b1_terseLabel_en-US" xlink:label="lab_ck0000932782_PetrochemicalMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Petrochemicals</link:label>
    <link:label id="lab_ck0000932782_PetrochemicalMember_label_en-US" xlink:label="lab_ck0000932782_PetrochemicalMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Petrochemical [member]</link:label>
    <link:label id="lab_ck0000932782_PetrochemicalMember_documentation_en-US" xlink:label="lab_ck0000932782_PetrochemicalMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Petrochemical [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PetrochemicalMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PetrochemicalMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PetrochemicalMember" xlink:to="lab_ck0000932782_PetrochemicalMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IncreaseDecreaseInIncomeTaxesAbstract_019b46bd-0715-7d06-a4e3-ae3e70ed3911_terseLabel_en-US" xlink:label="lab_ck0000932782_IncreaseDecreaseInIncomeTaxesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase (decrease) resulting from:</link:label>
    <link:label id="lab_ck0000932782_IncreaseDecreaseInIncomeTaxesAbstract_label_en-US" xlink:label="lab_ck0000932782_IncreaseDecreaseInIncomeTaxesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase decrease in income taxes [abstract]</link:label>
    <link:label id="lab_ck0000932782_IncreaseDecreaseInIncomeTaxesAbstract_documentation_en-US" xlink:label="lab_ck0000932782_IncreaseDecreaseInIncomeTaxesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Increase decrease in income taxes.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncreaseDecreaseInIncomeTaxesAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncreaseDecreaseInIncomeTaxesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IncreaseDecreaseInIncomeTaxesAbstract" xlink:to="lab_ck0000932782_IncreaseDecreaseInIncomeTaxesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CapitalisedOilAndGasProducingCosts_019b46bd-05e4-7145-ae73-e85d0b3d6668_terseLabel_en-US" xlink:label="lab_ck0000932782_CapitalisedOilAndGasProducingCosts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net capitalized costs</link:label>
    <link:label id="lab_ck0000932782_CapitalisedOilAndGasProducingCosts_label_en-US" xlink:label="lab_ck0000932782_CapitalisedOilAndGasProducingCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capitalised oil and gas producing costs</link:label>
    <link:label id="lab_ck0000932782_CapitalisedOilAndGasProducingCosts_documentation_en-US" xlink:label="lab_ck0000932782_CapitalisedOilAndGasProducingCosts" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Capitalised oil and gas producing costs.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CapitalisedOilAndGasProducingCosts" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CapitalisedOilAndGasProducingCosts"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CapitalisedOilAndGasProducingCosts" xlink:to="lab_ck0000932782_CapitalisedOilAndGasProducingCosts" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NinetyDaySOFRPlus350BasisPointMember_019b46bd-0715-7758-966b-813246c55b19_terseLabel_en-US" xlink:label="lab_ck0000932782_NinetyDaySOFRPlus350BasisPointMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ninety Day SOFR Plus 350 Basis Point</link:label>
    <link:label id="lab_ck0000932782_NinetyDaySOFRPlus350BasisPointMember_label_en-US" xlink:label="lab_ck0000932782_NinetyDaySOFRPlus350BasisPointMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ninety Day SOFR Plus 350 Basis Point [Member]</link:label>
    <link:label id="lab_ck0000932782_NinetyDaySOFRPlus350BasisPointMember_documentation_en-US" xlink:label="lab_ck0000932782_NinetyDaySOFRPlus350BasisPointMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ninety Day SOFR Plus 350 Basis Point</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NinetyDaySOFRPlus350BasisPointMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NinetyDaySOFRPlus350BasisPointMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NinetyDaySOFRPlus350BasisPointMember" xlink:to="lab_ck0000932782_NinetyDaySOFRPlus350BasisPointMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfExpectedBenefitForDucTable_019b46bd-0684-7a55-a709-aef0bcd12cdd_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfExpectedBenefitForDucTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure Of Expected Benefit For DUC [table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfExpectedBenefitForDucTable_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfExpectedBenefitForDucTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Expected Benefit For DUC [table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfExpectedBenefitForDucTable_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfExpectedBenefitForDucTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Expected Benefit For DUC [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfExpectedBenefitForDucTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfExpectedBenefitForDucTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfExpectedBenefitForDucTable" xlink:to="lab_ck0000932782_DisclosureOfExpectedBenefitForDucTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherRevenuesMember_019b46bd-053d-7736-9ad0-243350a127c0_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherRevenuesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Revenues</link:label>
    <link:label id="lab_ck0000932782_OtherRevenuesMember_label_en-US" xlink:label="lab_ck0000932782_OtherRevenuesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Revenues [Member]</link:label>
    <link:label id="lab_ck0000932782_OtherRevenuesMember_documentation_en-US" xlink:label="lab_ck0000932782_OtherRevenuesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Revenues</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherRevenuesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherRevenuesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherRevenuesMember" xlink:to="lab_ck0000932782_OtherRevenuesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PercentOfGeneralVatCredit_019b46bd-053c-7981-962d-d9a9ec7ed271_terseLabel_en-US" xlink:label="lab_ck0000932782_PercentOfGeneralVatCredit" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percent of general VAT credit</link:label>
    <link:label id="lab_ck0000932782_PercentOfGeneralVatCredit_label_en-US" xlink:label="lab_ck0000932782_PercentOfGeneralVatCredit" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percent Of General VAT Credit</link:label>
    <link:label id="lab_ck0000932782_PercentOfGeneralVatCredit_documentation_en-US" xlink:label="lab_ck0000932782_PercentOfGeneralVatCredit" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percent Of General VAT Credit</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PercentOfGeneralVatCredit" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PercentOfGeneralVatCredit"/>
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    <link:label id="lab_ck0000932782_DebtPrincipalAmountAndInterestEndingBalance_019b46bd-053c-7d26-be42-1518d8d8a65b_terseLabel_en-US" xlink:label="lab_ck0000932782_DebtPrincipalAmountAndInterestEndingBalance" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">At the end of the year</link:label>
    <link:label id="lab_ck0000932782_DebtPrincipalAmountAndInterestEndingBalance_019b46bd-053c-7c33-8909-d02d9d56302c_verboseLabel_en-US" xlink:label="lab_ck0000932782_DebtPrincipalAmountAndInterestEndingBalance" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ck0000932782_DebtPrincipalAmountAndInterestEndingBalance_label_en-US" xlink:label="lab_ck0000932782_DebtPrincipalAmountAndInterestEndingBalance" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Principal Amount And Interest Ending Balance</link:label>
    <link:label id="lab_ck0000932782_DebtPrincipalAmountAndInterestEndingBalance_documentation_en-US" xlink:label="lab_ck0000932782_DebtPrincipalAmountAndInterestEndingBalance" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt principal amount and interest ending balance.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DebtPrincipalAmountAndInterestEndingBalance" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DebtPrincipalAmountAndInterestEndingBalance"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DebtPrincipalAmountAndInterestEndingBalance" xlink:to="lab_ck0000932782_DebtPrincipalAmountAndInterestEndingBalance" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfLongTermDebtLineItems_019b46bd-0684-7189-b466-3deb0e4cde8e_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfLongTermDebtLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of long term debt [Line Items]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfLongTermDebtLineItems_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfLongTermDebtLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of long term debt [Line Items]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfLongTermDebtLineItems_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfLongTermDebtLineItems" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of debt [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfLongTermDebtLineItems" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfLongTermDebtLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfLongTermDebtLineItems" xlink:to="lab_ck0000932782_DisclosureOfLongTermDebtLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_NoncontrollingInterests_019b46bd-045f-7a92-ba84-7deb69001a45_terseLabel_en-US" xlink:label="lab_ifrs-full_NoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total non-controlling interest</link:label>
    <link:label id="lab_ifrs-full_NoncontrollingInterests_label_en-US" xlink:label="lab_ifrs-full_NoncontrollingInterests" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-controlling interests</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncontrollingInterests" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncontrollingInterests"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_NoncontrollingInterests" xlink:to="lab_ifrs-full_NoncontrollingInterests" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DebtSecuritiesMember_019b46bd-0684-7bf6-aff5-e7843fddf691_terseLabel_en-US" xlink:label="lab_ifrs-full_DebtSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt securities</link:label>
    <link:label id="lab_ifrs-full_DebtSecuritiesMember_label_en-US" xlink:label="lab_ifrs-full_DebtSecuritiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt securities [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DebtSecuritiesMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DebtSecuritiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DebtSecuritiesMember" xlink:to="lab_ifrs-full_DebtSecuritiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_SegmentConsolidationItemsAxis_019b46bd-05e4-7a2a-9821-843b18de7e0d_terseLabel_en-US" xlink:label="lab_ifrs-full_SegmentConsolidationItemsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment consolidation items [axis]</link:label>
    <link:label id="lab_ifrs-full_SegmentConsolidationItemsAxis_label_en-US" xlink:label="lab_ifrs-full_SegmentConsolidationItemsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment consolidation items [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentConsolidationItemsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentConsolidationItemsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_SegmentConsolidationItemsAxis" xlink:to="lab_ifrs-full_SegmentConsolidationItemsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfEmployeeBenefitsExplanatory_019b46bd-05e4-7481-8e25-48d967c25e05_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employee Benefits</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfEmployeeBenefitsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of employee benefits [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfEmployeeBenefitsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfEmployeeBenefitsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfCreditPerformanceExplanatory_019b46bd-05e4-7ac1-90ac-08b59346a8a4_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfCreditPerformanceExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivative Financial Instruments</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfCreditPerformanceExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfCreditPerformanceExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of credit performance [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfCreditPerformanceExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfCreditPerformanceExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of credit performance.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfCreditPerformanceExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfCreditPerformanceExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfCreditPerformanceExplanatory" xlink:to="lab_ck0000932782_DisclosureOfCreditPerformanceExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_currency_AllCurrenciesDomain_019b46bd-05e4-7a44-8b76-f42da681250c_terseLabel_en-US" xlink:label="lab_currency_AllCurrenciesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">All Currencies [Domain]</link:label>
    <link:label id="lab_currency_AllCurrenciesDomain_label_en-US" xlink:label="lab_currency_AllCurrenciesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">All Currencies [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_currency_AllCurrenciesDomain" xlink:href="https://xbrl.sec.gov/currency/2025/currency-2025.xsd#currency_AllCurrenciesDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_currency_AllCurrenciesDomain" xlink:to="lab_currency_AllCurrenciesDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable_019b46bd-05e4-7ca0-9e16-aa385558aa1b_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of disaggregation of revenue from contracts with customers [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of disaggregation of revenue from contracts with customers [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable" xlink:to="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfOperatingSegmentsAbstract_019b46bd-05e4-78a8-8adb-37e24be92f1a_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfOperatingSegmentsAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of operating segments [abstract]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfOperatingSegmentsAbstract_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfOperatingSegmentsAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of operating segments [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOperatingSegmentsAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsAbstract" xlink:to="lab_ifrs-full_DisclosureOfOperatingSegmentsAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsExplanatory_019b46bd-053d-7b34-88be-af180f6f1b8b_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Additional Fair value Disclosure About Plan Assets and Indicate Their Rank</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of fair value measurement of assets [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFairValueMeasurementOfAssetsExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsExplanatory" xlink:to="lab_ifrs-full_DisclosureOfFairValueMeasurementOfAssetsExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AccountsPayableInterCompany_019b46bd-0715-7c0b-b853-8e1e89b6ba5e_terseLabel_en-US" xlink:label="lab_ck0000932782_AccountsPayableInterCompany" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable&#8212;intercompany</link:label>
    <link:label id="lab_ck0000932782_AccountsPayableInterCompany_label_en-US" xlink:label="lab_ck0000932782_AccountsPayableInterCompany" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Payable Inter Company</link:label>
    <link:label id="lab_ck0000932782_AccountsPayableInterCompany_documentation_en-US" xlink:label="lab_ck0000932782_AccountsPayableInterCompany" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Accounts payable inter company.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AccountsPayableInterCompany" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AccountsPayableInterCompany"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AccountsPayableInterCompany" xlink:to="lab_ck0000932782_AccountsPayableInterCompany" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract_019b46bd-05e4-7eeb-98ed-ccf9858e91e7_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of transactions between related parties [abstract]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of transactions between related parties [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract" xlink:to="lab_ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DevelopedDryGasReservesNetPeriodIncreasePercentage_019b46bd-053c-7308-af05-5098e9d69286_terseLabel_en-US" xlink:label="lab_ck0000932782_DevelopedDryGasReservesNetPeriodIncreasePercentage" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of developed dry gas reserves increase</link:label>
    <link:label id="lab_ck0000932782_DevelopedDryGasReservesNetPeriodIncreasePercentage_label_en-US" xlink:label="lab_ck0000932782_DevelopedDryGasReservesNetPeriodIncreasePercentage" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Developed Dry Gas Reserves Net Period Increase Percentage</link:label>
