--- title: "Clean Truck Check Testers in El Monte, CA (11 listed)" description: "Find 11 CARB-credentialed Clean Truck Check testers in El Monte, Los Angeles County: 7 offer mobile testing, 4 do smoke opacity tests. Phone numbers, services…" url: "https://ctcfinder.com/testers/los-angeles-county/el-monte/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in El Monte, CA 11 testing businesses in El Monte (Los Angeles County) are on CARB's public Clean Truck Check tester list (11 credentialed testers). 7 offer mobile testing, 4 do smoke opacity tests, 9 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 El Monte - **[Alex Yu](https://ctcfinder.com/tester/alex-yu-el-monte/)** — El Monte, CA 91732 — (562) 307-4661. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Arturo Basurto](https://ctcfinder.com/tester/arturo-basurto-el-monte/)** — El Monte, CA 91732 — (626) 274-1065. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Byron Marroquin](https://ctcfinder.com/tester/byron-marroquin-el-monte/)** — El Monte, CA 91731 — (626) 378-0342. Services: mobile testing, OBD testing, motorhome testing. - **[Ctrd Mobil Service](https://ctcfinder.com/tester/ctrd-mobil-service-el-monte/)** — 4116 Instar Pl, El Monte, CA 91732 — (626) 890-8553. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Dale Commercial Vehicle Repair](https://ctcfinder.com/tester/dale-commercial-vehicle-repair-el-monte/)** — 2422 Durfee Ave, El Monte, CA 91732 — (626) 990-9666. Services: OBD testing. - **[Jason Diesel Quick Test](https://ctcfinder.com/tester/jason-diesel-quick-test-el-monte/)** — El Monte, CA 91731 — (626) 780-9519. Services: mobile testing, OBD testing, motorhome testing. - **[Kevs Discount Smog Center](https://ctcfinder.com/tester/kevs-discount-smog-center-el-monte/)** — 3825 North Peck Road, El Monte, CA 91732 — (626) 826-5542. Services: mobile testing, OBD testing, motorhome testing. - **[Manzur Test Only](https://ctcfinder.com/tester/manzur-test-only-el-monte/)** — 11240 Lower Azusa Rd, El Monte, CA 91731 — (626) 450-5129. Services: OBD testing, motorhome testing. - **[Sam Smog](https://ctcfinder.com/tester/sam-smog-el-monte/)** — 11027 lower azusa rd d, El Monte, CA 91731 — (626) 377-6252. Services: mobile testing, OBD testing, motorhome testing. - **[SpeedTrucking Inc](https://ctcfinder.com/tester/speedtrucking-inc-el-monte/)** — 3641 Rockwell Avenue, El Monte, CA 91731 — (626) 852-3356. Services: OBD testing, smoke opacity (non-OBD) testing. - **[SRS Automotive](https://ctcfinder.com/tester/srs-automotive-el-monte/)** — 2100 Peck Rd, El Monte, CA 91733 — (626) 625-2553. Services: OBD testing, motorhome testing. ## More testers within 20 miles - **[Johnathan Situ](https://ctcfinder.com/tester/johnathan-situ-south-el-monte/)** — South El Monte, CA 91733 — (626) 489-6009 — 2 mi. Services: mobile testing, OBD testing. - **[Robert's Roadservices LLC](https://ctcfinder.com/tester/roberts-roadservices-llc-south-el-monte/)** — 11018 Haymond Street, South El Monte, CA 91733 — (562) 296-7883 — 2 mi. Services: mobile testing, OBD testing, motorhome testing. - **[The Smog Spot](https://ctcfinder.com/tester/the-smog-spot-south-el-monte/)** — 9614 Garvey Ave #C, South El Monte, CA 91733 — (626) 726-5442 — 2 mi. Services: mobile testing, OBD testing. - **[Ivan LU](https://ctcfinder.com/tester/ivan-lu-rosemead/)** — Rosemead, CA 91770 — (626) 476-1199 — 3 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Milton](https://ctcfinder.com/tester/milton-la-puente/)** — 288 Collwood Ave, La Puente, CA 91746 — (213) 705-4522 — 3 mi. Services: not listed. - **[Paul brow](https://ctcfinder.com/tester/paul-brow-san-gabriel/)** — San Gabriel, CA 91776 — (626) 840-7678 — 4 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Brothers Truck N Trailer Repair Inc](https://ctcfinder.com/tester/brothers-truck-n-trailer-repair-inc-baldwin-park/)** — 14846 Arrow Hwy, Baldwin Park, CA 91706 — (626) 560-0890 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Fernando Mendez](https://ctcfinder.com/tester/fernando-mendez-baldwin-park/)** — Baldwin Park, CA 91706 — (626) 421-2929 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Jesus Estrada](https://ctcfinder.com/tester/jesus-estrada-baldwin-park/)** — Baldwin Park, CA 91706 — (562) 239-5409 — 4 mi. Services: not listed. - **[Premier Mobile Diesel Smog](https://ctcfinder.com/tester/premier-mobile-diesel-smog-baldwin-park/)** — 5035 Heintz St, Baldwin Park, CA 91706 — (909) 343-7028 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Arcadia Smog Test Only Center](https://ctcfinder.com/tester/arcadia-smog-test-only-center-arcadia/)** — 401 N 1st Ave, Arcadia, CA 91006 — (626) 447-1101 — 4 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Holloway Robert](https://ctcfinder.com/tester/holloway-robert-arcadia/)** — Arcadia, CA 91006 — (818) 805-7072 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Trucking in El Monte 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 El Monte? CTC Finder lists 11 testing businesses in El Monte from CARB's public tester list (11 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 El Monte? Yes. 7 listed businesses in El Monte 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 El Monte? 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 - [South El Monte](https://ctcfinder.com/testers/los-angeles-county/south-el-monte/) — 3 listings, 2 mi - [Baldwin Park](https://ctcfinder.com/testers/los-angeles-county/baldwin-park/) — 4 listings, 4 mi - [La Puente](https://ctcfinder.com/testers/los-angeles-county/la-puente/) — 6 listings, 6 mi - [Montebello](https://ctcfinder.com/testers/los-angeles-county/montebello/) — 8 listings, 6 mi - [Hacienda Heights](https://ctcfinder.com/testers/los-angeles-county/hacienda-heights/) — 4 listings, 6 mi - [Alhambra](https://ctcfinder.com/testers/los-angeles-county/alhambra/) — 5 listings, 6 mi - [Monterey Park](https://ctcfinder.com/testers/los-angeles-county/monterey-park/) — 3 listings, 7 mi - [Pico Rivera](https://ctcfinder.com/testers/los-angeles-county/pico-rivera/) — 6 listings, 7 mi - [West Covina](https://ctcfinder.com/testers/los-angeles-county/west-covina/) — 5 listings, 7 mi - [Whittier](https://ctcfinder.com/testers/los-angeles-county/whittier/) — 10 listings, 8 mi