If you are buying a used car, one of the things you should be wary about is vin cloning. Since this is a growing crime, make it a point to do a vin lookup prior to the purchase. With the advent of the internet, a v.i.n. search has become a lot easier. You can find a site that has a facility to check vin numbers, so you can learn about the history of the vehicle you're buying before making a decision.