    <link:label id="lab_ck0000932782_DevelopedDryGasReservesNetPeriodIncreasePercentage_documentation_en-US" xlink:label="lab_ck0000932782_DevelopedDryGasReservesNetPeriodIncreasePercentage" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Developed dry gas reserves net period increase percentage.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DevelopedDryGasReservesNetPeriodIncreasePercentage" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DevelopedDryGasReservesNetPeriodIncreasePercentage"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DevelopedDryGasReservesNetPeriodIncreasePercentage" xlink:to="lab_ck0000932782_DevelopedDryGasReservesNetPeriodIncreasePercentage" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PortFacilitiesMember_019b46bd-0715-70e6-9126-9981c03f3871_terseLabel_en-US" xlink:label="lab_ck0000932782_PortFacilitiesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Port facilities</link:label>
    <link:label id="lab_ck0000932782_PortFacilitiesMember_label_en-US" xlink:label="lab_ck0000932782_PortFacilitiesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Port Facilities [Member]</link:label>
    <link:label id="lab_ck0000932782_PortFacilitiesMember_documentation_en-US" xlink:label="lab_ck0000932782_PortFacilitiesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Port Facilities [member].</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PortFacilitiesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PortFacilitiesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PortFacilitiesMember" xlink:to="lab_ck0000932782_PortFacilitiesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_HedgingInstrumentsAxis_019b46bd-0684-7880-a546-e758724ebfb8_terseLabel_en-US" xlink:label="lab_ifrs-full_HedgingInstrumentsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hedging instruments [axis]</link:label>
    <link:label id="lab_ifrs-full_HedgingInstrumentsAxis_label_en-US" xlink:label="lab_ifrs-full_HedgingInstrumentsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Hedging instruments [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_HedgingInstrumentsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_HedgingInstrumentsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_HedgingInstrumentsAxis" xlink:to="lab_ifrs-full_HedgingInstrumentsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_EnergyTransformationMember_019bb784-84ca-7d59-aaa9-4fb039b71d86_terseLabel_en-US" xlink:label="lab_ck0000932782_EnergyTransformationMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Energy Transformation (formerly part of Pemex Industrial Transformation)</link:label>
    <link:label id="lab_ck0000932782_EnergyTransformationMember_label_en-US" xlink:label="lab_ck0000932782_EnergyTransformationMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Energy Transformation [Member]</link:label>
    <link:label id="lab_ck0000932782_EnergyTransformationMember_documentation_en-US" xlink:label="lab_ck0000932782_EnergyTransformationMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Energy Transformation</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EnergyTransformationMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EnergyTransformationMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_EnergyTransformationMember" xlink:to="lab_ck0000932782_EnergyTransformationMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ExportCustomersMember_019b46bd-053c-7d1d-aff9-e4affd30261b_terseLabel_en-US" xlink:label="lab_ck0000932782_ExportCustomersMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Export customers</link:label>
    <link:label id="lab_ck0000932782_ExportCustomersMember_label_en-US" xlink:label="lab_ck0000932782_ExportCustomersMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Export Customers [member]</link:label>
    <link:label id="lab_ck0000932782_ExportCustomersMember_documentation_en-US" xlink:label="lab_ck0000932782_ExportCustomersMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Export customers.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ExportCustomersMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ExportCustomersMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ExportCustomersMember" xlink:to="lab_ck0000932782_ExportCustomersMember" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_IncreaseDecreaseInEstimatedFutureDevelopmentCosts_019b46bd-0715-797f-a892-697b3d95ec4e_terseLabel_en-US" xlink:label="lab_srt_IncreaseDecreaseInEstimatedFutureDevelopmentCosts" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in estimated development costs</link:label>
    <link:label id="lab_srt_IncreaseDecreaseInEstimatedFutureDevelopmentCosts_label_en-US" xlink:label="lab_srt_IncreaseDecreaseInEstimatedFutureDevelopmentCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Estimated Future Development Cost, Increase (Decrease)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_IncreaseDecreaseInEstimatedFutureDevelopmentCosts" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_IncreaseDecreaseInEstimatedFutureDevelopmentCosts"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_IncreaseDecreaseInEstimatedFutureDevelopmentCosts" xlink:to="lab_srt_IncreaseDecreaseInEstimatedFutureDevelopmentCosts" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_WintershallDeaMexicoMember_019d9a65-ffaa-761b-952c-3c248f31a858_terseLabel_en-US" xlink:label="lab_ck0000932782_WintershallDeaMexicoMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Wintershall Dea M&#233;xico</link:label>
    <link:label id="lab_ck0000932782_WintershallDeaMexicoMember_label_en-US" xlink:label="lab_ck0000932782_WintershallDeaMexicoMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Wintershall Dea M&#233;xico [Member]</link:label>
    <link:label id="lab_ck0000932782_WintershallDeaMexicoMember_documentation_en-US" xlink:label="lab_ck0000932782_WintershallDeaMexicoMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Wintershall Dea M&#233;xico</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_WintershallDeaMexicoMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_WintershallDeaMexicoMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_WintershallDeaMexicoMember" xlink:to="lab_ck0000932782_WintershallDeaMexicoMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ResultsOfOperationsProductionCosts_019b46bd-0715-7306-8a7e-d8c70e331dea_totalLabel_en-US" xlink:label="lab_ck0000932782_ResultsOfOperationsProductionCosts" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total production costs</link:label>
    <link:label id="lab_ck0000932782_ResultsOfOperationsProductionCosts_label_en-US" xlink:label="lab_ck0000932782_ResultsOfOperationsProductionCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Results of operations production costs</link:label>
    <link:label id="lab_ck0000932782_ResultsOfOperationsProductionCosts_documentation_en-US" xlink:label="lab_ck0000932782_ResultsOfOperationsProductionCosts" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Results of operations production costs.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ResultsOfOperationsProductionCosts" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ResultsOfOperationsProductionCosts"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ResultsOfOperationsProductionCosts" xlink:to="lab_ck0000932782_ResultsOfOperationsProductionCosts" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BlockThirtyFiveMember_019b46bd-0715-7b88-b039-c5ba3af3fe1f_terseLabel_en-US" xlink:label="lab_ck0000932782_BlockThirtyFiveMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Block 35</link:label>
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    <link:label id="lab_ck0000932782_BlockThirtyFiveMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockThirtyFiveMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block thirty five.</link:label>
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    <link:label id="lab_ck0000932782_RecognizedInOciAndEquityMember_label_en-US" xlink:label="lab_ck0000932782_RecognizedInOciAndEquityMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Recognized in OCI and equity [member]</link:label>
    <link:label id="lab_ck0000932782_RecognizedInOciAndEquityMember_documentation_en-US" xlink:label="lab_ck0000932782_RecognizedInOciAndEquityMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Recognized in OCI and equity.</link:label>
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    <link:label id="lab_ifrs-full_DisclosureOfFairValueOfPlanAssetsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfFairValueOfPlanAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of fair value of plan assets [text block]</link:label>
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    <link:label id="lab_ck0000932782_DisclosureOfForeignCurrencyTranslationExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfForeignCurrencyTranslationExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of foreign currency translation.</link:label>
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    <link:label id="lab_ck0000932782_ArenqueMember_label_en-US" xlink:label="lab_ck0000932782_ArenqueMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Arenque [Member]</link:label>
    <link:label id="lab_ck0000932782_ArenqueMember_documentation_en-US" xlink:label="lab_ck0000932782_ArenqueMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Arenque.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ArenqueMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ArenqueMember"/>
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    <link:label id="lab_ck0000932782_OffshorePlatformsMember_019b46bd-0684-7aa6-8170-96ed304c44b4_terseLabel_en-US" xlink:label="lab_ck0000932782_OffshorePlatformsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Offshore platforms</link:label>
    <link:label id="lab_ck0000932782_OffshorePlatformsMember_label_en-US" xlink:label="lab_ck0000932782_OffshorePlatformsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Offshore Platforms [member]</link:label>
    <link:label id="lab_ck0000932782_OffshorePlatformsMember_documentation_en-US" xlink:label="lab_ck0000932782_OffshorePlatformsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Offshore platforms.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OffshorePlatformsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OffshorePlatformsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OffshorePlatformsMember" xlink:to="lab_ck0000932782_OffshorePlatformsMember" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_DisclosureOfTaxEffectsOfComponentsOfOtherComprehensiveIncomeExplanatoryTableTextBlock_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfTaxEffectsOfComponentsOfOtherComprehensiveIncomeExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of tax effects of components of other comprehensive income Explanatory [Table Text Block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfTaxEffectsOfComponentsOfOtherComprehensiveIncomeExplanatoryTableTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfTaxEffectsOfComponentsOfOtherComprehensiveIncomeExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of tax effects of components of other comprehensive income.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfTaxEffectsOfComponentsOfOtherComprehensiveIncomeExplanatoryTableTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfTaxEffectsOfComponentsOfOtherComprehensiveIncomeExplanatoryTableTextBlock"/>
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    <link:label id="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersExplanatory_019b46bd-053c-75f9-9409-78191fab194b_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Revenue Disaggregation</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDisaggregationOfRevenueFromContractsWithCustomersExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of disaggregation of revenue from contracts with customers [text block]</link:label>
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    <link:label id="lab_srt_PlatformOperatorCryptoAssetAbstract_label_en-US" xlink:label="lab_srt_PlatformOperatorCryptoAssetAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Platform Operator, Crypto Asset [Abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_PlatformOperatorCryptoAssetAbstract" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_PlatformOperatorCryptoAssetAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_PlatformOperatorCryptoAssetAbstract" xlink:to="lab_srt_PlatformOperatorCryptoAssetAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent_019b46bd-05e4-71e8-87ba-74fbcf8eff50_terseLabel_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Controlling interest</link:label>
    <link:label id="lab_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent_label_en-US" xlink:label="lab_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Comprehensive income, attributable to owners of parent</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent"/>
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    <link:label id="lab_ifrs-full_RepairsAndMaintenanceExpense_019b46bd-0684-7c4c-a363-3e1603f5734f_terseLabel_en-US" xlink:label="lab_ifrs-full_RepairsAndMaintenanceExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Conservation and maintenance</link:label>
    <link:label id="lab_ifrs-full_RepairsAndMaintenanceExpense_label_en-US" xlink:label="lab_ifrs-full_RepairsAndMaintenanceExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repairs and maintenance expense</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RepairsAndMaintenanceExpense" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RepairsAndMaintenanceExpense"/>
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    <link:label id="lab_ck0000932782_UnsuccessfulWellsExpenses_019b46bd-0715-758f-b12e-63518eef75ad_terseLabel_en-US" xlink:label="lab_ck0000932782_UnsuccessfulWellsExpenses" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unsuccessful wells</link:label>
    <link:label id="lab_ck0000932782_UnsuccessfulWellsExpenses_label_en-US" xlink:label="lab_ck0000932782_UnsuccessfulWellsExpenses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unsuccessful wells expenses</link:label>
    <link:label id="lab_ck0000932782_UnsuccessfulWellsExpenses_documentation_en-US" xlink:label="lab_ck0000932782_UnsuccessfulWellsExpenses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Unsuccessful wells expenses.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_UnsuccessfulWellsExpenses" xlink:href="ck0000932782-20251231.xsd#ck0000932782_UnsuccessfulWellsExpenses"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_UnsuccessfulWellsExpenses" xlink:to="lab_ck0000932782_UnsuccessfulWellsExpenses" xlink:type="arc" order="1"/>
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    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DescriptionOfAccountingPolicyForIncomeTaxesAndDutiesExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DescriptionOfAccountingPolicyForIncomeTaxesAndDutiesExplanatory"/>
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    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SummaryOfLeaseLiabilitiesRecognizedInStatementOfComprehensiveIncomeTableTextBlock" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SummaryOfLeaseLiabilitiesRecognizedInStatementOfComprehensiveIncomeTableTextBlock"/>
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    <link:label id="lab_ifrs-full_Liabilities_019b46bd-0460-7b25-8dc0-21c0c2115ae1_totalLabel_en-US" xlink:label="lab_ifrs-full_Liabilities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total liabilities</link:label>
    <link:label id="lab_ifrs-full_Liabilities_label_en-US" xlink:label="lab_ifrs-full_Liabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Liabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Liabilities"/>
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    <link:label id="lab_ck0000932782_DomesticBorrowingsNet_documentation_en-US" xlink:label="lab_ck0000932782_DomesticBorrowingsNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Domestic borrowings net.</link:label>
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    <link:label id="lab_ck0000932782_InpexMember_label_en-US" xlink:label="lab_ck0000932782_InpexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inpex [member]</link:label>
    <link:label id="lab_ck0000932782_InpexMember_documentation_en-US" xlink:label="lab_ck0000932782_InpexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Inpex.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InpexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InpexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InpexMember" xlink:to="lab_ck0000932782_InpexMember" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_ActuarialAssumptionOfDiscountRateIncreaseOrDecreaseOfOnePercentageMember_label_en-US" xlink:label="lab_ck0000932782_ActuarialAssumptionOfDiscountRateIncreaseOrDecreaseOfOnePercentageMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Actuarial Assumption Of Discount Rate Increase or Decrease Of One Percentage [Member]</link:label>
