Emissions testing

Some counties in Washington State require emissions testing every 2 years. If you live in the following counties, you may need to have your vehicle tested:

• Clark County
• King County
• Pierce County
• Snohomish County
• Spokane County

Getting an Emissions Test

For more information, including the locations and hours of emissions testing, see the Department of Ecology emissions website.

Exempt vehicles

Certain hybrid vehicles that have an efficiency rating of at least 50 miles per gallon for city driving are exempt from emissions testing.

Frequently asked questions

Can I renew my tabs online if my vehicle needs an emissions test?

Yes, if your vehicle passes the emissions test before you go online. After the test is complete, the emission test station will send us the results electronically. When the results are updated in our records, you will be able to renew online. Our records should show your vehicle passed the emissions test within 2 hours of its completion.

My tabs expired because my vehicle wasn’t running when I needed to get an emissions test. Now that my vehicle is repaired, how can I legally drive it to the emission test station?

Either of the following permits will allow you to drive your vehicle to an emission inspection:

• A 2-day transit permit. A transit permit allows you to drive the vehicle from your home to an emission test station and then to a local vehicle licensing office. There is no fee for a transit permit, but some vehicle licensing offices charge a $4 service fee.
• A 3-day trip permit. Trip permits may be purchased at any vehicle licensing office, and cannot be used for off-road vehicles.