□ 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.General Bill of Sale – This form is generally used between two private parties to prove the sale and purchase of personal property. Create a Utah bill of sale form to document the transfer of ownership of a vehicle or another piece of personal property. Download a Utah motor vehicle bill of sale template below. Get it in PDF or Word format. A Utah motor vehicle bill of sale is written documentation of a transfer of vehicle ownership. 1. Obtain the Utah State Motor Vehicle Bill of Sale form.