The lender must provide a notice to the consumer that confirms the sale price of the repossessed vehicle from the auction or private sale. This letter, called a  Deficiency Notice, is sent to the consumer after the sale. If the sale price does not pay off the balance that is owed on the loan, the consumer will owe the remaining balance to satisfy the loan, even if the vehicle was voluntarily given back. Frequently, the lender will assign collection of the deficient balance to a collection agency.