□ Not included with the vehicle sale. A Utah motor vehicle bill of sale, known as Form TC-843, is an official document that provides proof that a vehicle has been sold in the State of Utah.Create a Utah bill of sale form to document the transfer of ownership of a vehicle or another piece of personal property. Streamline your transactions. Use our Utah-specific bill of sale template to simplify your property or vehicle transfers. Learn about bills of sale in Utah for vehicles, firearms, animals, and more. Motor Vehicle Bill of Sale (Form TC-843)– Can be used to prove the sale and purchase of either a motorcycle or automobile in the state of Utah. It must include vehicle specifics such as make, model, year, VIN, sale price, and odometer reading. Both parties' signatures are mandatory. A Utah motor vehicle bill of sale is written documentation of a transfer of vehicle ownership.