    <link:label id="lab_ck0000932782_ActuarialAssumptionOfDiscountRateIncreaseOrDecreaseOfOnePercentageMember_documentation_en-US" xlink:label="lab_ck0000932782_ActuarialAssumptionOfDiscountRateIncreaseOrDecreaseOfOnePercentageMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Actuarial assumption of discount rate increase or decrease of one percentage.</link:label>
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    <link:label id="lab_ck0000932782_TadTdglTomsStotageTerminalsMember_019b46bd-0715-771b-b7db-1605edc5a491_terseLabel_en-US" xlink:label="lab_ck0000932782_TadTdglTomsStotageTerminalsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">TAD, TDGL, TOMS (Storage terminals)</link:label>
    <link:label id="lab_ck0000932782_TadTdglTomsStotageTerminalsMember_label_en-US" xlink:label="lab_ck0000932782_TadTdglTomsStotageTerminalsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">TAD, TDGL, TOMS (Stotage terminals) [member]</link:label>
    <link:label id="lab_ck0000932782_TadTdglTomsStotageTerminalsMember_documentation_en-US" xlink:label="lab_ck0000932782_TadTdglTomsStotageTerminalsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">TAD, TDGL, TOMS (stotage terminals).</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TadTdglTomsStotageTerminalsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TadTdglTomsStotageTerminalsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TadTdglTomsStotageTerminalsMember" xlink:to="lab_ck0000932782_TadTdglTomsStotageTerminalsMember" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_IncreaseInEquityDueToCertificatesOfContributionA_label_en-US" xlink:label="lab_ck0000932782_IncreaseInEquityDueToCertificatesOfContributionA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase In Equity Due To Certificates Of Contribution A</link:label>
    <link:label id="lab_ck0000932782_IncreaseInEquityDueToCertificatesOfContributionA_documentation_en-US" xlink:label="lab_ck0000932782_IncreaseInEquityDueToCertificatesOfContributionA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Increase in equity due to certificates of contribution A.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncreaseInEquityDueToCertificatesOfContributionA" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncreaseInEquityDueToCertificatesOfContributionA"/>
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    <link:label id="lab_ifrs-full_CurrentTaxLiabilitiesCurrent_019b46bd-05e4-7c18-b88c-b629af5abc09_verboseLabel_en-US" xlink:label="lab_ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Income taxes and duties payable</link:label>
    <link:label id="lab_ifrs-full_CurrentTaxLiabilitiesCurrent_019b46bd-05e4-7d7f-b5c0-51276cfb5e20_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Taxes and duties payable</link:label>
    <link:label id="lab_ifrs-full_CurrentTaxLiabilitiesCurrent_label_en-US" xlink:label="lab_ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current tax liabilities, current</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentTaxLiabilitiesCurrent"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:to="lab_ifrs-full_CurrentTaxLiabilitiesCurrent" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_CangrejeraEthyleneComplexMember_label_en-US" xlink:label="lab_ck0000932782_CangrejeraEthyleneComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cangrejera Ethylene Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_CangrejeraEthyleneComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_CangrejeraEthyleneComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cangrejera Ethylene Complex</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CangrejeraEthyleneComplexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CangrejeraEthyleneComplexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CangrejeraEthyleneComplexMember" xlink:to="lab_ck0000932782_CangrejeraEthyleneComplexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfFairValueOfPlanAssetsLineItems_019b46bd-05e4-7f6c-b5c3-9d2b23c8884f_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfFairValueOfPlanAssetsLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of fair value of plan assets [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfFairValueOfPlanAssetsLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfFairValueOfPlanAssetsLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of fair value of plan assets [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfFairValueOfPlanAssetsLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfFairValueOfPlanAssetsLineItems"/>
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    <link:label id="lab_ck0000932782_MorelosEthyleneProcessorComplexMember_label_en-US" xlink:label="lab_ck0000932782_MorelosEthyleneProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Morelos Ethylene Processor Complex [Member]</link:label>
    <link:label id="lab_ck0000932782_MorelosEthyleneProcessorComplexMember_documentation_en-US" xlink:label="lab_ck0000932782_MorelosEthyleneProcessorComplexMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Morelos ethylene processor complex.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MorelosEthyleneProcessorComplexMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MorelosEthyleneProcessorComplexMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MorelosEthyleneProcessorComplexMember" xlink:to="lab_ck0000932782_MorelosEthyleneProcessorComplexMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SevenPointSixNineZeroPercentBondsDueTwoThousandFiftyMember_019b46bd-0715-7beb-b892-ee7bc6f7c824_terseLabel_en-US" xlink:label="lab_ck0000932782_SevenPointSixNineZeroPercentBondsDueTwoThousandFiftyMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">7.690% Bonds due 2050</link:label>
    <link:label id="lab_ck0000932782_SevenPointSixNineZeroPercentBondsDueTwoThousandFiftyMember_label_en-US" xlink:label="lab_ck0000932782_SevenPointSixNineZeroPercentBondsDueTwoThousandFiftyMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Seven Point Six Nine Zero Percent Bonds Due Two Thousand Fifty [Member]</link:label>
    <link:label id="lab_ck0000932782_SevenPointSixNineZeroPercentBondsDueTwoThousandFiftyMember_documentation_en-US" xlink:label="lab_ck0000932782_SevenPointSixNineZeroPercentBondsDueTwoThousandFiftyMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Seven Point Six Nine Zero Percent Bonds Due Two Thousand Fifty [Member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SevenPointSixNineZeroPercentBondsDueTwoThousandFiftyMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SevenPointSixNineZeroPercentBondsDueTwoThousandFiftyMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SevenPointSixNineZeroPercentBondsDueTwoThousandFiftyMember" xlink:to="lab_ck0000932782_SevenPointSixNineZeroPercentBondsDueTwoThousandFiftyMember" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts_019b46bd-053d-7131-84bb-3f994b49e3f8_negatedLabel_en-US" xlink:label="lab_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Future development costs</link:label>
    <link:label id="lab_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts_label_en-US" xlink:label="lab_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Oil and Gas, Standardized Measure, Discounted Future Net Cash Flow, Development Cost</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts" xlink:to="lab_srt_FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AverageSalesPrices1_019b46bd-0715-7e41-9322-89134fa8081a_terseLabel_en-US" xlink:label="lab_ck0000932782_AverageSalesPrices1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average sales price</link:label>
    <link:label id="lab_ck0000932782_AverageSalesPrices1_label_en-US" xlink:label="lab_ck0000932782_AverageSalesPrices1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Average Sales Prices1</link:label>
    <link:label id="lab_ck0000932782_AverageSalesPrices1_documentation_en-US" xlink:label="lab_ck0000932782_AverageSalesPrices1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Average sales prices.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AverageSalesPrices1" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AverageSalesPrices1"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AverageSalesPrices1" xlink:to="lab_ck0000932782_AverageSalesPrices1" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_BorrowingsMaturity_019b46bd-05e5-72c1-9935-fc6ada34e2e6_terseLabel_en-US" xlink:label="lab_ifrs-full_BorrowingsMaturity" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maturity</link:label>
    <link:label id="lab_ifrs-full_BorrowingsMaturity_label_en-US" xlink:label="lab_ifrs-full_BorrowingsMaturity" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Borrowings, maturity</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsMaturity" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsMaturity"/>
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    <link:label id="lab_ck0000932782_InterestRateSwapsPositionOneMember_019b46bd-05e4-710f-89a1-d291d33a0401_terseLabel_en-US" xlink:label="lab_ck0000932782_InterestRateSwapsPositionOneMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Petr&#243;leos Mexicanos pays fixed in U.S. dollar and receives floating in 3-month U.S. dollar SOFR + spread.</link:label>
    <link:label id="lab_ck0000932782_InterestRateSwapsPositionOneMember_label_en-US" xlink:label="lab_ck0000932782_InterestRateSwapsPositionOneMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Rate Swaps Position One [member]</link:label>
    <link:label id="lab_ck0000932782_InterestRateSwapsPositionOneMember_documentation_en-US" xlink:label="lab_ck0000932782_InterestRateSwapsPositionOneMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interest rate swaps position one.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterestRateSwapsPositionOneMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterestRateSwapsPositionOneMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterestRateSwapsPositionOneMember" xlink:to="lab_ck0000932782_InterestRateSwapsPositionOneMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DerivativeMonetaryNotionalAmountMember_019b46bd-05e4-71ab-8017-6c98719994a7_terseLabel_en-US" xlink:label="lab_ck0000932782_DerivativeMonetaryNotionalAmountMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subtotal</link:label>
    <link:label id="lab_ck0000932782_DerivativeMonetaryNotionalAmountMember_label_en-US" xlink:label="lab_ck0000932782_DerivativeMonetaryNotionalAmountMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivative, Monetary Notional Amount [Member]</link:label>
    <link:label id="lab_ck0000932782_DerivativeMonetaryNotionalAmountMember_documentation_en-US" xlink:label="lab_ck0000932782_DerivativeMonetaryNotionalAmountMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivative, Monetary Notional Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DerivativeMonetaryNotionalAmountMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DerivativeMonetaryNotionalAmountMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DerivativeMonetaryNotionalAmountMember" xlink:to="lab_ck0000932782_DerivativeMonetaryNotionalAmountMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OgarrioMagallanesMember_019b46bd-053c-7709-b720-8fa0c02543bb_terseLabel_en-US" xlink:label="lab_ck0000932782_OgarrioMagallanesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ogarrio Magallanes</link:label>
    <link:label id="lab_ck0000932782_OgarrioMagallanesMember_label_en-US" xlink:label="lab_ck0000932782_OgarrioMagallanesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ogarrio Magallanes [Member]</link:label>
    <link:label id="lab_ck0000932782_OgarrioMagallanesMember_documentation_en-US" xlink:label="lab_ck0000932782_OgarrioMagallanesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ogarrio magallanes.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OgarrioMagallanesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OgarrioMagallanesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OgarrioMagallanesMember" xlink:to="lab_ck0000932782_OgarrioMagallanesMember" xlink:type="arc" order="1"/>
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    <link:label id="lab_ifrs-full_CurrentTaxExpenseIncome_label_en-US" xlink:label="lab_ifrs-full_CurrentTaxExpenseIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current tax expense (income)</link:label>
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    <link:label id="lab_ck0000932782_FxForwardsMember_documentation_en-US" xlink:label="lab_ck0000932782_FxForwardsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">FX Forwards.</link:label>
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    <link:label id="lab_ck0000932782_CreditRatingSourceAxis_documentation_en-US" xlink:label="lab_ck0000932782_CreditRatingSourceAxis" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Credit Rating Source [Axis].</link:label>
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    <link:label id="lab_ck0000932782_DebtPrincipalAmountAndInterest_documentation_en-US" xlink:label="lab_ck0000932782_DebtPrincipalAmountAndInterest" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt principal amount and interest.</link:label>
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    <link:label id="lab_ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember_019b46bd-045f-7cae-8b75-174f05d8c0d6_verboseLabel_en-US" xlink:label="lab_ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">2029</link:label>
    <link:label id="lab_ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember_label_en-US" xlink:label="lab_ifrs-full_LaterThanThreeYearsAndNotLaterThanFourYearsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Later than three years and not later than four years [member]</link:label>
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    <link:label id="lab_ck0000932782_DisclosureOfSupplementalGuarantorInformationExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfSupplementalGuarantorInformationExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The disclosure of supplemental guarantor information.</link:label>
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    <link:label id="lab_ck0000932782_DevelopedReservesNetPeriodIncreasePercentage_documentation_en-US" xlink:label="lab_ck0000932782_DevelopedReservesNetPeriodIncreasePercentage" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Developed reserves net period increase percentage.</link:label>
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    <link:label id="lab_ck0000932782_ReceiveJapaneseYenPayUsDollarsMember_019b46bd-0715-723d-ac37-c09ddbd2beab_terseLabel_en-US" xlink:label="lab_ck0000932782_ReceiveJapaneseYenPayUsDollarsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Receive Japanese yen/Pay U.S. dollars</link:label>
    <link:label id="lab_ck0000932782_ReceiveJapaneseYenPayUsDollarsMember_label_en-US" xlink:label="lab_ck0000932782_ReceiveJapaneseYenPayUsDollarsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Receive Japanese yen pay us dollars [member]</link:label>
    <link:label id="lab_ck0000932782_ReceiveJapaneseYenPayUsDollarsMember_documentation_en-US" xlink:label="lab_ck0000932782_ReceiveJapaneseYenPayUsDollarsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Receive Japanese yen pay us dollars [member]</link:label>
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    <link:label id="lab_ifrs-full_ForeignCountriesMember_label_en-US" xlink:label="lab_ifrs-full_ForeignCountriesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign countries [member]</link:label>
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    <link:label id="lab_ck0000932782_InterestIncomeNonOperating_documentation_en-US" xlink:label="lab_ck0000932782_InterestIncomeNonOperating" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interest income non operating.</link:label>
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    <link:label id="lab_ck0000932782_DisclosureOfLongTermDebtAbstract_019b46bd-05e4-7e35-afb4-20528c571518_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfLongTermDebtAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of long term debt [abstract]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfLongTermDebtAbstract_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfLongTermDebtAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of long term debt [abstract]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfLongTermDebtAbstract_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfLongTermDebtAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of long term debt.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfLongTermDebtAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfLongTermDebtAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfLongTermDebtAbstract" xlink:to="lab_ck0000932782_DisclosureOfLongTermDebtAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_TransferOfGoodAndServices_019bd698-57a8-7c23-a0f9-834f35268daa_terseLabel_en-US" xlink:label="lab_ck0000932782_TransferOfGoodAndServices" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Transfer of good and services</link:label>
    <link:label id="lab_ck0000932782_TransferOfGoodAndServices_label_en-US" xlink:label="lab_ck0000932782_TransferOfGoodAndServices" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Transfer Of Good And Services</link:label>
