An Affidavit of Vehicle Theft is a lengthy questionnaire furnished to a policyholder upon filing an auto, motorcycle, boat truck or other motor vehicle theft claim. The questionnaire encompasses questions regarding the insured, vehicle ownerships, vehicle description, vehicle condition, and damage and theft details. It can also include various personal and financial questions. The affidavit is signed, witnessed and notarized. Affidavit of vehicle theft is typically executed when auto, motorcycle, boat or truck theft claims are involved.