Vehicle Inspection

Newer model year vehicle exemption

Please visit our Newer Model Year Vehicles page​ for more information and to see if your vehicle qualifies.

Pre-paid coupons simplify multiple tests

With our pre-paid coupons dealerships, repair shops and fleets no longer need to use cash or checks when paying for testing. For more information contact our Vehicle Inspection Technical Center at 971-673-1630 x 0 or email VIPInfo.

Mobile on-site testing (M.O.S.T.): Let us come to you

Using On-Board Diagnostic technology, DEQ can quickly and easily provide testing services for most 1996 and newer model vehicles. Best of all, the test is portable. That means DEQ can come to you!
On-site Emissions Testing is one way we can help your business save time and money. By testing "on-site" you avoid lines, save time and lower fuel costs. Your vehicles stay cleaner and stay on the lot.
For more information please email the M.O.S.T. program.

How it works

  • Preference given to 10 cars or more
  • DEQ arrives at your lot
  • DEQ tests your 1996 and newer vehicles
  • DEQ issues certificates for passing cars
  • Certificates are valid for 6 months
  • Pre-paid coupons simplify payment
  • Cost for the service is $30.00 per certificate
  • There is no charge for non-passing vehicles

We will need:

  • A designated testing area
  • An attendant to organize and move vehicles  
  • Approved payment upon completion

For more information or to make an appointment call:

  • Dave Ayres at 503-703-2775

DEQ-Recognized Auto Repair Shops

DEQ maintains a list of Recognized Automotive Repair Shops in the Portland-Metro area. The list is a guide to repair shops that have the basic equipment and knowledge to fix emissions problems.
If you are the owner of an auto repair facility and are interested in becoming a Recognized Auto Repair Shop​, please contact DEQ's Vehicle Inspection Program at 971-673-1630 x 0.


For questions or feedback on the Vehicle Inspection Program, visit our Questions and Comments page, or call one of our area contact numbers below:

  • Portland Area: 503-229-5066
  • Medford Area: 541-776-6145
  • Toll-Free in Oregon: 877-476-0583
  • Hearing Impaired: 711