A-Test Only has locations in Vacaville and Vallejo, California. We have California State Certified Test Only
Smog Stations that are licensed to inspect and certify most vehicles, including Gross Polluters, Smog
Required, STAR Station Required Smog, Diesel, and Test Only DMV directed vehicles.
Smog Test News
Effective January 1st, 2010 - Diesel Vehicles 1998 & Newer have been included in the
Smog Check Program. Select the link for more details: Diesel Smog Inspection
A-Test Only licensed smog stations have earned an excellent reputation in Vacaville
and Vallejo for exceptional customer satisfaction. Schedule an appointment or just
drop in for a smog inspection and experience what our customers share with their
friends and family.