---
title: "Clean Truck Check Testers in Los Angeles, CA (69 listed)"
description: "Find 69 CARB-credentialed Clean Truck Check testers in Los Angeles, Los Angeles County: 60 offer mobile testing, 23 do smoke opacity tests. Phone numbers…"
url: "https://ctcfinder.com/testers/los-angeles-county/los-angeles/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Clean Truck Check testers in Los Angeles, CA

69 testing businesses in Los Angeles (Los Angeles County) are on CARB's public Clean Truck Check tester list (70 credentialed testers). 60 offer mobile testing, 23 do smoke opacity tests, 43 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 Los Angeles

- **[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. Services: mobile testing, OBD testing, motorhome testing.
- **[Absolute Inspections](https://ctcfinder.com/tester/absolute-inspections-los-angeles/)** — 8003 Lou Dillon Avenue, Los Angeles, CA 90001 — (323) 781-8271. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[AD Smog Check](https://ctcfinder.com/tester/ad-smog-check-los-angeles/)** — 3900 North Figueroa Street, Los Angeles, CA 90065 — (323) 337-5135. Services: mobile testing, OBD testing, motorhome testing.
- **[Alex Clean Truck Check](https://ctcfinder.com/tester/alex-clean-truck-check-los-angeles/)** — 10795 Woodbine St, Los Angeles, CA 90034 — (310) 502-6505. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[AM Smog](https://ctcfinder.com/tester/am-smog-los-angeles/)** — 3223 Venice Blvd, Los Angeles, CA 90019 — (310) 695-0673. Services: mobile testing, OBD testing.
- **[Aniceto Cutz](https://ctcfinder.com/tester/aniceto-cutz-los-angeles/)** — Los Angeles, CA 90028 — (323) 490-8851. Services: mobile testing, OBD testing.
- **[Arceo Transport LLC](https://ctcfinder.com/tester/arceo-transport-llc-los-angeles/)** — 303 North Marianna Avenue, Los Angeles, CA 90063 — (213) 453-4932. Services: smoke opacity (non-OBD) testing.
- **[Arsen Kobra Masihi](https://ctcfinder.com/tester/arsen-kobra-masihi-los-angeles/)** — Los Angeles, CA 90038 — (818) 434-3429. Services: mobile testing, OBD testing, motorhome testing.
- **[Besty Smith](https://ctcfinder.com/tester/besty-smith-los-angeles/)** — Los Angeles, CA 90045 — (424) 999-9900. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[C-los Mobile CARB Check](https://ctcfinder.com/tester/c-los-mobile-carb-check-los-angeles/)** — 620 East Redfield Avenue, Los Angeles, CA 90042 — (552) 774-6755. Services: mobile testing, OBD testing, motorhome testing.
- **[CARB Truck Mobile Testing](https://ctcfinder.com/tester/carb-truck-mobile-testing-los-angeles/)** — 7190 Sunset Blvd, Los Angeles, CA 90046 — (323) 333-1702. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Chris Chappel](https://ctcfinder.com/tester/chris-chappel-los-angeles/)** — Los Angeles, CA 90032 — (619) 405-9758. Services: mobile testing, OBD testing, motorhome testing.
- **[cleantruck.net](https://ctcfinder.com/tester/cleantruck-net-los-angeles/)** — Los Angeles, CA 90021 — (310) 571-7093. Services: mobile testing, OBD testing, motorhome testing.
- **[Credentialed tester in Los Angeles](https://ctcfinder.com/tester/credentialed-tester-in-los-angeles-los-angeles/)** — Los Angeles, CA — (323) 533-1652. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Croffstar Smog](https://ctcfinder.com/tester/croffstar-smog-los-angeles/)** — 7406 South Western Avenue, Los Angeles, CA 90047 — (661) 649-6754. Services: mobile testing, OBD testing, motorhome testing.
