★★★★★
"Highly professional, efficient, and courteous staff. Service is quick — the entire process is smooth from start to finish. Thorough inspection and attention to detail are truly phenomenal. Highly recommend!"
STAR CERTIFIED · TEST ONLY · FULLERTON, CA
Fullerton's Most Trusted STAR-Certified Smog Check Station
537 W. Valencia Dr., Unit C, Fullerton CA 92832
Mon–Fri 9am–5pm · Sat 8:30am–3:30pm · Walk-ins Welcome
STAR Certified
BAR Licensed
No Appointment
All Vehicles
Diesel & RVs
4.8★ Yelp · 584 Reviews
Fast smog. Slow DMV. We're 1 block away.
Handle the quick one first.
Smog Check Services
Licensed by the California Bureau of Automotive Repair to test and certify most vehicle types.
Standard Smog Check
Regular biennial smog certification for most passenger cars and light trucks.
STAR Directed Vehicles
STAR certified to handle vehicles the DMV selects for enhanced testing — many shops cannot.
Diesel Trucks & Heavy Duty
Full diesel smog testing for trucks and heavy-duty vehicles. Most shops can't — we can.
Gross Polluters
Certified to test vehicles flagged as gross polluters by the state.
RVs & Motorhomes
Smog testing for motorhomes and RVs with GVWR under 14,000 lbs. Vehicles over 14,000 lbs GVWR are not eligible.
Why 20+ Years of Customers Trust Us
We only test — no repairs. Zero conflict of interest and unbiased results every time.
Multiple Test Lanes
More lanes, shorter waits — in and out fast even when busy.
No Appointment Necessary
Walk-ins welcome all day, every day we're open.
Comfortable Waiting Room
Clean seating, water, snacks, and magazines. Most checks: 20–30 min.
1 Block from Fullerton DMV
Perfect for same-day smog check + registration renewal.
All Major Cards Accepted
Visa, Mastercard, Discover, Amex. Cash welcome too.
Locally Owned & BAR Licensed
Privately owned, licensed by CA Bureau of Automotive Repair since 1998.
★★★★★
"Going here for years — no appointment needed. When I didn't pass, Seung showed me exactly what part I needed (a few dollars at any auto parts store). Saved me from an overpriced repair. Returned and passed!! Honest and very reasonably priced!"
★★★★★
"Super quick and attentive — they even pointed out my car had a safety recall and emphasized how important it was. That level of genuine concern goes well beyond what any business needs to do."
★★★★★
"Great and friendly service — in and out in no time! Very friendly staff. I would advise anybody to go here. Very pleased with the service!"
★★★★★
"Excellent service by Chuck and his technician. My 1999 Chevy Silverado passed with certificate for DMV renewal — took about 20 minutes. Mr. Chuck and staff were polite and courteous. Worth the drive — I'd recommend them to anyone!"
★★★★★
"If you want friendly service, this is the place to go. And if you get a coupon from the website, you can get a discount."
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Fullerton Smog Center
537 W. Valencia Dr., Unit C · Fullerton CA
(714) 525-1166 · autosmog.net
Must show before service begins.
Cannot combine · Fullerton only.
Serving Orange County & Beyond
Drivers across the region choose our STAR-certified smog check center.
Fullerton
Our home base — right next to the Fullerton DMV.
Anaheim
Most trusted STAR smog test in North OC.
Placentia
STAR certified, no appointment — in and out fast.
Anaheim Hills
Fast STAR smog for DMV registration renewal.
Brea
Cars, trucks, diesel, and RVs — all certified.
Buena Park
Fast, hassle-free smog with no appointment.
La Habra
Accurate smog testing for all vehicle types.
Yorba Linda
STAR-certified test-only smog, easy drive over.
La Mirada
Thorough certified smog checks for all types.
Location & Hours
Address
537 W. Valencia Dr., Unit CFullerton, California 92832
Hours
- Monday – Friday
- 9:00 AM – 5:00 PM
- Saturday
- 8:30 AM – 3:30 PM
- Sunday
- Closed
Phone
(714) 525-1166Frequently Asked Questions
Everything you need to know about smog checks in California.