When looking at a CARFAX Vehicle History Report and CARFAX cars for sale with one owner, the info given on service history, title, ownership changes, and more can help soothe any nerves about the used-car-buying experience. CARFAX aggregates their information from many official sources. Such sources include info on the vehicle title and ownership change, which can come from official motor vehicle bureaus in both the U.S. and Canada. That's not all, as other sources that CARFAX uses for their information include law enforcement agencies, fire departments, state vehicle inspection stations, insurance companies, rental car companies, car auctions, and many more. It's a thorough process that uses the vehicle's VIN to get a total picture of its life. With a vehicle designated One-Owner CARFAX used, Atlanta drivers can be confident that the info is as accurate as possible.