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    Smog King

    4.6 (190 reviews)
    Open 9:00 am - 5:00 pm

    Services - Smog King

    Smog check

    Smog King Photos

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    Recommended Reviews - Smog King

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    Reviews With Photos

    Smog King for the win!
    Sam L.

    Fastest Smog check ever. Great price, friendly service. If you need a smog, this is your spot.

    At smog king !

    See all

    1 year ago

    Helpful 14
    Thanks 4
    Love this 13
    Oh no 0

    5 months ago

    Auto shops and smog shops usually make people nervous! Don't worry about that here! No BS just good fair work and prices.

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    8 months ago

    Helpful 0
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    4 months ago

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    1 year ago

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    8 months ago

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    4 months ago

    Super fast turnaround and easy to book an online appt. Support these hard working guys,

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    1 year ago

    The service here was fast and professional. I came for a smog check and was in/out in less than 15 minutes. Such a smooth process!

    Helpful 1
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    3 months ago

    Great customer service. Smooth transaction. Great energy. Everyone should go here, thank you Gael.

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    2 years ago

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    5 months ago

    Quick and as advertised. No upsetting and fast and efficient. Dont forget to use the coupon

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    10 months ago

    Speedy. Easy on line appointments. Always nice guys. Usually a coupon is available. Painless and efficient

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    4 months ago

    I got in as soon as I arrived. Everything was clearly explained to me. I was out in 20 min.

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    2 years ago

    Helpful 1
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    1 year ago

    Helpful 0
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    8 months ago

    Not bad, got me in and out quick, professional. Kinda weird to have a tip screen at a smog shop though

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    Photo of T T.
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    10 months ago

    Booking online was simple, and the smog check was done fast. The guy working there was really kind. Highly recommend.

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    11 months ago

    Helpful 0
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    3 years ago

    Helpful 0
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    2 years ago

    Helpful 0
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    2 years ago

    Clean,fast, professional. This is my go to place for smog check. I would encourage anyone go to this place.

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    1 year ago

    Helpful 0
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    4 years ago

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    2 years ago

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    4 years ago

    Business owner information

    Photo of Brian C.

    Brian C.

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    2 years ago

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    4 years ago

    Helpful 2
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    1 year ago

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    2 years ago

    Matches online offers with some quick service. Some issues with hours of operation so call first.

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    Photo of Dan O.
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    2 years ago

    Fast and friendly service, Gael was awesome, will definitely be back in 2 yrs for the next smog check.

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    Photo of Tom B.
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    2 years ago

    Chris was fantastic. I showed up and he had my car in and out in no time! Great experience

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    2 years ago

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    4 years ago

    Business owner information

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    Brian C.

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    3 years ago

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    3 years ago

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    5 years ago

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    2 years ago

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    2 years ago

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    4 years ago

    Business owner information

    Photo of Brian C.

    Brian C.

    Helpful 0
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    5 years ago

    Business owner information

    Photo of Brian C.

    Brian C.

    Helpful 1
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    Page 1 of 5

    Ask the Community - Smog King

    Review Highlights - Smog King

    Chris answered all of my questions, and was professional and personable every step of the way.

    Mentioned in 19 reviews

    Read more highlights

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    (343 reviews)

    Incredibly responsive, honest, transparent, and trustworthy people and service!…read more Whether it's for an oil change or a major service, the team here gets the job done with speed, efficiency, and high quality. They also call promptly to provide updates and are up front about their recommendations. I just had my 90k service completed and they provided a clear breakdown of what's highly recommended to fix and why vs. others that need monitoring. Love that they sent the report via text so I could take some time to review and discuss with my husband. I also think the price is fair (checked with AI and it always fits the range for the service). Special thanks to Scott for staying late so I could pick my car up before the weekend! Appreciate you!! Highly recommend. P.S. location is so convenient, too. Got a car wash right next door (excellent btw), a tire shop on the other side (for those darn nails), and Costco gas down the street!

    I highly recommend AutoTech in San Ramon for anyone looking for car repair. Lauren answered my call…read morewhen I reached out and kindly offered to take a look at my car first to estimate the diagnostic cost. They scanned my 2010 Prius car at no charge and identified the issues. There would only be a fee if further diagnosis or repairs were needed. The initial scan was very helpful and allowed me to contact the battery company for my Prius battery pack, which is still under warranty. AutoTech is a great place to get an estimate, and Lauren is very responsive. I had a very positive experience and would definitely recommend this shop as an alternative to dealership service.

