--- title: "Clean Truck Check Testers in Montclair, CA (3 listed)" description: "Find 3 CARB-credentialed Clean Truck Check testers in Montclair, San Bernardino County: 3 offer mobile testing, 0 do smoke opacity tests. Phone numbers…" url: "https://ctcfinder.com/testers/san-bernardino-county/montclair/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Montclair, CA 3 testing businesses in Montclair (San Bernardino County) are on CARB's public Clean Truck Check tester list (3 credentialed testers). 3 offer mobile testing, 0 do smoke opacity tests, 1 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 Montclair - **[Montclair smog center](https://ctcfinder.com/tester/montclair-smog-center-montclair/)** — Montclair, CA 91763 — (626) 650-9633. Services: mobile testing, OBD testing, motorhome testing. - **[Nancys Truck Registration & Permits](https://ctcfinder.com/tester/nancys-truck-registration-and-permits-montclair/)** — 5461 Holt Blvd STE A, Montclair, CA 91763 — (909) 489-2172. Services: mobile testing, OBD testing. - **[Sergio Hermosillo](https://ctcfinder.com/tester/sergio-hermosillo-montclair/)** — Montclair, CA 91763 — (626) 646-8837. Services: mobile testing. ## More testers within 20 miles - **[Aaron Davis -CLEAN TRUCK MOBILE TESTERS](https://ctcfinder.com/tester/aaron-davis-clean-truck-mobile-testers-ontario/)** — 2632 E Harlow Ln, Ontario, CA 91762 — (310) 345-7661 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Avid Smog, Inc](https://ctcfinder.com/tester/avid-smog-inc-ontario/)** — 1409 W Holt Bl, Ontario, CA 91762 — (909) 292-6926 — 2 mi. Services: mobile testing, OBD testing. - **[Brian Tran](https://ctcfinder.com/tester/brian-tran-ontario/)** — Ontario, CA 91762 — (714) 417-3611 — 2 mi. Services: OBD testing. - **[Carlos Pinal](https://ctcfinder.com/tester/carlos-pinal-ontario/)** — Ontario, CA 91762 — (626) 620-3167 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Chevez Wilber](https://ctcfinder.com/tester/chevez-wilber-ontario/)** — Ontario, CA 91762 — (323) 448-5771 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Gl Welding and Repair](https://ctcfinder.com/tester/gl-welding-and-repair-ontario/)** — 1525 S Briar Av, Ontario, CA 91762 — (626) 374-3357 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Juan Zamora](https://ctcfinder.com/tester/juan-zamora-ontario/)** — Ontario, CA 91762 — (909) 331-9442 — 2 mi. Services: mobile testing, OBD testing. - **[Ontario Smog](https://ctcfinder.com/tester/ontario-smog-ontario/)** — 152 N Mountain Av, Ontario, CA 91762 — (951) 473-0405 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Pestrada Clean Truck Check](https://ctcfinder.com/tester/pestrada-clean-truck-check-ontario/)** — Ontario, CA 91762 — (818) 296-7698 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Raul Martinez](https://ctcfinder.com/tester/raul-martinez-ontario/)** — Ontario, CA 91762 — (818) 426-8244 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Tony Arellano](https://ctcfinder.com/tester/tony-arellano-ontario/)** — Ontario, CA 91762 — (562) 552-0296 — 2 mi. Services: mobile testing, OBD testing. - **[Waynes Automotve](https://ctcfinder.com/tester/waynes-automotve-ontario/)** — Ontario, CA 91762 — (909) 239-2288 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. ## Trucking in Montclair San Bernardino County covers most of the Inland Empire warehouse belt (Fontana, Ontario, Rialto, San Bernardino) and the High Desert along I-15. The Inland Empire holds roughly a billion square feet of warehouse space (Pitzer College estimate), so local fleets and owner-operators run a high volume of tests. Mobile testers who visit distribution centers and truck yards are common here. ## 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 Montclair? CTC Finder lists 3 testing businesses in Montclair 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 Montclair? Yes. 3 listed businesses in Montclair 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 Montclair? 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 - [Upland](https://ctcfinder.com/testers/san-bernardino-county/upland/) — 7 listings, 3 mi - [Pomona](https://ctcfinder.com/testers/los-angeles-county/pomona/) — 12 listings, 3 mi - [Claremont](https://ctcfinder.com/testers/los-angeles-county/claremont/) — 4 listings, 4 mi - [Ontario](https://ctcfinder.com/testers/san-bernardino-county/ontario/) — 31 listings, 4 mi - [Chino](https://ctcfinder.com/testers/san-bernardino-county/chino/) — 9 listings, 5 mi - [La Verne](https://ctcfinder.com/testers/los-angeles-county/la-verne/) — 3 listings, 7 mi - [San Dimas](https://ctcfinder.com/testers/los-angeles-county/san-dimas/) — 4 listings, 7 mi - [Rancho Cucamonga](https://ctcfinder.com/testers/san-bernardino-county/rancho-cucamonga/) — 18 listings, 8 mi - [Glendora](https://ctcfinder.com/testers/los-angeles-county/glendora/) — 5 listings, 10 mi - [Walnut](https://ctcfinder.com/testers/los-angeles-county/walnut/) — 3 listings, 10 mi