Warranty means any written affirmation of fact or written promise made in connection with the sale or lease of a motor vehicle or motor vehicle equipment by a manufacturer to a buyer or lessee that relates to the nature of the material or workmanship and affirms or promises that such material or workmanship is defect free or will meet a specified level of performance over a specified period of time (including any extensions of such specified period of time), or any undertaking in writing in connection with the sale or lease by a manufacturer of a motor vehicle or item of motor vehicle equipment to refund, repair, replace, or take other remedial action with respect to such product in the event that such product fails to meet the specifications set forth in the undertaking.


49 CFR § 579.4

Scoping language

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