Napa Smog Test Only is licensed by the State of Californa to perform and transmit Smog Checks (vehicle emissions tests) as required by the DMV.

Come to Napa Smog Test Only if:

1. Your Vehicle Registration Renewal has the wording circled in RED it means you need to go to a TEST ONLY station like Napa Smog Test Only

2. Your Vehicle Registration Renewal requires a SMOG CHECK (not necessarily a Test Only check.

3. You are buying or selling a car more than four years old.

4. You need to register an out-of-state vehicle in California.

.Results are transmitted electronically for you so there are no papers to file. We aim to provide fast, accurate service with a smile to 100% of our customers.

We are easy to find - 2 blocks from downtown Napa on Main St. at Napa St - kitty corner from St. John's Church

Smog Checks for all vehicles:

Cars, vans, SUVs, trucks, RVs - all makes and models

Smog Checks for gas-powered vehicles 1976 and newer

Smog Checks for diesel-powered vehicle - NEW requirement for 1998 and newer

Smog Checks for a change in vehicle ownership

Smog Checks for out-of-state vehicles

Smog Check re-tests after your vehicle has been repaired

 We can process your paperwork and perform the tests and inspections in 15 minutes or less - no waiting.

Serving all California residents - everyone is welcome to come in for a smog inspection in the Napa Valley and beyond: Napa, Sonoma, Yountville, St. Helena, American Canyon, Fairfield, Vallejo, Glen Ellen, Santa Rosa, San Francisco. Smog testing done right!