--- title: "Clean Truck Check Testers in Rancho Cucamonga, CA (18 listed)" description: "Find 18 CARB-credentialed Clean Truck Check testers in Rancho Cucamonga, San Bernardino County: 17 offer mobile testing, 3 do smoke opacity tests. Phone…" url: "https://ctcfinder.com/testers/san-bernardino-county/rancho-cucamonga/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Rancho Cucamonga, CA 18 testing businesses in Rancho Cucamonga (San Bernardino County) are on CARB's public Clean Truck Check tester list (19 credentialed testers). 17 offer mobile testing, 3 do smoke opacity tests, 13 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 Rancho Cucamonga - **[MMM Emissions](https://ctcfinder.com/tester/mmm-emissions-rancho-cucamonga/)** — 9375 PLACER STREET RANCHO CUCAMUMGA CA 91730, Rancho Cucamonga, CA 91730 — (909) 819-8478. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Center Lane Transportation, LLC](https://ctcfinder.com/tester/center-lane-transportation-llc-rancho-cucamonga/)** — Rancho Cucamonga, CA 91730 — (619) 598-6998. Services: mobile testing, OBD testing, motorhome testing. - **[DSK Trucking Solutions Inc](https://ctcfinder.com/tester/dsk-trucking-solutions-inc-rancho-cucamonga/)** — Rancho Cucamonga, CA 91730 — (909) 755-9618. Services: mobile testing, OBD testing, motorhome testing. - **[Express Bitz Inc](https://ctcfinder.com/tester/express-bitz-inc-rancho-cucamonga/)** — 9031 Avalon St, Rancho Cucamonga, CA 91701 — (626) 848-7213. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[F&K Smog Services](https://ctcfinder.com/tester/f-and-k-smog-services-rancho-cucamonga/)** — Rancho Cucamonga, CA 91701 — (909) 224-8772. Services: mobile testing, OBD testing. - **[Gerardo Franco](https://ctcfinder.com/tester/gerardo-franco-rancho-cucamonga/)** — Rancho Cucamonga, CA 91737 — (626) 255-1244. Services: mobile testing, OBD testing, motorhome testing. - **[GLB Carb Inspection](https://ctcfinder.com/tester/glb-carb-inspection-rancho-cucamonga/)** — 13293 Whittram Ave, Rancho Cucamonga, CA 91739 — (323) 713-7170. Services: mobile testing, OBD testing, motorhome testing. - **[Heriberto Eddie Casarez](https://ctcfinder.com/tester/heriberto-eddie-casarez-rancho-cucamonga/)** — Rancho Cucamonga, CA 91730 — (909) 730-5600. Services: mobile testing, OBD testing, motorhome testing. - **[Idp clean truck check](https://ctcfinder.com/tester/idp-clean-truck-check-rancho-cucamonga/)** — Rancho Cucamonga, CA 91739 — (562) 477-3217. Services: mobile testing, OBD testing, motorhome testing. - **[J-Tech Services Inc](https://ctcfinder.com/tester/j-tech-services-inc-rancho-cucamonga/)** — 7211 Haven Ave Ste E-591, Rancho Cucamonga, CA 91701 — (626) 672-5386. Services: mobile testing, OBD testing, motorhome testing. - **[Jayden Russell](https://ctcfinder.com/tester/jayden-russell-rancho-cucamonga/)** — Rancho Cucamonga, CA 91730 — (818) 406-8141. Services: not listed. - **[JS Clean Truck Check](https://ctcfinder.com/tester/js-clean-truck-check-rancho-cucamonga/)** — 7038 Kinlock Ave, Rancho Cucamonga, CA 91701 — (323) 789-9414. Services: mobile testing, OBD testing, motorhome testing. - **[Lucky Clean Truck Check](https://ctcfinder.com/tester/lucky-clean-truck-check-rancho-cucamonga/)** — 11610 Mount Rainier Ct, Rancho Cucamonga, CA 91737 — (909) 731-1966. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Maldonado CTC Inspections](https://ctcfinder.com/tester/maldonado-ctc-inspections-rancho-cucamonga/)** — 10131 Thorpe Ct, Rancho Cucamonga, CA 91737 — (909) 527-5693. Services: mobile testing, OBD testing, motorhome testing. - **[RH Mobile Truck & Trailer Repair](https://ctcfinder.com/tester/rh-mobile-truck-and-trailer-repair-rancho-cucamonga/)** — 9345 Calle Vejar, Rancho Cucamonga, CA 91730 — (951) 285-4546. Services: mobile testing, OBD testing. - **[Seven Star Carrier](https://ctcfinder.com/tester/seven-star-carrier-rancho-cucamonga/)** — 9556 Bluewater Pl, Rancho Cucamonga, CA 91730 — (909) 694-8426. Services: mobile testing, OBD testing, motorhome testing. - **[UFF