CA Emissions test

Napa County emissions test

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

Last synced Mar 17, 2026, 7:16 AM UTC from official source .

California county smog coverage is source-backed, but station lookup is delegated to BAR and the published fee signal uses a statewide official average rather than a county-specific price.

What to know

Before you go

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

Typical fee $67.20 Double-check the station fee before you go.

Gas vehicles Gas vehicles starting at 8 years old Use this if the vehicle is gas, hybrid, or another covered light-duty type.

Diesel vehicles Diesel vehicles model year 1998 or newer • up to 14,000 pounds GVWR Use this if the vehicle is diesel-powered.

Exemptions

1975 and older gasoline vehicles, motorcycles, and trailers
1997 and older diesel vehicles
diesel or natural gas vehicles over 14,000 pounds
electric vehicles
gasoline vehicles less than eight model years old

Stations

Official station finder

Find a station

California DMV and BAR publish Napa County smog coverage, but live station availability is delegated to the BAR locator.

Use the BAR locator for live locations.

Do this now

Finish emissions first

Open the BAR locator or official county rule.
Complete the test or waiver step that applies to your vehicle.
Go back to California renewal once the requirement is cleared.

Find a station Open California renewal