Top Rated Smog Test Shops Serving Byron, CA

If you really care about choosing a quality smog test shop, we’re here for you. Here’s your access to the best smog test shops serving Byron including 94514. These smog test experts provide tailpipe emissions and vehicle inspection program, and they also work on smog tests, emission testing equipment and emissions testing. For 22 years we’ve conducted the most accurate ratings and deepest research of local shops, so you’ll be confident in choosing.

  • Last Updated Mar 04, 2026
  • 8,530 people sourced companies in Auto Smog
    1,449 Verified Auto Smog Customers Surveyed
1,449
8,530
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Dublin Car Tek

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Dublin Car Tek is a Dublin-based general repair shop that works on foreign and domestic vehicles for Alameda and Contra Costa County motorists. The co...
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Main Services

Auto Repair
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Additional Services

Air Conditioning, Brakes, STAR Smog Checks & Repairs, Transmissions, Tune-ups, Heavy-Duty Fleet Services, Tires, Batteries, Radiators, Factory-Recommended Service, Suspension Work, “Check Engine” Light Diagnosis

Brands

ACDelco, BMW, Chevron, Mercedes-Benz, Mobil 1, Motorcraft, Valvoline

Coverage Areas

Contra Costa County, Alameda County

Family Owned
Family Owned
Established in 1991
Established in 1991
Special Discount
Special Discount
Residential & Commercial
Residential & Commercial
Diamond Certified Video Profile
Auto Repair - Dublin Car Tek - Contra Costa County
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Tim Johnson, Owner-Dublin Car Tek
Tim Johnson, Owner
Expert Contributions
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  • 611
  • Rating Surveys
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  • 12
  • Photos
    & Videos
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  • 5
  • Researched Articles
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    6008 Dougherty Road, Dublin, CA 94568
    Hours CLOSED NOW
    License:
    177039
    2 of 3

    Letcher Brothers Auto Repair

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    Letcher Brothers Auto Repair services most types of European, Japanese, American and fleet vehicles at its Pinole facility, handling everything from g...
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    Main Services

    Auto Repair
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    Auto Tires, Wheels & Alignment
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    Auto Transmissions
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    Auto Muffler & Brakes
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    Auto Diagnostics
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    Auto Repair - Electrical
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    Additional Services

    Automotive Repair & Maintenance, “Check Engine” Lights, Electrical Work, Air Bags, Transmissions, Suspensions, Anti-Lock Braking Systems (ABS), Alignments, Computer Diagnostics, Tires

    Coverage Areas

    Contra Costa County

    Family Owned
    Family Owned
    Established in 1991
    Established in 1991
    Free Estimates
    Free Estimates
    Appointments Available
    Appointments Available
    Diamond Certified Video Profile
    Auto Repair - Letcher Brothers Auto Repair - Contra Costa County
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    Mike Letcher, Owner-Letcher Brothers Auto Repair
    Mike Letcher, Owner
    Expert Contributions
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    • 302
    • Rating Surveys
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    • 15
    • Photos
      & Videos
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    • 5
    • Researched Articles
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      636 San Pablo Avenue, Pinole, CA 94564
      Hours CLOSED NOW
      License:
      179974
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      Delta Transmission

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      Delta Transmission has been servicing, repairing, replacing and rebuilding transmissions at its Antioch facility since 1958. In addition to general tr...
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      Main Services

      Auto Repair
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      Auto Transmissions
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      Additional Services

      Transmission Rebuilds, Differentials & Transfer Cases, Brake Pads & Rotors, Free Diagnoses on Transmissions & Differentials, No Engine Repairs, Drive Shaft Balancing, Shortening & Lengthening, U-Joint Replacement

      Coverage Areas

      Contra Costa County

      Family Owned
      Family Owned
      Established in 1958
      Established in 1958
      Free Quotes & Consultations
      Free Quotes & Consultations
      Free Estimates
      Free Estimates
      Diamond Certified Video Profile
      Auto Repair - Delta Transmission - Contra Costa County
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      Chester Kniss, Owner-Delta Transmission
      Chester Kniss, Owner
      Expert Contributions
      ratings icon
      • 465
      • Rating Surveys
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      • 13
      • Photos
        & Videos
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      • 5
      • Researched Articles
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        1105 Sunset Drive, Antioch, CA 94509
        Hours CLOSED NOW
        License:
        247427
        Learn how to choose a Auto Smog and more…

        Diamond Certified Smog Test Shops Serve These Byron ZIP Codes

        94514

        Diamond Certified Smog Test Shops In Byron

        Diamond Certified smog test shops serving Byron are rated an average of 4.6 out of 5 stars based on 1646 reviews of 17 rated smog test shops.
        Diamond Certified smog test shops in Byron Avg. Star Rating.

          Map of Byron, CA

          Byron was founded in 1880, and today, your 3,682 neighbors enjoy parades, barbecuing, reading, gaming and motorcycling. Byroners use Diamond Certified smog test shops for air pollution control, emission limits, smog checks, pollution control measures, emissions testing, and more.

          Frequently Asked Questions for Auto Smog in Byron, CA
          Q: What are customers of Diamond Certified smog test shops saying about shops in Byron, CA?
          A: Verified Dublin Car Tek Customer, 1 of 611
          "I liked that their mechanics are honest, they don't ever do work that isn't necessary, and they're really good about giving me information when I go in and have my car serviced. Their customer service, especially as a woman going in, because women are taken advantage of a lot and I don't feel that that occurs when I'm there. They're very conscientious. " - Cheryl J.
          All Survey Responses for Dublin Car Tek
          Verified Letcher Brothers Auto Repair Customer, 1 of 302
          "They are pretty straightforward, the prices are reasonable, and they do excellent work. The confidence I have in Letcher Brothers Auto Repair, I love the work that they do and the price. Mike knows both European and American cars." - Brendon D.
          All Survey Responses for Letcher Brothers Auto Repair
          Verified Delta Transmission Customer, 1 of 465
          "I would most definitely recommend them. They did a great job with me and it was affordable compared with other people. I was very happy with the service. Basically, they got it done." - Conrad P.
          All Survey Responses for Delta Transmission
          Q: What are some of the most popular brands that Diamond Certified smog test shops use when working with Byron residents?
          A: Diamond Certified smog test shops use top-quality brands like DC Sports, MBRP, Injen, Flowmaster and Hooker Headers.
          Q: What types of emission limits do smog test shops offer?
          A: Smog test shops offer a variety of vehicle emissions standards. These include emissions tests that are used to measure the amount of hydrocarbons, carbon monoxide, and other pollutants that are released by a vehicle's exhaust system. The tests are usually performed using an on-board diagnostics (OBD) system connected to the vehicle’s computer. The results of the test are then compared to the standards set by the local Environmental Protection Agency (EPA) to determine the vehicle's emissions level. If the vehicle fails the test, the owner must make the necessary repairs in order to pass the next emissions test.
          Q: Can Diamond Certified smog test shops work with MagnaFlow products and similar items so I can get tailpipe emissions in Byron?
          A: Yes, Diamond Certified smog test shops in Byron can work with MagnaFlow products and similar items to get tailpipe emissions.
          Q: What did people search for when they wanted to find the best quality smog test shops in Byron?
          A: Clean Air Regulations
          Tailpipe Emissions
          Emissions Testing
          Diesel Smog
          Tailpipe Emissions

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