Truck & Trailer Repair](https://ctcfinder.com/tester/uff-truck-and-trailer-repair-rancho-cucamonga/)** — 13138 Whittram Ave, Rancho Cucamonga, CA 91739 — (951) 204-0420. Services: mobile testing, OBD testing. - **[West Caost Fleet Service](https://ctcfinder.com/tester/west-caost-fleet-service-rancho-cucamonga/)** — 7245 Lion St, Rancho Cucamonga, CA 91701 — (909) 702-2462. Services: mobile testing, OBD testing. ## More testers within 20 miles - **[Andrew Gallegos](https://ctcfinder.com/tester/andrew-gallegos-ontario/)** — Ontario, CA 91764 — (909) 919-4606 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Cmax Commercial maintenance](https://ctcfinder.com/tester/cmax-commercial-maintenance-ontario/)** — 316 N Corona Ave, Ontario, CA 91764 — (909) 926-1389 — 4 mi. Services: mobile testing, OBD testing. - **[Mobile 2u Fleet Service LLC](https://ctcfinder.com/tester/mobile-2u-fleet-service-llc-ontario/)** — 337 N Vineyard Ave, Ontario, CA 91764 — (209) 424-4921 — 4 mi. Services: mobile testing, OBD testing. - **[Mobile Fleet Test](https://ctcfinder.com/tester/mobile-fleet-test-ontario/)** — 1276 E Flora St, Ontario, CA 91764 — (909) 503-2811 — 4 mi. Services: mobile testing, OBD testing, motorhome testing. - **[MVPS Consultants](https://ctcfinder.com/tester/mvps-consultants-ontario/)** — Ontario, CA 91764 — (909) 781-0546 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[SoCal Clean Truck Check Llc](https://ctcfinder.com/tester/socal-clean-truck-check-llc-ontario/)** — 1312 N El Dorado Av, Ontario, CA 91764 — (951) 256-6933 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Allen Halbert](https://ctcfinder.com/tester/allen-halbert-upland/)** — Upland, CA 91786 — (909) 222-7009 — 5 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Carlos N/A](https://ctcfinder.com/tester/carlos-n-a-upland/)** — 154 W Foothill Blvd, Upland, CA 91786 — (909) 767-1720 — 5 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Foothill Quicky smog](https://ctcfinder.com/tester/foothill-quicky-smog-upland/)** — 2016 W Foothill Blvd, Upland, CA 91786 — (626) 343-6623 — 5 mi. Services: OBD testing, motorhome testing. - **[Foothill Quicky Smog](https://ctcfinder.com/tester/foothill-quicky-smog-upland-2/)** — 2016 W Foothill Blvd Suite B, Upland, CA 91786 — (760) 524-4254 — 5 mi. Services: OBD testing, motorhome testing. - **[Foothill Quicky Smog 2](https://ctcfinder.com/tester/foothill-quicky-smog-2-upland/)** — 903 N Central Ave F, Upland, CA 91786 — (909) 969-4443 — 5 mi. Services: OBD testing, motorhome testing. - **[Next GEN Clean Truck Check](https://ctcfinder.com/tester/next-gen-clean-truck-check-upland/)** — 555 Alpine St #A, Upland, CA 91786 — (626) 622-5438 — 5 mi. Services: mobile testing, OBD testing. ## Trucking in Rancho Cucamonga 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 Rancho Cucamonga? CTC Finder lists 18 testing businesses in Rancho Cucamonga from CARB's public tester list (19 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 Rancho Cucamonga? Yes. 17 listed businesses in Rancho Cucamonga 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 Rancho Cucamonga? 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, 5 mi - [Ontario](https://ctcfinder.com/testers/san-bernardino-county/ontario/) — 31 listings, 6 mi - [Fontana](https://ctcfinder.com/testers/san-bernardino-county/fontana/) — 49 listings, 7 mi - [Claremont](https://ctcfinder.com/testers/los-angeles-county/claremont/) — 4 listings, 8 mi - [Montclair](https://ctcfinder.com/testers/san-bernardino-county/montclair/) — 3 listings, 8 mi - [Chino](https://ctcfinder.com/testers/san-bernardino-county/chino/) — 9 listings, 11 mi - [Rialto](https://ctcfinder.com/testers/san-bernardino-county/rialto/) — 18 listings, 11 mi - [La Verne](https://ctcfinder.com/testers/los-angeles-county/la-verne/) — 3 listings, 11 mi - [Jurupa Valley](https://ctcfinder.com/testers/riverside-county/jurupa-valley/) — 18 listings, 11 mi - [Pomona](https://ctcfinder.com/testers/los-angeles-county/pomona/) — 12 listings, 11 mi