Price
Call for price
Hours
Open Mon–Sat
Station type
Test & Repair
Appointments
Walk-ins welcome
Hours
- Monday
- 8 AM – 5 PM
- Tuesday
- 8 AM – 5 PM
- Wednesday
- 8 AM – 5 PM
- Thursday
- 8 AM – 5 PM
- Friday
- 8 AM – 5 PM
- Saturday
- 8 AM – 12 PM
- Sunday
- Closed
Good to know
Languages
English
Payment
Credit Card, Debit Card, NFC/Contactless
What to expect at Union Service Center
Union Service Center is licensed by the Bureau of Automotive Repair as a Test & Repair smog station in Fullerton, so it can run the inspection and, if your car fails, diagnose and fix it in the same shop. It is STAR certified, so it can test vehicles the DMV directs to a STAR station, including gross polluters.
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?
- Union Service Center 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.
3001 Yorba Linda Blvd, Fullerton, CA 92831
Get directions →Hours
- Monday
- 8 AM – 5 PM
- Tuesday
- 8 AM – 5 PM
- Wednesday
- 8 AM – 5 PM
- Thursday
- 8 AM – 5 PM
- Friday
- 8 AM – 5 PM
- Saturday
- 8 AM – 12 PM
- Sunday
- Closed
Also listed on
Other stations near Union Service Center
Fullerton 76
351 N Placentia
Fullerton Stop N Smog
1133 E Commonwealth Ave
Fullerton Smog Check Test Only
800 N Harbor Blvd
Sunny Hills Smog Center
100 West Bastanchury Road
Monzon Garage
112 North Malden
Nearby cities in Orange County
Questions about Union Service Center
Union Service Center is open Monday 8 AM to 5 PM; Tuesday 8 AM to 5 PM; Wednesday 8 AM to 5 PM; Thursday 8 AM to 5 PM; Friday 8 AM to 5 PM; Saturday 8 AM to 12 PM. Closed Sunday. Hours can change on holidays, so call ahead if you are cutting it close.
Union Service Center accepts Credit Card, Debit Card, NFC/Contactless.
Google lists the following accessibility features at Union Service Center: wheelchair accessible entrance, wheelchair accessible parking, wheelchair accessible restroom.
Union Service Center has held a BAR smog license since 2016. You can verify the license status at bar.ca.gov.
Union Service Center 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 (714) 528-6701 for a quote.
Union Service Center does not take online bookings here, but walk-ins are welcome. Call (714) 528-6701 to check the wait.
Staff at Union Service Center speak English.
The closest alternatives in Fullerton are Fullerton 76 (1.2 mi) and Fullerton Stop N Smog (2.3 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: Riverside • Licensed since 2016