--- title: "Clean Truck Check Testers in Hollister, CA (7 listed)" description: "Find 7 CARB-credentialed Clean Truck Check testers in Hollister, San Benito County: 6 offer mobile testing, 2 do smoke opacity tests. Phone numbers, services…" url: "https://ctcfinder.com/testers/san-benito-county/hollister/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Hollister, CA 7 testing businesses in Hollister (San Benito County) are on CARB's public Clean Truck Check tester list (7 credentialed testers). 6 offer mobile testing, 2 do smoke opacity tests, 5 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 Hollister - **[Abraham](https://ctcfinder.com/tester/abraham-hollister/)** — 956 East St, Hollister, CA 95023 — (831) 524-9632. Services: mobile testing, OBD testing. - **[Adrian Alcaraz](https://ctcfinder.com/tester/adrian-alcaraz-hollister/)** — Hollister, CA 95023 — (408) 550-4348. Services: mobile testing, OBD testing, motorhome testing. - **[Allen Equipment Service and Repair](https://ctcfinder.com/tester/allen-equipment-service-and-repair-hollister/)** — 301 Glen Falls Ct, Hollister, CA 95023 — (831) 320-5792. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Central California Diesel Parts and service](https://ctcfinder.com/tester/central-california-diesel-parts-and-service-hollister/)** — 2250 Pinnacle Ct, Hollister, CA 95023 — (831) 902-8701. Services: mobile testing, OBD testing. - **[Miguel Franco](https://ctcfinder.com/tester/miguel-franco-hollister/)** — Hollister, CA 95023 — (831) 537-6093. Services: mobile testing, OBD testing, motorhome testing. - **[San Benito Smog](https://ctcfinder.com/tester/san-benito-smog-hollister/)** — 731 San Felipe Rd B1, Hollister, CA 95023 — (831) 537-1349. Services: OBD testing, motorhome testing. - **[The carb inspector](https://ctcfinder.com/tester/the-carb-inspector-hollister/)** — 2618 Glenview Dr, Hollister, CA 95023 — (408) 658-7565. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## More testers within 20 miles - **[B&L Truck and Tractor Repair](https://ctcfinder.com/tester/b-and-l-truck-and-tractor-repair-gilroy/)** — 8594 Forest St, Gilroy, CA 95020 — (831) 889-8611 — 15 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Cruz Tire & Truck Repair](https://ctcfinder.com/tester/cruz-tire-and-truck-repair-gilroy/)** — 5870 Monterey Rd A, Gilroy, CA 95020 — (909) 533-0433 — 15 mi. Services: mobile testing, OBD testing. - **[Dhillon CARB Testing](https://ctcfinder.com/tester/dhillon-carb-testing-gilroy/)** — 1125 Violet Way, Gilroy, CA 95020 — (408) 775-9600 — 15 mi. Services: mobile testing, OBD testing. - **[Maggiora Bro Drilling](https://ctcfinder.com/tester/maggiora-bro-drilling-gilroy/)** — Gilroy, CA 95020 — (669) 469-9223 — 15 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Mateo Huerta](https://ctcfinder.com/tester/mateo-huerta-gilroy/)** — Gilroy, CA 95020 — (650) 290-0652 — 15 mi. Services: mobile testing, OBD testing. - **[Mosher Equipment Services LLC](https://ctcfinder.com/tester/mosher-equipment-services-llc-gilroy/)** — 1290 Masten Ave, Gilroy, CA 95020 — (408) 660-5693 — 15 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Premier Diesel LLC](https://ctcfinder.com/tester/premier-diesel-llc-gilroy/)** — 6484 Automall Pkwy, Gilroy, CA 95020 — (408) 842-2999 — 15 mi. Services: OBD testing. - **[Prime Smog Check & Repair LLC](https://ctcfinder.com/tester/prime-smog-check-and-repair-llc-gilroy/)** — 505 Mayock Rd Suite E-17, Gilroy, CA 95020 — (408) 337-1547 — 15 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Ramil Dangca](https://ctcfinder.com/tester/ramil-dangca-gilroy/)** — Gilroy, CA 95020 — (650) 380-6144 — 15 mi. Services: not listed. - **[Redmans Automotive](https://ctcfinder.com/tester/redmans-automotive-gilroy/)** — 20 E Luchessa Ave, Gilroy, CA 95020 — (408) 842-0663 — 15 mi. Services: OBD testing, motorhome testing. - **[Samuel Zepeda Gonzalez](https://ctcfinder.com/tester/samuel-zepeda-gonzalez-gilroy/)** — Gilroy, CA 95020 — (408) 612-2931 — 15 mi. Services: mobile testing, OBD testing. - **[Todd Simmons](https://ctcfinder.com/tester/todd-simmons-gilroy/)** — Gilroy, CA 95020 — (831) 756-8109 — 15 mi. Services: mobile testing, OBD testing, motorhome 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 Hollister? CTC Finder lists 7 testing businesses in Hollister from CARB's public tester list (7 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 Hollister? Yes. 6 listed businesses in Hollister 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 Hollister? 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 - [Gilroy](https://ctcfinder.com/testers/santa-clara-county/gilroy/) — 13 listings, 15 mi - [Salinas](https://ctcfinder.com/testers/monterey-county/salinas/) — 21 listings, 23 mi - [Watsonville](https://ctcfinder.com/testers/santa-cruz-county/watsonville/) — 10 listings, 24 mi - [Morgan Hill](https://ctcfinder.com/testers/santa-clara-county/morgan-hill/) — 6 listings, 25 mi - [Los Banos](https://ctcfinder.com/testers/merced-county/los-banos/) — 8 listings, 25 mi - [Gonzales](https://ctcfinder.com/testers/monterey-county/gonzales/) — 3 listings, 28 mi - [Soledad](https://ctcfinder.com/testers/monterey-county/soledad/) — 3 listings, 36 mi - [Monterey](https://ctcfinder.com/testers/monterey-county/monterey/) — 3 listings, 36 mi - [Santa Cruz](https://ctcfinder.com/testers/santa-cruz-county/santa-cruz/) — 3 listings, 39 mi - [Dos Palos](https://ctcfinder.com/testers/merced-county/dos-palos/) — 4 listings, 40 mi