--- title: "Clean Truck Check Testers in Ceres, CA (7 listed)" description: "Find 7 CARB-credentialed Clean Truck Check testers in Ceres, Stanislaus County: 6 offer mobile testing, 2 do smoke opacity tests. Phone numbers, services and…" url: "https://ctcfinder.com/testers/stanislaus-county/ceres/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Ceres, CA 7 testing businesses in Ceres (Stanislaus County) are on CARB's public Clean Truck Check tester list (7 credentialed testers). 6 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 Ceres - **[Ace smog](https://ctcfinder.com/tester/ace-smog-ceres/)** — 2500 Mary Ave, Ceres, CA 95307 — (209) 531-6823. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[All Star Auto Smog](https://ctcfinder.com/tester/all-star-auto-smog-ceres/)** — 1561 E Whitmore Ave, Ceres, CA 95307 — (209) 568-7833. Services: mobile testing, OBD testing, motorhome testing. - **[Guriqbal Chahal](https://ctcfinder.com/tester/guriqbal-chahal-ceres/)** — Ceres, CA 95307 — (209) 222-0705. Services: mobile testing, OBD testing. - **[ProMobile Fleet](https://ctcfinder.com/tester/promobile-fleet-ceres/)** — 991 Premier Dr, Ceres, CA 95307 — (209) 769-7925. Services: mobile testing, OBD testing. - **[Rangi Registration](https://ctcfinder.com/tester/rangi-registration-ceres/)** — 2904 4th St, Ceres, CA 95307 — (209) 480-6516. Services: OBD testing. - **[Solis Clean Truck Checks](https://ctcfinder.com/tester/solis-clean-truck-checks-ceres/)** — 4467 Faith Home Rd, Ceres, CA 95307 — (209) 996-3687. Services: mobile testing, OBD testing. - **[Stop Truck Permits](https://ctcfinder.com/tester/stop-truck-permits-ceres/)** — 1320 Tomba Dr, Ceres, CA 95307 — (209) 733-3030. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## More testers within 20 miles - **[Diesel Pollution Solutions](https://ctcfinder.com/tester/diesel-pollution-solutions-keyes/)** — 4928 Audra Ct, Keyes, CA 95328 — (760) 525-9435 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[A&B Truck Repair, Inc.](https://ctcfinder.com/tester/a-and-b-truck-repair-inc-modesto-2/)** — 959 S 9th St, Modesto, CA 95351 — (209) 527-6971 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[J And L Complete Automotive Repair Inc.](https://ctcfinder.com/tester/j-and-l-complete-automotive-repair-inc-modesto/)** — 711 Kansas Avenue Ext, Modesto, CA 95351 — (209) 480-0010 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Linarez Transportatoin LLC](https://ctcfinder.com/tester/linarez-transportatoin-llc-modesto/)** — 1632 Woodworth Ave, Modesto, CA 95351 — (209) 416-9298 — 5 mi. Services: OBD testing. - **[Sousa’s Towing LLC](https://ctcfinder.com/tester/sousas-towing-llc-modesto/)** — 1743 Toto Ct, Modesto, CA 95351 — (209) 566-4696 — 5 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Nathan Simpson](https://ctcfinder.com/tester/nathan-simpson-modesto/)** — Modesto, CA 95354 — (209) 678-8549 — 6 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing. - **[S S DPF Filter Cleaning](https://ctcfinder.com/tester/s-s-dpf-filter-cleaning-modesto/)** — 220 Beard Ave, Modesto, CA 95354 — (209) 649-4581 — 6 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[S&S dpf filter cleaning](https://ctcfinder.com/tester/s-and-s-dpf-filter-cleaning-modesto/)** — 220 Beard Ave, Modesto, CA 95354 — (209) 622-6134 — 6 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Walkers Automotive](https://ctcfinder.com/tester/walkers-automotive-modesto/)** — 407 14th St, Modesto, CA 95354 — (209) 527-5577 — 6 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Mobile Truck Check Services](https://ctcfinder.com/tester/mobile-truck-check-services-turlock/)** — 2760 Dels Ln, Turlock, CA 95382 — (209) 485-8320 — 6 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Mobile Vehicle Inspections](https://ctcfinder.com/tester/mobile-vehicle-inspections-turlock/)** — 3116 Silver Oak Ct, Turlock, CA 95382 — (209) 678-7500 — 6 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[No limit hauling & demolition](https://ctcfinder.com/tester/no-limit-hauling-and-demolition-turlock/)** — 2801 Andre Ln, Turlock, CA 95382 — (209) 818-8979 — 6 mi. Services: mobile testing, OBD testing. ## Trucking in Ceres Stanislaus County (Modesto, Turlock, Ceres) has many food-processing and agricultural fleets on SR-99. ## 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 Ceres? CTC Finder lists 7 testing businesses in Ceres 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 Ceres? Yes. 6 listed businesses in Ceres 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 Ceres? 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 - [Turlock](https://ctcfinder.com/testers/stanislaus-county/turlock/) — 7 listings, 6 mi - [Modesto](https://ctcfinder.com/testers/stanislaus-county/modesto/) — 23 listings, 8 mi - [Denair](https://ctcfinder.com/testers/stanislaus-county/denair/) — 4 listings, 16 mi - [Ripon](https://ctcfinder.com/testers/san-joaquin-county/ripon/) — 3 listings, 17 mi - [Livingston](https://ctcfinder.com/testers/merced-county/livingston/) — 3 listings, 18 mi - [Escalon](https://ctcfinder.com/testers/san-joaquin-county/escalon/) — 10 listings, 18 mi - [Oakdale](https://ctcfinder.com/testers/stanislaus-county/oakdale/) — 5 listings, 19 mi - [Manteca](https://ctcfinder.com/testers/san-joaquin-county/manteca/) — 19 listings, 22 mi - [Atwater](https://ctcfinder.com/testers/merced-county/atwater/) — 5 listings, 24 mi - [Lathrop](https://ctcfinder.com/testers/san-joaquin-county/lathrop/) — 5 listings, 27 mi