The National Institute for Automotive Service Excellence (ASE) is a U.S. organization that tests and verifies the knowledge of automotive technicians and other service professionals. Its certifications help professionals demonstrate technical expertise and give employers and customers a recognized way to identify qualified talent. ASE serves technicians, repair businesses, students, instructors, employers, and drivers across the country.

ASE offers certification tests for automotive service professionals, along with entry-level testing, military testing, and specialized programs such as xEV safety and refrigerant recovery and recycling. It supports recertification and renewal through in-person and online testing options, including ASE Flex Test and the ASE Renewal App. Test preparation resources include study guides, practice tests, webinars, and introductory e-learning. ASE also provides accredited training resources and workforce development support for schools and industry partners.

For employers, ASE offers tools to promote certified teams and improve business visibility. Drivers can use ASE’s Blue Seal of Excellence shop locator and access free information and tips about vehicle ownership.