An auto loan payoff letter is just a way to prove that you have paid in full for a car. If you are selling your vehicle, often the buyer will ask to.Enclosed with this letter, you will find a formal payoff statement confirming the full satisfaction of your loan. Edit, sign, and share printable authorization for payoff form online. No need to install software, just go to DocHub, and sign up instantly and for free. An auto loan payoff quote, sometimes called a 10day payoff, states how much you need to pay off the loan balance. How to fill out the Payoff Request Letter Templates? So now what do I do?