Best Car Inspection & Emissions Testing in Thousand Oaks, CA
15 stations listed · 7 in Thousand Oaks · 5 open weekends · 14 rated 4.5+ · 2 show a license
Data verified October 16, 2026
American Muffler
Discount Smog Star Center
Skyline Auto Repair LLC
Ace Diagnostics
Westlake Smog Center
Listed for drivers in and around Thousand Oaks, CA, these 15 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.

Area overview: Thousand Oaks, CA
Of the 15 stations we list here, 7 are in Thousand Oaks itself and 8 come from Simi Valley (4, 9 mi), Camarillo (3, 9 mi) and Westlake Village (1, 5 mi). The stations on this page are rated from 4.4 to 5.0 across 3,442 reviews; 11 have 50 or more reviews and 14 are rated 4.5 or higher. The topics that come up most in reviews of the stations on this page are "price", "fair" and "honest". 5 are open on Saturdays and 2 on Sundays. 2 show a license on their websites; 1 lists staff certifications (ASE) and 4 have a BBB rating of A or A+. Domain records put 8 websites of the stations on this page at ten or more years old; the oldest dates from 2000. 1 offers financing; 1 is family- or locally-owned and 5 list coupons or special offers. We have a website on file for 13 of the stations on this page; 9 publish a contact page; 3 list a public email and 2 take bookings online. 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.
Can I use a station outside Thousand Oaks?
Inside your own state, yes. 7 of the 15 shops here are in Thousand Oaks and the rest come from other towns. Crossing a state line does not work, because the test has to be accepted by the state that registers the car.
Perry's Auto Repair
Foreign Carriage Service
Bj's Automotive
Bill's Quality Auto Care
Camarillo Independent Automotive Repair
Oil Changers
Asian Autoworks
R K Smog Services
Camarillo Car Care Center
Why these companies made our list
What customers say about stations in Thousand Oaks
- “Very friendly service and fair prices. I will be back every other year for my smog checks.” — customer of Discount Smog Star Center
- “Ken & Miguel are great people. I’ve taken 2 of my vehicles here and both of them passed smog with no issues.” — customer of Ace Diagnostics
- “The service is speedy also! In and out in less than 30 mins for a smog!” — customer of Shelley's Precision Auto Center
- “From the moment I pulled in, he was welcoming, kind, and had a great sense of humor — which made the whole process surprisingly fun (never thought I’d say that about a smog check!).” — customer of Discount Smog Star Center
- “Best smog experience I’ve ever had! Ken is the example of 10/10 best customer service.” — customer of Ace Diagnostics
Excerpts from public reviews of the stations listed on this page.




