--- title: "Clean Truck Check Testers in Kern County, CA (107)" description: "107 CARB-credentialed Clean Truck Check testers in Kern County, California, across 15 cities. 89 offer mobile testing. Search by city, see phone numbers and…" url: "https://ctcfinder.com/testers/kern-county/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Kern County, California 107 testing businesses in 15 cities; 89 offer mobile testing, 53 do smoke opacity tests, 72 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. ## City pages - [Bakersfield](https://ctcfinder.com/testers/kern-county/bakersfield/) — 78 listings - [Delano](https://ctcfinder.com/testers/kern-county/delano/) — 6 listings - [Shafter](https://ctcfinder.com/testers/kern-county/shafter/) — 4 listings - [Ridgecrest](https://ctcfinder.com/testers/kern-county/ridgecrest/) — 3 listings - [Tehachapi](https://ctcfinder.com/testers/kern-county/tehachapi/) — 3 listings ## Arvin - **[Flavio Gonzalez](https://ctcfinder.com/tester/flavio-gonzalez-arvin/)** — Arvin, CA 93203 — (661) 432-0745. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Buttonwillow - **[Zoraida Sierra Baez](https://ctcfinder.com/tester/zoraida-sierra-baez-buttonwillow/)** — Buttonwillow, CA 93206 — (661) 201-7677. Services: OBD testing. ## Fellows - **[FJM Rentals](https://ctcfinder.com/tester/fjm-rentals-fellows/)** — Fellows, CA 93224 — (661) 747-3946. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Lake Isabella - **[Mt Mesa Automotive](https://ctcfinder.com/tester/mt-mesa-automotive-lake-isabella/)** — 12504 Mountain Mesa Rd, Lake Isabella, CA 93240 — (760) 379-9100. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Lamont - **[Smog Axis](https://ctcfinder.com/tester/smog-axis-lamont/)** — 10011 Main St Suite B, Lamont, CA 93241 — (661) 378-4413. Services: mobile testing, OBD testing, motorhome testing. ## Lebec - **[Fas Automotive](https://ctcfinder.com/tester/fas-automotive-lebec/)** — 601 Lebec Rd, Lebec, CA 93243 — (661) 777-8535. Services: mobile testing, OBD testing, motorhome testing. ## Mc Farland - **[Reuchon Transport](https://ctcfinder.com/tester/reuchon-transport-mc-farland/)** — 12239 Garzoli Ave, Mc Farland, CA 93250 — (661) 709-0460. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Rosamond - **[Big iron](https://ctcfinder.com/tester/big-iron-rosamond/)** — Rosamond, CA 93560 — (661) 643-2427. Services: mobile testing, OBD testing. - **[Snail Race Transportation LLC](https://ctcfinder.com/tester/snail-race-transportation-llc-rosamond/)** — 2156 Manchester St, Rosamond, CA 93560 — (661) 537-5376. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Taft - **[Bobby Bonds OBD Testing](https://ctcfinder.com/tester/bobby-bonds-obd-testing-taft/)** — 27520 Pine St, Taft, CA 93268 — (661) 706-5731. Services: mobile testing, OBD testing, motorhome testing. - **[David Melton](https://ctcfinder.com/tester/david-melton-taft/)** — Taft, CA 93268 — (661) 428-8392. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Wasco - **[Kern Diesel Repair LLC](https://ctcfinder.com/tester/kern-diesel-repair-llc-wasco/)** — 407 Quaking Aspen Ave, Wasco, CA 93280 — (661) 375-5936. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[L & M Truck and Equipment LLC](https://ctcfinder.com/tester/l-and-m-truck-and-equipment-llc-wasco/)** — 308 Sagebrush Ct, Wasco, CA 93280 — (661) 583-9700. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing. ## Trucking in Kern Kern County, led by Bakersfield, mixes oil-field service, agriculture and long-haul trucking on SR-99, I-5 and SR-58. ## Frequently asked questions ### How many Clean Truck Check testers are in Kern County? CTC Finder lists 107 testing businesses in Kern County from CARB's public tester list (119 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 Kern County? Yes. 89 listed businesses in Kern 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 Kern 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](https://ctcfinder.com/guide/cost/).