# Washington — Vehicle emissions testing: which counties require it, in which states

For Washington, recent or pending change is Washington's vehicle emission check program ended Jan. 1, 2020; program / authority is vehicle emission check program, verified against its source on 2026-08-18.

- **State:** Washington _(our reading, not quoted from the source)_
- **Recent or pending change:** Washington's vehicle emission check program ended Jan. 1, 2020 _(verified: appears in the quote below)_
- **Program / authority:** vehicle emission check program _(verified: appears in the quote below)_

## What the source says

> After 38 years, Washington's vehicle emission check program ended Jan. 1, 2020. An emission test is no longer required before renewing your vehicle registration.

## Source

- https://ecology.wa.gov/Air-Climate/Air-quality/Vehicle-emissions

Last verified: 2026-08-18. Review by: 2027-08-18.
Part of [Vehicle emissions testing: which counties require it, in which states](https://referencesource.org/vehicle-emissions-testing-by-state/).