--- title: "Clean Truck Check Testers in Richmond, CA (3 listed)" description: "Find 3 CARB-credentialed Clean Truck Check testers in Richmond, Contra Costa County: 3 offer mobile testing, 1 do smoke opacity tests. Phone numbers, services…" url: "https://ctcfinder.com/testers/contra-costa-county/richmond/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Richmond, CA 3 testing businesses in Richmond (Contra Costa County) are on CARB's public Clean Truck Check tester list (3 credentialed testers). 3 offer mobile testing, 1 do smoke opacity tests, 2 test motorhomes. > CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester. ## Testers in Richmond - **[Ba Truck Smog](https://ctcfinder.com/tester/ba-truck-smog-richmond/)** — 400 W Gertrude Ave, Richmond, CA 94801 — (707) 731-3411. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Ozden Auto Services Smog and Clean Truck Check](https://ctcfinder.com/tester/ozden-auto-services-smog-and-clean-truck-check-richmond/)** — 864 23rd St, Richmond, CA 94804 — (510) 590-2004. Services: mobile testing, OBD testing, motorhome testing. - **[Trucking Inc](https://ctcfinder.com/tester/trucking-inc-richmond/)** — 2828 Gonzaga Ave, Richmond, CA 94806 — (209) 737-3137. Services: mobile testing. ## More testers within 20 miles - **[Clean Truck Check](https://ctcfinder.com/tester/clean-truck-check-san-pablo/)** — 1371 23rd St, San Pablo, CA 94806 — (510) 504-7599 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[El Amigo Smog](https://ctcfinder.com/tester/el-amigo-smog-san-pablo/)** — 3024 Giant Rd, San Pablo, CA 94806 — (510) 938-3344 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Jonathan Sordine](https://ctcfinder.com/tester/jonathan-sordine-san-pablo/)** — San Pablo, CA 94806 — (510) 241-6894 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Moiz Abdul](https://ctcfinder.com/tester/moiz-abdul-san-pablo/)** — San Pablo, CA 94806 — (916) 508-6393 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Natha &. Yuli Inc.](https://ctcfinder.com/tester/natha-and-yuli-inc-san-pablo/)** — 980 Stanton Ave, San Pablo, CA 94806 — (510) 815-0030 — 2 mi. Services: mobile testing, OBD testing. - **[Semper Mobile Solutions](https://ctcfinder.com/tester/semper-mobile-solutions-san-pablo/)** — 1000 Lake St, San Pablo, CA 94806 — (650) 201-6734 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Sordini Services](https://ctcfinder.com/tester/sordini-services-san-pablo/)** — 3400 Richmond Pkwy, San Pablo, CA 94806 — (510) 660-7271 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Michael Milat](https://ctcfinder.com/tester/michael-milat-berkeley/)** — Berkeley, CA 94710 — (510) 283-7727 — 6 mi. Services: mobile testing, OBD testing. - **[Hercules CTC Clean Truck Check & Bit Inspection LL](https://ctcfinder.com/tester/hercules-ctc-clean-truck-check-and-bit-inspection-ll-hercules/)** — 205 Ridgeview Ter, Hercules, CA 94547 — (510) 375-2397 — 7 mi. Services: mobile testing, OBD testing. - **[Redwood Engineering](https://ctcfinder.com/tester/redwood-engineering-belvedere-tiburon/)** — Belvedere Tiburon, CA 94920 — (510) 314-9605 — 7 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Pravikesh Singh](https://ctcfinder.com/tester/pravikesh-singh-emeryville/)** — Emeryville, CA 94608 — (510) 621-8314 — 9 mi. Services: mobile testing, OBD testing. - **[Michael Siverson](https://ctcfinder.com/tester/michael-siverson-rodeo/)** — Rodeo, CA 94572 — (510) 672-1557 — 9 mi. Services: mobile testing, OBD testing. ## Cost Typical published prices in California: OBD test $50–$135 per vehicle; smoke opacity test $190–$200. Prices are set by each tester. ## Frequently asked questions ### How many Clean Truck Check testers are in Richmond? CTC Finder lists 3 testing businesses in Richmond from CARB's public tester list (3 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 Richmond? Yes. 3 listed businesses in Richmond 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 Richmond? 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](https://ctcfinder.com/guide/cost/). ### How often does my truck need a Clean Truck Check test? Most trucks test twice a year, on a schedule tied to the DMV registration expiration date. CARB says OBD trucks move to four tests a year beginning October 2027. California-registered (non-commercial) motorhomes and agricultural vehicles test once a year. See the [deadline guide](https://ctcfinder.com/guide/deadlines-2026-2027/). ## Nearby cities - [San Pablo](https://ctcfinder.com/testers/contra-costa-county/san-pablo/) — 7 listings, 2 mi - [Martinez](https://ctcfinder.com/testers/contra-costa-county/martinez/) — 7 listings, 11 mi - [Oakland](https://ctcfinder.com/testers/alameda-county/oakland/) — 15 listings, 13 mi - [Vallejo](https://ctcfinder.com/testers/solano-county/vallejo/) — 8 listings, 14 mi - [San Francisco](https://ctcfinder.com/testers/san-francisco-county/san-francisco/) — 7 listings, 14 mi - [Concord](https://ctcfinder.com/testers/contra-costa-county/concord/) — 7 listings, 18 mi - [Daly City](https://ctcfinder.com/testers/san-mateo-county/daly-city/) — 4 listings, 19 mi - [San Leandro](https://ctcfinder.com/testers/alameda-county/san-leandro/) — 8 listings, 20 mi - [South San Francisco](https://ctcfinder.com/testers/san-mateo-county/south-san-francisco/) — 5 listings, 20 mi - [Sonoma](https://ctcfinder.com/testers/sonoma-county/sonoma/) — 5 listings, 22 mi