    <link:label id="lab_ck0000932782_TransferOfGoodAndServices_documentation_en-US" xlink:label="lab_ck0000932782_TransferOfGoodAndServices" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Transfer Of Good And Services</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TransferOfGoodAndServices" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TransferOfGoodAndServices"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_TransferOfGoodAndServices" xlink:to="lab_ck0000932782_TransferOfGoodAndServices" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NegativeBudgetFinancialBalance_019b46bd-0684-705c-8b7a-34094d6e8f95_terseLabel_en-US" xlink:label="lab_ck0000932782_NegativeBudgetFinancialBalance" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ck0000932782_NegativeBudgetFinancialBalance_label_en-US" xlink:label="lab_ck0000932782_NegativeBudgetFinancialBalance" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Negative Budget Financial Balance</link:label>
    <link:label id="lab_ck0000932782_NegativeBudgetFinancialBalance_documentation_en-US" xlink:label="lab_ck0000932782_NegativeBudgetFinancialBalance" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Negative budget financial balance.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NegativeBudgetFinancialBalance" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NegativeBudgetFinancialBalance"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NegativeBudgetFinancialBalance" xlink:to="lab_ck0000932782_NegativeBudgetFinancialBalance" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_019b46bd-053c-7632-b107-54cf1eb3e5af_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of subsidiaries [line items]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of subsidiaries [line items]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems" xlink:to="lab_ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_FixedRateMember_019b46bd-0684-7ea8-b42b-c17580bdda46_verboseLabel_en-US" xlink:label="lab_ck0000932782_FixedRateMember" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total fixed rate debt</link:label>
    <link:label id="lab_ck0000932782_FixedRateMember_label_en-US" xlink:label="lab_ck0000932782_FixedRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed rate [member]</link:label>
    <link:label id="lab_ck0000932782_FixedRateMember_documentation_en-US" xlink:label="lab_ck0000932782_FixedRateMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed rate.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FixedRateMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FixedRateMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_FixedRateMember" xlink:to="lab_ck0000932782_FixedRateMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProductsTransferredAtPointInTimeMember_019b46bd-0684-7b38-a1a6-b3267fda5664_terseLabel_en-US" xlink:label="lab_ck0000932782_ProductsTransferredAtPointInTimeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Products transferred at a point in time</link:label>
    <link:label id="lab_ck0000932782_ProductsTransferredAtPointInTimeMember_label_en-US" xlink:label="lab_ck0000932782_ProductsTransferredAtPointInTimeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Products transferred at point in time [member]</link:label>
    <link:label id="lab_ck0000932782_ProductsTransferredAtPointInTimeMember_documentation_en-US" xlink:label="lab_ck0000932782_ProductsTransferredAtPointInTimeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Products transferred at point in time.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProductsTransferredAtPointInTimeMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProductsTransferredAtPointInTimeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProductsTransferredAtPointInTimeMember" xlink:to="lab_ck0000932782_ProductsTransferredAtPointInTimeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReserves_019b46bd-0684-75b4-b23e-d1f587ca1afe_totalLabel_en-US" xlink:label="lab_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReserves" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Standardized measure of discounted future net cash flows</link:label>
    <link:label id="lab_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReserves_label_en-US" xlink:label="lab_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReserves" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Standardized Measure Of Discounted Future Net Cash Flow Relating To Proved Oil And Gas Reserves</link:label>
    <link:label id="lab_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReserves_documentation_en-US" xlink:label="lab_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReserves" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of discounted future accumulated cash inflows relating to proved oil and gas reserves.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReserves" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReserves"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReserves" xlink:to="lab_ck0000932782_StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReserves" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherNonCurrentAssetsOther_019b46bd-0684-76ae-9645-5b9c163b80ee_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherNonCurrentAssetsOther" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:label id="lab_ck0000932782_OtherNonCurrentAssetsOther_label_en-US" xlink:label="lab_ck0000932782_OtherNonCurrentAssetsOther" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Non Current Assets Others</link:label>
    <link:label id="lab_ck0000932782_OtherNonCurrentAssetsOther_documentation_en-US" xlink:label="lab_ck0000932782_OtherNonCurrentAssetsOther" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other non current assets others.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherNonCurrentAssetsOther" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherNonCurrentAssetsOther"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherNonCurrentAssetsOther" xlink:to="lab_ck0000932782_OtherNonCurrentAssetsOther" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NominalFixedRateMember_019d3daf-b129-70b3-9205-0fd76384f648_terseLabel_en-US" xlink:label="lab_ck0000932782_NominalFixedRateMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Nominal fixed rate</link:label>
    <link:label id="lab_ck0000932782_NominalFixedRateMember_label_en-US" xlink:label="lab_ck0000932782_NominalFixedRateMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nominal fixed rate [Member]</link:label>
    <link:label id="lab_ck0000932782_NominalFixedRateMember_documentation_en-US" xlink:label="lab_ck0000932782_NominalFixedRateMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Nominal fixed rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NominalFixedRateMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NominalFixedRateMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NominalFixedRateMember" xlink:to="lab_ck0000932782_NominalFixedRateMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherOperationCostsAndExpenses_019b46bd-045f-713e-97c2-0973d10d89b8_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherOperationCostsAndExpenses" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other operation costs and expenses</link:label>
    <link:label id="lab_ck0000932782_OtherOperationCostsAndExpenses_label_en-US" xlink:label="lab_ck0000932782_OtherOperationCostsAndExpenses" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other operation costs and expenses</link:label>
    <link:label id="lab_ck0000932782_OtherOperationCostsAndExpenses_documentation_en-US" xlink:label="lab_ck0000932782_OtherOperationCostsAndExpenses" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other operation costs and expeneses.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherOperationCostsAndExpenses" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherOperationCostsAndExpenses"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherOperationCostsAndExpenses" xlink:to="lab_ck0000932782_OtherOperationCostsAndExpenses" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DecreaseInOperatingWorkingCapital_019b46bd-05e4-7336-80ce-c43f1d11fadb_terseLabel_en-US" xlink:label="lab_ck0000932782_DecreaseInOperatingWorkingCapital" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Negative working capital</link:label>
    <link:label id="lab_ck0000932782_DecreaseInOperatingWorkingCapital_label_en-US" xlink:label="lab_ck0000932782_DecreaseInOperatingWorkingCapital" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Decrease In Operating Working Capital</link:label>
    <link:label id="lab_ck0000932782_DecreaseInOperatingWorkingCapital_documentation_en-US" xlink:label="lab_ck0000932782_DecreaseInOperatingWorkingCapital" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Decrease in operating working capital.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DecreaseInOperatingWorkingCapital" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DecreaseInOperatingWorkingCapital"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DecreaseInOperatingWorkingCapital" xlink:to="lab_ck0000932782_DecreaseInOperatingWorkingCapital" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_019b46bd-053c-79b8-8577-20e79a29470f_terseLabel_en-US" xlink:label="lab_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Repayment of revolving credit lines</link:label>
    <link:label id="lab_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_019b46bd-053c-7509-9e98-b6bfd2644c1d_negatedLabel_en-US" xlink:label="lab_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Debt payments, principal only</link:label>
    <link:label id="lab_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_label_en-US" xlink:label="lab_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayments of borrowings, classified as financing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:to="lab_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SecuredOvernightFinancingRateSOFRMember_019b46bd-0684-7fb6-b7c7-27f079c4a022_terseLabel_en-US" xlink:label="lab_ck0000932782_SecuredOvernightFinancingRateSOFRMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Secured Overnight Financing Rate (SOFR)</link:label>
    <link:label id="lab_ck0000932782_SecuredOvernightFinancingRateSOFRMember_label_en-US" xlink:label="lab_ck0000932782_SecuredOvernightFinancingRateSOFRMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Secured Overnight Financing Rate (SOFR) [Member]</link:label>
    <link:label id="lab_ck0000932782_SecuredOvernightFinancingRateSOFRMember_documentation_en-US" xlink:label="lab_ck0000932782_SecuredOvernightFinancingRateSOFRMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Secured Overnight Financing Rate (SOFR)</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SecuredOvernightFinancingRateSOFRMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SecuredOvernightFinancingRateSOFRMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SecuredOvernightFinancingRateSOFRMember" xlink:to="lab_ck0000932782_SecuredOvernightFinancingRateSOFRMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InterbankYieldCurves_019b46bd-045f-76d0-bcd8-6abf3251b7d4_terseLabel_en-US" xlink:label="lab_ck0000932782_InterbankYieldCurves" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sensitivity Debt</link:label>
    <link:label id="lab_ck0000932782_InterbankYieldCurves_label_en-US" xlink:label="lab_ck0000932782_InterbankYieldCurves" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interbank Yield Curves</link:label>
    <link:label id="lab_ck0000932782_InterbankYieldCurves_documentation_en-US" xlink:label="lab_ck0000932782_InterbankYieldCurves" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interbank Yield Curves</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterbankYieldCurves" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterbankYieldCurves"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterbankYieldCurves" xlink:to="lab_ck0000932782_InterbankYieldCurves" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_OtherIncomeTaxesDomain_019b46bd-0684-7c27-bc0f-1762f708d614_terseLabel_en-US" xlink:label="lab_ck0000932782_OtherIncomeTaxesDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Income Taxes [Domain]</link:label>
    <link:label id="lab_ck0000932782_OtherIncomeTaxesDomain_label_en-US" xlink:label="lab_ck0000932782_OtherIncomeTaxesDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Income Taxes [Domain]</link:label>
    <link:label id="lab_ck0000932782_OtherIncomeTaxesDomain_documentation_en-US" xlink:label="lab_ck0000932782_OtherIncomeTaxesDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Income Taxes [Domain]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherIncomeTaxesDomain" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherIncomeTaxesDomain"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherIncomeTaxesDomain" xlink:to="lab_ck0000932782_OtherIncomeTaxesDomain" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PercentageVatTaxRateForCertainActivitiesWithIncentives_019b46bd-053c-7653-a58a-64db1d6383fe_terseLabel_en-US" xlink:label="lab_ck0000932782_PercentageVatTaxRateForCertainActivitiesWithIncentives" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage VAT tax rate for certain activities with incentives</link:label>
    <link:label id="lab_ck0000932782_PercentageVatTaxRateForCertainActivitiesWithIncentives_label_en-US" xlink:label="lab_ck0000932782_PercentageVatTaxRateForCertainActivitiesWithIncentives" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage VAT tax rate for certain activities with incentives</link:label>
    <link:label id="lab_ck0000932782_PercentageVatTaxRateForCertainActivitiesWithIncentives_documentation_en-US" xlink:label="lab_ck0000932782_PercentageVatTaxRateForCertainActivitiesWithIncentives" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage VAT tax rate for certain activities with incentives</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PercentageVatTaxRateForCertainActivitiesWithIncentives" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PercentageVatTaxRateForCertainActivitiesWithIncentives"/>
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    <link:label id="lab_ck0000932782_ConversionFactorForDryGasToBarrelsOfOil_documentation_en-US" xlink:label="lab_ck0000932782_ConversionFactorForDryGasToBarrelsOfOil" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Conversion Factor for Dry Gas to Barrels of Oil</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ConversionFactorForDryGasToBarrelsOfOil" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ConversionFactorForDryGasToBarrelsOfOil"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ConversionFactorForDryGasToBarrelsOfOil" xlink:to="lab_ck0000932782_ConversionFactorForDryGasToBarrelsOfOil" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsTable_019b46bd-053c-7758-a76a-53da706f7449_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about hedging instruments [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about hedging instruments [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutHedgingInstrumentsTable"/>
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    <link:label id="lab_ck0000932782_PremiumGasolineMember_019b46bd-053c-7b21-a94f-67f1cffd9e43_terseLabel_en-US" xlink:label="lab_ck0000932782_PremiumGasolineMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Premium Gasoline</link:label>
    <link:label id="lab_ck0000932782_PremiumGasolineMember_label_en-US" xlink:label="lab_ck0000932782_PremiumGasolineMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Premium Gasoline [member]</link:label>
    <link:label id="lab_ck0000932782_PremiumGasolineMember_documentation_en-US" xlink:label="lab_ck0000932782_PremiumGasolineMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Premium gasoline.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PremiumGasolineMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PremiumGasolineMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PremiumGasolineMember" xlink:to="lab_ck0000932782_PremiumGasolineMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RetainedEarningsProfitLossForReportingPeriodMember_019b46bd-0715-7c3f-8bb1-979f2b811e1b_terseLabel_en-US" xlink:label="lab_ifrs-full_RetainedEarningsProfitLossForReportingPeriodMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accumulated deficit, for the year</link:label>
    <link:label id="lab_ifrs-full_RetainedEarningsProfitLossForReportingPeriodMember_label_en-US" xlink:label="lab_ifrs-full_RetainedEarningsProfitLossForReportingPeriodMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retained earnings, profit (loss) for reporting period [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RetainedEarningsProfitLossForReportingPeriodMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RetainedEarningsProfitLossForReportingPeriodMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RetainedEarningsProfitLossForReportingPeriodMember" xlink:to="lab_ifrs-full_RetainedEarningsProfitLossForReportingPeriodMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_RevolvingCreditFacilityOutstanding_019b46bd-05e4-7560-830f-332905bd90cb_terseLabel_en-US" xlink:label="lab_ck0000932782_RevolvingCreditFacilityOutstanding" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Outstanding of revolving credit lines</link:label>
