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Recognized Automotive Repair Shops

DEQ maintains a list of automotive repair shops, auto centers and dealerships in the greater Portland metro area that have volunteered to be recognized as qualified servicers for vehicle emissions inspections. Each location has the appropriate diagnostic equipment and employs at least one technician certified by A.S.E. (Automotive Service Excellence) in Engine Repair (A1), Electrical Systems (A6) and Engine Performance (A8), with a minimum of two years automotive repair experience in emission systems. Some shops and technicians may have additional specialized training in hybrid vehicles or have a Master A.S.E. technician. 

The list below is not complete, as some qualified facilities have chosen not to be listed.

NOTE: This list does not imply a recommendation from DEQ's Vehicle Inspection Program, nor does DEQ guarantee the work of these facilities. Be sure to contact the business in advance to ensure they can service your vehicle.


Is your "check engine" light on?

When the dashboard Malfunction Indicator Lamp is on, an emission-related system problem has been identified by the diagnostic system of the vehicle.

Use the Filter and Sort options below to find a shop that fits your needs. You may also export this list to a print version or pdf for download.

List updated Summer 2022

View a map of the Recognized Auto Repair Shops to find a shop near you.

Accreditations definitions

Master A.S.E.: 
A technician who has formal education, on the job experience, and has successfully passed all eight A.S.E. certifications. This means the technician understands every system on a modern vehicle.

A certification recognizing businesses in Oregon that adopt best practices and protect the environment. Learn more at

A facility that offers hybrid vehicle diagnostics, servicing and repairs.