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  <xsd:element abstract="true" id="nav_ThreePointZeroPercentSeniorSubordinatedConvertibleNotesMember" name="ThreePointZeroPercentSeniorSubordinatedConvertibleNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_TracFundingFacilityMember" name="TracFundingFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_TradeAndOtherReceivablesMember" name="TradeAndOtherReceivablesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_TransactiontypeMember" name="TransactiontypeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_UnrecognizedGainsLossesNetMember" name="UnrecognizedGainsLossesNetMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nav_UnrecognizedTaxBenefitsThatWouldNotImpactEffectiveTaxRate" name="UnrecognizedTaxBenefitsThatWouldNotImpactEffectiveTaxRate" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="nav_VariableInterestEntityConsolidatedCarryingAmountCashAndCashEquivalents" name="VariableInterestEntityConsolidatedCarryingAmountCashAndCashEquivalents" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="nav_VariableInterestEntityPrimaryBeneficiaryBlueDiamondPartsAndBlueDiamondTruckMember" name="VariableInterestEntityPrimaryBeneficiaryBlueDiamondPartsAndBlueDiamondTruckMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_VariableInterestEntityPrimaryBeneficiarySecuritizationsTreatedAsBorrowingsMember" name="VariableInterestEntityPrimaryBeneficiarySecuritizationsTreatedAsBorrowingsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_VariableInterestEntityPrimaryBeneficiaryTransactionDoesNotQualifyForSaleAccountingMember" name="VariableInterestEntityPrimaryBeneficiaryTransactionDoesNotQualifyForSaleAccountingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_VoluntarySeparationProgramMember" name="VoluntarySeparationProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_WarrantyAxis" name="WarrantyAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_WarrantyDomain" name="WarrantyDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="nav_WarrantyRecoveries" name="WarrantyRecoveries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="nav_WholesalePortfolioMember" name="WholesalePortfolioMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
</XBRL>