---
title: "Clean Truck Check Testers in Barstow, CA (4 listed)"
description: "Find 4 CARB-credentialed Clean Truck Check testers in Barstow, San Bernardino County: 4 offer mobile testing, 3 do smoke opacity tests. Phone numbers, services…"
url: "https://ctcfinder.com/testers/san-bernardino-county/barstow/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Clean Truck Check testers in Barstow, CA

4 testing businesses in Barstow (San Bernardino County) are on CARB's public Clean Truck Check tester list (5 credentialed testers). 4 offer mobile testing, 3 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 Barstow

- **[In & Out Truck Repair Company](https://ctcfinder.com/tester/in-and-out-truck-repair-company-barstow/)** — 2441 W Main St, Barstow, CA 92311 — (760) 577-9544. Services: mobile testing, OBD testing.
- **[American Towing & Recovery Inc](https://ctcfinder.com/tester/american-towing-and-recovery-inc-barstow/)** — 2520 E Main St, Barstow, CA 92311 — (760) 256-5200. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[TRX Concepts](https://ctcfinder.com/tester/trx-concepts-barstow/)** — Barstow, CA 92311 — (682) 363-0026. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[ZippyLube](https://ctcfinder.com/tester/zippylube-barstow/)** — 2960 Lenwood Rd, Barstow, CA 92311 — (949) 412-5059. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.


## Trucking in Barstow

San Bernardino County covers most of the Inland Empire warehouse belt (Fontana, Ontario, Rialto, San Bernardino) and the High Desert along I-15. The Inland Empire holds roughly a billion square feet of warehouse space (Pitzer College estimate), so local fleets and owner-operators run a high volume of tests. Mobile testers who visit distribution centers and truck yards are common here.

## 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 Barstow?

CTC Finder lists 4 testing businesses in Barstow from CARB's public tester list (5 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 Barstow?

Yes. 4 listed businesses in Barstow 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 Barstow?

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

- [Apple Valley](https://ctcfinder.com/testers/san-bernardino-county/apple-valley/) — 11 listings, 32 mi
- [Adelanto](https://ctcfinder.com/testers/san-bernardino-county/adelanto/) — 3 listings, 37 mi
- [Victorville](https://ctcfinder.com/testers/san-bernardino-county/victorville/) — 9 listings, 37 mi