--- title: "Clean Truck Check Testers in Thermal, CA (3 listed)" description: "Find 3 CARB-credentialed Clean Truck Check testers in Thermal, Riverside County: 3 offer mobile testing, 1 do smoke opacity tests. Phone numbers, services and…" url: "https://ctcfinder.com/testers/riverside-county/thermal/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Thermal, CA 3 testing businesses in Thermal (Riverside County) are on CARB's public Clean Truck Check tester list (5 credentialed testers). 3 offer mobile testing, 1 do smoke opacity tests, 3 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 Thermal - **[Thermal Truck and RV](https://ctcfinder.com/tester/thermal-truck-and-rv-thermal/)** — 57100 Desert Cactus Dr, Thermal, CA 92274 — (760) 399-9773. Services: mobile testing, OBD testing, motorhome testing. - **[Avc Farm and Auto Repair](https://ctcfinder.com/tester/avc-farm-and-auto-repair-thermal/)** — 66808 Harrison St, Thermal, CA 92274 — (760) 296-4565. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[MCF](https://ctcfinder.com/tester/mcf-thermal/)** — 1244 Penelope Ave, Thermal, CA 92274 — (760) 625-9256. Services: mobile testing, OBD testing, motorhome testing. ## More testers within 20 miles - **[CV Smog Inc](https://ctcfinder.com/tester/cv-smog-inc-coachella/)** — 85900 Grapefruit Blvd, Coachella, CA 92236 — (760) 275-5984 — 16 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Drc Custom Fabrication](https://ctcfinder.com/tester/drc-custom-fabrication-coachella/)** — Coachella, CA 92236 — (760) 610-3807 — 16 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Jmj truck & tire repair inc](https://ctcfinder.com/tester/jmj-truck-and-tire-repair-inc-coachella/)** — 84139 Laguna Ln, Coachella, CA 92236 — (442) 234-3187 — 16 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Jose Garcia Contreras](https://ctcfinder.com/tester/jose-garcia-contreras-coachella/)** — Coachella, CA 92236 — (424) 559-8495 — 16 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Hector Ruiz](https://ctcfinder.com/tester/hector-ruiz-la-quinta/)** — La Quinta, CA 92253 — (760) 574-8203 — 16 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Afterhoursfleetsvc](https://ctcfinder.com/tester/afterhoursfleetsvc-indio/)** — 81459 Fuchsia Ave, Indio, CA 92201 — (760) 574-8203 — 18 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Best Value Smog Center](https://ctcfinder.com/tester/best-value-smog-center-indio/)** — Indio, CA 92201 — (760) 625-3520 — 18 mi. Services: mobile testing, OBD testing. - **[Cono's smog stop](https://ctcfinder.com/tester/conos-smog-stop-indio/)** — 82944 Avenue 44, Indio, CA 92201 — (760) 625-9721 — 18 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Kiko's Smog Station](https://ctcfinder.com/tester/kikos-smog-station-indio/)** — 83386 US Highway 111, Indio, CA 92201 — (442) 933-0029 — 18 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Liam Manzano](https://ctcfinder.com/tester/liam-manzano-indio/)** — Indio, CA 92201 — (760) 899-0409 — 18 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Ross](https://ctcfinder.com/tester/ross-indio/)** — 50140 Vista Montana Ct, Indio, CA 92201 — (909) 556-0606 — 18 mi. Services: not listed. - **[Tom Stanford](https://ctcfinder.com/tester/tom-stanford-indio/)** — Indio, CA 92201 — (760) 250-4590 — 18 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Trucking in Thermal 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. ## 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 Thermal? CTC Finder lists 3 testing businesses in Thermal from CARB's public tester list (5 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 Thermal? Yes. 3 listed businesses in Thermal 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 Thermal? 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 - [Coachella](https://ctcfinder.com/testers/riverside-county/coachella/) — 4 listings, 16 mi - [Indio](https://ctcfinder.com/testers/riverside-county/indio/) — 9 listings, 19 mi - [Palm Desert](https://ctcfinder.com/testers/riverside-county/palm-desert/) — 5 listings, 23 mi