Clean Truck Check testers in the San Francisco Bay Area

344 testing businesses in the San Francisco Bay Area (the nine Bay Area counties, Oakland, San Jose and the East Bay) are on CARB's public Clean Truck Check tester list, with 362 credentialed testers. 304 (88%) offer mobile testing at your yard, 162 do smoke opacity tests for older trucks and 233 test motorhomes. The largest city pages are San Jose (41), Hayward (18), Santa Rosa (17).

Counties in the San Francisco Bay Area

Cities with their own page

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.

Trucking in the San Francisco Bay Area: what to know

Bay Area trucks serve the Port of Oakland, which runs its own Comprehensive Truck Management Program; seaport facilities must verify Clean Truck Check compliance at entry or log non-compliant trucks (CARB). The I-880 corridor (Oakland, San Leandro, Hayward, Fremont) holds many trucking and distribution fleets. Tester supply is small for the truck volume near the port, so many truckers use mobile testers.

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 Francisco Bay Area?

CTC Finder lists 344 testing businesses in the San Francisco Bay Area from CARB's public tester list (362 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 Francisco Bay Area?

Yes. 304 listed businesses in the San Francisco Bay Area 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 Francisco Bay Area?

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 Francisco Bay Area cities have the most Clean Truck Check testers?

San Jose (41), Hayward (18), Santa Rosa (17). 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.