You can sell your vehicle privately or to a dealership even if you still owe money on your auto loan. If you owe more than your car's value or your sales price doesn't satisfy the loan balance, you must pay your lender to release the vehicle's lien. Otherwise, you can keep the profit you make from your sale. Obtain Your Payoff To determine if you'll need to come up with extra money to satisfy your vehicle loan, retrieve your car's payoff amount. Call your lender to find out the amount of your payoff and your loan's per-diem amount. A per-diem...