When selling a vehicle, the seller must sign and handprint their name on the proof of ownership document. A Pennsylvania vehicle bill of sale is a legal document formalizing the sale and purchase of a motor vehicle between a buyer and seller.The person named on a court order or the purchaser of a vehicle at a sheriff's sale must be the applicant listed on Form. MV-1. First, the seller has to fill out the title transfer form, which includes things like the VIN, the odometer reading, and the price of the sale. Sell your car, truck, or SUV in Philadelphia, PA with TrueCar. Get a free appraisal and an instant, no-obligation cash offer today. How does the bidding process work in a virtual sale? At the appropriate phase in the transaction, both buyer and seller will be prompted to e-sign the bill of sale within their mobile PrivateAuto app. Other Suggested Searches. We are proud to be able to offer you top dollar for your vehicle when you sell it directly to us.