MV-912: Vehicle Bill of Sale (PDF). English. Use this form to show proof of a vehicle ownership transfer through a private sale. Download.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. The Trailer is to be sold free and clear of any liens, encumbrances, or mortgages. If you purchase or sell a trailer, a New York trailer bill of sale can document the transfer of ownership for vehicle registration. New York requires that you complete a bill of sale whenever you buy or sell a car privately. Use our NY bill of sale forms to prove the transfer of ownership of property from seller to buyer in the state of New York. Use our NY bill of sale forms to prove the transfer of ownership of property from seller to buyer in the state of New York. The completed document should be kept in the parties' records and submitted to the relevant authorities. Use this free form for private transactions.