- **[CTC Pro](https://ctcfinder.com/tester/ctc-pro-los-angeles/)** — Los Angeles, CA 90017 — (323) 770-8738. Services: mobile testing, OBD testing, motorhome testing.
- **[Curtis McNeal](https://ctcfinder.com/tester/curtis-mcneal-los-angeles/)** — Los Angeles, CA 90064 — (424) 495-8427. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Cz express llc](https://ctcfinder.com/tester/cz-express-llc-los-angeles/)** — 150 West 66Th Street, Los Angeles, CA 90003 — (323) 697-1433. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Dan Ortiz](https://ctcfinder.com/tester/dan-ortiz-los-angeles/)** — Los Angeles, CA 90003 — (323) 789-9917. Services: OBD testing.
- **[David Herrera](https://ctcfinder.com/tester/david-herrera-los-angeles/)** — Los Angeles, CA 90037 — (818) 530-6549. Services: mobile testing, OBD testing.
- **[De Los Angeles Compliance Testing](https://ctcfinder.com/tester/de-los-angeles-compliance-testing-los-angeles/)** — 843 W 104th Pl, Los Angeles, CA 90044 — (323) 449-2222. Services: mobile testing, OBD testing.
- **[Diesel Emissions](https://ctcfinder.com/tester/diesel-emissions-los-angeles/)** — 123 North Hobart Boulevard, Los Angeles, CA 90004 — (323) 362-4898. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Ebrahim Alidadi](https://ctcfinder.com/tester/ebrahim-alidadi-los-angeles/)** — Los Angeles, CA 90038 — (310) 276-1832. Services: mobile testing, OBD testing, motorhome testing.
- **[Eddie’s Auto](https://ctcfinder.com/tester/eddies-auto-los-angeles/)** — 3758 S Harvard Blvd, Los Angeles, CA 90018 — (323) 338-5642. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[EJMG Services](https://ctcfinder.com/tester/ejmg-services-los-angeles/)** — 4260 Hooper Ave, Los Angeles, CA 90011 — (213) 364-3555. Services: mobile testing, OBD 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. Services: mobile testing, OBD testing.
- **[Ez clean truck](https://ctcfinder.com/tester/ez-clean-truck-los-angeles/)** — 12021 Wilshire Blvd Suite 127, Los Angeles, CA 90025 — (310) 466-4767. Services: mobile testing, OBD testing, motorhome testing.
- **[Franco CTC](https://ctcfinder.com/tester/franco-ctc-los-angeles/)** — 4037 Bandini Blvd, Los Angeles, CA 90058 — (562) 686-9339. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Franco transport services llc.](https://ctcfinder.com/tester/franco-transport-services-llc-los-angeles/)** — 703 W 73rd St, Los Angeles, CA 90044 — (323) 501-9909. Services: mobile testing, OBD testing, motorhome testing.
- **[Full Port Diagnostics](https://ctcfinder.com/tester/full-port-diagnostics-los-angeles/)** — 11428 Evers Ave, Los Angeles, CA 90059 — (323) 326-0416. Services: mobile testing, OBD testing, motorhome testing.
- **[Global Testing](https://ctcfinder.com/tester/global-testing-los-angeles/)** — 9041 Cattaraugus Ave, Los Angeles, CA 90034 — (317) 496-9028. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Henry Alvarez](https://ctcfinder.com/tester/henry-alvarez-los-angeles/)** — Los Angeles, CA 90034 — (626) 476-2747. Services: mobile testing, OBD testing, motorhome testing.
- **[Hollywood Smog](https://ctcfinder.com/tester/hollywood-smog-los-angeles/)** — 5700 Hollywood Blvd, Los Angeles, CA 90028 — (310) 483-9348. Services: mobile testing, OBD testing, motorhome testing.
