Clean Truck Check testers in the Central Coast
186 testing businesses in the Central Coast (Ventura to Santa Cruz, including Salinas, Santa Maria and Oxnard) are on CARB's public Clean Truck Check tester list, with 191 credentialed testers. 167 (90%) offer mobile testing at your yard, 62 do smoke opacity tests for older trucks and 135 test motorhomes. The largest city pages are Oxnard (22), Santa Maria (21), Salinas (21).
Counties in the Central Coast
- Ventura County 68
- Monterey County 37
- Santa Barbara County 31
- San Luis Obispo County 25
- Santa Cruz County 18
- San Benito County 7
Cities with their own page
- Oxnard 22
- Santa Maria 21
- Salinas 21
- Ventura 14
- Watsonville 10
- Simi Valley 8
- Hollister 7
- Atascadero 6
- Camarillo 5
- Santa Paula 5
- Santa Barbara 5
- Paso Robles 5
- Moorpark 4
- San Luis Obispo 4
- Newbury Park 3
- Thousand Oaks 3
- Nipomo 3
- Gonzales 3
- King City 3
- Monterey 3
- Soledad 3
- Santa Cruz 3
Smaller cities are listed on their county page.
Testing businesses with several credentialed testers
More credentialed testers usually means more capacity for fleets and before deadlines.
-
Rancho Suey Mechanical Services INC
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
-
J.J.'s Smog
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
Trucking in the Central Coast: what to know
Central Coast demand comes from produce and agricultural trucking in the Salinas Valley, Santa Maria and the Oxnard Plain, and from the Port of Hueneme in Oxnard, where port facilities must verify Clean Truck Check compliance (CARB). Agricultural vehicles used only in farming test once a year.
What a Clean Truck Check costs here
Testers set their own prices. Across the California prices we found, an OBD test usually costs $50–$135 per vehicle and a smoke opacity test $190–$200, plus CARB's annual fee ($32.13 in 2026, $33.12 in 2027). Cost guide · Remote and telematics testing.
Frequently asked questions
How many Clean Truck Check testers are in the Central Coast?
CTC Finder lists 186 testing businesses in the Central Coast from CARB's public tester list (191 credentialed testers), last checked November 1, 2026. Listing on CARB's list is optional, so the real number can be higher.
Is there mobile Clean Truck Check testing in the Central Coast?
Yes. 167 listed businesses in the Central Coast offer mobile testing, which means the tester comes to your yard. Each city page has a Mobile filter; see also mobile testers.
How much does a Clean Truck Check test cost in the Central Coast?
Testers set their own prices. Published prices for an OBD test are usually $50–$135 per vehicle; smoke opacity tests for older trucks often cost more, and mobile testers may add a trip fee. See the cost guide.
Which Central Coast cities have the most Clean Truck Check testers?
Oxnard (22), Santa Maria (21), Salinas (21). Every city with 3 or more listings has its own page with phone numbers and a Mobile filter.
Source: CARB's public Clean Truck Check tester list, last checked . Listing on CARB's list is optional for testers, so some credentialed testers are not shown. Services, hours and prices change; please confirm with the tester before you go. Something wrong? Send a correction.