Why will carfax put your mind at ease? They only report what is reported to police and government offices (DMV, etc.). For example I know of a guy with a 95 M3 that got rear ended, you could reach in the trunk without opening it. The owner and the guy that hit him resolved the accident without calling the police or reporting the accident. The car comes back clean from Carfax when in fact it has been severely damaged. Carfax is not fool proof.