--- title: "Clean Truck Check Testers in Riverside County, CA (251)" description: "251 CARB-credentialed Clean Truck Check testers in Riverside County, California, across 34 cities. 233 offer mobile testing. Search by city, see phone numbers…" url: "https://ctcfinder.com/testers/riverside-county/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Riverside County, California 251 testing businesses in 34 cities; 233 offer mobile testing, 102 do smoke opacity tests, 188 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. ## City pages - [Riverside](https://ctcfinder.com/testers/riverside-county/riverside/) — 48 listings - [Corona](https://ctcfinder.com/testers/riverside-county/corona/) — 18 listings - [Jurupa Valley](https://ctcfinder.com/testers/riverside-county/jurupa-valley/) — 18 listings - [Perris](https://ctcfinder.com/testers/riverside-county/perris/) — 18 listings - [Temecula](https://ctcfinder.com/testers/riverside-county/temecula/) — 18 listings - [Moreno Valley](https://ctcfinder.com/testers/riverside-county/moreno-valley/) — 16 listings - [Menifee](https://ctcfinder.com/testers/riverside-county/menifee/) — 10 listings - [Murrieta](https://ctcfinder.com/testers/riverside-county/murrieta/) — 10 listings - [Indio](https://ctcfinder.com/testers/riverside-county/indio/) — 9 listings - [Beaumont](https://ctcfinder.com/testers/riverside-county/beaumont/) — 8 listings - [Eastvale](https://ctcfinder.com/testers/riverside-county/eastvale/) — 8 listings - [Lake Elsinore](https://ctcfinder.com/testers/riverside-county/lake-elsinore/) — 8 listings - [Norco](https://ctcfinder.com/testers/riverside-county/norco/) — 8 listings - [Hemet](https://ctcfinder.com/testers/riverside-county/hemet/) — 7 listings - [San Jacinto](https://ctcfinder.com/testers/riverside-county/san-jacinto/) — 7 listings - [Palm Desert](https://ctcfinder.com/testers/riverside-county/palm-desert/) — 5 listings - [Wildomar](https://ctcfinder.com/testers/riverside-county/wildomar/) — 5 listings - [Coachella](https://ctcfinder.com/testers/riverside-county/coachella/) — 4 listings - [Desert Hot Springs](https://ctcfinder.com/testers/riverside-county/desert-hot-springs/) — 4 listings - [Banning](https://ctcfinder.com/testers/riverside-county/banning/) — 3 listings - [Nuevo](https://ctcfinder.com/testers/riverside-county/nuevo/) — 3 listings - [Thermal](https://ctcfinder.com/testers/riverside-county/thermal/) — 3 listings ## Bermuda Dunes - **[TW Fleet Service](https://ctcfinder.com/tester/tw-fleet-service-bermuda-dunes/)** — 79499 Country Club Dr, Bermuda Dunes, CA 92203 — (760) 822-4347. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Calimesa - **[Inland Smog Stop](https://ctcfinder.com/tester/inland-smog-stop-calimesa/)** — 905 Calimesa Blvd, Calimesa, CA 92320 — (909) 222-7127. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Canyon Lake - **[Kyle Ager](https://ctcfinder.com/tester/kyle-ager-canyon-lake/)** — Canyon Lake, CA 92587 — (714) 651-2528. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Mobile Carb Truck Check](https://ctcfinder.com/tester/mobile-carb-truck-check-canyon-lake/)** — 22720 Inspiration Pt, Canyon Lake, CA 92587 — (951) 634-9320. Services: mobile testing, OBD testing, motorhome testing. ## Cathedral City - **[Crenshaw Clean Air Testing](https://ctcfinder.com/tester/crenshaw-clean-air-testing-cathedral-city/)** — 27405 Landau Blvd, Cathedral City, CA 92234 — (760) 960-3267. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Indian Wells - **[Smogdoghd](https://ctcfinder.com/tester/smogdoghd-indian-wells/)** — 75440 Painted Desert Dr, Indian Wells, CA 92210 — (760) 574-0420. Services: mobile testing, OBD testing, motorhome testing. ## La Quinta - **[Hector Ruiz](https://ctcfinder.com/tester/hector-ruiz-la-quinta/)** — La Quinta, CA 92253 — (760) 574-8203. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Mira Loma - **[Diandre Grant](https://ctcfinder.com/tester/diandre-grant-mira-loma/)** — Mira Loma, CA 91752 — (562) 303-4355. Services: mobile testing, OBD testing, motorhome testing. ## Morenovalley - **[Apx Road Service Inc Diesel Repair & Programming](https://ctcfinder.com/tester/apx-road-service-inc-diesel-repair-and-programming-morenovalley/)** — 11875 Pigeon Pass Rd steb13135, Morenovalley, CA 92557 — (951) 287-6804. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Mountain Center - **[Jan Cahill Jr](https://ctcfinder.com/tester/jan-cahill-jr-mountain-center/)** — Mountain Center, CA 92561 — (760) 803-7424. Services: mobile testing, OBD testing, motorhome testing. ## Palm Springs - **[PS Smog](https://ctcfinder.com/tester/ps-smog-palm-springs/)** — 4633 E Ramon Rd, Palm Springs, CA 92264 — (760) 778-7664. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[TDC Diesel Repair LLC](https://ctcfinder.com/tester/tdc-diesel-repair-llc-palm-springs/)** — Palm Springs, CA 92262 — (442) 666-9267. Services: mobile testing, OBD testing. ## Whitewater - **[Nina Rochelle](https://ctcfinder.com/tester/nina-rochelle-whitewater/)** — Whitewater, CA 92282 — (562) 318-5248. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Winchester - **[CTC Specialists](https://ctcfinder.com/tester/ctc-specialists-winchester/)** — 35197 Lantern Light Dr, Winchester, CA 92596 — (951) 422-2827. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Trucking in Riverside Riverside County includes the western Inland Empire logistics corridor (Riverside, Jurupa Valley, Moreno Valley, Perris) and the Coachella Valley. 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. ## Frequently asked questions ### How many Clean Truck Check testers are in Riverside County? CTC Finder lists 251 testing businesses in Riverside County from CARB's public tester list (262 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 Riverside County? Yes. 233 listed businesses in Riverside County 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 Riverside County? 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/).