had an excellent experience at All Star Smog! The staff was professional, friendly, and made the…read moreentire smog check process quick and stress-free. They explained everything clearly, provided great customer service, and had me in and out in no time. It's hard to find a business that's both efficient and genuinely cares about its customers, but All Star Smog definitely does. I highly recommend them to anyone needing a smog check. I'll definitely be coming back and recommending them to my family and friends. Thank you for the outstanding service!

Terrible experience from start to finish. I was the only customer there, yet the smog test took…read morenearly 20 minutes to complete. The technician (bald-headed guy) initially told me, "You passed." I paid, and he proceeded to prepare the paperwork. Then, almost immediately after I paid, he suddenly told me, "Actually, you didn't pass." I was completely confused and asked what happened. Instead of explaining the situation professionally, he had a smirky attitude and said, "Did you get it out of your system?" It came across as extremely dismissive and almost like he was trying to gaslight me. Whether my vehicle passed or failed is one thing, but the way this was handled was unprofessional and left a very bad impression. I expected a straightforward, professional experience not confusion and attitude after I had already paid!! I understand mistakes happen. But when you can't even get the most basic analysis of a smog check right, it tells me a lot about how accurate the rest of your service may be. If you can't correctly determine whether a vehicle passed or failed, that's a serious problem. And seriously, the tech needs to fix his condescending attitude. Being wrong is one thing, but being condescending while giving out incorrect information makes the experience even worse. TERRIBLE COMMUNICATION!! Not even a mention of how long process can take. Not my first smog! I moved to the east bay from SF! Put some respect on it!!

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!

The owner is genuinely friendly and response fast. I booked my appointment during my lunch hour…read moreand they understood that well. They were quick and efficient leaving me with atleast 35mins to spare on my lunch break. Their pricing is fair or better than other. Do book an appointment in advance because they do have a steady stream of customers. I have already recommended their services to my colleagues.

This place is very honest they do quality work I would recommend to everybody let's book ahead…read morebecause they're very busy. It's not easy to find a good mechanic.

Extremely fast and friendly I will make this my smog spot from now on!!! Very good, thank youread more

Professional customer service, fairly priced smog check service, took us in right away and work was…read morecompleted in a timely manner so we didn't wait long for the smog check to be done.

Fast courteous service. I arrived before the shop opened and had 2 people ahead of me. I only…read morewaited about half an hour for my Smog.

Fast, friendly service. Good price. Comfortable and clean waiting area. Knowledgeable staff.read more

Great service and super knowledgeable! The owner/tech is very kind and helpful as well.read more

Sandro was efficient, kind, and professional…read more I was in and out in approximately 15 minutes. He honored a coupon I found on Yelp for $45.00 including the certificate for our 2009 Honda Odyssey Touring Van with 157,224 miles on the odometer. This is a very reasonable price. Other shops are $73 to $80 including the certificate. April 7, 2026, also the shop is clean compared with many shops that look like a bomb hit them. Visit Sandro when you need a smog.

Amir was pleasant, no wait, fare pricing, great service…read more My new go to smog shop here in town...

Response time was quick. The service was quick and easy…read more Got my car smogged and processed in about 15 minutes.

Great smog station for older cars, prior to 2000. Great customer service, super friendly staff…read more Fast in and out. Highly recommend.

Place is super bad the obd emission test pass but they didnt pass my car because they said smoke…read morewas coming out the pipe like come kn doesnt the car supost to do that super bad service they will scam you do not come here

Stopped by here after finding them on yelp. Lo and behold, only 1 other customer in line that was…read morehere for a different thing. They took the boos lady's car right on in and started the test. I know the car will pass. All in all, good price for the check and the service was quick and simple. I recommend coming here for your smog check needs. Support your local establishments..

Great service. Bare bones smog shop means best price in town…read more Support this one man operation.

Quick and pleasant experience for a Smog test of my sprinter van. This smog check can fit vans and…read moreRVs pretty easily. Price was extremely fair.

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!

This is a hidden gem! I tried to get a smog done at another local shop and when they couldn't take…read moremy car for the second time I jumped on Yelp to find someone who could get my car. My first call was to Walnut Creek Smog and they told me they needed to calibrate the machine and to come in an hour. I showed up and was greeted and they quickly got to work. They smogged my car quickly and were priced fairly. The employee who helped me was super friendly. They just won us over as new customers!