[onewhippedpuppy]

Originally Posted by ossiblue

Carfax buys its information from insurance companies, repair shops, state dmvs, auctions, rental companies, and more. Once the information is included, it cannot be removed unless it is proved to be false, and that would only be information supplied by one source, in your case, a dealer. Carfax may not have all the history if a car was repaired by a shop that did not report. A particular dealer may not have a contract with Carfax so nothing would be reported.

This. Carfax is really a bit of a joke. I've had a lot of cars with prior paintwork and a clean Carfax. Their service reporting is also terrible because their system tries to condense service records into a single entry. WTF does "engine checked" or "service claim" mean, and how is that helpful?

There was a recent Rennlist thread where a RL member was trading in a prior CPO 997 that suddenly showed an accident on the Carfax. As a CPO car it had supposedly been inspected for any damage and paintwork, and the car had zero damage during his ownership. Obviously the Carfax entry killed his trade in offer. He tried to have Carfax change the entry and they ignored him. After having multiple inspections done, the dealer called Carfax and were able to have the entry removed.