Price
Call for price
Hours
Open 7 days a week
Station type
Test & Repair
Appointments
Walk-ins welcome
Hours
- Monday
- 8:30 AM – 7 PM
- Tuesday
- 8:30 AM – 8:30 PM
- Wednesday
- 8:30 AM – 9 PM
- Thursday
- 8:30 AM – 9 PM
- Friday
- 8:30 AM – 8:30 PM
- Saturday
- 9 AM – 6 PM
- Sunday
- 9:30 AM – 5 PM
Good to know
Languages
English
Payment
Cash, Credit Card
What to expect at A 4th Smog
A 4th Smog is licensed by the Bureau of Automotive Repair as a Test & Repair smog station in San Jose, so it can run the inspection and, if your car fails, diagnose and fix it in the same shop. It is not STAR certified, so if your DMV renewal notice says "STAR Station Required" you will need a different station.
Walk-ins are welcome. Most smog checks take 15 to 30 minutes, and most visits are closer to 20.
What to bring
Your registration or DMV renewal notice
It says whether the car needs a STAR station.
The car, with the check engine light off
On a 2000-or-newer car, a lit check engine light fails the test on its own.
A way to pay
The $8.25 state certificate is paid on top of the test when the car passes, unless the station's price or coupon includes it.
What if I fail?
- A 4th Smog can diagnose and repair the problem in the same shop, then retest the car.
- Each station sets its own retest price, so ask before the first test.
- BAR's Consumer Assistance Program pays up to $1,450 toward emissions repairs for income-eligible owners.
147 East Santa Clara Street, Unit 10, San Jose, CA 95113
Get directions →Hours
- Monday
- 8:30 AM – 7 PM
- Tuesday
- 8:30 AM – 8:30 PM
- Wednesday
- 8:30 AM – 9 PM
- Thursday
- 8:30 AM – 9 PM
- Friday
- 8:30 AM – 8:30 PM
- Saturday
- 9 AM – 6 PM
- Sunday
- 9:30 AM – 5 PM
Other stations near A 4th Smog
Nearby cities in Santa Clara County
Questions about A 4th Smog
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.
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.
The closest alternatives in San Jose are Wynn Smog Center (0.8 mi) and Notan (1.1 mi). Both are listed further up this page with their ratings and hours.
How we get this data: BAR licenses and STAR status, Google hours and ratings, coupons published by the station.
Verify this station’s license and STAR standing at bar.ca.gov.
Own this shop? Add photos
BAR field office: San Jose • Licensed since 2026