Top Rated Smog Test Shops Serving Sonoma County, 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 Sonoma County including 95403, 94928, 95407, 95404 and 95401. These smog test experts provide smog check requirements and emission testing equipment, and they also work on catalytic converters, smog checks and pollution control measures. For 22 years we’ve conducted the most accurate ratings and deepest research of local shops, so you’ll be confident in choosing.

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Empire Sports West

Empire Sports West provides a wide range of repair services for all types of cars at its Santa Rosa facility. In addition to working on regular vehicl...Read More

Main Services

Auto Repair
Auto Smog

Additional Services

Pre-Purchase Inspections, Brake Work, Smog Inspections & Repairs,


BMW , Mercedes-Benz

Coverage Areas

Sonoma County

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Walk-Ins Welcome
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Appointments Available
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Live Phone Call Answers
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Diamond Certified Expert Contributor
4325 Montgomery Drive, Santa Rosa, CA 95405
Learn how to choose a Auto Smog and more…
Diamond Certified Smog Test Shops In Sonoma County

Diamond Certified smog test shops serving Sonoma County are rated an average of 4.6 out of 5 stars based on 275 reviews of 14 rated smog test shops.
Diamond Certified smog test shops in Sonoma County Avg. Star Rating.

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Sonoma County was founded in 1835, and today, your 518,275 neighbors use smog test shops for pollution control measures, smog tests, emission control devices, catalytic converters, tailpipe emissions, and more.

Frequently Asked Questions for Auto Smog in Sonoma, CA
Q: What are customers of Diamond Certified smog test shops saying about shops in Sonoma County, CA?
A: Verified Empire Sports West Customer, one of 146
"They pay close attention to small details, they're consistent in having great performance, and they completely honor the work that they do. They've been around, so they're experienced, and they've most likely seen it all. I trust them." -Tessa R.
All Survey Responses for Empire Sports West
Q: What are some of the most popular brands that Diamond Certified smog test shops use when working with Sonoma County residents?
A: Diamond Certified smog test shops use top-quality brands like Banks Power, Bully Dog, Volant, Remus and Pypes Performance Exhaust.
Q: What types of emission control devices do smog test shops offer?
A: Smog test shops offer various emission control devices such as catalytic converters, exhaust gas recirculation (EGR) valves, and evaporative emission control (EVAP) systems. Catalytic converters help reduce harmful gases from the exhaust by converting them into less harmful substances. EGR valves lower the combustion temperature to reduce the amount of nitrogen oxide produced. EVAP systems prevent fuel vapors from escaping into the atmosphere. Additionally, they may also provide oxygen sensors and PCV (positive crankcase ventilation) valves, which control and monitor the fuel mixture and manage crankcase emissions, respectively.
Q: Can Diamond Certified smog test shops work with MagnaFlow products and similar items so I can get smog check requirements in Sonoma County?
A: Yes, Diamond Certified smog test shops can work with MagnaFlow products and similar items to meet smog check requirements in Sonoma County.
Q: What did people search for when they wanted to find the best quality smog test shops in Sonoma County?
A: Tailpipe Emissions
Emission Testing Equipment
Vehicle Inspection Programs
Catalytic Converters
Pollution Control Measures