- **[Imperialsmog](https://ctcfinder.com/tester/imperialsmog-los-angeles/)** — 815 E Manchester Ave, Los Angeles, CA 90001 — (818) 747-5229. Services: mobile testing, OBD testing, motorhome testing.
- **[Jairo Santacruz](https://ctcfinder.com/tester/jairo-santacruz-los-angeles/)** — Los Angeles, CA 90001 — (323) 489-9330. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[JC's Mobile Auto Care](https://ctcfinder.com/tester/jcs-mobile-auto-care-los-angeles/)** — 819 South Townsend Avenue, Los Angeles, CA 90023 — (332) 605-5674. Services: mobile testing, OBD testing.
- **[Jeff's Automobile Repair Service](https://ctcfinder.com/tester/jeffs-automobile-repair-service-los-angeles/)** — 5196 Alhambra Ave, Los Angeles, CA 90032 — (626) 278-0787. Services: OBD testing, motorhome testing.
- **[Jepr Clean Truck](https://ctcfinder.com/tester/jepr-clean-truck-los-angeles/)** — 1220 W 65th St, Los Angeles, CA 90044 — (805) 799-5416. Services: mobile testing, OBD testing, motorhome testing.
- **[Jimenez Fleet Solutions](https://ctcfinder.com/tester/jimenez-fleet-solutions-los-angeles/)** — 320 E 116th St, Los Angeles, CA 90061 — (323) 212-5166. Services: mobile testing, OBD testing, motorhome testing.
- **[John Daugherty](https://ctcfinder.com/tester/john-daugherty-los-angeles/)** — Los Angeles, CA 90032 — (626) 756-0196. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Jonathan Aguas](https://ctcfinder.com/tester/jonathan-aguas-los-angeles/)** — Los Angeles, CA 90006 — (323) 742-0853. Services: mobile testing, OBD testing.
- **[Jose Cervantes](https://ctcfinder.com/tester/jose-cervantes-los-angeles/)** — Los Angeles, CA 90063 — (323) 307-1231. Services: mobile testing.
- **[Julian’s Mobile Service](https://ctcfinder.com/tester/julians-mobile-service-los-angeles/)** — 2323 Porter Street, Los Angeles, CA 90021 — (323) 707-4652. Services: OBD testing.
- **[Kwang Eui Yi](https://ctcfinder.com/tester/kwang-eui-yi-los-angeles/)** — Los Angeles, CA 90033 — (323) 780-8808. Services: mobile testing.
- **[L.A.'s Elite Insurance Services](https://ctcfinder.com/tester/l-a-s-elite-insurance-services-los-angeles/)** — 2031 E Cesar E Chavez Ave, Los Angeles, CA 90033 — (323) 481-4652. Services: mobile testing, OBD testing.
- **[LA Smog Center](https://ctcfinder.com/tester/la-smog-center-los-angeles/)** — 3671 S Grand Ave, Los Angeles, CA 90007 — (323) 448-7891. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Lowest Price CTC Check](https://ctcfinder.com/tester/lowest-price-ctc-check-los-angeles/)** — 1219 South Santa Fe Avenue, Los Angeles, CA 90021 — (424) 431-5360. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[M.C.M. Smog Test Only](https://ctcfinder.com/tester/m-c-m-smog-test-only-los-angeles/)** — 9118 S Figueroa St, Los Angeles, CA 90003 — (323) 365-8475. Services: OBD testing.
- **[Marquest](https://ctcfinder.com/tester/marquest-los-angeles/)** — 633 W 41st Pl, Los Angeles, CA 90037 — (702) 787-1142. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Mauri’s CTC](https://ctcfinder.com/tester/mauris-ctc-los-angeles/)** — Los Angeles, CA 90026 — (661) 644-5126. Services: mobile testing, OBD testing, motorhome testing.
