When buying a used car, especially an old one, borrowing money is not the best strategy. Not only must you have the money to buy the car you MUST budget and be able to handle the costs of the inevitable repairs the car will require. The very worst scenario is where you borrow to your limit, the car breaks down and it will take more than you can afford to fix it up. Now you are stuck with the payments on a car you can't use and can't fix. If you try to sell it to get out of the payments you will take a big loss because it won't run so you can't pay off the loan by selling it. Now what do you do? Borrow more money to fix the car?