After our former shop ceased smog tests, we were referred to Smog Guys who excelled in all metrics. 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! read more

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

Y'all know the drill. It's time for a smog. This place is awesome. Kind, quick and they have snacks! I've taken my RV and van here and I'm done and felt taken care of. They also can do your registration as well. I highly recommend this place if you need a smog. P.s: they also support other businesses which I love. read more

Smog Guys - Smog Check Stations Near Me - Concord, California

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Fast accurate service nice job. and I went into smog an older vehicle. Other smog places didn't want to do it as it had to go on the Dino these guys did it quick and easy. read more

I couldn't ask for any easier smog check. Professional, efficient, offers coupons via Value Pak, and even had snacks as you waited! They also can help you process car registrations. This is my new place to get my cars smogged! read more

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Smog Guys was recommended to me by a coworker and I am extremely happy I took his recommendation. Staff was very friendly and helpful. They took care of my smog check and vehicle registration super quickly and saved me a huge headache from having to deal with the DMV and explained every form and charge. I was literally in and out in about 30 minutes. I would highly recommend this place to anyone and everyone looking for this service. Worth every penny. read more

Great value & very quick. They even offer a DMV issuance of your registration sticker for an extra 30 bucks. They were also very friendly and made it all very convenient. read more

Very fast and easy. Less than 15 minutes to complete the smog check. Highly recommended!

Came here as a walk in on a Saturday and service was quick. Marco Gave outstanding customer SERVICE and had a great attitude

Used their DMV services to register a new used car. Great service and very friendly. Avoid the DMV hassle, great value for the little bit extra they charge. read more

Went in for a smog cert and was told several vehicles ahead of me. Asked to make appointment so I wouldn't have to wait in their really dirty waiting area and was told no. They won't do appointments. Do not recommend. read more

Every other year the DMV registration renewal notice arrives with the paperwork for a smog check. And that smog check--while good for the environment--is, for most of us, an added expense that's a slight inconvenience at best and a headache at worst. While I have mechanics and others to whom I am loyal, I've always navigated uneven terrain with smog checks, often going for a place running a special. The service has sometimes been all right, other times indifferent to unashamedly annoyed, and the wait times have ranged from a few minutes to hours. This year, when that DMV renewal came, I took a chance and chose at random a place closer to home: Smog Guys. And what a wonderful surprise. Were they the cheapest? No. Was the cost within "normal limits"? Absolutely. Were they fast, professional, friendly, and thorough? Without question--and that's why I'm now a fan of Smog Guys and why you should consider taking your vehicle there for your catalytic and smog needs. When I arrived, I was wary. But even though I had no appointment, I was welcomed into the little office and offered not only a comfortable place to sit and refreshments on what was a hot and uncomfortable day, but also genuine hospitality. The receptionist was such a pleasure--friendly, expeditious with my paperwork, understood my needs, and happy to engage in a wide-ranging and candid conversation. Other customers came and went, and each received her full attention. The flow was steady and brisk. Out the office window, I could see the technician on the floor, and he wasn't wasting a moment. Vehicles came in, and like the pro he was, he seemed to know every make and model he looked at. Fast, focused, and precise. When he popped into the office to say my vehicle was ready, I was stunned--so soon? Was that right? It sure was. Everything had been done right. There were no issues, no up-sell attempts, just a clean bill of health for the DMV, a thank-you, and a smile. As I was getting into my car, I paused and asked the tech if he knew a place that specialized in a particular make--my girlfriend's car had been giving trouble, and she'd gotten conflicting diagnoses and outrageous estimates elsewhere. He searched his computer, then said, "If you trust me, I have a friend who works at a good shop not far from here." He wrote down the address and number. Later, my girlfriend took her car there and got a completely different diagnosis and an estimate that was a fraction of what she'd been quoted. They got her business. So my experience at Smog Guys turned into a win all around--and even beyond Smog Guys itself. Going forward, I'm sticking with Smog Guys. If you value great customer service, reasonable prices, and top-tier work, you should check them out. I recommend them without reservation. read more

Took my old Honda here to get smogged. Was in and out in 15-20 minutes. Alex was very professional and courteous. I recommend this spot!

