--- title: "Clean Truck Check Testers in Azusa, CA (7 listed)" description: "Find 7 CARB-credentialed Clean Truck Check testers in Azusa, Los Angeles County: 6 offer mobile testing, 1 do smoke opacity tests. Phone numbers, services and…" url: "https://ctcfinder.com/testers/los-angeles-county/azusa/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Azusa, CA 7 testing businesses in Azusa (Los Angeles County) are on CARB's public Clean Truck Check tester list (7 credentialed testers). 6 offer mobile testing, 1 do smoke opacity tests, 6 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 Azusa - **[Bill's Truck Repair](https://ctcfinder.com/tester/bills-truck-repair-azusa/)** — 132 S Irwindale Ave, Azusa, CA 91702 — (626) 334-0285. Services: OBD testing, motorhome testing. - **[Canyon city carb](https://ctcfinder.com/tester/canyon-city-carb-azusa/)** — 155 N Dalton Ave, Azusa, CA 91702 — (626) 536-8736. Services: mobile testing, OBD testing, motorhome testing. - **[CARB Check California](https://ctcfinder.com/tester/carb-check-california-azusa/)** — 936 Nearfield Street, Azusa, CA 91702 — (626) 250-4123. Services: mobile testing, OBD testing, motorhome testing. - **[Clean Truck Check Testing Azusa](https://ctcfinder.com/tester/clean-truck-check-testing-azusa-azusa/)** — 680 S Ayon Ave, Azusa, CA 91702 — (202) 207-8792. Services: mobile testing, OBD testing, motorhome testing. - **[LA LUBE inc](https://ctcfinder.com/tester/la-lube-inc-azusa/)** — 1111 West Kirkwall Road, Azusa, CA 91702 — (562) 577-1928. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Mark Selinger](https://ctcfinder.com/tester/mark-selinger-azusa/)** — Azusa, CA 91702 — (213) 276-5151. Services: mobile testing, OBD testing. - **[Silva Smog Check](https://ctcfinder.com/tester/silva-smog-check-azusa/)** — 850 W Foothill Blvd Suite 2, Azusa, CA 91702 — (626) 806-6961. Services: mobile testing, OBD testing, motorhome testing. ## More testers within 20 miles - **[Preventive Mobile Inc](https://ctcfinder.com/tester/preventive-mobile-inc-la-verne/)** — 1395 Fairplex Dr A8, La Verne, CA 91750 — (626) 280-5038 — 9 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[RigCheckr](https://ctcfinder.com/tester/rigcheckr-la-verne/)** — 2570 Mono Circle, La Verne, CA 91750 — (702) 275-2044 — 9 mi. Services: mobile testing, OBD testing. - **[V&A’s Clean Truck Check](https://ctcfinder.com/tester/v-and-as-clean-truck-check-la-verne/)** — 1111 Gladstone St, La Verne, CA 91750 — (909) 240-2770 — 9 mi. Services: mobile testing, OBD testing, motorhome testing. - **[188844motor.com](https://ctcfinder.com/tester/188844motor-com-glendora/)** — 512 W Route 66, Glendora, CA 91740 — (951) 258-7309 — 12 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Darling Smog](https://ctcfinder.com/tester/darling-smog-glendora/)** — 743 W Route 66 #4, Glendora, CA 91740 — (626) 495-8835 — 12 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Motor](https://ctcfinder.com/tester/motor-glendora/)** — 512 West Route 66, Glendora, CA 91740 — (626) 551-9057 — 12 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Ricardo Lopez](https://ctcfinder.com/tester/ricardo-lopez-glendora/)** — Glendora, CA 91740 — (909) 764-1991 — 12 mi. Services: mobile testing, OBD testing. - **[Route 66 Smog of Glendora](https://ctcfinder.com/tester/route-66-smog-of-glendora-glendora/)** — 200 East Route 66, Glendora, CA 91740 — (626) 335-2126 — 12 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Exfil Mobile Diesel Solutions Inc](https://ctcfinder.com/tester/exfil-mobile-diesel-solutions-inc-claremont/)** — 4224 Lynoak Drive, Claremont, CA 91711 — (909) 229-2258 — 12 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Fleet Check Mobile](https://ctcfinder.com/tester/fleet-check-mobile-claremont/)** — 272 Carnegie Ave, Claremont, CA 91711 — (909) 921-6533 — 12 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Marcial Orozco](https://ctcfinder.com/tester/marcial-orozco-claremont/)** — Claremont, CA 91711 — (626) 377-1669 — 12 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Professional Elite Fleet services](https://ctcfinder.com/tester/professional-elite-fleet-services-claremont/)** — 613 Converse Ave, Claremont, CA 91711 — (661) 547-9926 — 12 mi. Services: mobile testing, OBD testing, motorhome testing. ## Trucking in Azusa Los Angeles County has more listed testers than any other county. Seaports and intermodal railyards, including the Ports of Los Angeles and Long Beach, must verify Clean Truck Check compliance at entry or log non-compliant trucks (CARB). ## 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 Azusa? CTC Finder lists 7 testing businesses in Azusa 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 Azusa? Yes. 6 listed businesses in Azusa 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 Azusa? 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 - [La Verne](https://ctcfinder.com/testers/los-angeles-county/la-verne/) — 3 listings, 9 mi - [Glendora](https://ctcfinder.com/testers/los-angeles-county/glendora/) — 5 listings, 12 mi - [Claremont](https://ctcfinder.com/testers/los-angeles-county/claremont/) — 4 listings, 12 mi - [San Dimas](https://ctcfinder.com/testers/los-angeles-county/san-dimas/) — 4 listings, 12 mi - [Upland](https://ctcfinder.com/testers/san-bernardino-county/upland/) — 7 listings, 15 mi - [Pomona](https://ctcfinder.com/testers/los-angeles-county/pomona/) — 12 listings, 16 mi - [Montclair](https://ctcfinder.com/testers/san-bernardino-county/montclair/) — 3 listings, 16 mi - [Baldwin Park](https://ctcfinder.com/testers/los-angeles-county/baldwin-park/) — 4 listings, 16 mi - [Rancho Cucamonga](https://ctcfinder.com/testers/san-bernardino-county/rancho-cucamonga/) — 18 listings, 17 mi - [West Covina](https://ctcfinder.com/testers/los-angeles-county/west-covina/) — 5 listings, 17 mi