    Ace Auto Repair & Tire

    Ace Auto Repair & Tire

    (185 reviews)

    Honest, hardworking and efficient service, had a tire puncture patched, can't recommend them…read moreenough! On the night before a road trip, I discovered a tire in my car losing air, the culprit being a nail lodged in. Ace auto repair and tire was the only shop open at 7 in the morning, I walked in without an appointment at 7:30. They removed the nail, patched up the tire and completed the work in an hours time! When I asked them about payment for the service, they refused to charge me for the repair. While waiting in the shop for the repair, I witnessed a bunch of regulars bringing in their vehicles for different kinds of issues. The trust and comfort they had with this shop was something that has been built on with years of excellent service. I've been to other tire shops where I've been overcharged for similar situations because I needed help quickly. Ace auto repair and tire is a refreshing change from those experiences and definitely have me as a long term customer for the future!

    I, unfortunately, got a punctured tire from a nail driving through traffic in the bay area. My…read moremechanic put a temporary fix & advised me to seek a tire repair shop for a formal repair. I checked another business nearby who declined to assist due to the temporary patch. I called Ace Auto Repair & Tire and spoke to Danny who advised to visit right when the business opened as they do get busy. I also asked if there was a charge for a flat tire repair & he said no charge if it was fixable. I have a Subaru WRX with an AWD system which can get complicated if one tire is compromised. I visited on a Saturday morning & advised the front staff of my dilemma. I was so anxious thinking that I'd be potentially turned away, but they were courteous to take a look at the patch & I'm forever grateful to Armando for making the determination that my tire was still repairable, then completing the job in less than an hour! And true to word, I wasn't charged for the tire repair. My greatest appreciation to the staff at Ace! I was chilling on the couches nearby the front door - it's bright, spacious & clean inside. Two other customers followed after me - also overhearing their issues & constraints - I could tell from those interactions with the front staff & the communication with the technicians in the back that this repair business works hard to help & take care of their customers. Thank you, Ace Auto Repair & Tire!

    Diablo Auto Care

    Diablo Auto Care

    (97 reviews)

    I've been going to Diablo Auto Care for about a year now, and they've earned a level of trust…read morethat's honestly rare in auto repair. At one point my Acura MDX was at the dealer, and I was told I needed a gasket repair that would have cost well over a thousand dollars. I brought the car to Diablo for a second opinion, and they determined that the repair wasn't actually needed -- and they didn't charge me anything. They could have easily sold me expensive work I didn't need. They didn't. On another visit, the scheduled maintenance called for a valve adjustment -- something that normally involves a costly and invasive procedure. Diablo had the proper diagnostic tools to evaluate whether it was actually necessary, determined it wasn't, and saved me a significant amount of money. I also once brought my car in because I was concerned there might be exhaust fumes getting into the cabin. They took the time to evaluate it, drove the car, and checked everything -- and again, since there wasn't actually a problem to fix, they didn't charge me a dime for their time. They consistently under-promise and over-deliver. Repairs are done faster than expected, communication is clear, and more than once the "surprise" has been that my final cost was lower than what I was originally told. On top of all that, when my MDX needed to stay in the shop, they even drove me over to Enterprise so I could get a rental -- completely voluntarily. They didn't have to do that, but they did. That kind of consideration is rare and very appreciated. If you're looking for a shop that actually looks out for your interests -- not just their invoice -- Diablo Auto Care is it.

    My husband always handled maintenance on my cars until I purchased a hybrid. Wanting to find a…read morereputable and honest local business, I came across Diablo Auto Care -- and I'm so glad I did. Their prices are reasonable, but what really impressed me was the customer service. A few weeks after my service, I had an issue and they literally dropped everything to assess and remedy it so I could get to work the next day. They charged me nothing for the assessment and quick repair, though we absolutely tipped the employee who helped me because his kindness and professionalism deserved recognition. You just don't find this kind of customer care very often anymore -- and certainly not from auto manufacturers charging thousands extra for service contracts. Thank you Chris, Ken, and especially the employee who helped me out in a pinch. Highly recommend!

    Smog King - smog_check_stations - Updated May 2026

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