--- title: "Clean Truck Check Testers in the Central Coast (186)" description: "186 CARB-credentialed Clean Truck Check testers in the Central Coast (Ventura to Santa Cruz, including Salinas, Santa Maria and Oxnard): 167 offer mobile…" url: "https://ctcfinder.com/testers/central-coast/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # 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 (191 credentialed testers). 167 offer mobile testing, 62 do smoke opacity tests, 135 test motorhomes. > CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester. ## Counties - [Ventura County](https://ctcfinder.com/testers/ventura-county/) — 68 testers - [Monterey County](https://ctcfinder.com/testers/monterey-county/) — 37 testers - [Santa Barbara County](https://ctcfinder.com/testers/santa-barbara-county/) — 31 testers - [San Luis Obispo County](https://ctcfinder.com/testers/san-luis-obispo-county/) — 25 testers - [Santa Cruz County](https://ctcfinder.com/testers/santa-cruz-county/) — 18 testers - [San Benito County](https://ctcfinder.com/testers/san-benito-county/) — 7 testers ## City pages - [Oxnard](https://ctcfinder.com/testers/ventura-county/oxnard/) (Ventura County) — 22 testers - [Santa Maria](https://ctcfinder.com/testers/santa-barbara-county/santa-maria/) (Santa Barbara County) — 21 testers - [Salinas](https://ctcfinder.com/testers/monterey-county/salinas/) (Monterey County) — 21 testers - [Ventura](https://ctcfinder.com/testers/ventura-county/ventura/) (Ventura County) — 14 testers - [Watsonville](https://ctcfinder.com/testers/santa-cruz-county/watsonville/) (Santa Cruz County) — 10 testers - [Simi Valley](https://ctcfinder.com/testers/ventura-county/simi-valley/) (Ventura County) — 8 testers - [Hollister](https://ctcfinder.com/testers/san-benito-county/hollister/) (San Benito County) — 7 testers - [Atascadero](https://ctcfinder.com/testers/san-luis-obispo-county/atascadero/) (San Luis Obispo County) — 6 testers - [Camarillo](https://ctcfinder.com/testers/ventura-county/camarillo/) (Ventura County) — 5 testers - [Santa Paula](https://ctcfinder.com/testers/ventura-county/santa-paula/) (Ventura County) — 5 testers - [Santa Barbara](https://ctcfinder.com/testers/santa-barbara-county/santa-barbara/) (Santa Barbara County) — 5 testers - [Paso Robles](https://ctcfinder.com/testers/san-luis-obispo-county/paso-robles/) (San Luis Obispo County) — 5 testers - [Moorpark](https://ctcfinder.com/testers/ventura-county/moorpark/) (Ventura County) — 4 testers - [San Luis Obispo](https://ctcfinder.com/testers/san-luis-obispo-county/san-luis-obispo/) (San Luis Obispo County) — 4 testers - [Newbury Park](https://ctcfinder.com/testers/ventura-county/newbury-park/) (Ventura County) — 3 testers - [Thousand Oaks](https://ctcfinder.com/testers/ventura-county/thousand-oaks/) (Ventura County) — 3 testers - [Nipomo](https://ctcfinder.com/testers/san-luis-obispo-county/nipomo/) (San Luis Obispo County) — 3 testers - [Gonzales](https://ctcfinder.com/testers/monterey-county/gonzales/) (Monterey County) — 3 testers - [King City](https://ctcfinder.com/testers/monterey-county/king-city/) (Monterey County) — 3 testers - [Monterey](https://ctcfinder.com/testers/monterey-county/monterey/) (Monterey County) — 3 testers - [Soledad](https://ctcfinder.com/testers/monterey-county/soledad/) (Monterey County) — 3 testers - [Santa Cruz](https://ctcfinder.com/testers/santa-cruz-county/santa-cruz/) (Santa Cruz County) — 3 testers ## Testing businesses with several credentialed testers - **[Rancho Suey Mechanical Services INC](https://ctcfinder.com/tester/rancho-suey-mechanical-services-inc-santa-maria/)** — 310 W. BETTERAVIA RD, Santa Maria, CA 93455 — (805) 680-8893. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[J.J.'s Smog](https://ctcfinder.com/tester/j-j-s-smog-oxnard/)** — 1281 S Oxnard Blvd, Oxnard, CA 93030 — (805) 216-5284. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Trucking in the Central Coast 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. ## Cost Typical published prices in California: OBD test $50–$135 per vehicle; smoke opacity test $190–$200; CARB annual fee $32.13 (2026), $33.12 (2027). ## 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](https://ctcfinder.com/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](https://ctcfinder.com/guide/cost/). ### 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.