Clean Truck Check testers in the San Diego & Imperial
193 testing businesses in the San Diego & Imperial (the California–Mexico border region (Otay Mesa and Calexico)) are on CARB's public Clean Truck Check tester list, with 209 credentialed testers. 171 (89%) offer mobile testing at your yard, 98 do smoke opacity tests for older trucks and 147 test motorhomes. The largest city pages are San Diego (42), El Cajon (24), Chula Vista (15).
Counties in the San Diego & Imperial
Cities with their own page
- San Diego 42
- El Cajon 24
- Chula Vista 15
- Escondido 13
- Lakeside 12
- Oceanside 9
- Valley Center 9
- Ramona 6
- Santee 6
- Calexico 6
- Fallbrook 5
- National City 5
- Vista 5
- San Marcos 4
- El Centro 4
- Carlsbad 3
- Poway 3
- Imperial 3
Smaller cities are listed on their county page.
Testing businesses with several credentialed testers
More credentialed testers usually means more capacity for fleets and before deadlines.
-
Draco Trucks
- Mobile testing
- OBD test
- Smoke opacity
-
SD Heavy Truck & Equipment Repair
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
-
Kearny Mesa Truck Center
- OBD test
- Smoke opacity
- Motorhomes
-
Rincon Truck Center INC.
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
-
Alejandro Valenzuela
- Mobile testing
- OBD test
- Smoke opacity
- Motorhomes
-
Juan Campos - Bulldog Towing
- Mobile testing
- OBD test
- Motorhomes
Trucking in the San Diego & Imperial: what to know
San Diego County includes the Otay Mesa border crossing, California's busiest commercial truck crossing at about one million trucks a year (GSA, 2022), and Imperial County includes the Calexico East crossing. Trucks from Mexico that operate in California are subject to Clean Truck Check, according to CARB.
What a Clean Truck Check costs here
Testers set their own prices. Across the California prices we found, an OBD test usually costs $50–$135 per vehicle and a smoke opacity test $190–$200, plus CARB's annual fee ($32.13 in 2026, $33.12 in 2027). Cost guide · Remote and telematics testing.
Frequently asked questions
How many Clean Truck Check testers are in the San Diego & Imperial?
CTC Finder lists 193 testing businesses in the San Diego & Imperial from CARB's public tester list (209 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 the San Diego & Imperial?
Yes. 171 listed businesses in the San Diego & Imperial offer mobile testing, which means the tester comes to your yard. Each city page has a Mobile filter; see also mobile testers.
How much does a Clean Truck Check test cost in the San Diego & Imperial?
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.
Which San Diego & Imperial cities have the most Clean Truck Check testers?
San Diego (42), El Cajon (24), Chula Vista (15). Every city with 3 or more listings has its own page with phone numbers and a Mobile filter.
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.