    <link:label id="lab_ck0000932782_RevolvingCreditFacilityOutstanding_label_en-US" xlink:label="lab_ck0000932782_RevolvingCreditFacilityOutstanding" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revolving Credit Facility Outstanding</link:label>
    <link:label id="lab_ck0000932782_RevolvingCreditFacilityOutstanding_documentation_en-US" xlink:label="lab_ck0000932782_RevolvingCreditFacilityOutstanding" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Revolving credit facility outstanding.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RevolvingCreditFacilityOutstanding" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RevolvingCreditFacilityOutstanding"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_RevolvingCreditFacilityOutstanding" xlink:to="lab_ck0000932782_RevolvingCreditFacilityOutstanding" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory_019b46bd-0715-7098-af3c-ccb281e569cb_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Detailed Information About Property, Plant and Equipment</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of detailed information about property, plant and equipment [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory" xlink:to="lab_ifrs-full_DisclosureOfDetailedInformationAboutPropertyPlantAndEquipmentExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_LicencesMember_019b46bd-0715-7ffa-8906-91021d0fcaa3_terseLabel_en-US" xlink:label="lab_ifrs-full_LicencesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Licenses</link:label>
    <link:label id="lab_ifrs-full_LicencesMember_label_en-US" xlink:label="lab_ifrs-full_LicencesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Licences [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_LicencesMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LicencesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_LicencesMember" xlink:to="lab_ifrs-full_LicencesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_BorrowingsInterestRate_019b46bd-0715-7997-8459-eeaf822246a1_terseLabel_en-US" xlink:label="lab_ifrs-full_BorrowingsInterestRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest rate</link:label>
    <link:label id="lab_ifrs-full_BorrowingsInterestRate_019b46bd-0715-7660-becd-02cc1d351b3d_verboseLabel_en-US" xlink:label="lab_ifrs-full_BorrowingsInterestRate" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Security</link:label>
    <link:label id="lab_ifrs-full_BorrowingsInterestRate_label_en-US" xlink:label="lab_ifrs-full_BorrowingsInterestRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Borrowings, interest rate</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BorrowingsInterestRate" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_BorrowingsInterestRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_BorrowingsInterestRate" xlink:to="lab_ifrs-full_BorrowingsInterestRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities_019b46bd-0715-7497-88e0-9dbbbc49ed93_totalLabel_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash flows (used in) investing activities</link:label>
    <link:label id="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities_label_en-US" xlink:label="lab_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash flows from (used in) investing activities</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities"/>
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    <link:label id="lab_ck0000932782_NegativeTaxEffectDueToHigherIncome_label_en-US" xlink:label="lab_ck0000932782_NegativeTaxEffectDueToHigherIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Negative Tax Effect Due To Higher Income</link:label>
    <link:label id="lab_ck0000932782_NegativeTaxEffectDueToHigherIncome_documentation_en-US" xlink:label="lab_ck0000932782_NegativeTaxEffectDueToHigherIncome" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Negative Tax Effect Due To Higher Income.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NegativeTaxEffectDueToHigherIncome" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NegativeTaxEffectDueToHigherIncome"/>
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    <link:label id="lab_ck0000932782_EstimatedFutureContractPaymentsNextTwelveMonths_019b46bd-053c-7382-9ffa-d3b1e7b0e994_terseLabel_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPaymentsNextTwelveMonths" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2026</link:label>
    <link:label id="lab_ck0000932782_EstimatedFutureContractPaymentsNextTwelveMonths_label_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPaymentsNextTwelveMonths" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Estimated future contract payments next twelve months</link:label>
    <link:label id="lab_ck0000932782_EstimatedFutureContractPaymentsNextTwelveMonths_documentation_en-US" xlink:label="lab_ck0000932782_EstimatedFutureContractPaymentsNextTwelveMonths" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Estimated future contract payments next twelve months.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EstimatedFutureContractPaymentsNextTwelveMonths" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EstimatedFutureContractPaymentsNextTwelveMonths"/>
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    <link:label id="lab_ck0000932782_DisclosureOfQuantitativeInformationAboutRightOfUseAssetsRollForward_019b46bd-053c-7e30-a803-e15324e7b0e0_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfQuantitativeInformationAboutRightOfUseAssetsRollForward" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of quantitative information about right-of-use assets [Roll Forward]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfQuantitativeInformationAboutRightOfUseAssetsRollForward_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfQuantitativeInformationAboutRightOfUseAssetsRollForward" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of quantitative information about right-of-use assets [Roll Forward]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfQuantitativeInformationAboutRightOfUseAssetsRollForward_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfQuantitativeInformationAboutRightOfUseAssetsRollForward" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of quantitative information about right-of-use assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfQuantitativeInformationAboutRightOfUseAssetsRollForward" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfQuantitativeInformationAboutRightOfUseAssetsRollForward"/>
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    <link:label id="lab_ck0000932782_EuroMember_019b46bd-0715-7260-a4fa-852132d713d7_terseLabel_en-US" xlink:label="lab_ck0000932782_EuroMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Euro</link:label>
    <link:label id="lab_ck0000932782_EuroMember_label_en-US" xlink:label="lab_ck0000932782_EuroMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Euro [member]</link:label>
    <link:label id="lab_ck0000932782_EuroMember_documentation_en-US" xlink:label="lab_ck0000932782_EuroMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Euro [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EuroMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EuroMember"/>
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    <link:label id="lab_ck0000932782_OtherIncomeTaxesAndDuties_019b46bd-053c-770f-bddf-9cb9d54273b9_totalLabel_en-US" xlink:label="lab_ck0000932782_OtherIncomeTaxesAndDuties" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_ck0000932782_OtherIncomeTaxesAndDuties_label_en-US" xlink:label="lab_ck0000932782_OtherIncomeTaxesAndDuties" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Income Taxes and Duties</link:label>
    <link:label id="lab_ck0000932782_OtherIncomeTaxesAndDuties_documentation_en-US" xlink:label="lab_ck0000932782_OtherIncomeTaxesAndDuties" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Income Taxes and Duties</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_OtherIncomeTaxesAndDuties" xlink:href="ck0000932782-20251231.xsd#ck0000932782_OtherIncomeTaxesAndDuties"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_OtherIncomeTaxesAndDuties" xlink:to="lab_ck0000932782_OtherIncomeTaxesAndDuties" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DieselMember_019b46bd-0715-77d0-9c09-8748801b0576_terseLabel_en-US" xlink:label="lab_ck0000932782_DieselMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Diesel</link:label>
    <link:label id="lab_ck0000932782_DieselMember_label_en-US" xlink:label="lab_ck0000932782_DieselMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Diesel member</link:label>
    <link:label id="lab_ck0000932782_DieselMember_documentation_en-US" xlink:label="lab_ck0000932782_DieselMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Diesel.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DieselMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DieselMember"/>
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    <link:label id="lab_ck0000932782_PetroleumCokeMember_019b46bd-0684-7729-9333-228c466c4267_terseLabel_en-US" xlink:label="lab_ck0000932782_PetroleumCokeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Petroleum Coke</link:label>
    <link:label id="lab_ck0000932782_PetroleumCokeMember_label_en-US" xlink:label="lab_ck0000932782_PetroleumCokeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Petroleum coke [member]</link:label>
    <link:label id="lab_ck0000932782_PetroleumCokeMember_documentation_en-US" xlink:label="lab_ck0000932782_PetroleumCokeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Petroleum coke.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PetroleumCokeMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PetroleumCokeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PetroleumCokeMember" xlink:to="lab_ck0000932782_PetroleumCokeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_EmployeeBenefitsExpense_019b46bd-05e5-77e7-898a-8090a1536150_terseLabel_en-US" xlink:label="lab_ifrs-full_EmployeeBenefitsExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employee benefits</link:label>
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    <link:label id="lab_ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill_019b46bd-0715-78c3-b2a2-b2a5065148c7_terseLabel_en-US" xlink:label="lab_ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization</link:label>
    <link:label id="lab_ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill_label_en-US" xlink:label="lab_ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortisation, intangible assets other than goodwill</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill" xlink:to="lab_ifrs-full_AmortisationIntangibleAssetsOtherThanGoodwill" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_CurrentAssets_019b46bd-0715-7ee5-84fc-5763ce95cfe5_totalLabel_en-US" xlink:label="lab_ifrs-full_CurrentAssets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total current assets</link:label>
    <link:label id="lab_ifrs-full_CurrentAssets_019b46bd-0715-709f-a714-a19bb933809e_terseLabel_en-US" xlink:label="lab_ifrs-full_CurrentAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total current assets</link:label>
    <link:label id="lab_ifrs-full_CurrentAssets_label_en-US" xlink:label="lab_ifrs-full_CurrentAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_CurrentAssets" xlink:to="lab_ifrs-full_CurrentAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PemexExplorationAndProductionMember_019b46bd-05e4-7ea3-b66f-474afae7b6d2_terseLabel_en-US" xlink:label="lab_ck0000932782_PemexExplorationAndProductionMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exploration and Extraction (formerly Pemex Exploration and Production)</link:label>
    <link:label id="lab_ck0000932782_PemexExplorationAndProductionMember_label_en-US" xlink:label="lab_ck0000932782_PemexExplorationAndProductionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pemex Exploration And Production [member]</link:label>
    <link:label id="lab_ck0000932782_PemexExplorationAndProductionMember_documentation_en-US" xlink:label="lab_ck0000932782_PemexExplorationAndProductionMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Pemex exploration and production.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PemexExplorationAndProductionMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PemexExplorationAndProductionMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PemexExplorationAndProductionMember" xlink:to="lab_ck0000932782_PemexExplorationAndProductionMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_IncreaseDecreaseToInterCompanyInvesting_019b46bd-0684-7bcd-8615-8290dc115811_terseLabel_en-US" xlink:label="lab_ck0000932782_IncreaseDecreaseToInterCompanyInvesting" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">(Increase) decrease due to Inter-company investing</link:label>
    <link:label id="lab_ck0000932782_IncreaseDecreaseToInterCompanyInvesting_label_en-US" xlink:label="lab_ck0000932782_IncreaseDecreaseToInterCompanyInvesting" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase Decrease To Inter Company Investing</link:label>
    <link:label id="lab_ck0000932782_IncreaseDecreaseToInterCompanyInvesting_documentation_en-US" xlink:label="lab_ck0000932782_IncreaseDecreaseToInterCompanyInvesting" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Increase decrease to inter company investing.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_IncreaseDecreaseToInterCompanyInvesting" xlink:href="ck0000932782-20251231.xsd#ck0000932782_IncreaseDecreaseToInterCompanyInvesting"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_IncreaseDecreaseToInterCompanyInvesting" xlink:to="lab_ck0000932782_IncreaseDecreaseToInterCompanyInvesting" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfOperatingSegmentsTable_019b46bd-0715-7e9a-9d50-80f5a5b2723e_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfOperatingSegmentsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of operating segments [table]</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfOperatingSegmentsTable_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfOperatingSegmentsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of operating segments [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DisclosureOfOperatingSegmentsTable" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DisclosureOfOperatingSegmentsTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_DisclosureOfOperatingSegmentsTable" xlink:to="lab_ifrs-full_DisclosureOfOperatingSegmentsTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfProvedReserveRollforwardExplanatory_019b46bd-05e4-732a-be35-134c0a8777a0_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfProvedReserveRollforwardExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of Proved Developed and Undeveloped Reserve</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfProvedReserveRollforwardExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfProvedReserveRollforwardExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Proved Reserve Rollforward [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfProvedReserveRollforwardExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfProvedReserveRollforwardExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Proved Reserve Rollforward [text block]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfProvedReserveRollforwardExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfProvedReserveRollforwardExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfProvedReserveRollforwardExplanatory" xlink:to="lab_ck0000932782_DisclosureOfProvedReserveRollforwardExplanatory" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_DisclosureOfLongTermDebtTable_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfLongTermDebtTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Long Term Debt [Table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfLongTermDebtTable_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfLongTermDebtTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Long Term Debt</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfLongTermDebtTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfLongTermDebtTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfLongTermDebtTable" xlink:to="lab_ck0000932782_DisclosureOfLongTermDebtTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NinePointFiveZeroZeroPercentGuaranteedBondsDueTwoThousandTwentySevenmemberMember_019b46bd-0715-7c46-962c-798d5f0ea89c_terseLabel_en-US" xlink:label="lab_ck0000932782_NinePointFiveZeroZeroPercentGuaranteedBondsDueTwoThousandTwentySevenmemberMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">9.500% Guaranteed Bonds due 2027</link:label>
    <link:label id="lab_ck0000932782_NinePointFiveZeroZeroPercentGuaranteedBondsDueTwoThousandTwentySevenmemberMember_label_en-US" xlink:label="lab_ck0000932782_NinePointFiveZeroZeroPercentGuaranteedBondsDueTwoThousandTwentySevenmemberMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nine Point Five Zero Zero Percent Guaranteed Bonds Due Two Thousand Twenty Seven member [Member]</link:label>