- **[Mobile Smoke Tester](https://ctcfinder.com/tester/mobile-smoke-tester-los-angeles/)** — 3957 W 7th St 22, Los Angeles, CA 90005 — (310) 617-7296. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Montos Solutions Inc](https://ctcfinder.com/tester/montos-solutions-inc-los-angeles/)** — 3434 W 67th St, Los Angeles, CA 90043 — (323) 394-5735. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Oscar Diaz](https://ctcfinder.com/tester/oscar-diaz-los-angeles/)** — Los Angeles, CA 90002 — (330) 409-9181. Services: OBD testing.
- **[Pablo Orue](https://ctcfinder.com/tester/pablo-orue-los-angeles/)** — Los Angeles, CA 90026 — (323) 274-8870. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[PCMServices, Inc](https://ctcfinder.com/tester/pcmservices-inc-los-angeles/)** — 2010 W Slauson Ave, Los Angeles, CA 90047 — (714) 743-7000. Services: mobile testing, OBD testing, motorhome testing.
- **[Roadmasters](https://ctcfinder.com/tester/roadmasters-los-angeles/)** — 1874 E 43rd St, Los Angeles, CA 90058 — (626) 755-9810. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Sergio Melendez](https://ctcfinder.com/tester/sergio-melendez-los-angeles/)** — Los Angeles, CA 90063 — (323) 394-4145. Services: mobile testing, OBD testing, motorhome testing.
- **[Simply CTC SoCal LLC](https://ctcfinder.com/tester/simply-ctc-socal-llc-los-angeles/)** — 302 E 112th St, Los Angeles, CA 90061 — (323) 397-3480. Services: mobile testing, OBD testing.
- **[Smv's Moblie Worxz LLC](https://ctcfinder.com/tester/smvs-moblie-worxz-llc-los-angeles/)** — 1238 S Townsend Ave, Los Angeles, CA 90023 — (323) 695-5124. Services: mobile testing, OBD testing.
- **[SoCal Smog Testing](https://ctcfinder.com/tester/socal-smog-testing-los-angeles/)** — 5602 S Central Ave, Los Angeles, CA 90011 — (310) 720-6683. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[SongUKim](https://ctcfinder.com/tester/songukim-los-angeles/)** — 6401 South Western Avenue, Los Angeles, CA 90047 — (323) 731-9000. Services: OBD testing, motorhome testing.
- **[South Bay Auto Center](https://ctcfinder.com/tester/south-bay-auto-center-los-angeles/)** — 13112 Athens Way, Los Angeles, CA 90061 — (310) 995-7793. Services: mobile testing, OBD testing, motorhome testing.
- **[State Smog Two](https://ctcfinder.com/tester/state-smog-two-los-angeles/)** — 12630 Washington Pl, Los Angeles, CA 90066 — (310) 857-8581. Services: OBD testing.
- **[U & A Auto Registration Services LLC](https://ctcfinder.com/tester/u-and-a-auto-registration-services-llc-los-angeles/)** — 648 E Florence Ave, Los Angeles, CA 90001 — (323) 746-8211. Services: mobile testing, OBD testing.
- **[Usc Smog](https://ctcfinder.com/tester/usc-smog-los-angeles/)** — 3000 S Figueroa St, Los Angeles, CA 90007 — (213) 605-1955. Services: not listed.
- **[Walker Mobile CTC](https://ctcfinder.com/tester/walker-mobile-ctc-los-angeles/)** — Los Angeles, CA 90011 — (323) 374-3041. Services: mobile testing, OBD testing.
- **[Walts Truck Repair](https://ctcfinder.com/tester/walts-truck-repair-los-angeles/)** — 2119 East 25Th Street, Los Angeles, CA 90058 — (323) 328-2241. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Wilmer](https://ctcfinder.com/tester/wilmer-los-angeles/)** — 1346 88th st, Los Angeles, CA 90044 — (323) 901-3443. Services: mobile testing, OBD testing.
- **[Yanes Mobile Services and Repairs](https://ctcfinder.com/tester/yanes-mobile-services-and-repairs-los-angeles/)** — 306 E 50th St, Los Angeles, CA 90011 — (626) 428-1863. Services: mobile testing, OBD testing.

