I certify that, to the best of my knowledge, the title is. A Utah Bill of Sale acts as a legal record for the transfer of property.It's mandatory in Utah to transfer vehicle ownership. Bring the completed bill of sale, signed title, odometer disclosure statement, and any other required documents specific to your state. 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. Use a Utah motor vehicle bill of sale form to create a legally binding record of your vehicle sale and confirm ownership transfer. How to fill out the Utah Monthly Vehicle Sales Report Form TC-928? Below, we've outlined the five steps and forms required for how to sell a car in the state of Utah. Lawyer's Assistant: Have you already discussed this issue with the dealership or the lender? It's necessary when registering the title and vehicle in the new owner's name.