Connect with Ready To Buy Carfax Consumers. Carfax, a Unit of Ihs (Nyse: Ihs), is the Vehicle History Expert for Used Car Buyers, Sellers and the Automotive Industry. Carfax Created the Vehicle History Report in 1986 and Continues to Develop Innovative Services – like Carfax Used Car Listings and Mycarfax – that make it Easier for Dealers to Acquire, Advertise, Retail and Service Used Cars. Carfax Maintains a Database Comprising over 15 Billion Vehicle History Records from more than 92,000, Automotive Dealership ...