CARFAX is an American company that provides vehicle history reports to individuals and businesses. The reports provide information such as accident history, service records, and odometer readings for cars and trucks. This information is collected from a variety of sources, including government agencies, auto auctions, and auto dealers. The company was founded in 1984 and is headquartered in Centreville, Virginia. CARFAX vehicle history reports are widely used by consumers, car dealerships, and other businesses to make informed decisions about buying, selling, or maintaining vehicles.