The MVA provides a Bill of Sale form. A Maryland motor vehicle bill of sale (Form VR-181) documents the details surrounding the purchase and sale of a vehicle between two or more parties.Create a Maryland bill of sale form (auto, boat, firearm, trailer, motorcycle, etc.) with stepbystep instructions. A Maryland motor vehicle bill of sale is a form completed during a private vehicle sale between a buyer and a seller. If a bill of sale is required, then you need to complete Form VR-181.