Bay Side Smog Service is always outstanding!…read more I've been here a few times with different cars, and they are consistently friendly, accommodating, and quick. I've always been able to get an appointment the same day or the next day. They're located toward the end of the parking lot once you pull in. The smog check itself usually takes about 15-20 minutes, and there's a small office where you can wait while they complete the inspection. Once you pass, they provide the paperwork right away, and I've been able to renew my DMV registration within a few hours. If you need a smog check in the area, I definitely recommend checking them out. Great service, convenient appointments, and a very quick turnaround!

FINALLY!! A smog place I (and you) can trust…read more I came here as a last ditch effort in attempting to smog my wifes 2015 Chevy Malibu. We were getting some bad codes that prevented it from being smogged and I went to another smog place in Concord. I was sold approx $800 in repairs and THEN told that I should call CarFax get a quote and take it and get rid of the car! This 2015 Malibu is hardley drive as I work from home 100K milles. After hitting another auto repair place it was told to me... Im betting this would pass go to BAYSIDE SMOG... I did and Im glad I did. Retold my story to Naqib and he smiled and stayed neutral on it while seeing the disbelief in his eyes on my being told the car would cost more to repair and smog than to just "sell it as is" It took them 15 minutes maybe to smog the car with no issues... no weird side gimmicks or tricks, the car just passed as it was. Bayside has a lifelong customer and Ill steer everyone needing a smog to this guy. Solid service!

Super Station is located along Monument Blvd, across the street from Del Valle Super Mercado…read more I came in as a walk‑in to get my gas car smogged on 07/17/2026 at around 10:45am. One of the attendants got me started on the paperwork almost immediately. By 10:55am, my car was already being inspected, and by 11:05am, everything was done. The total, including the state paperwork, was $58--about $15 less than what I paid for my last smog check at another shop. I was really happy with the quick turnaround and the price. Highly recommended! BONUS MATERIAL: - They are a STAR certified station. Smog check was $49.75 (with coupon found on their website) + $8.25 for the CA paperwork.

First time I took my car to a gas station car shop. I'll definitely go back for future smog test…read more They were quick and very professional. The price was very competitive.

Quick and easy, went in at the last 30 mins before they…read moreclosed and they happily assisted me. Cool people.

good service and not much of a wait…read more I wish the pricing was posted since iI think I paid more than I needed to - it sure seemed that different customers were getting different pricing - including some awarded a coupon without asking. Next time I'll compare pricing from other locations.

Excellent, fast, and friendly service! Called on a Tuesday around 12:40pm to book a same day…read moreappointment for a Smog check and was able to get one. I needed to get a Smog certification to get my car registration renewed, and Walnut Creek Smog made the process easy! Check in was quick, and the Smog check was completed in 15 minutes as promised. I've been here twice now, and I'll definitely be back in the future!

I had a great experience at Walnut Creek Smog. Making an appointment was simple and there was no…read morewait time after I arrived at noon. Andy and I had a fun conversation and the time flew by. The shop is clean and organized and everyone was very friendly. On the pocket on the driver's side door, I had a car escape tool holder attached and I had tried, unsuccessfully, to remove it. The man who did the smog saw that it was a problem and asked if I wanted it to be removed. He removed it which I really appreciate. He didn't have to do this but this was an example of someone going above and beyond. I highly recommend this shop.

Called the same day and talked to the owner who was fantastic. I said I needed a smog check done on…read moremy car and he said I could come in the same day. I paid $65ish because they were running a promotion. I would definitely recommend them to anyone who needs theirs done. Thank you!

My Initial review has been changed because of Ken! I clld in expecting to get the same rude guy…read morethat's been there for years but was pleasantly surprised! Ken has great customer service and was just super cool! I told him I'd be in after work around 5pm. I pulled up, nobody there but me, but then again it's almost 100 degrees outside right now. I'm glad I gave them another shot. My review score went from a 1 to 5!! I appreciate you Ken and good looking out on the discount.

Great service, smogged my vehicle, answered the phone, was very easy to schedule, fast service,…read moregreat price!

I can't say enough good things about Sami & his mechanics. I'm always nervous going into shops as a…read morewoman, but Sami treated me like I was his own daughter. I brought my car in for a screeching sound in my front brakes & they took me in immediately, fixed the issue & made sure my car was safe before they put me back on the road. Unbeatable service! I am forever grateful & will remain a loyal, returning customer. Thank you, Sami & team! Bless you all!

Great, quick service! The person working was really nice and made the whole process easy. I was in…read moreand out in no time. Definitely recommend supporting this local Pleasant Hill business!

Hours state they are open, showed up at 8:40 waiting till 9 for quick smog no one there, phone goes…read morestraight to voicemail, will take business else where

After our former shop ceased smog tests, we were referred to Smog Guys who excelled in all metrics…read more Both James (Tech) and Ali (Front Desk) immediately greeted, provided efficient service and had our car completed in less than 15 minutes. Additionally, Ali honored the coupon rate without hassle, which is a testament to this shop's notable customer service and business ethic. Overall, a great experience, thanks to Ali and James. For anyone in need of smog services, Smog Guys Concord is highly recommended!

Quick & friendly, offer free retest if necessary. Easy to work with and explained everything.read more

Ok... down to the wire, and it's time for the smog check. Went to my normal site... they couldn't…read morefit me in. A friend recommended this place, and I'm extremely grateful. I've used the gas station before, but never realized there was a smog station in the back .The entrance looks sketchy, so I was a little bit leery, but once back there. Mr. Loc helped me out. He was great!! The car had just come from the shop and they did a shoddy job. He showed me the problems, which affected the computer hook up. He made needed adjustments (definitely above and beyond) and walked me through the review. I appreciated his exceptional service. The value is normal price and overall, it will be my new location to get my smogs done. Thank you Loc I really appreciated your help, Sharine

Am done with Costco after 25+ years. They give me the wrong vaccine just now and 3 months ago…read morewrecked a vacation with their vacation package. Wont ever go back.

Just went down there today. Dude in the garage told me that they don't do smog checks, and they're…read moreno longer Green Star Smog. If that's the case, someone needs to do some online updates.

The smog technician went out of his way to fit me in after his shift ended…read more I would highly recommend the smog shop and the prices are reasonable.