--- title: "Clean Truck Check Testers in Livermore, CA (8 listed)" description: "Find 8 CARB-credentialed Clean Truck Check testers in Livermore, Alameda County: 5 offer mobile testing, 3 do smoke opacity tests. Phone numbers, services and…" url: "https://ctcfinder.com/testers/alameda-county/livermore/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Livermore, CA 8 testing businesses in Livermore (Alameda County) are on CARB's public Clean Truck Check tester list (8 credentialed testers). 5 offer mobile testing, 3 do smoke opacity tests, 7 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 Livermore - **[A1 Smog Center](https://ctcfinder.com/tester/a1-smog-center-livermore/)** — 3573 First St Suite E, Livermore, CA 94551 — (510) 584-8200. Services: mobile testing, OBD testing, motorhome testing. - **[Aabco Automotive Repair](https://ctcfinder.com/tester/aabco-automotive-repair-livermore/)** — 1200 Portola Ave, Livermore, CA 94551 — (510) 421-8872. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Allen's Diesel OBD Carb testing](https://ctcfinder.com/tester/allens-diesel-obd-carb-testing-livermore/)** — 185 N K St, Livermore, CA 94550 — (925) 382-1900. Services: mobile testing, OBD testing, motorhome testing. - **[Eric Khlaut](https://ctcfinder.com/tester/eric-khlaut-livermore/)** — Livermore, CA 94551 — (925) 206-2004. Services: not listed. - **[Mobile Golden State Emissions Testing](https://ctcfinder.com/tester/mobile-golden-state-emissions-testing-livermore/)** — 796 Laurel Dr, Livermore, CA 94551 — (925) 354-4370. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Mobile Wrenching](https://ctcfinder.com/tester/mobile-wrenching-livermore/)** — 903 Ventura Ct, Livermore, CA 94551 — (925) 525-2673. Services: mobile testing, OBD testing, motorhome testing. - **[Mountain Cascade INC](https://ctcfinder.com/tester/mountain-cascade-inc-livermore/)** — 555 Exchange Ct, Livermore, CA 94550 — (209) 458-1113. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Vasco Quick Lube](https://ctcfinder.com/tester/vasco-quick-lube-livermore/)** — 1443 N Vasco Rd., Livermore, CA 94551 — (916) 417-7001. Services: OBD testing, motorhome testing. ## More testers within 20 miles - **[Matt's Mobile](https://ctcfinder.com/tester/matts-mobile-pleasanton/)** — Pleasanton, CA 94566 — (925) 895-2123 — 8 mi. Services: mobile testing, OBD testing. - **[Marcelo Mendoza](https://ctcfinder.com/tester/marcelo-mendoza-tracy/)** — Tracy, CA 95391 — (925) 352-0590 — 8 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[All star smog](https://ctcfinder.com/tester/all-star-smog-tracy/)** — 3402 Mars Ct Suite 106, Tracy, CA 95377 — (209) 640-1524 — 10 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Bihala Fleet Management Inc](https://ctcfinder.com/tester/bihala-fleet-management-inc-tracy/)** — 205 Gandy Dancer Dr, Tracy, CA 95377 — (209) 884-7258 — 10 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Bret Cryer](https://ctcfinder.com/tester/bret-cryer-tracy/)** — Tracy, CA 95377 — (925) 922-5346 — 10 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Carb Compliance Checkers](https://ctcfinder.com/tester/carb-compliance-checkers-tracy/)** — 2609 Cranston Ct, Tracy, CA 95377 — (510) 378-8058 — 10 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Kutch Mobile Service](https://ctcfinder.com/tester/kutch-mobile-service-tracy/)** — 16866 Midway Rd, Tracy, CA 95377 — (925) 922-2327 — 10 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Pavan Kataria](https://ctcfinder.com/tester/pavan-kataria-tracy/)** — Tracy, CA 95377 — (510) 456-8213 — 10 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Sarah Sahota-Dhillon](https://ctcfinder.com/tester/sarah-sahota-dhillon-tracy/)** — Tracy, CA 95377 — (925) 216-0137 — 10 mi. Services: mobile testing, OBD testing. - **[Shivali Sharma](https://ctcfinder.com/tester/shivali-sharma-tracy/)** — Tracy, CA 95377 — (209) 666-5889 — 10 mi. Services: mobile testing, OBD testing. - **[Christina Law](https://ctcfinder.com/tester/christina-law-dublin/)** — Dublin, CA 94568 — (415) 638-1873 — 11 mi. Services: mobile testing, OBD testing. - **[Eric Icay](https://ctcfinder.com/tester/eric-icay-dublin/)** — Dublin, CA 94568 — (925) 765-7327 — 11 mi. Services: mobile testing, OBD testing. ## Trucking in Livermore Alameda County includes the Port of Oakland and the I-880 industrial corridor (Hayward, San Leandro, Fremont). ## 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 Livermore? CTC Finder lists 8 testing businesses in Livermore from CARB's public tester list (8 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 Livermore? Yes. 5 listed businesses in Livermore 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 Livermore? 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 - [Dublin](https://ctcfinder.com/testers/alameda-county/dublin/) — 4 listings, 11 mi - [Tracy](https://ctcfinder.com/testers/san-joaquin-county/tracy/) — 21 listings, 13 mi - [Brentwood](https://ctcfinder.com/testers/contra-costa-county/brentwood/) — 3 listings, 16 mi - [Fremont](https://ctcfinder.com/testers/alameda-county/fremont/) — 12 listings, 18 mi - [Milpitas](https://ctcfinder.com/testers/santa-clara-county/milpitas/) — 3 listings, 20 mi - [Oakley](https://ctcfinder.com/testers/contra-costa-county/oakley/) — 9 listings, 21 mi - [Antioch](https://ctcfinder.com/testers/contra-costa-county/antioch/) — 11 listings, 21 mi - [Union City](https://ctcfinder.com/testers/alameda-county/union-city/) — 6 listings, 21 mi - [Hayward](https://ctcfinder.com/testers/alameda-county/hayward/) — 18 listings, 22 mi - [Newark](https://ctcfinder.com/testers/alameda-county/newark/) — 4 listings, 22 mi