I bought a car with a "clean Carfax" report that the dealer was very happy to push on me. "no damage reported to Carfax" but every one of the body panels had been painted, at different times and the drivers airbag had been deployed. I went to the shop that painted it (called around to find out) and they told me they regularly rebuild cars that have been totaled and looked at me like I was crazy when I asked if the reported the damage. "Why would we" he said. A car can be totaled, airbags deployed and rebuilt by a guy in his garage and never show up on a carfax report. Why would anyone report doing work to car, especially if they knew that doing so would harm their customer, making it more difficult to sell? Carfax is just barely above a scam in my opinion. Would a criminal be any less of a criminal if they told you "nobody has reported any crimes I may have committed. The whole concept is silly. I also found numerous examples of "One Owner" cars that had 2 or 3, even 4 owners, right there in the report. A rep from Carfax told me they "just use DMV records" but all I had to was count the number of times a car was sold and new owner reported to count 4 owners on a report with the big "ONE OWNER" banner on it. Carfax should state on every report: nobody is required to report even catastrophic damage to a vehicle and very few shops do so, the information in this report is extremely limited.