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24 stations listed · 7 in Petaluma · 9 open weekends · 23 rated 4.5+ · 3 show a license
Data verified October 16, 2026
Listed for drivers in and around Petaluma, CA, these 24 shops carry out emissions and inspection work. What each one says about its station license, hours and retest policy comes from its own website; ratings and quotes come from public reviews.
Of the 24 stations we list here, 7 are in Petaluma itself and 17 come from towns including Santa Rosa (13, 15 mi), Rohnert Park (1, 9 mi) and Sonoma (1, 9 mi). The stations on this page are rated from 4.2 to 5.0 across 3,141 reviews; 18 have 50 or more reviews and 23 are rated 4.5 or higher. When customers rate these stations on specific qualities, they most often praise professionalism (91%), quality (83%) and value (83%). The topics that come up most in reviews of the stations on this page are "communication", "diagnosis" and "fair". 9 are open on Saturdays and 2 on Sundays. 3 show a license on their websites; 7 list staff certifications (ASE) and 5 have a BBB rating of A or A+. Domain records put 15 websites of the stations on this page at ten or more years old; the oldest dates from 1999. 3 offer financing; 3 give free estimates; 5 are family- or locally-owned and 7 list coupons or special offers. We count these figures across the stations on this page; distances are straight-line, and hours and prices change, so confirm the details with the station before you visit.
6 of the 24 shops here take bookings online. Some stations work on a queue instead, which is fine early in the month and painful at the end of it. If you can book, take the first slot of the day and you will be out before the line forms.
- “Our wonderful little ride is back to life in tiptop shape, quieter, smoother than in a long time; the pesky check engine light vanquished.” — customer of Bosch Automotive Motor Systems
- “I've been at 101 Express Smog 4-times within last 8-years for smog inspection and each time they are very prompt in keeping an appointment time and efficient, usually completes' in 20-minutes.” — customer of 101 Express Smog
- “Super nice tech, was in and out quickly even with a couple of people there before me.” — customer of East Washington Smog
- “My smog was $80 which included the certificate. I will recommend this business and return here in the future.” — customer of 101 Express Smog
Excerpts from public reviews of the stations listed on this page.
