Oregon's
State Implementation Plan considers emission reductions needed in specific geographic areas and includes the following testing requirements for the Portland and Medford metro-areas:
Vehicles required to test in Portland
- All 1975 and newer cars, trucks, vans, motor homes and buses powered by
gasoline, alternative fuels (such as propane) or hybrids registered within the Portland testing boundaries
- All 1975 and newer
diesel powered vehicles with a manufacturer's gross weight rating of 8,500 pounds or less (This includes all passenger cars and most light-duty trucks) registered within the Portland testing boundaries. If your diesel vehicle qualifies for this exemption, but you receive a DMV registration renewal, please visit a Clean Air Station for assistance
Vehicles required to test in Medford
- All cars, trucks, vans, motor homes and buses powered by gasoline, alternative fuels (such as propane) or hybrids 20 years old or less and registered within the DEQ Medford area boundaries
- All diesel powered vehicles 20 years old or less with a manufacturer's gross weight rating of 8,500 pounds or less (This includes all passenger cars and most light-duty trucks) registered within the DEQ Medford area boundaries. This includes all passenger cars and most light-duty trucks
Portland and Medford testing exemptions
Other Portland and Medford testing information
For information about DMV registration and DEQ testing requirements, see page for
Vehicles New to Oregon and
Vehicles Temporarily Located Outside of Oregon.
PLEASE NOTE: For the safety of staff, the public and our furry friends, we encourage pets not to visit us when coming to a DEQ testing station.
Service animals are welcome.