I am so happy I tried Smog Guys. I took my 2016 Kia Soul in to be smogged. They woman at the counter was friendly and took care of me immediately. I was in and out in 20 minutes or less. I will reccommend this shop to others. There prices are fair and if you need it, they offer registration services. Thank you Smog Guys. read more

I've always had a very positive experience here and it is where I send my wife when I get get one of our cars. She just wants to be treated fairly and respectfully and she gives them two thumbs up. read more

Straightforward price with without having to have a coupon from somewhere. They have two machines so you don't have to wait too long.

I came in on an early Friday afternoon for a smog check and was out in less than 10 minutes. Fast service and definitely a one-stop shop. They can renew your registration right there, stickers and all! I'll definitely be back. read more

Nice folks , fast service and easy experience while you wait. I usually don't even shop around , they are aligned with area prices with service over and above read more

New to the area needed a Star Certified Smog for my Vehicle Renewal. Called M N Star Smog day after Christmas, the owner who answered was polite and provided me a quote of $50 for the Smog. Brought the vehicle, quick to service no less than 10minutes. Friendly service, Apple wallet payment offerings and as stated $50. Will come back again and I highly recommend. read more

Smog Guys - Infiniti G35 2003 - Star Smog Check Service - Smog Check Stations Near Me - Concord, California

OK business. Most employees are polite and communicate well. But will probably go somewhere closer to home next time.

Where do I begin......brought my 2001 diesel truck, after being repaired, here for smog test. No waiting, but failed the test. was told "engine computer"needed to reset before test could be completed. James explained I just needed to drive the truck, allowing the computer to "reset". I was allowed a window of 30 days to retest, as many times necessary, with no extra charge. It took 5 visits (and driving over 200 miles) before truck computer finally reset and test could be completed and "smog certificate"automatically sent to DMV. Each visit James was polite and accommodating ! He even printed out instructions on how to drive the truck to hasten the reset ! I would be remiss not to mention Kamal, the technician who was responsible for completing the last test !Great service and I will recommend anyone to have their vehicle smogged at "The Smog Guys". btw-James is now at the Antioch outlet and I would recommend anyone to "pay him a visit". You won't be disappointed !! read more

Smog Guys - Smog Check Stations Near Me - Concord, California

Very friendly and knowledgeable service technicians. Comfortable waiting area with coffee and snacks. Return customer and sending my friends and family. read more

I brought my 1999 Ford crown Victoria in yesterday to have it smogged. I have been going to the shop for many years now and never had a problem. The technician that works on my car was unfamiliar with this model.For starters he said he had disabled the traction control which he found in the glove box.After about 15 minutes he came back in the office to tell me it didn't pass and that he had a problem with it. He said the engine overheated and coolant all over the floor. And the check engine light came on. He said the coolant was gushing out around The cap to the overflow . So I parked it nearby and got a ride home. After returning an hour later with tools and plenty of water I refilled the Radiator with only 1 gallon of water to fill to top. I drove home through Concord instead of going on the freeway because of traffic. The car didn't overheat, And the Radiator didn't leak a drop. I plugged in my code reader and it shows 3 fault codes. 1299 Cylinder head over temperature protection active. 306 misfire cylinder 6. 308 misfire cylinder 8. After reading the repair book for my car I figured out why the check engine light came on. What I don't understand is what caused the engine to overheat so badly. The technician wasn't paying attention to the temperature gauge And didn't shut the car off when he saw it was in the red zone and coolant was gushing out of the Radiator. I would expect a smog technician would have at least a little experience with the basics of automotive repair and what not to do. If you see coolant gushing out and the temperature gauge slowly getting hotter it's common sense to immediately turn off the engine before it overheats so badly. Im going to talk with the owner or shop supervisor about what happened and I'm hoping that his negligence hasn't caused any serious damage to the engine. Overheating the engine could cause the cylinder heads to warp and then you have a blown head gasket and possible cylinder, valves, piston and ring damage. All very costly repairs. read more

Always super efficient. Service is provided fairly and in order of arrival. Definitely recommend.

