Clean Truck Check testers in Riverside County
251 testing businesses in Riverside County are on CARB's public tester list, in 34 cities. 233 (93%) offer mobile testing, 102 do smoke opacity tests and 188 test motorhomes.
Cities in Riverside
- Riverside 48
- Corona 18
- Jurupa Valley 18
- Perris 18
- Temecula 18
- Moreno Valley 16
- Menifee 10
- Murrieta 10
- Indio 9
- Beaumont 8
- Eastvale 8
- Lake Elsinore 8
- Norco 8
- Hemet 7
- San Jacinto 7
- Palm Desert 5
- Wildomar 5
- Coachella 4
- Desert Hot Springs 4
- Banning 3
- Nuevo 3
- Thermal 3
Other cities
Bermuda Dunes
-
TW Fleet Service
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
Calimesa
-
Inland Smog Stop
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
Canyon Lake
-
Kyle Ager
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
-
Mobile Carb Truck Check
- Mobile testing
- OBD test
- Motorhomes
Cathedral City
-
Crenshaw Clean Air Testing
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
Indian Wells
-
Smogdoghd
- Mobile testing
- OBD test
- Motorhomes
La Quinta
-
Hector Ruiz
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
Mira Loma
-
Diandre Grant
- Mobile testing
- OBD test
- Motorhomes
Morenovalley
-
Apx Road Service Inc Diesel Repair & Programming
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
Mountain Center
-
Jan Cahill Jr
- Mobile testing
- OBD test
- Motorhomes
Palm Springs
-
PS Smog
- OBD test
- Smoke opacity
- Motorhomes
-
TDC Diesel Repair LLC
- Mobile testing
- OBD test
Whitewater
-
Nina Rochelle
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
Winchester
-
CTC Specialists
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
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.
Source: CARB's public Clean Truck Check tester list, last checked . Listing on CARB's list is optional for testers, so some credentialed testers are not shown. Services, hours and prices change; please confirm with the tester before you go. Something wrong? Send a correction.