□ 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.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. Create a Utah bill of sale form to document the transfer of ownership of a vehicle or another piece of personal property. Edit, sign, and share utah bill of sale filled out example online. No need to install software, just go to DocHub, and sign up instantly and for free. A Utah motor vehicle bill of sale is written documentation of a transfer of vehicle ownership.