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

For Virginia, counties where testing is required is the counties of Arlington, Fairfax, Loudoun, Prince William, and Stafford; and the cities of Alexandria, Fairfax, Falls Church, Manassas, and Manassas Park; program / authority is Northern Virginia emissions inspection program, verified against its source on 2026-08-19.

- **State:** Virginia _(our reading, not quoted from the source)_
- **Counties where testing is required:** the counties of Arlington, Fairfax, Loudoun, Prince William, and Stafford; and the cities of Alexandria, Fairfax, Falls Church, Manassas, and Manassas Park _(verified: appears in the quote below)_
- **Program / authority:** Northern Virginia emissions inspection program _(verified: appears in the quote below)_
- **Vehicles covered / exempt:** a model year less than 25 calendar years prior to January 1 of the present calendar year according to the formula, the current calendar year minus 24 _(per law.lis.virginia.gov, not stated by the source above)_

## What the source says

> "Northern Virginia program area" or "program area" means the territorial area encompassed by the boundaries of the following localities: the counties of Arlington, Fairfax, Loudoun, Prince William, and Stafford; and the cities of Alexandria, Fairfax, Falls Church, Manassas, and Manassas Park.

## What law.lis.virginia.gov says

> Was manufactured or designated by the manufacturer as a model year less than 25 calendar years prior to January 1 of the present calendar year according to the formula, the current calendar year minus 24, except those identified by remote sensing as specified in subdivision 5 of this definition;

Source: https://law.lis.virginia.gov/admincode/title9/agency5/chapter91/section20/

## Source

- https://law.lis.virginia.gov/admincode/title9/agency5/chapter91/section20/

Last verified: 2026-08-19. Review by: 2027-08-19.
Part of [Vehicle emissions testing: which counties require it, in which states](https://referencesource.org/vehicle-emissions-testing-by-state/).