I was looking for a Mercedes SLK Roadster, and right before I was going to check one out, I ran a CARFAX Report and discovered there were a lot of hidden things the owner claimed he had no idea about. A few days later I found another one online, and asked the seller to send me the VIN number so I could check it out before I drove out to look at it. The CARFAX was perfectly clean! One owner, 1800 miles per year, no accidents or any other black marks–it was perfect! CARFAX saved me from spending time on a counterfeit car and assured me that the claim of ultra-low mileage was genuine.