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

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

If you have a class C RV this is the place to go to get your smog check. I spent a good chunk of my morning trying to find a place and when I called Shawn was very helpful and knowledgeable about RVs. It is recommended to call so you know what is the best time to come in since they get busy with walk ins. Shawn is very friendly and knows how to make sure each client is taken care of, will be bringing all my vehicles here. read more

I was hoping to have utilized services from this location "based" on reviews that I read. But upon my arrival, I did not notice much activity at the location. So I proceeded to walk up to the door to only find out that the doors were locked., I viewed the business hours on the door, which reflected open. I then reached out to their "text" line nicely asking about their hours and was informed shortly after (with no greeting) that their machine was down for the day. And expected to be back up and running the following afternoon. So I had to take my business elsewhere. read more

Affordable! This was the first year my plugin hybrid needed a smog. I didn't even realize it until I went to pay my registration ‍ The owner is really nice & it's first come first serve. I did call ahead to ask busy times. If you go to their website PRINT the $5 coupon - he only gives the coupon if it's printed. The day I went his pos system was down so cash only. So I'd suggest making sure ahead of time. $45 - that's after my coupon. If you're going to Costco & are coming from Sommersville (Auto Center Dr) instead of turning left - pull straight into the parking lot. read more

A 1 Stop Smog - Waiting area - Smog Check Stations Near Me - Antioch, California

This shops post hours on their door open at 8am. It's 8:18am No one is here? This shop was recommended by word of mouth. I won't be coming back here just not reliable. read more

I went there today and was SO impressed with this Smog biz. Only paid $55, Shawn (I think the owner) was professional, informational and kind. My smog was done within 20 minutes. I passed, YAY! I will definitely go back and tell everyone about this place. Especially since one smog biz in Oakley (which I stopped by twice) had zero customer service, borderline rude (I felt the guy didn't even want my business) and another smog company in Brentwood was charging $89 for a smog. WOW! Places like A1 Stop Smog are RARE GEMS! Thank you for your service to the community. Affordable and friendly! read more

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Great spot for a smog check. Very nice guy, offered coffee and water. Waiting room was cool AC nice seats and magazines. Best part is arcade game while you wait. Best price and service around! read more

A 1 Stop Smog - Arcade with all the games. - Smog Check Stations Near Me - Antioch, California

This has always been our go to place to get our cars smogged and we are always satisfied. New owner is fantastic, super friendly and since he was formerly an employee here, really knows the business. Love hearing he has big plans for the place to make it even better. Highly recommended! read more

Went in for a smog check on my 2015 GTI today, and the owner was super friendly and diligent with his work all while making me feel at home. Unbeatable prices, A/C controlled waiting area, very Spacious parking area and newer clean plaza overall. the high quality modified arcade machine made the time fly by as I found myself having to pay before giving "Time Crisis 3" a second try! Haha over 15 years of getting my cars smogged and this place is the best, hands down. read more

This was the first time i have needed to get a smog check for my hybrid. Didn't know where to go. Two friends recommended this place and i was so glad i took their advice. No appointment. Took about 15 minutes. $60. Electronically sent the report to DMV. EASY and SIMPLE read more

Always a professional, friendly, and even educational experience whenever we get our smog done here. Recent changes in the office lobby includes a nice surprise : a video game arcade station to help pass the time! Thousands of available classic games from our younger years to enjoy! This was cool. Spent my time playing Killer Instinct while waiting for my car. More shops should do this! LOL! Service is always tops here. Thanks again! read more

A 1 Stop Smog - All the classic games while you wait! Retro coolness. Excellent service here! - Smog Check Stations Near Me - Antioch, California

This place is the best for smog checks! My man Shawn Zazi was friendly, fast, and efficient. Have used his shop twice now and plan to return for any future checks. Great price too, $50 bucks out the door with coupon! read more

I'm a little conflicted about the service I received from here. The actual process was quick and fine. But the first time I came here, they denied the coupon I found online because I didn't print it out. They even had a sign that said we needed to have a printed coupon. A few months later, the second time I came here, I printed out the coupon and presented it. He accepted and I just sat in the waiting area. There was another customer that was there before me and when it came to payment. The guy just provided a coupon code from his phone for the discount. Mind you, the guy is standing in front of the sign that states that coupons needed to be printed. The worker took that code from him but didn't want to accept it from me the first time I went there. I don't know, I'm a female and I just feel taken advantage of. Although the guy was nice, I don't think I'll come back here next time. A customer is a customer, I shouldn't be treated differently because I'm a woman. read more

Great service! I arrived with a few people ahead of me. The estimated wait time was accurate. I would definitely recommend this business to any friends or family looking to get a smog check. read more

I was in need of a smog test for my registration renewal. A1 Stop Smog squeezed me in for an appointment on the same day. The price was fair and the job was done quickly. I recommend this business highly for your smog test needs. read more

Went to get smog, not open. No sign on door. A lot of people came by. I called several times. Someone finally answered. He said they were closed down. A sign on door would have been nice! read more

First time getting a smog check, Shaun helped me and was super friendly and helpful. While I was waiting, which it was not long at all, I found myself staying longer just so I can keep playing the arcade machine in the lobby and had a blast talking to him. Price was amazing, and I would definitely come back here again for my smog checks. 100/10 for sure. read more

A 1 Stop Smog - Arcade machines - Smog Check Stations Near Me - Antioch, California

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Great service! Fast and very reliable! Cost effective too and exceeded my expectations! Highly recommended

Shawn is great. Brought in my BMW and he was super hospitable; knowledgeable car guy and does things the right way. Highly recommend - some of the best prices around. read more

I have been coming here for my last 4 smogs, guy is straight to the point and doesnt take long.

