What's to add? This place is excellent. If you schedule during the week, you can often get same day service. I have had three different vehicles tested here and have always been happy with the service, price, and the customer experience. The owner is very courteous and takes the time to go over the results. In my case, my cars have always passed the first time. Regardless, I've never got the sense that he would try to take advantage of his customers. Highly recommended. read more

Went to another place that was $85.00 for my suv, so I came here and the owner took me in right away:) I had a coupon and it ended up costing me $40.00 total:) Very happy here. FYI I brought my 2002 Mustang but since it had muffler issues (dual muffler?) they werent able test it. read more

Been here a few times, consistently great service! Quick and affordable. Definitely will refer friends and family.

What an easy process this was. Exceptional customer service, in and out in 10-15 minutes, and $40 out the door. Great place to get your car smogged. read more

Don't review much but I have to share this place. Khanh is the man! Very knowledgeable and super helpful. In and out times are unbeatable and the front desk employee(s) are super friendly as well. read more

Took my car for smog test. Receptionist was very nice and professional. I was in and out in less than 20 minutes. I will recommend this business to my friends and go there again next time I need a smog test done. read more

Always take my cars to Khann & his shop & always make my appointment. Pull up, check in & about 10 mins later I'm on my way. Been taking my cars there for years and they have always been professional, thanks for great service. Definitely a recommendation!!! read more

Absolutely fantastic service. this place is as fast as the other reviews state. i swear i was in and out in less than 15 min. everyone must go there for their smog tests, cheap as well. read more

Having been in the auto industry for nearly 30 years, and being a former a smog tech myself for 20 years, I can tell the good shops from the bad ones. This is a good one. You are not going to get hustled, and the price is reasonable. $35 out the door with the coupon. read more

Called this morning to make a appointment and they got me in right away. Had my appointment at 1:45 and the front desk clerk was very kind and the mechanics were very fast. Very happy with their service. Definitely will be coming here for now on. Thank you Mchenry smog center for you fast and friendly service! read more

Excellent customer service. Fast and courteous with a clean waiting room. Very low prices, no point of shopping around. Ive paid a lot more at other smog places on McHenry and received bad customer service. read more

I brought my 2010 Toyota Prius to this location today, and I am quite impressed! I originally had an appointment for tomorrow (August 12), but the receptionist was kind and professional enough to call me and let me reschedule for today. The technician, who goes by the name of Khanh Dinh, is extremely fast, efficient, and friendly. He immediately took my car keys and got straight to work after I walked up to the receptionist to fill out paperwork. I spent what seemed like only five minutes in the office waiting for my car, which passed with flying colors. read more

Quick, reliable, nice. The owner is a pug lover and there were lots of knickknacks for my daughter to look at while I waited. $40 out the door and within 20 minutes (but I DID make an appointment just in case). Highly recommend them. read more

Kanh was great. He and his son gave us nice, friendly, quick service! We were in and out of there in less than 20 min. I will definitely use them again in the future! read more

The lady is a really nice person. Money wise it's cheap if you got a coupon. They do charge $5 extra if you have an older vehicle.

Excellent service. I have been coming here for more than 8 years and wouldn't go anywhere else. His price is great and they have a clean, pleasant waiting area. read more

I took my car in for its smog test. The husband/wife team are very friendly and helpful and the waiting area atmosphere was great (Asian decoration mixed with Sinatra-type music). I'll return again! read more

Quick service. I was a walk-in and they were able to do my smog check in 20 minutes as promised. Staff was professional and friendly.

They are always very friendly and helpful. They quoted me $40 out the door... for a Test Center price that is cheap!!!! For other places that only do Smog, it's $60. Usually I make an appointment because they are usually pack but they try to squeeze in walk-in customers. read more

The front desk and mechanic were very friendly! Told them what I needed which was a smog. The service went by super quick and it's definitely worth my money. read more

We took our car in today for a smog check. No appointment, but we were still in and out in a half hour. The waiting room was pleasant and I liked the decorative Pugs. So glad we found this place online. It was a relief to have everything taken care of so quickly and professionally. read more

don't hesitate, please visit these kind people...I can't believe how helpful and kind everyone was...I came back on a Sunday, the first appointment, and was done in five minutes and got $5 off my smog check...they are just fabulous...quick, efficient, and friendly... read more

Been taking my vehicles here for several years now and each time the service was fast and friendly. I'll continue to use this smog shop.

Excellent service. The price was very reasonable and the staff were helpful and pleasant. I'll be back with my other cars.

My car needed a smog check last minute and I called McHenry Smog Center and they got me in right away!!! They were super fast, super friendly and super reasonable in price. I would recommend McHenry Smog to all!!! I am definitely going back! read more

Another great experience with them today. Had been issue and needed a copy if certificate and had it hand in 5 minutes. Thanks again! Always courteous and quick. read more

My husband and I went there to have our cars smogged this afternoon. Our appointments were quick and for 2 cars we were out within 40 minutes the prices were great and the service was even better. Very friendly family business, I highly recommend them to anyone. I am a happy customer:) read more

After having a not-so-good experience at McHenry Smog a few weeks ago (which was so out of character for this business), the owner and I spoke and we resolved the problem. Khan is a very nice man, and easy to work with. I appreciate his friendliness in resolving the issue. I WILL return for my next smog, and will refer him to others! Thanks, Khan! read more

Super fast service! Kind, Courteous, and Friendly too! I recommend making an appointment to avoid waiting. I would highly recommend them. I will ne back with my other vehicles! read more

I made a appointment and the service was prompt and only took 10 minutes. Sheena Turner who worked in the office had a great personality and acted in a professional manner. I had a very good experience and will return in the future. read more