We used Carfax first to sell our used car, which sold in less than an hr, as we advertised that we'd supply the Carfax report to show the car's history. Now we're using it again to find our next vehicle: it saved us from purchasing a "lemon" w/ a dubious ownership history. The Carfax report showed a "time hole" in the ownership history-this explained why the owner listed the car (for the given year & low mileage) @ such a great price. When confronted with our questions the owner finally fessed up that it had been obtained at an auction, this was after much "stalling" on providing answers to our repeated requests for "more info".