Great price and responded to my Yelp service request very quickly. I was in and out in 15 mins! Will def be back and highly recommend!!

Such a nice guy .He even let my kids play the video game that he has on the shop. Shawn even play with them. read more

A 1 Stop Smog - Enjoying the video game - Smog Check Stations Near Me - Antioch, California

Great customer service. I have to many cars and seem to have to get one smog every other month. This is the only place I go to. read more

Had my car smogged here today, nothing short of a great experience. Quick, friendly and cost efficient! What more can you ask for?? Will definitely be returning and referring! read more

This is always my GO 2 for SMOG needs. My man always takes care of me and all of my vehicles quickly, easily, and affordably. I started coming to A1 when I moved to Antioch from ESSJ in 2016 and Bring all 3 of my vehicles here as needed! Value and customer service are number 1 and the awesome personability is a plus. read more

When I first patronized this business the man doing my smog check said my car wasn't going to pass smog because there was a "crack" (scratch intentionally made with a tool) on my engine block. I explained to him that it wasn't a crack but a fresh scratch and he told me he was going to fail my test for this and other reasons. He suggested I call his friend who could get me a discount on service and help me with a rebate of some sort. I called his bluff refused the additional service and told him to fail me so I could go somewhere else. I returned to the waiting area and was told my car passed after all and the amount I needed to pay. Fast forward 2 years, I just got a smog check on the same car and passed without a single issue brought up by the technician. Only work done on the car in 2 years was 1 oil change. I recommend Express Smog Check on Railroad in Pittsburg. No wait, area dedicated to smog checks only in back of business and test took about 10 mins. read more

Shawn is a great young man, very friendly, and a pleasure to talk to, whether it's small talk about cars or anything else. He did a nice, quick smog check on my 2000 sable this morning, and she passed with flying colors, (with no white smoke coming from the tailpipe, inside joke) See ya again in 2024! Thanks Shawn! read more

A1 Smog is the best I take all my vehicles over here. I have been doing so for a number of years. He is quick and a experts at doing smogs. He also has great pricing. Next time you're looking for a smog test check out A1 Smog. read more

This place will be my new smog place. The general working there was super nice and was very funny telling stories and cracking jokes. The price was $55 which is not bad at all. So look no further go to A1 smog for the best service in Antioch read more

The shop operated by one man and he still makes it work. Fair price for a smog check. read more

A 1 Stop Smog - Prices as of 14 October 2023 - Smog Check Stations Near Me - Antioch, California

Speedy, friendly, and overall great value and service. They even have cold sodas while you wait. I won't hesitate to frequent their establishment in the near future. read more

Very clear on information you need to have your car smogged. The gentleman that help us was very knowledgeable and very helpful with information. Unfortunately our car didn't pass test, we will be returning in a week to try it again our car has just had some repairs so it needs to driving more in order for thing to cycle through. read more

I want to express my sincerest gratitude to the people operating this location. They were totally awesome, and although the DMV created some hassels, once the systems were up and running, the work was done professionally and quickly. As a family run business, I always want to lend my support, especially because the fees were so incredibly inexpensive. Thank you again for all your help and support. Antonio Di Giovanni read more

First time here! I was second in line this morning to finally get my car smog check done! Was in and out with in a 1 hour! It taking about 1/2 hour for each costumer... Very friendly service and the place is very clean! The guy today was very spot on and meticulous in his job! A1 gets an A rating from me today! They have coupons for a reduction in price, but be sure to print it out a head of time! Thank you A1! read more

A-1 smog is go to for a reason !! Fast reliable and consistent! Best in the Bay Area!

I happened in after trying a couple of other smog shops. Everything went super smooth and I was charged a reasonable $50 for a 2007 Toyota sedan. The guy was very, very nice and I would go back again! Excellent. read more

A 1 Stop Smog - Prices Posted as of 6/14/21 - Smog Check Stations Near Me - Antioch, California

I sent a message through Yelp to inquire about service. Prompt response, reasonable prices, great service that will have you in & out in no time. read more

Perfect location. No appointment needed. Next to Costco. The guy doesn't waste his time or yours. Print the coupon on their website and save yourself five bucks. read more

Fast and efficient service. Owner was very friendly and personable. Convenient location! Prices are accurate and straight to the point. Very affordable! read more