--- title: "Clean Truck Check Testers in Santa Maria, CA (21 listed)" description: "Find 21 CARB-credentialed Clean Truck Check testers in Santa Maria, Santa Barbara County: 20 offer mobile testing, 10 do smoke opacity tests. Phone numbers…" url: "https://ctcfinder.com/testers/santa-barbara-county/santa-maria/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Santa Maria, CA 21 testing businesses in Santa Maria (Santa Barbara County) are on CARB's public Clean Truck Check tester list (25 credentialed testers). 20 offer mobile testing, 10 do smoke opacity tests, 16 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. ## Testers in Santa Maria - **[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. - **[Auto-IQ](https://ctcfinder.com/tester/auto-iq-santa-maria/)** — 504 S Western Ave Suite A, Santa Maria, CA 93458 — (805) 878-8056. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing. - **[Central City Truck and Trailer Parts](https://ctcfinder.com/tester/central-city-truck-and-trailer-parts-santa-maria/)** — 1912 S Olympia Dr, Santa Maria, CA 93458 — (805) 266-8050. Services: mobile testing, OBD testing, motorhome testing. - **[Cesar Ponce](https://ctcfinder.com/tester/cesar-ponce-santa-maria/)** — Santa Maria, CA 93458 — (805) 290-3907. Services: mobile testing, OBD testing, motorhome testing. - **[Cetti_Services Unlimited, Inc](https://ctcfinder.com/tester/cetti-services-unlimited-inc-santa-maria/)** — 1341 W McCoy Ln, Santa Maria, CA 93455 — (805) 207-8602. Services: mobile testing, OBD testing, motorhome testing. - **[Coast Diesel Service](https://ctcfinder.com/tester/coast-diesel-service-santa-maria/)** — 1104 Via Pavion, Santa Maria, CA 93455 — (805) 310-1182. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Deadline transit inspection](https://ctcfinder.com/tester/deadline-transit-inspection-santa-maria/)** — 522 Drake Dr, Santa Maria, CA 93455 — (805) 598-8228. Services: mobile testing, OBD testing, motorhome testing. - **[Diesel Injection Systems](https://ctcfinder.com/tester/diesel-injection-systems-santa-maria/)** — 1021 Tama Ln, Santa Maria, CA 93455 — (805) 680-5901. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Esteban Luna Solis](https://ctcfinder.com/tester/esteban-luna-solis-santa-maria/)** — Santa Maria, CA 93455 — (805) 868-9219. Services: mobile testing, OBD testing. - **[GDM Services](https://ctcfinder.com/tester/gdm-services-santa-maria/)** — 1322 Arabian Trl, Santa Maria, CA 93455 — (805) 699-8232. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Glenn Fujioka](https://ctcfinder.com/tester/glenn-fujioka-santa-maria/)** — Santa Maria, CA 93455 — (805) 431-0100. Services: OBD testing, smoke opacity (non-OBD) testing. - **[Jim Weston](https://ctcfinder.com/tester/jim-weston-santa-maria/)** — Santa Maria, CA 93455 — (805) 705-6372. Services: mobile testing, OBD testing, motorhome testing. - **[Jose Deloera](https://ctcfinder.com/tester/jose-deloera-santa-maria/)** — Santa Maria, CA 93455 — (805) 440-0819. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Joseph Diaz](https://ctcfinder.com/tester/joseph-diaz-santa-maria/)** — Santa Maria, CA 93455 — (805) 264-3828. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Mobile Diesel Emissions](https://ctcfinder.com/tester/mobile-diesel-emissions-santa-maria/)** — 125 Shirley Ln, Santa Maria, CA 93455 — (805) 478-0979. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[PC Mechanical Inc](https://ctcfinder.com/tester/pc-mechanical-inc-santa-maria/)** — 2803 Industrial Pkwy, Santa Maria, CA 93455 — (805) 896-3799. Services: mobile testing, OBD testing, motorhome testing. - **[PG CTC Testing](https://ctcfinder.com/tester/pg-ctc-testing-santa-maria/)** — 232 W Taft St, Santa Maria, CA 93458 — (805) 324-0829. Services: mobile testing, OBD testing, motorhome testing. - **[RnR clean truck check](https://ctcfinder.com/tester/rnr-clean-truck-check-santa-maria/)** — 1026 W Main St Suite B, Santa Maria, CA 93458 — (805) 865-3859. Services: mobile testing, OBD testing. - **[Rodriguez Truck Repair](https://ctcfinder.com/tester/rodriguez-truck-repair-santa-maria/)** — 1912 Prell Rd, Santa Maria, CA 93454 — (805) 863-7648. Services: mobile testing, OBD testing, motorhome testing. - **[Salvador Valencia](https://ctcfinder.com/tester/salvador-valencia-santa-maria/)** — Santa Maria, CA 93458 — (805) 310-3695. Services: mobile testing, OBD testing. - **[Samuel Avila](https://ctcfinder.com/tester/samuel-avila-santa-maria/)** — Santa Maria, CA 93455 — (805) 275-3880. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## More testers within 20 miles - **[Travis Gomez](https://ctcfinder.com/tester/travis-gomez-orcutt/)** — Orcutt, CA 93455 — (831) 206-1643 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Andrew Austin](https://ctcfinder.com/tester/andrew-austin-guadalupe/)** — Guadalupe, CA 93434 — (805) 598-2865 — 9 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Christian Garcia Mendoza](https://ctcfinder.com/tester/christian-garcia-mendoza-nipomo/)** — Nipomo, CA 93444 — (805) 631-6334 — 11 mi. Services: mobile testing, OBD testing. - **[Pacific Coast Diesel](https://ctcfinder.com/tester/pacific-coast-diesel-nipomo/)** — 225 N Oak Glen Ave, Nipomo, CA 93444 — (805) 266-0253 — 11 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Troesh Recycling (Tester)](https://ctcfinder.com/tester/troesh-recycling-tester-nipomo/)** — 2280 Hutton Rd, Nipomo, CA 93444 — (805) 357-2288 — 11 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Beach Front Auto & Smog](https://ctcfinder.com/tester/beach-front-auto-and-smog-oceano/)** — 1210 Pike Ln, Oceano, CA 93445 — (805) 878-2620 — 14 mi. Services: OBD testing, motorhome testing. ## Trucking in Santa Maria Santa Maria's produce and agricultural trucking along US-101 drives local demand for testing. ## Cost Typical published prices in California: OBD test $50–$135 per vehicle; smoke opacity test $190–$200. Prices are set by each tester. ## Frequently asked questions ### How many Clean Truck Check testers are in Santa Maria? CTC Finder lists 21 testing businesses in Santa Maria from CARB's public tester list (25 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 Santa Maria? Yes. 20 listed businesses in Santa Maria offer mobile testing, which means the tester comes to your yard. Use the Mobile filter above to see them. ### How much does a Clean Truck Check test cost in Santa Maria? 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/). ### How often does my truck need a Clean Truck Check test? Most trucks test twice a year, on a schedule tied to the DMV registration expiration date. CARB says OBD trucks move to four tests a year beginning October 2027. California-registered (non-commercial) motorhomes and agricultural vehicles test once a year. See the [deadline guide](https://ctcfinder.com/guide/deadlines-2026-2027/). ## Nearby cities - [Nipomo](https://ctcfinder.com/testers/san-luis-obispo-county/nipomo/) — 3 listings, 11 mi - [San Luis Obispo](https://ctcfinder.com/testers/san-luis-obispo-county/san-luis-obispo/) — 4 listings, 26 mi