A 4th Smog

No. A 4th Smog is licensed as a Test & Repair station. This station can run your smog test and, if the vehicle fails, diagnose and repair it in the same shop.

A 4th Smog is open Monday 8:30 AM to 7 PM; Tuesday 8:30 AM to 8:30 PM; Wednesday 8:30 AM to 9 PM; Thursday 8:30 AM to 9 PM; Friday 8:30 AM to 8:30 PM; Saturday 9 AM to 6 PM; Sunday 9:30 AM to 5 PM. Hours can change on holidays, so call ahead if you are cutting it close.

Yes. A 4th Smog accepts walk-ins, so you can drive in without booking ahead.

A 4th Smog accepts Cash, Credit Card.

A 4th Smog has held a BAR smog license since 2026. You can verify the license status at bar.ca.gov.

A 4th Smog has not published a price on SmogCheckDeals. The Bureau of Automotive Repair puts the statewide average at $69.16 as of August 2026, about $65 for a 2000-or-newer vehicle and $73 for 1999-or-older, plus the $8.25 certificate fee. Call (408) 292-5311 for a quote.

A 4th Smog does not take online bookings here, but walk-ins are welcome. Call (408) 292-5311 to check the wait.

Staff at A 4th Smog speak English.

Bring the car, your registration or DMV renewal notice, and a way to pay. Most smog checks take 15 to 30 minutes, and most visits are closer to 20.

Because A 4th Smog is a Test & Repair station, it can diagnose and repair the problem in the same shop, then run the free retest within 30 days. If the repair bill is steep, California's Consumer Assistance Program covers up to $1,200 of emissions repairs for qualifying owners.

The closest alternatives in San Jose are Wynn Smog Center (0.8 mi) and Smog Man (1.2 mi). Both are listed further up this page with their ratings and hours.