To transfer a vehicle from a seller to a buyer in a private sale, you can use the Vehicle Bill of Sale (PDF) (MV-912). This form below is designed for use on upon the sale of a motor vehicle or automobile.Such a bill of sale is needed to confirm a party's ownership in the car. What information do I need to complete a bill of sale? This form certifies the purchase price and determines the sales tax you must pay when registering the vehicle. What should you include in your vehicle bill of sale? Seal vehicle deals securely. Use our free template to create a bill of sale with a promissory note for automobiles. Yes, you need a bill of sale. State the terms and odometer reading on the BOS.