This place might be closed. I went by on a Saturday during the hours published on Yelp and saw…read morehours posted looking through the window which matched the yelp hours but the lights were out & the door locked. The interior looked like either the biz owner is very clean or the business is closed and there's a few pieces of furniture leftover. So 2 stars. Call ahead to save yourself some time!!

If you're going to the DMV to deal with tag and title then you're doing it wrong! DJ is awesome and…read moreas long as you have any prerequisite documents you may need (i.e., smog, etc...) he'll get you in and out in less than ten minutes. Use the Google chat function to let him know what you need (he responds super quick), and he'll let you know if you need anything prior to coming in. I came here twice for both mine and my wife's out of state tags, and it was just too easy. This is a really good business and is worth a small fee as it and adds a wonderful convenience to what is usually a daunting experience.

Omg this was the best find ever! I had (what I thought) was a complicated situation and we were…read morestill in and out in about 20 minutes and I cannot say enough great things about the service Druscilla provides! I'm never going back to dmv again!!

She's a Miracle worker!! What probably would have taken weeks to have done at the DMV, she was able…read moreto get done in less than an hour. HIGHLY RECOMMEND coming here if you're not a fan of long lines and time being wasted!!

I have been coming here for a while now, and let me tell you when I mean I will never leave AAA…read more Their service and customer support is always on point. In terms of value, you get what you paid for and AAA always delivers. On that note, Aaliah is one of not the best employees I have had the pleasure of meeting and her attention to detail and service has been nothing short of exceptional. Aaliah is amazing and I can assure you'll have a pleasant experience if you need her assistance.

Jovani and Theresa are absolutely the best. On my most recent visit in early August 2026, Theresa…read morehandled my DMV renewal swiftly and efficiently, and Jovani's diligence saved me $500 on my insurance premium. They've assisted me many times over the years and have always treated me with genuine friendliness. Kudos to them for consistently delivering excellent customer service!

This place was awesome! Called and requested an appt. The guy over the phone was super nice. I came…read morein the same day. He gave me $10 off of my smog check. The man that did my smog was really friendly. It was quick and efficient! High recommend!!

A very low cost EXTREMELY efficient company.....Gonzalo Picos was excellent and website VERY easy…read moreto navigate for appointments. I had an OBDII monitor issue and had to come back 4 times until it set but they helped me get it done!

Thank you, Goodwin, for making time for me, during a busy Saturday, despite having less than 1-hour…read morebefore close. Goodwin is the pinnacle of what a great business owner should be - experienced, friendly, and customer oriented. I came in on a Saturday afternoon, with no appointment, and wanted to check to see if there was an off-chance he could help me. My car was in need of a STAR-certified smog check in order to get the 2023 registration sticker. I wanted to support a local business, in Lafayette, that was still opened, and noticed CarTech with the high reviews. I also noticed that Yelp check-in had a $45 offer (does not include the certification and only good for vehicles before a certain year). My vehicle was 2008, which was probably the oldest vehicle, out of the other 3 that were in his lot. Anyways, Goodwin honored the Yelp offer and gave me 40% off the listed rate. He told me that it would be 30-45 minutes (meaning 15-20 minutes after when the business closed) and recommended that I hang out at the Starbucks across the street. Once the vehicle was ready, and passed (YAY!) he gave me a call and said no need to rush as he moved my vehicle to top priority. He was going to then work on the other vehicles, as he promised the owner that it would be ready by this afternoon. A man of his word. Huge respect for CarTech and especially the business owner.

Worst ever. I scheduled online. Received an email saying I needed to be 10 minutes early. Got there…read moreand no one was there. Station attendant called said he would be there in a moment. Showed up after 30 minutes wait and was extremely rude. He said the $55 price was cash only. I said I would go get cash. He responded he didn't want my business and I should leave. CarTech is not worth the hassle.

Wonderful; I was in and out in less than a half hour for a Mercedes smog test . Maybe next time I…read morewill grab a pizza at Pinky's across the street on the way home or to eat there in the waiting area. My phone was left in the car cup holder and still there when I returned--thank you. Use the coupon that you can get online for a real deal.

Very nice. Quick service and very friendly. In and out in 10 minutes! Makes a must do task painless!read more

Fast and easy. Mrs B. Is the best friend and professional. I highly recommend. No waiting for…read morehours to get your business done .

I had the absolute pleasure of visiting Mrs. B's today to take care of a long-overdue vehicle…read moreregistration, and I can honestly say it was one of the smoothest and most pleasant customer service experiences I've had in a long time. Before heading in, I called to get some information and was lucky enough to speak with the owner, Felicia. Despite clearly being busy, she was incredibly kind, patient, and attentive. She didn't rush through the conversation at all--instead, she took the time to answer all of my questions thoroughly and with genuine care. From that initial phone call alone, I already had a good feeling about the place. When I arrived, Felicia greeted me warmly and immediately put me at ease. What I had expected to be a stressful ordeal was handled with such professionalism and efficiency that I left wondering why I hadn't come to Mrs. B's sooner. She took care of everything quickly, clearly explained what was being done, and never once made me feel like just another customer. Her attention to detail and personable nature made the entire process feel effortless. Felicia is truly a gem. It's rare these days to come across someone who not only understands what real customer service looks like but also lives and breathes it in how she runs her business. You can tell she genuinely cares about the people she helps and takes pride in making their experience a positive one. Businesses like Mrs. B's are what give a town character--they're the kind of places you want to support and tell others about. Livermore is lucky to have this kind of service available, and I'll be handling all of my vehicle registrations here moving forward. If you're reading this and considering where to go for DMV services--stop searching. Do yourself a favor and go visit Mrs. B's. You won't regret it. Thank you again, Felicia, for making a frustrating situation not only manageable but actually enjoyable. Keep doing what you're doing--you've absolutely earned a loyal customer.

Excellent, fast, and friendly service! Called on a Tuesday around 12:40pm to book a same day…read moreappointment for a Smog check and was able to get one. I needed to get a Smog certification to get my car registration renewed, and Walnut Creek Smog made the process easy! Check in was quick, and the Smog check was completed in 15 minutes as promised. I've been here twice now, and I'll definitely be back in the future!

This is a hidden gem! I tried to get a smog done at another local shop and when they couldn't take…read moremy car for the second time I jumped on Yelp to find someone who could get my car. My first call was to Walnut Creek Smog and they told me they needed to calibrate the machine and to come in an hour. I showed up and was greeted and they quickly got to work. They smogged my car quickly and were priced fairly. The employee who helped me was super friendly. They just won us over as new customers!