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.

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

Great experience! Mo helped me with my smog check and was helpful. I came here after driving about…read more200 miles and my check engine light had gone away. I happened to be in the area, and this was the closest smog check place to me, so I decided to give them a try. Everything went smoothly and my car passed the smog check! The process was quick and easy, and I really appreciate Mo's help. Definitely a good experience!

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!!

My registration was due. I never go anywhere else. I do not like going to DMV. The women working…read morebehind the counter very friendly and helpful. I was in and out in 15 min. I always take my cars here to get smoged.

It was $73 total in December 2025 with a $15 off coupon. It's near the Auto Center freeway exit,…read moreconducive to warming up your engine on the way there. There were 2 cars in front of us when we went, and they still got us out of there quicker than most smog joints. Waiting room is clean, if stark. There's a bathroom if you need it. But man, the music was SO LOUD. Like, the receptionist was yelling over the music, "OKAY, SIGN HERE!" and when she grabbed the remote, I presumed it was to finally turn the music down. Nope. She just changed it from '00s pop to contemporary country. There's an option for a tip at checkout, which always makes things nice and awkward, regardless of tip level.

Service was very professional, provided exceptional service! thanks for help getting my car smogged…read more.

I would not recommend these people there are overpriced and very rude when it comes down to Service…read moreI would never recommend any of my friends or family to come here at all. Spend your money elsewhere.

Told me one price after service he tried to change the price. Dirty business practices is not ok.read more

If i could give these guys no stars I would, I did a smog check for a 1999 corolla and they charged…read moreme $120 dollars. I have never seen a smog cost soo much. I have 6 cars and this is the first I have ever been smogged for $120. They are lucky that i had to get it done today other places were closed or else I would have never came to these robbers. I was robbed and not even at gunpoint and that's crazy

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.

They finished my Star Smog certification in a timely fashion. Reasonable. I'll be back when my…read moreother car is due for a smog check.

I came in early in the morning with my 2008 Honda Odyssey and I was aware that he would charge pass…read moreor fail. Anyhow he failed me talking about their was smoke coming out my exhaust. Said I needed to take it to a mechanic and have it looked at and then come try again within 30 days for $10. I asked why, what he thought was wrong and he said he didn't want to lead me wrong because he is not a mechanic. To go see a mechanic. That was a bunch of bull**** what he didn't know was that my dad is a mechanic and has his own smog guy in his shop. I could have went to him in San Jose but didn't, instead paid for convenience. So did what smog dude at Chevron told me to do and took my car to my mechanic and he looked at it and their was NOTHING wrong, then his smog mechanic guy did a smog check the very next day and it passed. He said straight out that they cheated me and most likely if I did bring my vehicle back, he most likely would still failed me. So just be careful, I paid $75 for fail, gas to SJ and back and $45 to get it smog check again in San Jose. If my dad wasn't a mechanic I would have paid for more out the pocket.

Dom and Aaron are very knowledgeable, kind, and helpful. We passed smog, praise God!…read more We have a 1996 Jeep Grand Cherokee 4WD with a straight 6, that we have owned for approximately 22 years. Our daughter was 16 when we bought it used with 94,000 miles on the odometer. Our three children learned to drive with it. Our eldest daughter "sold it" back to me about 15 years ago. We have put 90,000 miles on it in all 22 years. Bumped and bruised by the children, paid for since 2004, still gets 22MPG Highway and 12MPG in town. I am grateful. Thank you.

Aaron and Dom we're excellent! Fast smog and handled DMV registration. Excellent service and very…read moreknowledgeable of whole process!!!! Only go here !!!!

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