You’re better off calling the lender and seeing if there is anything you can do. They don’t want to repossess your car any more than you want to have it repossessed, but if you simply stop making payments, you will give them no other choice. Negative things like repossessions and bankruptcy stay on your credit record for 7 years. Credit can be repaired, but it’s a lot less work to just avoid damaging it in the first place.