--- title: "Clean Truck Check Testers in Commerce, CA (7 listed)" description: "Find 7 CARB-credentialed Clean Truck Check testers in Commerce, Los Angeles County: 7 offer mobile testing, 2 do smoke opacity tests. Phone numbers, services…" url: "https://ctcfinder.com/testers/los-angeles-county/commerce/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Commerce, CA 7 testing businesses in Commerce (Los Angeles County) are on CARB's public Clean Truck Check tester list (8 credentialed testers). 7 offer mobile testing, 2 do smoke opacity tests, 3 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 Commerce - **[FleetCrew INC...](https://ctcfinder.com/tester/fleetcrew-inc-commerce/)** — 4164 East Washington Boulevard, Commerce, CA 90023 — (949) 627-4644. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[CTC Mobile Pros](https://ctcfinder.com/tester/ctc-mobile-pros-commerce/)** — 6741 Lanto Street, Commerce, CA 90040 — (562) 445-5632. Services: mobile testing, OBD testing, motorhome testing. - **[JEE Trucking](https://ctcfinder.com/tester/jee-trucking-commerce/)** — 1449 S Sydney Dr, Commerce, CA 90040 — (323) 637-4252. Services: mobile testing, OBD testing. - **[Katy's Truck Tests](https://ctcfinder.com/tester/katys-truck-tests-commerce/)** — 4638 E Washington Blvd, Commerce, CA 90040 — (323) 379-8707. Services: mobile testing, OBD testing. - **[Lowest Price CTC](https://ctcfinder.com/tester/lowest-price-ctc-commerce/)** — 5611 Sheila St, Commerce, CA 90040 — (424) 431-5360. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Universal Truck Parts LLC](https://ctcfinder.com/tester/universal-truck-parts-llc-commerce/)** — 4638 E Washington Blvd, Commerce, CA 90040 — (323) 216-6226. Services: mobile testing, OBD testing. - **[Universal Truck Parts LLC.- Commerce LAC](https://ctcfinder.com/tester/universal-truck-parts-llc-commerce-lac-commerce/)** — 4638 Washington st., Commerce, CA 90040 — (323) 356-4826. Services: mobile testing, OBD testing. ## More testers within 20 miles - **[A&G Safety Alliance](https://ctcfinder.com/tester/a-and-g-safety-alliance-los-angeles/)** — 951 South Ford Boulevard, Los Angeles, CA 90022 — (562) 572-6969 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Erens CARB Emission Check](https://ctcfinder.com/tester/erens-carb-emission-check-los-angeles/)** — 637 Amalia Ave, Los Angeles, CA 90022 — (323) 794-8109 — 2 mi. Services: mobile testing, OBD testing. - **[Tonys Clean Truck Test](https://ctcfinder.com/tester/tonys-clean-truck-test-maywood/)** — 6118 Woodlawn Ave, Maywood, CA 90270 — (323) 501-3778 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Cox Automotive Dickinson Fleet](https://ctcfinder.com/tester/cox-automotive-dickinson-fleet-bell/)** — Bell, CA 90201 — (463) 231-7162 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Ace Diesel](https://ctcfinder.com/tester/ace-diesel-bell-gardens/)** — 8450 Garfield Ave, Bell Gardens, CA 90201 — (562) 307-2944 — 2 mi. Services: OBD testing. - **[Ace Diesel Service](https://ctcfinder.com/tester/ace-diesel-service-bell-gardens/)** — 8450 Garfield Ave, Bell Gardens, CA 90201 — (562) 307-2941 — 2 mi. Services: OBD testing, smoke opacity (non-OBD) testing. - **[Alex's Auto Smog](https://ctcfinder.com/tester/alexs-auto-smog-bell-gardens/)** — 6301 Florence Ave, Bell Gardens, CA 90201 — (323) 250-2539 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. - **[H and R Mobile truck repair](https://ctcfinder.com/tester/h-and-r-mobile-truck-repair-bell-gardens/)** — 6319 Gifford Ave, Bell Gardens, CA 90201 — (562) 523-5752 — 2 mi. Services: mobile testing, OBD testing. - **[Josue Lucero](https://ctcfinder.com/tester/josue-lucero-bell-gardens/)** — Bell Gardens, CA 90201 — (323) 453-2944 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Carlos Nunez](https://ctcfinder.com/tester/carlos-nunez-montebello/)** — Montebello, CA 90640 — (310) 590-5955 — 3 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Chloe Benoit](https://ctcfinder.com/tester/chloe-benoit-montebello/)** — Montebello, CA 90640 — (213) 275-9851 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Edgar Rodriguez](https://ctcfinder.com/tester/edgar-rodriguez-montebello/)** — Montebello, CA 90640 — (213) 706-1979 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing. ## Trucking in Commerce Los Angeles County has more listed testers than any other county. Seaports and intermodal railyards, including the Ports of Los Angeles and Long Beach, must verify Clean Truck Check compliance at entry or log non-compliant trucks (CARB). ## 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 Commerce? CTC Finder lists 7 testing businesses in Commerce from CARB's public tester list (8 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 Commerce? Yes. 7 listed businesses in Commerce 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 Commerce? 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 - [Bell Gardens](https://ctcfinder.com/testers/los-angeles-county/bell-gardens/) — 5 listings, 2 mi - [Montebello](https://ctcfinder.com/testers/los-angeles-county/montebello/) — 8 listings, 3 mi - [Huntington Park](https://ctcfinder.com/testers/los-angeles-county/huntington-park/) — 10 listings, 4 mi - [Monterey Park](https://ctcfinder.com/testers/los-angeles-county/monterey-park/) — 3 listings, 4 mi - [Pico Rivera](https://ctcfinder.com/testers/los-angeles-county/pico-rivera/) — 6 listings, 4 mi - [Downey](https://ctcfinder.com/testers/los-angeles-county/downey/) — 9 listings, 4 mi - [South Gate](https://ctcfinder.com/testers/los-angeles-county/south-gate/) — 13 listings, 4 mi - [Lynwood](https://ctcfinder.com/testers/los-angeles-county/lynwood/) — 6 listings, 6 mi - [Alhambra](https://ctcfinder.com/testers/los-angeles-county/alhambra/) — 5 listings, 6 mi - [South El Monte](https://ctcfinder.com/testers/los-angeles-county/south-el-monte/) — 3 listings, 7 mi