Quick, easy, and reasonably priced…read more Joel helped me out at the front desk and quickly got me through the paperwork for my smog test. The results are sent over electronically so I don't have to do any additional work and the wait was about 15 minutes despite there being 3 people ahead of me, so they are efficient.

Thank you to Joel and Armando!! They are the best!! Fast, easy and a fair price. Decent waiting…read moreroom. I felt safe as a woman alone. :) I would get my smog test done here again.

Great service, fast friendly and affordable. Allowed me to come in early for my appt. Thanksread more

I needed my suv star smogged which is a specific smog place and I called around and got the best…read moredeal from this place. It's $53 dollars with a credit card and only $48 with exact cash required! So I figured I'm in for the $48 but there was a problem with my suv because it needed an O2 sensor so I then took it to my mechanic and his name is Tim Lynch with T&K Automotive Repairs he does it in half a day and I go back to RJ at 101 Expressway Smog and the thing is you have to drive a certain number of miles to get the whole thing reset. RJ tells me this so I went out and drove it around for a couple of days take it back to RJ and he charges me next to nothing to have it done the 3rd. Time!! How great at that!! Thank you RJ for being a good man! It's so appreciated!!

Super sonic smog is the best place to go .The men working there are amazing ,very polite and the…read moreprice was not bad.I would go again when needed.Good job for the men working there.

Well after letting one of my cars sit for a year with a dead battery, I finally put in a new…read morebattery and then needed to get the car smog (yup, the registration came up and it required a smog). I called my usual place which is opened on Saturdays (more convenient for me so I don't have to take time off from work) and spoke to the person who answered the phone and asked to make an appointment. Well I was surprised that it wasn't the place I called but another shop as my usual spot forward their phone to another business due to a fire they had. This person said I could take it to them or take it to Super Sonic Smog but neither took appointments and were only opened Monday through Friday. I thought about it and went to Super Sonic Smog the next morning shortly after they opened and there was a line of cars as well as the cars they were working on. I happened to see Joe who does some of the smogs and asked how long he thought it would be and he said at least an hour. Well I couldn't wait that long as I had to get back to work so he said to come by around 4:15pm that same day. So I went to work and asked my boss if I could leave at 4pm to get the car smogged and he was fine with it. I left and got there about 4:10pm, and then waited. Randy ended up working on my car and I ended up waiting longer than normal smog should take due to the fact that the vehicle before my car had some issues so it took longer. Pricing was very reasonable and they do charge a convenience fee for using a credit card, though I didn't know it until I saw my receipt as there was no signage in the business stating that they charged a fee. Services was great and I will definitely take my other car here when it's time for a smog.

Genuinely good people. I don't think I'm going anywhere else from now on. Advanced Smog is run by…read morehardworking, honest people who really care about their customers. Every time I bring my car in, they're always willing to help and take the time to actually listen to what's going on with my car. They never try to upsell me or take advantage, which is honestly rare these days and something I really appreciate. You can tell they take pride in their work and treat customers with respect. I highly, highly recommend them. I'll definitely be referring anybody and everybody I know here. I seriously can't say enough good things about this place. Five stars all the way

I had an excellent experience with getting my vehicle smog here today. It was quite easy to make an…read moreappointment with a time that worked with my schedule. I was greeted nicely when I arrived and honestly, I think I only sat down for 15 minutes before it was completed And have a nice little coupon one can use. $61 out the door- not so bad.

I live in Petaluma and after reading about smog shops here I decided on this one, a 15 minute…read moredrive. I was not disappointed. I made an appointment. Arrived on time and there was no waiting, it was done in 15 minutes for under $80. Why take a chance going somewhere else?

Been in the automotive trade for over 55 years. I've used numerous smog shops to get vehicles…read moresmogged and this place is honest, fast, affordable, and always a pleasure to deal with. Top on my list for smog shops. Some people say they dont even have to make an appointment to have it done. I don't know any place that does that but here. I will definitely be back

They were friendly and the check was very quickly done. The waiting area was clean and comfortable…read morefor the short wait. I definitely recommend them!

Very happy with the service. My smog test was complete start to finish in about 30 minutes…read more Friendly, efficient service.

This place is truly amazing! First off they were the lowest priced Smog check in Sonoma county…read more Second they dont need a reservation , though they do take them. I popped in later in the afternoon when it was convenient and they Gladly took me in all with a big smile. Only had to wait maybe :20 minutes to get a tech on my Volt and the actual test was only a few minutes-maybe :15. Third as many have already written they have a super nice waiting room complete with free coffee, chocolate, pop corn, cup O noodles, TV and big comfy chairs and a lovely tropical fish aquarium complete with hermit crabs. They sent all the required data directly to DMV. Easy convenient location. I am so happy with them! I highly recommend Hensley's and will continue to use them. A+

Friendly front desk people, very nice waiting room with Phone charging station. Payment link and…read moresmog cert was immediately sent to my phone, as soo. As the test was done, so writing this review took me longer than making payment and getting my smog cert. Good looking female smog technicians talks very good about gender equality. Overall, I recommend this place, price is competitive. Proffecional Service.

D1 was great. They were ready for me when I walked in at my appointment time, the work was…read morecompleted quickly, and my smog certificate was sent directly to the DMV. This is the service I came for and I was happy when I left. I received a discount based on status as a "senior", which I always like. A good value and experience.

I have nothing but praise for the gentleman at D1. Not only did he take good care of my daughters…read morecar, he told me that Iay want to have her tires checked. 2 of them were almost bald. Something I sadly wouldnt have noticed. She drives my two little grandsons all over the place. He didnt have to say a word. Such a personable guy.