    <link:label id="lab_ck0000932782_NinePointFiveZeroZeroPercentGuaranteedBondsDueTwoThousandTwentySevenmemberMember_documentation_en-US" xlink:label="lab_ck0000932782_NinePointFiveZeroZeroPercentGuaranteedBondsDueTwoThousandTwentySevenmemberMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Nine point five zero zero percent guaranteed bonds due two thousand twenty seven.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NinePointFiveZeroZeroPercentGuaranteedBondsDueTwoThousandTwentySevenmemberMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NinePointFiveZeroZeroPercentGuaranteedBondsDueTwoThousandTwentySevenmemberMember"/>
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    <link:label id="lab_ck0000932782_CreditRatingSourceDomain_019b46bd-053c-78d5-812c-0b74ded27638_terseLabel_en-US" xlink:label="lab_ck0000932782_CreditRatingSourceDomain" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Rating Source [domain]</link:label>
    <link:label id="lab_ck0000932782_CreditRatingSourceDomain_label_en-US" xlink:label="lab_ck0000932782_CreditRatingSourceDomain" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Rating Source [domain]</link:label>
    <link:label id="lab_ck0000932782_CreditRatingSourceDomain_documentation_en-US" xlink:label="lab_ck0000932782_CreditRatingSourceDomain" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Credit Rating Source [Domain].</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CreditRatingSourceDomain" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CreditRatingSourceDomain"/>
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    <link:label id="lab_ck0000932782_FinanceCostsNet_019b46bd-0684-711f-a05d-76f4f3612385_negatedTerseLabel_en-US" xlink:label="lab_ck0000932782_FinanceCostsNet" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Financing cost, net</link:label>
    <link:label id="lab_ck0000932782_FinanceCostsNet_label_en-US" xlink:label="lab_ck0000932782_FinanceCostsNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Costs Net</link:label>
    <link:label id="lab_ck0000932782_FinanceCostsNet_documentation_en-US" xlink:label="lab_ck0000932782_FinanceCostsNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Finance costs net.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_FinanceCostsNet" xlink:href="ck0000932782-20251231.xsd#ck0000932782_FinanceCostsNet"/>
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    <link:label id="lab_ck0000932782_DisclosureOfOilAndGasProducingActivitiesTable_019b46bd-053d-7eaf-a8e7-f4f78ac29cec_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfOilAndGasProducingActivitiesTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure Of Oil And Gas Producing Activities [table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfOilAndGasProducingActivitiesTable_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfOilAndGasProducingActivitiesTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Oil And Gas Producing Activities [table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfOilAndGasProducingActivitiesTable_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfOilAndGasProducingActivitiesTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure Of Oil And Gas Producing Activities [table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfOilAndGasProducingActivitiesTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfOilAndGasProducingActivitiesTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfOilAndGasProducingActivitiesTable" xlink:to="lab_ck0000932782_DisclosureOfOilAndGasProducingActivitiesTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_MaterialsAndSuppliesMember_019b46bd-0715-7b2a-bf8d-a65676a64d08_terseLabel_en-US" xlink:label="lab_ck0000932782_MaterialsAndSuppliesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Materials in transit</link:label>
    <link:label id="lab_ck0000932782_MaterialsAndSuppliesMember_label_en-US" xlink:label="lab_ck0000932782_MaterialsAndSuppliesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Materials And Supplies [member]</link:label>
    <link:label id="lab_ck0000932782_MaterialsAndSuppliesMember_documentation_en-US" xlink:label="lab_ck0000932782_MaterialsAndSuppliesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Materials and supplies.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MaterialsAndSuppliesMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MaterialsAndSuppliesMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MaterialsAndSuppliesMember" xlink:to="lab_ck0000932782_MaterialsAndSuppliesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DutiesAndIncomeTaxesPaidRefund_019b46bd-05e4-708d-9c8f-e1389d2f1a40_terseLabel_en-US" xlink:label="lab_ck0000932782_DutiesAndIncomeTaxesPaidRefund" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Duties and income tax paid</link:label>
    <link:label id="lab_ck0000932782_DutiesAndIncomeTaxesPaidRefund_label_en-US" xlink:label="lab_ck0000932782_DutiesAndIncomeTaxesPaidRefund" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Duties And Income Taxes Paid Refund</link:label>
    <link:label id="lab_ck0000932782_DutiesAndIncomeTaxesPaidRefund_documentation_en-US" xlink:label="lab_ck0000932782_DutiesAndIncomeTaxesPaidRefund" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Duties And Income Taxes Paid Refund.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DutiesAndIncomeTaxesPaidRefund" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DutiesAndIncomeTaxesPaidRefund"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DutiesAndIncomeTaxesPaidRefund" xlink:to="lab_ck0000932782_DutiesAndIncomeTaxesPaidRefund" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_SegmentsAxis_019b46bd-05e4-76ee-85c8-fa34d635789a_terseLabel_en-US" xlink:label="lab_ifrs-full_SegmentsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segments [axis]</link:label>
    <link:label id="lab_ifrs-full_SegmentsAxis_label_en-US" xlink:label="lab_ifrs-full_SegmentsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segments [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_SegmentsAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_SegmentsAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_SegmentsAxis" xlink:to="lab_ifrs-full_SegmentsAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_TypesOfRisksAxis_019b46bd-0715-70e6-84f2-ed903996b840_terseLabel_en-US" xlink:label="lab_ifrs-full_TypesOfRisksAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Types of risks [axis]</link:label>
    <link:label id="lab_ifrs-full_TypesOfRisksAxis_label_en-US" xlink:label="lab_ifrs-full_TypesOfRisksAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Types of risks [axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TypesOfRisksAxis" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TypesOfRisksAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_TypesOfRisksAxis" xlink:to="lab_ifrs-full_TypesOfRisksAxis" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_CostOfSalesExcludingImpairments_label_en-US" xlink:label="lab_ck0000932782_CostOfSalesExcludingImpairments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of sales excluding impairments</link:label>
    <link:label id="lab_ck0000932782_CostOfSalesExcludingImpairments_documentation_en-US" xlink:label="lab_ck0000932782_CostOfSalesExcludingImpairments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cost of sales excluding impairments.</link:label>
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    <link:label id="lab_ck0000932782_PaymentsForLegalSettlements1_019badac-9b3b-7eac-8f72-de3bbc47a798_terseLabel_en-US" xlink:label="lab_ck0000932782_PaymentsForLegalSettlements1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payments for legal settlements</link:label>
    <link:label id="lab_ck0000932782_PaymentsForLegalSettlements1_label_en-US" xlink:label="lab_ck0000932782_PaymentsForLegalSettlements1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments For Legal Settlements1</link:label>
    <link:label id="lab_ck0000932782_PaymentsForLegalSettlements1_documentation_en-US" xlink:label="lab_ck0000932782_PaymentsForLegalSettlements1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Payments For Legal Settlements1</link:label>
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    <link:label id="lab_ck0000932782_DerivativesNotDesignatedAsHedgesMember_019b46bd-0684-7230-8de5-00f7263ab3bd_terseLabel_en-US" xlink:label="lab_ck0000932782_DerivativesNotDesignatedAsHedgesMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Derivatives not designated as hedges</link:label>
    <link:label id="lab_ck0000932782_DerivativesNotDesignatedAsHedgesMember_label_en-US" xlink:label="lab_ck0000932782_DerivativesNotDesignatedAsHedgesMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Derivatives not designated as hedges [member]</link:label>
    <link:label id="lab_ck0000932782_DerivativesNotDesignatedAsHedgesMember_documentation_en-US" xlink:label="lab_ck0000932782_DerivativesNotDesignatedAsHedgesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Derivatives not designated as hedges [member]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DerivativesNotDesignatedAsHedgesMember" xlink:to="lab_ck0000932782_DerivativesNotDesignatedAsHedgesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InterestPaidFromLeaseLiabilities_019b46bd-0715-7e5b-9cb4-4c6412389d30_negatedLabel_en-US" xlink:label="lab_ck0000932782_InterestPaidFromLeaseLiabilities" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Interests paid</link:label>
    <link:label id="lab_ck0000932782_InterestPaidFromLeaseLiabilities_label_en-US" xlink:label="lab_ck0000932782_InterestPaidFromLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Paid From Lease Liabilities</link:label>
    <link:label id="lab_ck0000932782_InterestPaidFromLeaseLiabilities_documentation_en-US" xlink:label="lab_ck0000932782_InterestPaidFromLeaseLiabilities" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interest paid from lease liabilities.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterestPaidFromLeaseLiabilities" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterestPaidFromLeaseLiabilities"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterestPaidFromLeaseLiabilities" xlink:to="lab_ck0000932782_InterestPaidFromLeaseLiabilities" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_019b46bd-05e4-7220-963b-24cd8c4265f0_terseLabel_en-US" xlink:label="lab_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financial assets at amortized cost</link:label>
    <link:label id="lab_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember_label_en-US" xlink:label="lab_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial assets at amortised cost, category [member]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember" xlink:to="lab_ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProfitSharingDutyNet_019b46bd-05e4-7623-9f9d-e16030aa8c29_verboseLabel_en-US" xlink:label="lab_ck0000932782_ProfitSharingDutyNet" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Profit sharing duty, net</link:label>
    <link:label id="lab_ck0000932782_ProfitSharingDutyNet_019b46bd-05e4-7422-a1d7-1d4c3b77e725_terseLabel_en-US" xlink:label="lab_ck0000932782_ProfitSharingDutyNet" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Profit-sharing Duty</link:label>
    <link:label id="lab_ck0000932782_ProfitSharingDutyNet_019b46bd-05e4-7a83-ad37-4eaa6dd368d9_totalLabel_en-US" xlink:label="lab_ck0000932782_ProfitSharingDutyNet" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">DUC-Profit-sharing duty expense</link:label>
    <link:label id="lab_ck0000932782_ProfitSharingDutyNet_label_en-US" xlink:label="lab_ck0000932782_ProfitSharingDutyNet" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit- sharing duty, net</link:label>
    <link:label id="lab_ck0000932782_ProfitSharingDutyNet_documentation_en-US" xlink:label="lab_ck0000932782_ProfitSharingDutyNet" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Profit- sharing duty, net.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProfitSharingDutyNet" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProfitSharingDutyNet"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProfitSharingDutyNet" xlink:to="lab_ck0000932782_ProfitSharingDutyNet" xlink:type="arc" order="1"/>
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    <link:label id="lab_ck0000932782_DisclosureOfMaturitiesOfLongTermDebtPrincipalOutstandingAndAccruedInterestExplanatoryTableTextBlock_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfMaturitiesOfLongTermDebtPrincipalOutstandingAndAccruedInterestExplanatoryTableTextBlock" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The entire disclosure of maturities of long term debt principal outstanding and accrued interest explanatory.</link:label>
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    <link:label id="lab_ck0000932782_TransportationAndStorageEquipmentMember_019b46bd-0715-788b-a1de-d87119277a6a_terseLabel_en-US" xlink:label="lab_ck0000932782_TransportationAndStorageEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Transportation and storage equipment</link:label>
    <link:label id="lab_ck0000932782_TransportationAndStorageEquipmentMember_label_en-US" xlink:label="lab_ck0000932782_TransportationAndStorageEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Transportation And Storage Equipment [Member]</link:label>
    <link:label id="lab_ck0000932782_TransportationAndStorageEquipmentMember_documentation_en-US" xlink:label="lab_ck0000932782_TransportationAndStorageEquipmentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Transportation and storage equipment [Member].</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_TransportationAndStorageEquipmentMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_TransportationAndStorageEquipmentMember"/>
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    <link:label id="lab_ck0000932782_DisclosureOfComponentsOfDeferredIncomeExplanatory_019b46bd-05e4-7a67-84cd-99d11e425309_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfComponentsOfDeferredIncomeExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Principal Factors Generating Deferred Income Tax</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfComponentsOfDeferredIncomeExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfComponentsOfDeferredIncomeExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure Of Components Of Deferred Income [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfComponentsOfDeferredIncomeExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfComponentsOfDeferredIncomeExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The disclosure of components of deferred income.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfComponentsOfDeferredIncomeExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfComponentsOfDeferredIncomeExplanatory"/>
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    <link:label id="lab_ifrs-full_NetDeferredTaxAssets_019b46bd-053c-7121-9578-c4e56eb309de_totalLabel_en-US" xlink:label="lab_ifrs-full_NetDeferredTaxAssets" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net long-term deferred income tax asset</link:label>
    <link:label id="lab_ifrs-full_NetDeferredTaxAssets_label_en-US" xlink:label="lab_ifrs-full_NetDeferredTaxAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net deferred tax assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NetDeferredTaxAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NetDeferredTaxAssets"/>
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    <link:label id="lab_ck0000932782_DepreciationToRightofuseAssets_019b46bd-0715-7c2c-988c-4da7c69bbcbf_negatedLabel_en-US" xlink:label="lab_ck0000932782_DepreciationToRightofuseAssets" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Depreciation of the year</link:label>
    <link:label id="lab_ck0000932782_DepreciationToRightofuseAssets_label_en-US" xlink:label="lab_ck0000932782_DepreciationToRightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation To Rightofuse Assets</link:label>
    <link:label id="lab_ck0000932782_DepreciationToRightofuseAssets_documentation_en-US" xlink:label="lab_ck0000932782_DepreciationToRightofuseAssets" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Depreciation to right of use assets.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DepreciationToRightofuseAssets" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DepreciationToRightofuseAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DepreciationToRightofuseAssets" xlink:to="lab_ck0000932782_DepreciationToRightofuseAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LogisticsSegmentMember_019b46bd-053d-7952-918b-1889ec1c4ede_terseLabel_en-US" xlink:label="lab_ck0000932782_LogisticsSegmentMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Logistics</link:label>
    <link:label id="lab_ck0000932782_LogisticsSegmentMember_label_en-US" xlink:label="lab_ck0000932782_LogisticsSegmentMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Logistics Segment [member]</link:label>
    <link:label id="lab_ck0000932782_LogisticsSegmentMember_documentation_en-US" xlink:label="lab_ck0000932782_LogisticsSegmentMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Logistics segment.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LogisticsSegmentMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LogisticsSegmentMember"/>