Quick, friendly, professional New owners have 3 other smog places, know what they are doing! read more

Melvin is no longer here and under new management, Smog Guys. Prices have been jacked up two fold. Recommend shopping around.

I found out about MN Star through my prior smog shop. MN Star is conveniently located on Market Street in Concord. My smog was fast, about 15 mins tops and I was on my way home! This is my new spot for star smog checks. Thanks! read more

My catalytic converter was stolen about the time I needed to renew my registration with smog test, so I had it replaced at West Coast Muffler, which is right next to MN Star Smog. But I came across them on Yelp before really paying attention. So, I took it to them, but there was a problem - I needed to put more miles on it for the smog computer to gather its data. So, I had to drive it for a few days, and returned where it passed the test with no problem. The owner, Melvin I believe, was very nice, and the total charge was $50 exactly, which was just what he had quoted, and cheaper than any other place I checked, including the place I used to go which was usually pretty cheap. The car is 20 years old, but no extra charge for that like some places. They do not make appointment, just show up. But there was just a short wait the first time, which I didn't really mind as the people around there were very friendly, including the muffler shop which had music going while they worked. I went back to the muffler shop a few days later to get some security added to the cat for $200. read more

Great place for quick smog at $50. They are fast like done in 10 minutes. Barely even a wait. Most places that a long time and charge like $100. This place is honest and not ripping anyone off. Highly recommended! read more

Smog Guys - New location! They move 2 stores over - Smog Check Stations Near Me - Concord, California

Very professional behavior dealing with star smog process is very stressful but these guys made this process smooth and stress free I would 100% recommend Marcelo was very quick and acknowledged me despite being busy 10/10 service read more

I called other places they either didn't answer or sorry you need to make an appointment, went to M N smog what excelent service didn't need an appointment just drove in no waiting they went right to work on my vehicle great service thanks it's hard to find that nowdays. read more

Took my car (for the first time in my life) to get smog checked today because of reviews on Yelp. It is walk-in only. It took less than 30 minutes to get my car smog checked (was immediately sent to the DMV electronically) and at $50 was a great deal with great service. Melvin (the owner) is awesome!! I will be taking my car here as long as he is in business. Highly recommend his service. Thank you Melvin!! read more

Recently had a bad experience with another local smog station. This was a totally different story. Great, clear accurate input, and much more reasonably priced. My family has a new g-to for DMV-mandated Smog Checks... read more

I've been coming here for a few years for all of our vehicles - ranging from hybrids to large trucks for smog services. The staff is always attentive and nice and their waiting room is extremely comfortable and even has a cell phone charging station - not that you'll spend much time in it, they're typically quite quick! Call ahead to see when the best time to come down would be - they're great! read more

Smog Guys - Waiting area / cell phone charging station. - Smog Check Stations Near Me - Concord, California

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Honestly what can I say , melvin is really good at what he does and I will always keep coming back here to smog and more thank you melvin read more

Smog Guys - Melvin is my go to smog guy i love this guy - Smog Check Stations Near Me - Concord, California

Took me in right away. Nice waiting room. Friendly staff. Fair price. Free snacks and drinks.

I got my car smogged at MN Star and was in and out in under 15 mins (and that was with one car ahead of me). The employee working was kind, efficient, and helpful and even recommended a nearby DMV kiosk for an easier way to print tags. The price was $50, which is $20 cheaper than the last place we went to for our other car last year. Will definitely be back here next time we need a car smogged. read more

The previous owner/operator of this smog test station, Melvin, is no longer there. Gone also are the reasonable and fair prices. In my case the price was triple what Melvin charged. No, I didn't pay the smart aleck his ridiculously high price. To all of you past customers of MN Star Smog in Concord, I strongly encourage you to take your smog business elsewhere! read more

Came here to smog my civic. Able to fit me in without an appointment and were very quick. Inexpensive compared to competitors

Yea this is the place to smoggy your car or rv amazing customer service and quick service