Clean Truck Check testers in San Diego County
178 testing businesses in San Diego County are on CARB's public tester list, in 27 cities. 157 (88%) offer mobile testing, 91 do smoke opacity tests and 137 test motorhomes.
Cities in San Diego
- San Diego 42
- El Cajon 24
- Chula Vista 15
- Escondido 13
- Lakeside 12
- Oceanside 9
- Valley Center 9
- Ramona 6
- Santee 6
- Fallbrook 5
- National City 5
- Vista 5
- San Marcos 4
- Carlsbad 3
- Poway 3
Other cities
Alpine
-
Joe's Mobile Carb Certification
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
-
Powerhouse diesel
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
Boulevard
-
DL Enterprises
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
Cardiff By the Sea
-
Carb Testing And Compliance
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
Coronado
-
So Cal Trucking
- Mobile testing
- OBD test
Del Mar
-
Floor Zero, LLC.
- Mobile testing
- OBD test
Encinitas
-
Furgerson's Garage
- OBD test
- Motorhomes
Jamul
-
Adrian Rocha
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
-
Interstate 94
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
La Mesa
-
Avalos Mobile Smog Check
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
-
Dekra Services Inc.
- OBD test
Lemon Grove
-
Smog Or Tune
- OBD test
- Motorhomes
San Clemente
-
Rincon Truck Center INC.
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
San Ysidro
-
Celcor INC
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
-
Jp Black Smoke Solutions
- Mobile testing
- OBD test
Spring Valley
-
Edward Gomez
- Mobile testing
- OBD test
-
Fleet Emissions Solutions
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
Trucking in San Diego
San Diego County includes the Otay Mesa border crossing, California's busiest commercial truck crossing at about one million trucks a year (GSA, 2022).
Frequently asked questions
How many Clean Truck Check testers are in San Diego County?
CTC Finder lists 178 testing businesses in San Diego County from CARB's public tester list (193 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 San Diego County?
Yes. 157 listed businesses in San Diego 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 San Diego 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.