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 (24 Hour Auto Service) was established in 2003

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

At present there are over 420,000 professionals with current certifications. They work in every segment of the automotive service industry: car and truck dealerships, independent garages, fleets, service stations, franchises, and more.

Here's how our certification works: Prospective candidates register for and take one or more of our 40-plus exams. The tests are grouped into specialties for automobile, medium/heavy truck, truck equipment, school bus, and collision repair technicians as well as engine machinists, alternate fuels technicians, parts specialists, collision damage estimators and auto service consultants.

Upon passing at least one exam and after providing proof of two years of relevant work experience, the test taker becomes certified. Certification, however, is not for life. To remain certified, those with our credentials must be retested every five years.

The tests, which are conducted twice a year at over 700 locations around the country, are administered by ACT, known for its academic and occupational testing programs. The exams stress knowledge of job-related skills. They are no cinch to pass; approximately one out of three test takers fails.

Consumers benefit from our certification. It is a valuable yardstick by which to measure the knowledge and skills of individual technicians as well as the commitment to quality of the repair facility employing certified professionals.

Consumers should look for facilities that display the our Seal of Excellence© logo.