--- title: "Clean Truck Check Testers in Santa Clara, CA (3 listed)" description: "Find 3 CARB-credentialed Clean Truck Check testers in Santa Clara, Santa Clara County: 2 offer mobile testing, 1 do smoke opacity tests. Phone numbers…" url: "https://ctcfinder.com/testers/santa-clara-county/santa-clara/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Santa Clara, CA 3 testing businesses in Santa Clara (Santa Clara County) are on CARB's public Clean Truck Check tester list (3 credentialed testers). 2 offer mobile testing, 1 do smoke opacity tests, 2 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 Clara - **[IH](https://ctcfinder.com/tester/ih-santa-clara/)** — 2287 Lenox Pl, Santa Clara, CA 95054 — (408) 593-3050. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Jspeed](https://ctcfinder.com/tester/jspeed-santa-clara/)** — 3610 Bassett St Suite 7, Santa Clara, CA 95054 — (408) 988-0076. Services: OBD testing, motorhome testing. - **[RJ Express Services LLC](https://ctcfinder.com/tester/rj-express-services-llc-santa-clara/)** — 1555 Laurelwood Rd Suite 6, Santa Clara, CA 95054 — (415) 871-1361. Services: mobile testing, OBD testing. ## More testers within 20 miles - **[Smog Check Car](https://ctcfinder.com/tester/smog-check-car-sunnyvale/)** — 698 N Fair Oaks Ave, Sunnyvale, CA 94085 — (408) 966-8200 — 3 mi. Services: OBD testing, motorhome testing. - **[Benjamin Nguyen](https://ctcfinder.com/tester/benjamin-nguyen-san-jose/)** — San Jose, CA 95131 — (408) 964-8829 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Ed Boland](https://ctcfinder.com/tester/ed-boland-san-jose/)** — San Jose, CA 95131 — (408) 997-9229 — 4 mi. Services: mobile testing, OBD testing. - **[Jose Medina](https://ctcfinder.com/tester/jose-medina-san-jose/)** — San Jose, CA 95131 — (408) 838-1146 — 4 mi. Services: OBD testing, smoke opacity (non-OBD) testing. - **[CS Autoworks](https://ctcfinder.com/tester/cs-autoworks-san-jose/)** — San Jose, CA 95110 — (408) 636-6210 — 4 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Eco Box Recycling Inc](https://ctcfinder.com/tester/eco-box-recycling-inc-san-jose/)** — 385 Willow St, San Jose, CA 95110 — (408) 639-1373 — 4 mi. Services: OBD testing. - **[California Clean Air Testing](https://ctcfinder.com/tester/california-clean-air-testing-san-jose/)** — 1346 The Alameda Suite 7, San Jose, CA 95126 — (707) 819-7469 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Reed & Graham Inc.](https://ctcfinder.com/tester/reed-and-graham-inc-san-jose/)** — 690 Sunol St, San Jose, CA 95126 — (408) 640-7203 — 5 mi. Services: OBD testing, smoke opacity (non-OBD) testing. - **[Samuel Noriega](https://ctcfinder.com/tester/samuel-noriega-san-jose/)** — San Jose, CA 95126 — (669) 444-4479 — 5 mi. Services: mobile testing, OBD testing, motorhome testing. - **[FJM Truck and Trailer Center](https://ctcfinder.com/tester/fjm-truck-and-trailer-center-san-jose/)** — 1540 Industrial Ave, San Jose, CA 95112 — (408) 417-2520 — 6 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Keyes ST Smog Check](https://ctcfinder.com/tester/keyes-st-smog-check-san-jose/)** — 331 Keyes St, San Jose, CA 95112 — (408) 831-8947 — 6 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Piston Dorado](https://ctcfinder.com/tester/piston-dorado-san-jose/)** — San Jose, CA 95112 — (650) 457-4699 — 6 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Trucking in Santa Clara Santa Clara County has the largest number of listed testers in the Bay Area. ## 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 Clara? CTC Finder lists 3 testing businesses in Santa Clara from CARB's public tester list (3 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 Clara? Yes. 2 listed businesses in Santa Clara 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 Clara? 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 - [Milpitas](https://ctcfinder.com/testers/santa-clara-county/milpitas/) — 3 listings, 6 mi - [Mountain View](https://ctcfinder.com/testers/santa-clara-county/mountain-view/) — 3 listings, 6 mi - [San Jose](https://ctcfinder.com/testers/santa-clara-county/san-jose/) — 41 listings, 8 mi - [Campbell](https://ctcfinder.com/testers/santa-clara-county/campbell/) — 3 listings, 8 mi - [Newark](https://ctcfinder.com/testers/alameda-county/newark/) — 4 listings, 9 mi - [Fremont](https://ctcfinder.com/testers/alameda-county/fremont/) — 12 listings, 10 mi - [Union City](https://ctcfinder.com/testers/alameda-county/union-city/) — 6 listings, 15 mi - [Redwood City](https://ctcfinder.com/testers/san-mateo-county/redwood-city/) — 3 listings, 15 mi - [Hayward](https://ctcfinder.com/testers/alameda-county/hayward/) — 18 listings, 18 mi - [San Lorenzo](https://ctcfinder.com/testers/alameda-county/san-lorenzo/) — 3 listings, 22 mi