## More testers within 20 miles

- **[Eman Computers](https://ctcfinder.com/tester/eman-computers-vernon/)** — Vernon, CA 90058 — (323) 556-4524 — 4 mi. Services: mobile testing, OBD testing.
- **[Matthew Caudillo](https://ctcfinder.com/tester/matthew-caudillo-vernon/)** — Vernon, CA 90058 — (562) 965-5838 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Abraham Garcia](https://ctcfinder.com/tester/abraham-garcia-huntington-park/)** — Huntington Park, CA 90255 — (323) 428-1585 — 4 mi. Services: mobile testing, OBD testing.
- **[All Modal Transportation](https://ctcfinder.com/tester/all-modal-transportation-huntington-park/)** — Huntington Park, CA 90255 — (323) 970-5844 — 4 mi. Services: OBD testing.
- **[Chris carb check](https://ctcfinder.com/tester/chris-carb-check-huntington-park/)** — 6613 Stafford Ave, Huntington Park, CA 90255 — (323) 253-3265 — 4 mi. Services: mobile testing, OBD testing.
- **[DA Auto Group LLC](https://ctcfinder.com/tester/da-auto-group-llc-huntington-park/)** — 2480 East Slauson Avenue, Huntington Park, CA 90255 — (818) 640-9228 — 4 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[David Pan](https://ctcfinder.com/tester/david-pan-huntington-park/)** — Huntington Park, CA 90255 — (626) 786-6061 — 4 mi. Services: mobile testing, OBD testing.
- **[HP Smoke check](https://ctcfinder.com/tester/hp-smoke-check-huntington-park/)** — 3248 East Florence Avenue, Huntington Park, CA 90255 — (714) 397-8025 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Jl&S Truckinc Service INC](https://ctcfinder.com/tester/jl-and-s-truckinc-service-inc-huntington-park/)** — 2012 Laura Ave, Huntington Park, CA 90255 — (323) 928-8929 — 4 mi. Services: OBD testing.
- **[Lowest Price in LA CTC](https://ctcfinder.com/tester/lowest-price-in-la-ctc-huntington-park/)** — 6911 South Alameda Street, Huntington Park, CA 90255 — (310) 980-4173 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Mav transportation](https://ctcfinder.com/tester/mav-transportation-huntington-park/)** — Huntington Park, CA 90255 — (323) 217-5384 — 4 mi. Services: mobile testing, OBD testing.
- **[S and J Mobile](https://ctcfinder.com/tester/s-and-j-mobile-huntington-park/)** — 7027 Albany St, Huntington Park, CA 90255 — (323) 972-2039 — 4 mi. Services: mobile testing, OBD testing.

## Trucking in Los Angeles

Los Angeles testers serve everything from port drayage near Wilmington and San Pedro to the industrial districts of South LA and the San Fernando Valley. Truck traffic to the Ports of Los Angeles and Long Beach is heavy, and port and railyard facilities must verify Clean Truck Check compliance at entry or log non-compliant trucks (CARB).

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 Los Angeles?

CTC Finder lists 69 testing businesses in Los Angeles from CARB's public tester list (70 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 Los Angeles?

Yes. 60 listed businesses in Los Angeles 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 Los Angeles?

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

- [Huntington Park](https://ctcfinder.com/testers/los-angeles-county/huntington-park/) — 10 listings, 4 mi
- [Inglewood](https://ctcfinder.com/testers/los-angeles-county/inglewood/) — 4 listings, 6 mi
- [Bell Gardens](https://ctcfinder.com/testers/los-angeles-county/bell-gardens/) — 5 listings, 7 mi
- [South Gate](https://ctcfinder.com/testers/los-angeles-county/south-gate/) — 13 listings, 7 mi
- [Commerce](https://ctcfinder.com/testers/los-angeles-county/commerce/) — 7 listings, 7 mi
- [Lynwood](https://ctcfinder.com/testers/los-angeles-county/lynwood/) — 6 listings, 8 mi
- [Monterey Park](https://ctcfinder.com/testers/los-angeles-county/monterey-park/) — 3 listings, 8 mi
- [Hawthorne](https://ctcfinder.com/testers/los-angeles-county/hawthorne/) — 5 listings, 8 mi
- [Alhambra](https://ctcfinder.com/testers/los-angeles-county/alhambra/) — 5 listings, 9 mi
- [Gardena](https://ctcfinder.com/testers/los-angeles-county/gardena/) — 7 listings, 9 mi