Great service......I was in and out in 15 minutes. Getting a smog check is always on the bottom of our list of things to do. Going to Guy's Smog was easy and quick. Thank you for your excellent service! read more

I went to Guys Smog for a smog inspection. In looking to clear two faults it did not seem they knew what to do. They recommend changing the spark plugs and charged me DOUBLE what the cost should be. It did not fix the problem. It appears they were recommending repairs without knowing what was wrong. (Another shop diagnosed the problem correctly and made the right repairs.) I would not recommend you take your car to guys Smog in Martinez. read more

Very professional guy's. If I had any questions about my car, they was able to tell me right away on what was going on. Their customer service was great as well. I highly recommend them. read more

This place is the best! Will and his father really took great care of my car, provided thorough details of what was wrong with it, and went above and beyond to make sure my car was in good shape! 100% recommend this place! read more

Quick easy smog checks. guys are very fair and reasonably priced, not to mention quick. Will be a repeat customer for as long as I live in the bay area! read more

I would highly recommend this company if you are looking for not only Smog services but any basic auto services. They are quick, efficient and the company is family owned and run. I appreciate the customer service they provide and their willingness to help even when they are swamped. Thank you for your service! read more

I needed a quick smog after dropping my FIL at the VA. Guys Smog got me in and out in 15 minutes! It's a small shop, but def pros here!

Very pleased. Wasn't ripped off. Used an online coupon. Nice waiting room. They've been in business 14 years

Took my car here on 02-01-19. I was in and out in less than 15 minutes without an appointment. Had such a great experience. Thank you so much! I will definitely come back next time. read more

Only place I will take my vehicles, always great service and always want to help you figure out a issue with he vehicle when it won't pass smog. read more

I knew this Italian CPA. Luigi was his name. Every year he'd go back to Italy to spend a few months. One year he bought and installed a dishwasher in his Italian House. His neighbors would say to him, (in Italian of course), "why do you need a dishwasher, what's wrong with your wife." What does this have to do with "Guy's" smog ... . Nothing, except that Guy is also Italian which may be why that numbskull couldn't understand him. Then there was another reviewer who complained about the charges for the paperwork which comes on top of the discount smog test. That's Sacramento's cost not Guy's. I have gone to Guy's for about 5 years now with various cars and I've never failed to be in and out in less than an hour (it's usually 30 minutes). He does give out and honor coupons which is why my smog test INCLUDING paperwork today only cost $48. The smog test place near my house approaches $100 for the same thing. That reviewer who said the bad words about my man Guy needs to not only grow a brain but grow up and pull his head out of his posterior. P.S. For those who complain about a $10 fee to check air in your tires!! He's not a tire air tester station and that's not his business but he's required to ask and that's the cost of the labor. Complain to someone in Sacramento or test your own air. read more

I could not understand what the guy was saying about why my car didn't pass? I finally gave up & asked how much it would be to repair & he told me"it might be very expensive." $10.00 to check the air in your tires? That is about the most ridiculous thing I have ever heard. Just OK,nothing great service wise & the coupon for a $29.99 smog ends up costing over $50.00 so whats the point of the coupon other than to lure customers in? read more

I've been going to Guy's Smog for many years. I don't live so close but I found him to be honest and that's important to me. He's always helpful, polite and professional. At times his son has been working in the office and is also polite and professional. On my latest visit, Guy told me that he's now repairing cars as well as doing the smog. I'm so glad to hear this. There are so many repair crooks out there, and we need more honest people doing this job. Guy told me that he has a great deal of experience fixing cars and it's pretty obvious as his knowledge of cars is great. Everything about Guy's business is good. It's worth going out of one's way for. read more

My fiancé took our Mitsubishi Outlander here to get a brake and inspection test to take to the dmv and they were pretty fast and not too pricey. They got it done within a couple hours and let him know that we needed to get new brake pads done before he can pass the inspection which was fine. Good job guys! read more

Efficient, not overpriced, and helpful. The guys wasn't particularly out going, but he was very helpful making sure the DMV got my paperwork for a smog check. read more

In and out in about 15 minutes. Yeah, asked if I wanted to pay to have the air checked in my tires. Asked rather apologetically and said he was required to ask. Simple vehicle, simple service, no hassle and reasonable price. read more

Wow, yaer after year my entire family uses Guys Smog. Just fantastic

Guys smog is the only place I go. The owner has been working with cars all his life and really knows what hes talking about especially when it comes to getting a smog. He always gives me advice about my car even tho he has an extremely thick accent and I sometimes have to ask him to repeat himself! ( ha ha ). I love this little family business and got a great deal from them with a coupon! Don't forget to bring a coupon! Also don't forget to read the fine print. I have witnessed people getting extremely upset by not reading that if they have a junky old car it will cost 10 bucks more. lol But I recommend this place if you want a quick in and out, plus there is extremely rad photos displayed inside! read more

Just there this morning. In by 8:30 out and back home by 9:00 for less than $60, then I logged into the DMV's website and registered my car. The station is convenient for anyone who lives or works in Martinez. read more

Love this Guy! We have three cars and need smogs all the time. My son plays with the little plastic motor on his desk and we have a great time. This is the place to go. read more

Absolutely horrible This place went ahead and charged me the full price of a smog test knowing in advance that it was going to fail regardless. They saw the engine light was on when he started filling out the paperwork but instead of being honest and upfront they went through the entire test just to get there money. When I questioned them they became rude and obnoxious ,almost like they were used to such criticism. The middle son was very rude. I rate this place a 0. read more

Reasonably priced , friendly and fast what more can you ask for? It literally took 5min for my smog. I'll for sure be back!!

