The service and speed of smog tests here are second to none. Noe is very professional and polite. He has great customer service. The price is very fair as well. I would recommend his smog and additionally DMV services to anyone looking for great service read more

Super quick and friendly service! They can even get you your tags once it passes for an additional fee but didn't need it at the time. Would definitely recommend them if you are in need of a smog! read more

Good vibes and fast service. I was in and out in less than 15 min. Thank you for the good smog experience.

Been coming here for the last 4-5 years. Friendly, prompt, informative, good pricing. Thanks Noe!

I went to 3 shops around the Colton location to try to get a 'Star Smog' before 5pm because shops usually close around this time. Not this place, they close a 6pm! Perfect for the 9-5 workers. I arrived at around 4:30pm and was in and out in about 20-25 minutes. My 2002 WRX passed with no issues. This location mentioned that there was a charge regardless of pass or fail, which wasn't a problem. Smooth process all around. Parking is marked clearly, lobby is air conditioned, clean, and workers greeted me promptly. There is an open glass to see when your car is being tested and no delays when it is done. I will be coming back here for future smogs. Very nice people! read more

Outstanding customer service!! I was in n out within 10 to 15 minutes to get the smog check. Price was very inexpensive compared to other smog locations in SD. Friendly and clean environment. staff did not try to sell me on additional services that I did not need. I definitely recommend this location. read more

This place was recommended to me by my mechanics at Proshop Automotive. I arrived, checked in, and waited no more than 10 minutes. They also offer DMV services where you can pay your registration and get your car tags, as well. I have AAA so I didn't use this service but it's good to know. Thank you Diaz Smog for the excellent and quick service to smog my vehicle! read more

This place is efficient and conveniently located with opening hours earlier than any of his local competitors. The owner was friendly, explained everything clearly and didn't collect payment until after the service was complete. I highly recommend! read more

All I have to say is WOW! Honestly, we had such a great experience here. We went in today around 10am for Star Station SMOG, we were in and out in a matter of 10 minutes. I didn't get the name of the gentleman that helped us but he was the sweetest! The smog was only $50 and we were also gifted 2 very nice pens ! The place is very nice inside, furnished with comfy couches and complementary water . I highly recommend! read more

This is the second time I have come here and I would like to say it was another great experience. I went early Saturday morning to avoid any busy-ness, there was only one car ahead of me. I only waited 20 minutes total and they helped me with my stickers and sent my registration info to DMV and gave me corresponding paperwork. I would like to say they have great customer service, the gentleman that helped me was very nice and informative on the process as I renewed my DMV Registration. It might be funny but they even gave me a cool company pen, which made the going out of the way experience even better. I recommend this place if you need your car smogged! read more

The Desolation of Smog! Diaz Smog is located several minutes away from the 10 Freeway in Colton off of Mt Vernon. It's sorta small and can be easy to miss so, like Ace of Base, I hope u see the sign (and that it opens up your eyes;) I have been here a few times and it's always been great. As of writing, it's $50 for smog test if it passes and $40 if it doesn't w/ a retest charge of $10. No appointment is needed, just bring your vehicle in. Last time I visited I waited about 12 minutes and was back on my way. If you need to get your vehicle smog he'd why not give this place a shot? Granted their waiting room isn't much to look at, but their customer service is good and their speediness is great. read more

Diaz Smog - Smog Check Stations Near Me - Colton, California

This place is fast and easy! The team there is friendly and efficient. I was in and out in 15 mins. I was able to get my registration sticker and smog completed. This is a one stop shop for car registration stuff. Support this business, you will not regret it!! read more

Great service. The serviceman was very professional and friendly. Very easy going. This place also does DMV services. I would recommend Diaz Smog for the great customer service and professionalism. read more

Diaz smog is great place to get a smog also you can get your vehicle registration there and your tags very convenient on top of that you get great customer service I recommend diaz smog read more

I have taken 2 cars here. The first time they they did a good job this time NO! If you do not pass the first time they CHARGE YOU TO REDO IT! I have been getting my cars smogged for years and anytime it did not pass they told me to fix the issue come back and they will redo the smog for free. NOT THIS COMPANY! I called to see if this was a mistake a guy the tells me "By the state of California...." I WOULD RATHER PAY SOMEONE ELSE TO DO IT! YOU PEOPLE ARE THIEVES! read more

If you need a smog, GO HERE! Fast, efficient, and reasonable. They also sell stickers for $25 if you don't want to wait for the mail. I'll definitely go here for future smogs! read more

I've been going to Diaz smog for several years now. He's always polite, professional, and knowledgeable. If you need your tags right away, he can get them for you. read more

Diaz Smog is the place to go for your smog check and DMV needs!! They are very helpful, pleasant and knowlegable.. I will definately return for my next smog and highly recommend Diaz Smog to anyone who asks. Thank you!! read more

Went in for a smog check, I was in and out within 30 minutes, the service was great, the employees are friendly and reliable. 100% recommended read more

I had a coupon for another test site and when I went there they were closed. Found Diaz Smog Test Only. I called and the person told me they were open til 3 and the total would be $55. I came here and was greeted right away after he finished with the person at the counter. Noe the owner helped me. He was kind and explained everything I asked. I waited in a well-air conditioned area. He said it would be 12 minutes, it was timely! Experience was very positive. read more

Always great service. Friendly and know what they're doing!!! This is my place to go always for my car needs and registration services :)

Awesome experience. I appreciate their honesty and service. I was in and out within minutes. Price was beyond fair ($50). I wouldn't hesitate to recommend anyone to come here. read more

This place is great ! Went in for a smog and I was helped by a really nice technician I believe he also did the smog. Super quick ! I very much recommend coming her for fast service and good customer service!! read more

Great sensible place. I've had the majority of my cars smoged here since my late teens. This guy is very fast and has great customer service. He is also transparent and shows you everything he is doing. I've recommended Noe to many people and they've all been as satisfied as I have. Give it shot! read more

friendly people, good prices. only $50 for a smog check was in and out in 20 minutes. they also offer dmv/tag renewal services if you want to avoid the annoying dmv lines read more

Very fast transactions and I got my registration done quicker than any DMV I could ever find. Its a little small but that does not matter when you walk in and out with a new registration. read more