It would be a very bad thing to do. You are voluntary having it repossessed. The lender will sell the car for whatever they can get and you will be responsible for the difference in what they sell it for and the balance on the loan. They will more than likely wholesale it and you will be stuck owing the rest. Your credit will also be ruined for 7 years. This is a horrible idea. Go set down with the lender and work something out if at all possible. You do not want your car repossessed.