Find out what documents you will need to provide proof of sale and ownership if you are buying, selling, or gifting a vehicle. Clearly print or type all information, except signatures.A New York vehicle bill of sale (also known as form MV-912) is a document that records the transfer of ownership of a motor vehicle from one party to another. A New York motor vehicle bill of sale provides proof that a motor vehicle has been legally sold and acquired in the State of New York. Get a bill of sale in New York to be used for any vehicle, horse or general bill of sale record. Forms. Used car dealers must post this. Used Car Consumer Bill of Rights and give you a copy before you sign a sales contract.