Until the early 1970s, consumers had no way to distinguish between incompetent and competent mechanics. In response to this need, the independent, non-profit National Institute for Automotive Service Excellence (ASE) was established in 1972.

ASE's mission is to improve the quality of vehicle repair and service through the testing and certification of repair and service professionals.

At present, about 400,000 professionals hold current certifications. They work in every segment of the automotive service industry: car and truck dealerships, independent garages, fleets, service stations, franchises, and more.