OR Emissions test

Washington County emissions test

Get the emissions requirement cleared before you renew in Washington County.

Last synced Mar 17, 2026, 7:18 AM UTC from official source .

Core Oregon DEQ coverage is source-backed, but DEQ testing depends on metro-area boundaries, fuel and model-year rules, and live station availability remains delegated to the official DEQ locations pages.

What to know

Before you go

Testing required Yes This county can hold up renewal until you clear the test.

Typical fee $25.00 Double-check the station fee before you go.

Gas vehicles Gas vehicles starting at 4 years old Use this if the vehicle is gas, hybrid, or another covered light-duty type.

Diesel vehicles Diesel vehicles starting at 4 years old Use this if the vehicle is diesel-powered.

Exemptions

newer vehicles within the first four model years
motorcycles
vehicles outside the DEQ testing boundary
certain diesel vehicles outside covered model-year and weight rules

Stations

Official DEQ stations

Find a station

Oregon publishes Washington County DEQ testing coverage, but live station availability is delegated to the official DEQ locations pages.

Use the official station finder for live locations.

Do this now

Finish emissions first

Open the official station finder or official county rule.
Complete the test or waiver step that applies to your vehicle.
Go back to Oregon renewal once the requirement is cleared.

Find a station Open Oregon renewal