Gave me a great deal on a SMOG for my car, and they got it done quickly. Thanks!

I've been going to Guys Smog for over 5 years. I was recommended by my mechanic and I have found him to be reasonable in price, extremely knowledgeable about his trade, patient, and has gone above and beyond in working with me. He and his son have been in Martinez for many years. I have taken my cars to him for many years and will continue to patronize his business. He takes his time to explain the process, I had gotten my car smogged by a different station in Vallejo, (it was close to my work) and the car passed but because the station smogging couldn't see the number on the converter, they failed the car. Guys Smog took the time to put the car on a lift and find the number. (they don't have to do that, but Guy's Smog went the extra mile for me). I would highly recommend this station, they are also open on Saturday which is so convenient. read more

This place is great. Always helpful and polite only thing that would make it better is if they were open Saturdays.

I love this place , my husband took his van there a year ago , so even thought I live in pleasant hill and have smog places all round me, we were so pleased with the service prompt, quick, reasonable priced , friendly , no hassle whatsoever I had made an appt which I couldn't make the time I had scheduled, no problem they said just bring it in 10 minutes I was done! I will recommend to my friends and if needed we will be back ! read more

if you need a ac for you car this is the place to come, i brought my honda civic 2007 for new ac refill for 99.00 great price compare to business around so happy great affordable price this guys are friendly i took them about 25 minutes to refill ac its working so cold i love it thanks guy read more

Guys Smog has that small town friendly atmosphere that makes it fun to have your car smogged! You pull up and you're greeted immediately by Guy himself. (He's got a very charming Italian accent.) The nice thing is you get in and out fast ... AND the price was better than any of the other shops around. What can I say ... it's always a pleasant experience. (He even takes appointments!) read more

I'm giving a two star because my car did in fact pass smog. The main man did not make eye contact very much he was not polite either. I called a few days before to get a quote and he said that it would be 48 dollars after tax. I get there and i am told it will actually be 58 dollars after tax. Not that ten dollars is much of a difference but Fish and Bait is extremely illegal and I think it's BS to run a business and behave like that! I will never go to Guy smog again. Instead I'll go to the guys on Pacheco who have a much better review! read more

Went in for a smog check. They got me in right away and I was done within 15 minutes. Excellent price and nice guys. I like places that are family run and down home. I will return read more

Looked for a place to smog my car last minute. In and out 5 minutes! Good customer service and service! I will for sure return next time I need a smog. read more

Got an online coupon for them and called to make sure the charges were right. they were.... competent, immediate and great service and my 17 year old car passed! i was elated. such a nice family business, good to see. very polite, personable yet professional people. i'll see them again in 2 years. grazie to these "guys" ;) read more

Do not bring my car always passed easy and he charged me for gas cap said failed and I bought still failed due to sensor and took coupon paid 51.00 and have to pay for 're test sucks but he sure knows how to scam not an honest person read more

I was really pleased with the excellent service of this smog check station. The technician was very professional, friendly, polite and very helpful. The service was fast and accurate and the price was just right. Two thumbs up! read more

Just had my van smoged here and William was very nice, professional and friendly. He got my van smoged very quickly. I discovered they do a lot of other mechanical work as well so since my vans engine was making a disturbing squeaky sound, I left it there to have it evaluated. It needed a belt and two pulleys and was repaired in a timely manner for a very reasonable price. Guy was really nice and professional as well and made sure I understood what they had done to my van and even showed me the worn parts they replaced. The most important aspect of this experience to me is that I felt really comfortable about having them do the work and I trust them. I've had issues with mechanics before but I had a good feeling about Guys and I'm happy I went with it. I was not disappointed. I'm going to go back if I need any more work on my van and I would definitely recommend them to anyone. read more

I used to take all three of my families vehicles here without any problems. Just a couple of months ago, I brought my truck in and it didn't pass. Guy told me that it was probably because I'd just changed the battery recently. He said go and drive about 500 miles or so and then come back and he'll test it again. He said this would probably fix the flag that was showing up in the computer. I did just that, except I came back 60 days later (i don't drive this vehicle very much). He said I'd have to pay full price to do the test again !!! When I asked why he said "You only have 30 days to bring your vehicle back in". NO WHERE in his shop, or on the receipt does it state this. I just left and took all my business elsewhere. BE AWARE !!! Now on his website it states that he'll re-test for $10.00. What's with that, he didn't offer that to me, just wanted the full $50.00 because it was a truck. read more

I ignored the poor reviews and was not surprised at the prompt service and cordiality I received. Communication is a 2 way street. You treat the person kindly and they will treat you the same. I'll take my other car there tomorrow! read more