The new owner must give the original bill of sale to the DMV along with the other required proofs of ownership when they title and register the vehicle. Clearly print or type all information, except signatures.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 Lien Law requires the garageman to: Notify the owner of the vehicle; Advertise the sale of the vehicle; and Sell the vehicle at public auction. Make sure there are no liens listed on the title, or that the liens listed there have lien releases. Get a bill of sale in New York to be used for any vehicle, horse or general bill of sale record. Forms. Here are some items you may need: Vehicle Registration; Warranty information; Bill of sale. You don't have to remove a lien from the title certificate. You can just give the original title certificate and original lien release. Below, we've outlined the six steps and forms required for how to sell a car in the state of New York so you can sell your car quickly for the most cash.