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    <link:label id="lab_dei_AmendmentFlag_019b46bd-0715-7804-adbb-14c234e6c73e_terseLabel_en-US" xlink:label="lab_dei_AmendmentFlag" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amendment Flag</link:label>
    <link:label id="lab_dei_AmendmentFlag_label_en-US" xlink:label="lab_dei_AmendmentFlag" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amendment Flag</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
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    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory_019b46bd-0715-7508-8671-a7ab06bc4f4e_terseLabel_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Employee benefits</link:label>
    <link:label id="lab_ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DescriptionOfAccountingPolicyForEmployeeBenefitsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Description of accounting policy for employee benefits [text block]</link:label>
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    <link:label id="lab_ck0000932782_EliminationsAndReconcilingItemsMember_documentation_en-US" xlink:label="lab_ck0000932782_EliminationsAndReconcilingItemsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Eliminations And Reconciling Items</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_EliminationsAndReconcilingItemsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_EliminationsAndReconcilingItemsMember"/>
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    <link:label id="lab_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis_019b46bd-05e4-7b0d-8100-102c25a4f3e5_terseLabel_en-US" xlink:label="lab_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Temporary difference, unused tax losses and unused tax credits [axis]</link:label>
    <link:label id="lab_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis_label_en-US" xlink:label="lab_ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Temporary difference, unused tax losses and unused tax credits [axis]</link:label>
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    <link:label id="lab_ck0000932782_RevolvingCreditLinesMember_documentation_en-US" xlink:label="lab_ck0000932782_RevolvingCreditLinesMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Revolving credit lines [Member]</link:label>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_RevolvingCreditLinesMember" xlink:to="lab_ck0000932782_RevolvingCreditLinesMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_APlusGradeMember_019b46bd-0715-7977-a11f-406d9b990f60_terseLabel_en-US" xlink:label="lab_ck0000932782_APlusGradeMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">A+</link:label>
    <link:label id="lab_ck0000932782_APlusGradeMember_label_en-US" xlink:label="lab_ck0000932782_APlusGradeMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">A Plus [member]</link:label>
    <link:label id="lab_ck0000932782_APlusGradeMember_documentation_en-US" xlink:label="lab_ck0000932782_APlusGradeMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">A plus.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_APlusGradeMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_APlusGradeMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_APlusGradeMember" xlink:to="lab_ck0000932782_APlusGradeMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_InterbankYieldCurvesSensitivityDerivativeFinancialInstruments_019b46bd-0715-79b1-a23f-b1a3041ecbd0_negatedTerseLabel_en-US" xlink:label="lab_ck0000932782_InterbankYieldCurvesSensitivityDerivativeFinancialInstruments" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Sensitivity DFIs</link:label>
    <link:label id="lab_ck0000932782_InterbankYieldCurvesSensitivityDerivativeFinancialInstruments_019b46bd-0715-702b-81d5-2416da2a657a_negatedLabel_en-US" xlink:label="lab_ck0000932782_InterbankYieldCurvesSensitivityDerivativeFinancialInstruments" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Sensitivity DFIs</link:label>
    <link:label id="lab_ck0000932782_InterbankYieldCurvesSensitivityDerivativeFinancialInstruments_label_en-US" xlink:label="lab_ck0000932782_InterbankYieldCurvesSensitivityDerivativeFinancialInstruments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interbank yield curves sensitivity derivative financial instruments</link:label>
    <link:label id="lab_ck0000932782_InterbankYieldCurvesSensitivityDerivativeFinancialInstruments_documentation_en-US" xlink:label="lab_ck0000932782_InterbankYieldCurvesSensitivityDerivativeFinancialInstruments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Interbank yield curves sensitivity derivative financial instruments</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_InterbankYieldCurvesSensitivityDerivativeFinancialInstruments" xlink:href="ck0000932782-20251231.xsd#ck0000932782_InterbankYieldCurvesSensitivityDerivativeFinancialInstruments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_InterbankYieldCurvesSensitivityDerivativeFinancialInstruments" xlink:to="lab_ck0000932782_InterbankYieldCurvesSensitivityDerivativeFinancialInstruments" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_BlockThirtyFiveCuencaDelSuresteMember_019b46bd-05e4-73a4-95a4-b14461f2cddd_terseLabel_en-US" xlink:label="lab_ck0000932782_BlockThirtyFiveCuencaDelSuresteMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Block 35 Cuenca del Sureste</link:label>
    <link:label id="lab_ck0000932782_BlockThirtyFiveCuencaDelSuresteMember_label_en-US" xlink:label="lab_ck0000932782_BlockThirtyFiveCuencaDelSuresteMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Block Thirty Five Cuenca del Sureste [member]</link:label>
    <link:label id="lab_ck0000932782_BlockThirtyFiveCuencaDelSuresteMember_documentation_en-US" xlink:label="lab_ck0000932782_BlockThirtyFiveCuencaDelSuresteMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Block thirty five Cuenca del Sureste.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_BlockThirtyFiveCuencaDelSuresteMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_BlockThirtyFiveCuencaDelSuresteMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_BlockThirtyFiveCuencaDelSuresteMember" xlink:to="lab_ck0000932782_BlockThirtyFiveCuencaDelSuresteMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_NominalAmountOfHedgingInstruments_019b46bd-05e4-78ac-9a01-70ab2113e78f_verboseLabel_en-US" xlink:label="lab_ck0000932782_NominalAmountOfHedgingInstruments" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Variable to fixed</link:label>
    <link:label id="lab_ck0000932782_NominalAmountOfHedgingInstruments_label_en-US" xlink:label="lab_ck0000932782_NominalAmountOfHedgingInstruments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nominal Amount Of Hedging Instruments</link:label>
    <link:label id="lab_ck0000932782_NominalAmountOfHedgingInstruments_documentation_en-US" xlink:label="lab_ck0000932782_NominalAmountOfHedgingInstruments" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Nominal amount of hedging instruments.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_NominalAmountOfHedgingInstruments" xlink:href="ck0000932782-20251231.xsd#ck0000932782_NominalAmountOfHedgingInstruments"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_NominalAmountOfHedgingInstruments" xlink:to="lab_ck0000932782_NominalAmountOfHedgingInstruments" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_WeightedAverageFixedInterestRate_019b46bd-053c-7e54-8e88-832886cdec1e_terseLabel_en-US" xlink:label="lab_ck0000932782_WeightedAverageFixedInterestRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest rate of derivative instrument</link:label>
    <link:label id="lab_ck0000932782_WeightedAverageFixedInterestRate_label_en-US" xlink:label="lab_ck0000932782_WeightedAverageFixedInterestRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Average Fixed Interest Rate</link:label>
    <link:label id="lab_ck0000932782_WeightedAverageFixedInterestRate_documentation_en-US" xlink:label="lab_ck0000932782_WeightedAverageFixedInterestRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Weighted average fixed interest rate.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_WeightedAverageFixedInterestRate" xlink:href="ck0000932782-20251231.xsd#ck0000932782_WeightedAverageFixedInterestRate"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_WeightedAverageFixedInterestRate" xlink:to="lab_ck0000932782_WeightedAverageFixedInterestRate" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DeerParkRefiningLimitedPartnershipMember_019b46bd-053c-7a22-83a8-c4cf60d37ae7_terseLabel_en-US" xlink:label="lab_ck0000932782_DeerParkRefiningLimitedPartnershipMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">DPRLP</link:label>
    <link:label id="lab_ck0000932782_DeerParkRefiningLimitedPartnershipMember_label_en-US" xlink:label="lab_ck0000932782_DeerParkRefiningLimitedPartnershipMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deer Park Refining Limited Partnership [Member]</link:label>
    <link:label id="lab_ck0000932782_DeerParkRefiningLimitedPartnershipMember_documentation_en-US" xlink:label="lab_ck0000932782_DeerParkRefiningLimitedPartnershipMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deer Park Refining Limited Partnership</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DeerParkRefiningLimitedPartnershipMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DeerParkRefiningLimitedPartnershipMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DeerParkRefiningLimitedPartnershipMember" xlink:to="lab_ck0000932782_DeerParkRefiningLimitedPartnershipMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AreaMisionMember_019b46bd-05e4-7ded-a90e-669f4ff03ea7_terseLabel_en-US" xlink:label="lab_ck0000932782_AreaMisionMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Misi&#243;n</link:label>
    <link:label id="lab_ck0000932782_AreaMisionMember_label_en-US" xlink:label="lab_ck0000932782_AreaMisionMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Area Mision [member]</link:label>
    <link:label id="lab_ck0000932782_AreaMisionMember_documentation_en-US" xlink:label="lab_ck0000932782_AreaMisionMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Area Mision.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AreaMisionMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AreaMisionMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AreaMisionMember" xlink:to="lab_ck0000932782_AreaMisionMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_RevenueFromDomestic_019b46bd-05e4-7faf-9cf6-b389f8cd4161_terseLabel_en-US" xlink:label="lab_ck0000932782_RevenueFromDomestic" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Domestic</link:label>
    <link:label id="lab_ck0000932782_RevenueFromDomestic_019b46bd-05e4-7f36-b9ab-70be6960b7d6_verboseLabel_en-US" xlink:label="lab_ck0000932782_RevenueFromDomestic" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Domestic sales</link:label>
    <link:label id="lab_ck0000932782_RevenueFromDomestic_019b46bd-05e4-7907-9f08-7d9c748efd98_netLabel_en-US" xlink:label="lab_ck0000932782_RevenueFromDomestic" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Total domestic sales</link:label>
    <link:label id="lab_ck0000932782_RevenueFromDomestic_label_en-US" xlink:label="lab_ck0000932782_RevenueFromDomestic" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue From Domestic</link:label>
    <link:label id="lab_ck0000932782_RevenueFromDomestic_documentation_en-US" xlink:label="lab_ck0000932782_RevenueFromDomestic" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Revenue from domestic.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RevenueFromDomestic" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RevenueFromDomestic"/>
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    <link:label id="lab_ck0000932782_MexicanGovernmentContributionsMember_019b46bd-053c-76ed-a90d-fb2e3b8eddad_terseLabel_en-US" xlink:label="lab_ck0000932782_MexicanGovernmentContributionsMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Mexican Government contributions</link:label>
    <link:label id="lab_ck0000932782_MexicanGovernmentContributionsMember_label_en-US" xlink:label="lab_ck0000932782_MexicanGovernmentContributionsMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mexican Government contributions [member]</link:label>
    <link:label id="lab_ck0000932782_MexicanGovernmentContributionsMember_documentation_en-US" xlink:label="lab_ck0000932782_MexicanGovernmentContributionsMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Mexican Government contributions</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_MexicanGovernmentContributionsMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_MexicanGovernmentContributionsMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_MexicanGovernmentContributionsMember" xlink:to="lab_ck0000932782_MexicanGovernmentContributionsMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_HedgedItemAssets_019b46bd-05e4-7a03-bc89-9ff48843dbe8_terseLabel_en-US" xlink:label="lab_ifrs-full_HedgedItemAssets" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hedged risk exposure</link:label>
    <link:label id="lab_ifrs-full_HedgedItemAssets_label_en-US" xlink:label="lab_ifrs-full_HedgedItemAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Hedged item, assets</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_HedgedItemAssets" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_HedgedItemAssets"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_HedgedItemAssets" xlink:to="lab_ifrs-full_HedgedItemAssets" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod_019b46bd-0715-7070-9561-1af2756b71c0_terseLabel_en-US" xlink:label="lab_ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amount recorded in advance from customers were recognized as revenue for the period</link:label>
    <link:label id="lab_ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod_label_en-US" xlink:label="lab_ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue that was included in contract liability balance at beginning of period</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod" xlink:href="https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod" xlink:to="lab_ifrs-full_RevenueThatWasIncludedInContractLiabilityBalanceAtBeginningOfPeriod" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionTwoDecember2025Member_019ce6e7-a337-7c36-b73f-00a550e09a65_terseLabel_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionTwoDecember2025Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Two, December 2025</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionTwoDecember2025Member_label_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionTwoDecember2025Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Two, December 2025 [Member]</link:label>
    <link:label id="lab_ck0000932782_StrengtheningOfFinancialPositionTwoDecember2025Member_documentation_en-US" xlink:label="lab_ck0000932782_StrengtheningOfFinancialPositionTwoDecember2025Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Strengthening of Financial Position Two, December 2025</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_StrengtheningOfFinancialPositionTwoDecember2025Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_StrengtheningOfFinancialPositionTwoDecember2025Member"/>
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    <link:label id="lab_srt_ConsolidatedEntitiesAxis_019b46bd-0715-7d95-81a2-b75ff7dd5c43_terseLabel_en-US" xlink:label="lab_srt_ConsolidatedEntitiesAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Consolidated Entities [Axis]</link:label>
    <link:label id="lab_srt_ConsolidatedEntitiesAxis_label_en-US" xlink:label="lab_srt_ConsolidatedEntitiesAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidated Entities [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidatedEntitiesAxis" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ConsolidatedEntitiesAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ConsolidatedEntitiesAxis" xlink:to="lab_srt_ConsolidatedEntitiesAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossTradeReceivables_019b46bd-0684-78f4-b447-7d428905ca7e_negatedTerseLabel_en-US" xlink:label="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossTradeReceivables" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Impairment losses on trade receivables from customers</link:label>
    <link:label id="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossTradeReceivables_019b46bd-0684-7c38-84c4-bd96178cf747_negatedLabel_en-US" xlink:label="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossTradeReceivables" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">(Impairment) reversal of accounts receivables recognized in the income statement</link:label>
    <link:label id="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossTradeReceivables_019b46bd-0684-7f7e-abcb-5c99efb57437_terseLabel_en-US" xlink:label="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossTradeReceivables" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Impairment losses on trade receivables from customers</link:label>
