Clean Truck Check testers in Merced County
40 testing businesses in Merced County are on CARB's public tester list, in 10 cities. 35 (88%) offer mobile testing, 12 do smoke opacity tests and 21 test motorhomes.
Cities in Merced
Other cities
Delhi
-
Hargreaves Ranches LLC
- Mobile testing
- OBD test
Gustine
-
Enriquez CTC Check
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
-
Javier Diaz
- Mobile testing
- OBD test
- Motorhomes
Planada
-
Rodriguez Smog
- Mobile testing
- OBD test
Stevinson
-
Valley SmogWorks
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
Winton
Frequently asked questions
How many Clean Truck Check testers are in Merced County?
CTC Finder lists 40 testing businesses in Merced County from CARB's public tester list (40 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 Merced County?
Yes. 35 listed businesses in Merced 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 Merced 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.