I have been using Smog Dynamic for years. They are very professional, polite, and trustworthy. They have always been very helpful, and I send everyone I know there. I personally smog all my cars there and all my family does as well. Try them out, you won't be disappointed. I drive past many smog shops to get to them. They are the ones I trust, and that means everything to me. Pro tip: make sure to pay attention to go to the correct smog shop being there is 2 in the same location. Tell them Nasser sent you. I tell everyone to tell them that, haha. read more

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Theo always treats us like family.. Service was OUTSTANDING!! Great price (Better than most smog shops in the valley) I have coming here for over 10 yrs. NEVER have I had 1 complaint.. read more

quick service, great prices. Family has brought their cars here for years, no complaints!

Tech would not even look at my car (1996 Saleen S-351). The smog bay was open. He indicated that he did not want "my kind of business". I tried to explain that i had documentation about the car. Again he indicated that he did not want the exposure. Sounds like my car was being profiled. Not a shop for any "specialty" cars if you do not fit the shops customer profile. read more

Theo is a great guy with integrity. Always had a great experience! I highly recommend Smog Dynamics to anyone looking for a fast, affordable smog from an honest locally owned business. read more

Smog Dynamics - Smog Bay - Smog Check Stations Near Me - Modesto, California

I take all my vehicles here for not just smog but also repair and maintenance. These guys are knowledgable and provide great service . Highly recommended read more

Chinese dude told me the car didn't pass and that I had to drive it more so the cars computer could learn the 02 sensor and cat converter bs type shiii but nothing was wrong with them and failed me twice, went next door to freedom smog and they passed me easily, dude also had a nasty attitude. read more

If you want to take your car to lazy rude people dynamic is the place good luck walked in almost acted like what do you want we don't want your business read more

Well.. no wait and $20 cheaper than Freedom Smog next door. What more can I ask for ($50 out the door)?

Great service. Tony was my tech and he was great. Helpful and efficient. Patient and skilled staff and you won't end up waiting for an hour like Speedy Lube. Affordable prices to. Highly recommend. read more

Best smog in town friendly and knowledgeable staff they are also quick not like most places where they take hours and hours in and out here read more

Smog Dynamics - Smog dynamics - Smog Check Stations Near Me - Modesto, California

Someone recommended this smog shop to me and came, Theo helped me out really well and got my truck out in no time really recommend this shop, great prices and quick 10/10 read more

Dynamic smog is amazing and they do great work . Fast , and very professional. Definitely recommend!

Smog Dynamics! Theo doe's it again! In and out so fast! Friendly service and knowledgeable staff. Don't stop at the place you see when you first pull into the lot! Theo is just around to the left. Take my word for it...you'll be glad you did. Thank's Theo for years of fine service. See you next time! Rick C. read more

Always get my smogs here the workers are very friendly price is reasonable also the service is quick!!! Good thing is that they are close to Starbucks as well so if you are waiting and you like Starbucks take a quick walk!!!! I recommend them to my friends when someone asks! read more

Quick easy, no head aches. Tech was friendly, and was able to serve me right away. I se myself coming back to have him check my truck.

I found this place because of Yelp reviews and they were correct. They are fast and helpful. I watched as many customers came in and all were treated fairly and a sense of good customer service. Even those that don't pass seem to like this place because they offer a package with free retest if needed. read more

Great Customer Service! Theo is Awesome! Will be doing business with him for a long time

Upon arrival I was greeted by a very courteous gentleman and being a senior driving over 30 miles because he was willing to do my repairs cheaper than my regular mechanic. I'm grateful to be able to save money I recommend him be was a referral by my brother. read more

Great service! Not only does he do smogs he does repairs. I recently came in for a smog and told Theo my other car problems. He took a look at my car and located my problem like that! He was able to fix my car and smog it within the same day! One stop shop! Will continue going and refer people to smog dynamics! read more

Easy and fast! I had a 9 a.m. appointment, but showed up at 8:30 a.m. and they saw me right away. The test itself only took about 15 minutes and I got 5 percent off for writing this review, which was a no-brainer given the good service. read more

Upping this place to 5 stars because they now do repairs for Smog. Before they didn't and it would be a hassle for you to go get it repaired somewhere else and bring it back. It's a STAR Certified Station so they do any kind of smog related tests/repairs/and certifications. I brought my TL here to have it smogged and was talking to Theo about it's time for my TL to have the 105k maintenance performed on it. He mentioned to me that he is also certified to do repairs for these and not just smog related items. I had him do the timing belt, water pump, spark plugs, cv axles, and power steering pump. Got a good price on the all the work was done, too! In the end, treat and talk how you want to be treated and talked to and they'll do the same to you. I would recommend this place. I've never had any problems with Theo. read more

I haven't had to do a smog and quite some time. However, the gentleman here were courteous and polite. Even after hours. Service was quick and complete. I would recommend this place to my family and friends. read more

Prompt and courteous service each time I've visited for my my 96 Dodge Intrepid, 00 Honda Civic and 05 Ford Explorer. It's just around the corner from a few places where you can spend some time while you wait. read more

The test time was good and the office is nicely air conditioned and the tech was very helpful too. I will go back for my next somg check for sure. read more

This place is horrible I went in for a smog. Pass for everything. But I had forgot a little piece to my filter at home. Instead of letting me go get it real fast. Which I lived 2 blocks away. That's why I even went there. I told him let me go grab it real fast before you smog it. (Reminder piece was a size of a quarter) he straight told me to my face No! This how I make my money. I'm like how can you expect to have a loyal customer with a attitude and poor costumer service. What a scum bag. So now I go to Stanislaus Smog. The best place ever. Steve will take care you. Save your time and money and go there. If you go to dynamic your looking to pay twice. read more

I was in Modesto visiting family for the weekend and had to get my car smogged so I decided to take it to Smog Dynamic. The staff was friendly and helpful with some of the questions I had about cars in general. The price was reasonable and the service was quick, I was in and out in about 15 minutes. I am very satisfied with their service and will definitely go back to have my car smogged if I'm in Modesto again. read more

I can't even give them a single star. Theodore Nguyen is a scam artist. DO NOT BRING YOUR VEHICLE HERE. I brought my truck there on January 27 2016 and he said the truck failed the computer scan and the oxygen sensor and oxygen sensor heater failed. Said to drive it around a little more. I did that and brought it back to retest on February 22 2016, once again it failed the computer test with the same sensors failing. I brought it to a repair center to have the sensors replaced. Replaced the sensors and still had the same problem. Brought it to another smog shop and they said he had hooked the truck up to an OBD2 instead of an OBD1. Not sure if that was true brought it to another smog shop and they told me the same thing. I had the 3rd company do the smog and had no problems. I went to smog dynamics and asked for the owner Theodore Nguyen to refund my money for the 2 fail smog test because he did them wrong, he refused. All I wanted was for him to man up and refund the money for doing the job wrong the first time. He is a smog shop, that's his job. Never once have I had an issue smogging my truck and it's a 2000. So now I will be filing a lawsuit against song dynamic for all smog and repair costs plus lawyer fees. Should have just been a man and own up to a mistake Theodore Nguyen. DON'T USE THIS SCAM OF A SHOP, SHADY BUSINESS read more

This is my go-to place to get my smog checks. Friendly customer service and very helpful if you have and questions. Quick service so I'm not waiting long. I'll definitely recommend this place to people I know. read more