    <link:label id="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossTradeReceivables_label_en-US" xlink:label="lab_ifrs-full_ImpairmentLossRecognisedInProfitOrLossTradeReceivables" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impairment loss recognised in profit or loss, trade receivables</link:label>
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    <link:label id="lab_ck0000932782_A5.350NotesDue2028Member_019bd5bb-4951-7f02-b165-cd1df6d2dd71_terseLabel_en-US" xlink:label="lab_ck0000932782_A5.350NotesDue2028Member" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">5.350% Notes Due 2028</link:label>
    <link:label id="lab_ck0000932782_A5.350NotesDue2028Member_label_en-US" xlink:label="lab_ck0000932782_A5.350NotesDue2028Member" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">5.350% Notes Due 2028 [Member]</link:label>
    <link:label id="lab_ck0000932782_A5.350NotesDue2028Member_documentation_en-US" xlink:label="lab_ck0000932782_A5.350NotesDue2028Member" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">5.350% Notes Due 2028</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_A5.350NotesDue2028Member" xlink:href="ck0000932782-20251231.xsd#ck0000932782_A5.350NotesDue2028Member"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_A5.350NotesDue2028Member" xlink:to="lab_ck0000932782_A5.350NotesDue2028Member" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CatalystMember_019b46bd-05e5-7ffe-951f-dd7a8d010365_terseLabel_en-US" xlink:label="lab_ck0000932782_CatalystMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Catalyst</link:label>
    <link:label id="lab_ck0000932782_CatalystMember_label_en-US" xlink:label="lab_ck0000932782_CatalystMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Catalyst [Member]</link:label>
    <link:label id="lab_ck0000932782_CatalystMember_documentation_en-US" xlink:label="lab_ck0000932782_CatalystMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Catalyst</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CatalystMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CatalystMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CatalystMember" xlink:to="lab_ck0000932782_CatalystMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfComponentsOfIncomeTaxExplanatory_019b46bd-0684-7848-8f34-e05f61521264_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfComponentsOfIncomeTaxExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Income Tax Expense (Benefit)</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfComponentsOfIncomeTaxExplanatory_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfComponentsOfIncomeTaxExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of components of income tax [text block]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfComponentsOfIncomeTaxExplanatory_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfComponentsOfIncomeTaxExplanatory" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of components of income tax.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfComponentsOfIncomeTaxExplanatory" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfComponentsOfIncomeTaxExplanatory"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfComponentsOfIncomeTaxExplanatory" xlink:to="lab_ck0000932782_DisclosureOfComponentsOfIncomeTaxExplanatory" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_CEPSAEPMexicoSdeRLdeCVMember_019b46bd-0715-748a-969a-62186e32defd_terseLabel_en-US" xlink:label="lab_ck0000932782_CEPSAEPMexicoSdeRLdeCVMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">CEPSA E.P. Mxico S. de R.L. de C.V</link:label>
    <link:label id="lab_ck0000932782_CEPSAEPMexicoSdeRLdeCVMember_label_en-US" xlink:label="lab_ck0000932782_CEPSAEPMexicoSdeRLdeCVMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">CEPSA E.P. Mxico S. de R.L. de C.V [member]</link:label>
    <link:label id="lab_ck0000932782_CEPSAEPMexicoSdeRLdeCVMember_documentation_en-US" xlink:label="lab_ck0000932782_CEPSAEPMexicoSdeRLdeCVMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">CEPSA E.P. Mxico S. de R.L. de C.V.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_CEPSAEPMexicoSdeRLdeCVMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_CEPSAEPMexicoSdeRLdeCVMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_CEPSAEPMexicoSdeRLdeCVMember" xlink:to="lab_ck0000932782_CEPSAEPMexicoSdeRLdeCVMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AccruedInterestOnShortTermDebt_019b46bd-0715-7b69-a494-43f4a6ed85e7_terseLabel_en-US" xlink:label="lab_ck0000932782_AccruedInterestOnShortTermDebt" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued interest</link:label>
    <link:label id="lab_ck0000932782_AccruedInterestOnShortTermDebt_label_en-US" xlink:label="lab_ck0000932782_AccruedInterestOnShortTermDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued interest on short term debt</link:label>
    <link:label id="lab_ck0000932782_AccruedInterestOnShortTermDebt_documentation_en-US" xlink:label="lab_ck0000932782_AccruedInterestOnShortTermDebt" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Accrued interest on short term debt.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AccruedInterestOnShortTermDebt" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AccruedInterestOnShortTermDebt"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_AccruedInterestOnShortTermDebt" xlink:to="lab_ck0000932782_AccruedInterestOnShortTermDebt" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_DisclosureOfRollForwardRelatedToTheMexicanBondsTable_019b46bd-053c-70ad-9790-caf45fe36062_terseLabel_en-US" xlink:label="lab_ck0000932782_DisclosureOfRollForwardRelatedToTheMexicanBondsTable" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Disclosure of Roll Forward Related to the Mexican Bonds [Table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfRollForwardRelatedToTheMexicanBondsTable_label_en-US" xlink:label="lab_ck0000932782_DisclosureOfRollForwardRelatedToTheMexicanBondsTable" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of Roll Forward Related to the Mexican Bonds [Table]</link:label>
    <link:label id="lab_ck0000932782_DisclosureOfRollForwardRelatedToTheMexicanBondsTable_documentation_en-US" xlink:label="lab_ck0000932782_DisclosureOfRollForwardRelatedToTheMexicanBondsTable" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of Roll Forward Related to the Mexican Bonds [Table]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_DisclosureOfRollForwardRelatedToTheMexicanBondsTable" xlink:href="ck0000932782-20251231.xsd#ck0000932782_DisclosureOfRollForwardRelatedToTheMexicanBondsTable"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_DisclosureOfRollForwardRelatedToTheMexicanBondsTable" xlink:to="lab_ck0000932782_DisclosureOfRollForwardRelatedToTheMexicanBondsTable" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProfitsharingDutyDeferredDUCExpense_019b46bd-053c-7721-97dd-6e7f816eb22a_terseLabel_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyDeferredDUCExpense" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred DUC expense (benefit)</link:label>
    <link:label id="lab_ck0000932782_ProfitsharingDutyDeferredDUCExpense_label_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyDeferredDUCExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Profit-sharing duty Deferred DUC expense</link:label>
    <link:label id="lab_ck0000932782_ProfitsharingDutyDeferredDUCExpense_documentation_en-US" xlink:label="lab_ck0000932782_ProfitsharingDutyDeferredDUCExpense" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Profit-sharing duty deferred DUC expense.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProfitsharingDutyDeferredDUCExpense" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProfitsharingDutyDeferredDUCExpense"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProfitsharingDutyDeferredDUCExpense" xlink:to="lab_ck0000932782_ProfitsharingDutyDeferredDUCExpense" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_SixPointThreeSevenFivePercentBondsDueTwoThousandFortyFiveMember_019b46bd-05e4-791e-89a6-d20a01ef95ce_terseLabel_en-US" xlink:label="lab_ck0000932782_SixPointThreeSevenFivePercentBondsDueTwoThousandFortyFiveMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">6.375% Bonds due 2045</link:label>
    <link:label id="lab_ck0000932782_SixPointThreeSevenFivePercentBondsDueTwoThousandFortyFiveMember_label_en-US" xlink:label="lab_ck0000932782_SixPointThreeSevenFivePercentBondsDueTwoThousandFortyFiveMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Six Point Three Seven Five Percent Bonds Due Two Thousand Forty Five [member]</link:label>
    <link:label id="lab_ck0000932782_SixPointThreeSevenFivePercentBondsDueTwoThousandFortyFiveMember_documentation_en-US" xlink:label="lab_ck0000932782_SixPointThreeSevenFivePercentBondsDueTwoThousandFortyFiveMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Six point three seven five percent bonds due two thousand forty five.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_SixPointThreeSevenFivePercentBondsDueTwoThousandFortyFiveMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_SixPointThreeSevenFivePercentBondsDueTwoThousandFortyFiveMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_SixPointThreeSevenFivePercentBondsDueTwoThousandFortyFiveMember" xlink:to="lab_ck0000932782_SixPointThreeSevenFivePercentBondsDueTwoThousandFortyFiveMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_PetroleumProductsSwapMember_019b46bd-053d-7380-841d-bd7bf1a72aa4_terseLabel_en-US" xlink:label="lab_ck0000932782_PetroleumProductsSwapMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Petroleum Products Swaps</link:label>
    <link:label id="lab_ck0000932782_PetroleumProductsSwapMember_label_en-US" xlink:label="lab_ck0000932782_PetroleumProductsSwapMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Petroleum Products Swap [Member]</link:label>
    <link:label id="lab_ck0000932782_PetroleumProductsSwapMember_documentation_en-US" xlink:label="lab_ck0000932782_PetroleumProductsSwapMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Petroleum Products Swap</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_PetroleumProductsSwapMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_PetroleumProductsSwapMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_PetroleumProductsSwapMember" xlink:to="lab_ck0000932782_PetroleumProductsSwapMember" xlink:type="arc" order="1"/>
    <link:label id="lab_srt_CurrencyAxis_019b46bd-0684-7b40-87cd-efbe0aa5b48e_terseLabel_en-US" xlink:label="lab_srt_CurrencyAxis" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Currency [Axis]</link:label>
    <link:label id="lab_srt_CurrencyAxis_label_en-US" xlink:label="lab_srt_CurrencyAxis" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Currency [Axis]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_srt_CurrencyAxis" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_CurrencyAxis"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_CurrencyAxis" xlink:to="lab_srt_CurrencyAxis" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_LossContingencyDamagesSoughtAmount_019c758d-a57f-758e-bd37-4daeb4baa0be_terseLabel_en-US" xlink:label="lab_ck0000932782_LossContingencyDamagesSoughtAmount" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss contingency damages sought amount</link:label>
    <link:label id="lab_ck0000932782_LossContingencyDamagesSoughtAmount_label_en-US" xlink:label="lab_ck0000932782_LossContingencyDamagesSoughtAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingency Damages Sought Amount</link:label>
    <link:label id="lab_ck0000932782_LossContingencyDamagesSoughtAmount_documentation_en-US" xlink:label="lab_ck0000932782_LossContingencyDamagesSoughtAmount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loss Contingency Damages Sought Amount</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_LossContingencyDamagesSoughtAmount" xlink:href="ck0000932782-20251231.xsd#ck0000932782_LossContingencyDamagesSoughtAmount"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_LossContingencyDamagesSoughtAmount" xlink:to="lab_ck0000932782_LossContingencyDamagesSoughtAmount" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProvedDevelopedAndUndevelopedReservesAbstract_019b46bd-05e4-7a37-99c5-ddc38748d5fa_terseLabel_en-US" xlink:label="lab_ck0000932782_ProvedDevelopedAndUndevelopedReservesAbstract" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proved developed and undeveloped reserves:</link:label>
    <link:label id="lab_ck0000932782_ProvedDevelopedAndUndevelopedReservesAbstract_019b46bd-05e4-7094-8862-b5a211a2f1ab_verboseLabel_en-US" xlink:label="lab_ck0000932782_ProvedDevelopedAndUndevelopedReservesAbstract" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Proved developed and undeveloped reserves:</link:label>
    <link:label id="lab_ck0000932782_ProvedDevelopedAndUndevelopedReservesAbstract_label_en-US" xlink:label="lab_ck0000932782_ProvedDevelopedAndUndevelopedReservesAbstract" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proved Developed And Undeveloped Reserves [abstract]</link:label>
    <link:label id="lab_ck0000932782_ProvedDevelopedAndUndevelopedReservesAbstract_documentation_en-US" xlink:label="lab_ck0000932782_ProvedDevelopedAndUndevelopedReservesAbstract" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Proved Developed And Undeveloped Reserves [abstract]</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProvedDevelopedAndUndevelopedReservesAbstract" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProvedDevelopedAndUndevelopedReservesAbstract"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProvedDevelopedAndUndevelopedReservesAbstract" xlink:to="lab_ck0000932782_ProvedDevelopedAndUndevelopedReservesAbstract" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_ProjectFinanceMember_019b46bd-053d-7746-b7ef-cca5dd61d399_terseLabel_en-US" xlink:label="lab_ck0000932782_ProjectFinanceMember" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Project financing</link:label>
    <link:label id="lab_ck0000932782_ProjectFinanceMember_label_en-US" xlink:label="lab_ck0000932782_ProjectFinanceMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Project Finance [member]</link:label>
    <link:label id="lab_ck0000932782_ProjectFinanceMember_documentation_en-US" xlink:label="lab_ck0000932782_ProjectFinanceMember" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Project finance.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_ProjectFinanceMember" xlink:href="ck0000932782-20251231.xsd#ck0000932782_ProjectFinanceMember"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_ProjectFinanceMember" xlink:to="lab_ck0000932782_ProjectFinanceMember" xlink:type="arc" order="1"/>
    <link:label id="lab_ck0000932782_AverageInterestRate_019b46bd-053d-71a6-aa79-19bdcc06142d_terseLabel_en-US" xlink:label="lab_ck0000932782_AverageInterestRate" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average interest rate (%)</link:label>
    <link:label id="lab_ck0000932782_AverageInterestRate_label_en-US" xlink:label="lab_ck0000932782_AverageInterestRate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Average Interest Rate</link:label>
    <link:label id="lab_ck0000932782_AverageInterestRate_documentation_en-US" xlink:label="lab_ck0000932782_AverageInterestRate" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Average interest rate.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_AverageInterestRate" xlink:href="ck0000932782-20251231.xsd#ck0000932782_AverageInterestRate"/>
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    <link:label id="lab_ck0000932782_RepaymentOfDebtPrincipalAmount_019b46bd-053c-7889-a009-ac222501fe4a_negatedLabel_en-US" xlink:label="lab_ck0000932782_RepaymentOfDebtPrincipalAmount" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Debt payments, principal only</link:label>
    <link:label id="lab_ck0000932782_RepaymentOfDebtPrincipalAmount_label_en-US" xlink:label="lab_ck0000932782_RepaymentOfDebtPrincipalAmount" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayment Of Debt Principal Amount</link:label>
    <link:label id="lab_ck0000932782_RepaymentOfDebtPrincipalAmount_documentation_en-US" xlink:label="lab_ck0000932782_RepaymentOfDebtPrincipalAmount" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Repayment of debt principal amount.</link:label>
    <link:loc xlink:type="locator" xlink:label="loc_ck0000932782_RepaymentOfDebtPrincipalAmount" xlink:href="ck0000932782-20251231.xsd#ck0000932782_RepaymentOfDebtPrincipalAmount"/>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_ck0000932782_RepaymentOfDebtPrincipalAmount" xlink:to="lab_ck0000932782_RepaymentOfDebtPrincipalAmount" xlink:type="arc" order="1"/>
    <link:label id="lab_ifrs-full_DisclosureOfExplorationAndEvaluationAssetsExplanatory_019b46bd-05e4-7460-b321-546fe8aa7635_terseLabel_en-US" xlink:label="lab_ifrs-full_DisclosureOfExplorationAndEvaluationAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Costs Incurred for Oil and Gas Property Exploration and Development Activities</link:label>
    <link:label id="lab_ifrs-full_DisclosureOfExplorationAndEvaluationAssetsExplanatory_label_en-US" xlink:label="lab_ifrs-full_DisclosureOfExplorationAndEvaluationAssetsExplanatory" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disclosure of exploration and evaluation assets [text block]</link:label>
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