--- title: "Clean Truck Check Testers in Auburn, CA (7 listed)" description: "Find 7 CARB-credentialed Clean Truck Check testers in Auburn, Placer County: 7 offer mobile testing, 4 do smoke opacity tests. Phone numbers, services and…" url: "https://ctcfinder.com/testers/placer-county/auburn/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Auburn, CA 7 testing businesses in Auburn (Placer County) are on CARB's public Clean Truck Check tester list (7 credentialed testers). 7 offer mobile testing, 4 do smoke opacity tests, 7 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 Auburn - **[Allen l Chitty](https://ctcfinder.com/tester/allen-l-chitty-auburn/)** — Auburn, CA 95602 — (916) 225-0454. Services: mobile testing, OBD testing, motorhome testing. - **[CAP City Diesel Inspections](https://ctcfinder.com/tester/cap-city-diesel-inspections-auburn/)** — 2945 Bell Rd, Auburn, CA 95603 — (916) 538-7777. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[CARB Compliant Mobile Testing](https://ctcfinder.com/tester/carb-compliant-mobile-testing-auburn/)** — 11590 Stonebrook Dr, Auburn, CA 95603 — (916) 572-4917. Services: mobile testing, OBD testing, motorhome testing. - **[Juan Renderos](https://ctcfinder.com/tester/juan-renderos-auburn/)** — Auburn, CA 95603 — (949) 547-2585. Services: mobile testing, OBD testing, motorhome testing. - **[Lightfoot Mobile Truck Emissions](https://ctcfinder.com/tester/lightfoot-mobile-truck-emissions-auburn/)** — 12345 Hyde Park Ln, Auburn, CA 95603 — (916) 849-0426. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Truck & RV TESTING](https://ctcfinder.com/tester/truck-and-rv-testing-auburn/)** — Auburn, CA 95602 — (916) 538-7777. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Williams Heavy Equipment](https://ctcfinder.com/tester/williams-heavy-equipment-auburn/)** — 10556 Combie Rd #6437, Auburn, CA 95949 — (530) 913-6597. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## More testers within 20 miles - **[Motorhome/Truck test](https://ctcfinder.com/tester/motorhome-truck-test-newcastle/)** — Newcastle, CA 95658 — (916) 243-5089 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Samuel Nikoto- TRUCK, BUS, RV Mobile Testing](https://ctcfinder.com/tester/samuel-nikoto-truck-bus-rv-mobile-testing-newcastle/)** — Newcastle, CA 95658 — (916) 538-7777 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[EZE Testing Services](https://ctcfinder.com/tester/eze-testing-services-cool/)** — 4209 Cherry Acres Cir, Cool, CA 95614 — (530) 350-0467 — 8 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Mobile Diesel Emissions Testing Inc](https://ctcfinder.com/tester/mobile-diesel-emissions-testing-inc-loomis/)** — 4010 Barton Rd, Loomis, CA 95650 — (916) 530-2525 — 11 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Tony Chen- Loomis, CA credentialed tester](https://ctcfinder.com/tester/tony-chen-loomis-ca-credentialed-tester-loomis/)** — Loomis, CA 95650 — (916) 538-7777 — 11 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Capital City Diesel Inspections- TRUCK, BUS, RV](https://ctcfinder.com/tester/capital-city-diesel-inspections-truck-bus-rv-lincoln/)** — 69 Lincoln Blvd, Lincoln, CA 95648 — (916) 538-7777 — 12 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[EcoEmissions Mobile](https://ctcfinder.com/tester/ecoemissions-mobile-lincoln/)** — 2793 Lindbergh Ln, Lincoln, CA 95648 — (916) 276-1953 — 12 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Lawrence Woo](https://ctcfinder.com/tester/lawrence-woo-lincoln/)** — Lincoln, CA 95648 — (415) 269-0884 — 12 mi. Services: OBD testing. - **[Sacramento Valley RV - Kevin Ewert](https://ctcfinder.com/tester/sacramento-valley-rv-kevin-ewert-lincoln/)** — 3130 Venture Dr. Ste 100, Lincoln, CA 95648 — (916) 807-4600 — 12 mi. Services: OBD testing, motorhome testing. - **[North State Mobile Solutions](https://ctcfinder.com/tester/north-state-mobile-solutions-colfax/)** — 1 N Main St, Colfax, CA 95713 — (916) 345-4847 — 12 mi. Services: mobile testing, OBD testing, motorhome testing. - **[NorthState Mobile Smoke Testing](https://ctcfinder.com/tester/northstate-mobile-smoke-testing-colfax/)** — 1125 Dallimore Rd, Colfax, CA 95713 — (916) 628-9061 — 12 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Quentin Turek](https://ctcfinder.com/tester/quentin-turek-colfax/)** — Colfax, CA 95713 — (916) 472-4130 — 12 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome 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 Auburn? CTC Finder lists 7 testing businesses in Auburn from CARB's public tester list (7 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 Auburn? Yes. 7 listed businesses in Auburn 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 Auburn? 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 - [Lincoln](https://ctcfinder.com/testers/placer-county/lincoln/) — 4 listings, 12 mi - [Colfax](https://ctcfinder.com/testers/placer-county/colfax/) — 3 listings, 12 mi - [Rocklin](https://ctcfinder.com/testers/placer-county/rocklin/) — 6 listings, 14 mi - [Roseville](https://ctcfinder.com/testers/placer-county/roseville/) — 12 listings, 18 mi - [Folsom](https://ctcfinder.com/testers/sacramento-county/folsom/) — 5 listings, 21 mi - [Citrus Heights](https://ctcfinder.com/testers/sacramento-county/citrus-heights/) — 7 listings, 21 mi - [Placerville](https://ctcfinder.com/testers/el-dorado-county/placerville/) — 3 listings, 23 mi - [North Highlands](https://ctcfinder.com/testers/sacramento-county/north-highlands/) — 5 listings, 25 mi - [Shingle Springs](https://ctcfinder.com/testers/el-dorado-county/shingle-springs/) — 3 listings, 26 mi - [Mcclellan](https://ctcfinder.com/testers/sacramento-county/mcclellan/) — 4 listings, 26 mi