Fleet emission testing schedules and requirements
Fleet vehicles that were manufactured prior to 2009 require annual emission testing. State and local government vehicles are tested for free. Federal government and privately-owned fleet vehicles only need to be tested every other year. Check the schedule to see when your fleet vehicles are required to be tested and where to get a test.
If you are an Authorized Test Facility, you can conduct your own emissions test, otherwise you will need to contract out the test.
Fleets may be authorized to conduct their own emission tests or can send their vehicles to an authorized agent. Find an Authorized Emission Specialist near you, or see how you can become an Authorized Testing Facility.
These gasoline vehicles never need emission tests:
- 2009 and newer models.
- Toyota Prius and Honda Insight.
- Vehicles over 25 years old.
Testing is also not required for any diesel vehicles that are:
- 2007 and newer models.
- Equipped with an exhaust particle filter.
- A scale weight of 6,000 pounds or less (found on vehicle's registration certificate).
Diesel testing in Pierce County, King County, the Olympic Peninsula, areas north of Seattle, and Central Washington
Spokane County and surrounding areas
Clark County and surrounding areas
Gasoline testing in King County and areas North, and Central Washington