---
title: "Clean Truck Check Testers in Mendocino County, CA (8)"
description: "8 CARB-credentialed Clean Truck Check testers in Mendocino County, California, across 5 cities. 8 offer mobile testing. Search by city, see phone numbers and…"
url: "https://ctcfinder.com/testers/mendocino-county/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Clean Truck Check testers in Mendocino County, California

8 testing businesses in 5 cities; 8 offer mobile testing, 4 do smoke opacity tests, 6 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.


## Fort Bragg

- **[Fort Bragg Diesel](https://ctcfinder.com/tester/fort-bragg-diesel-fort-bragg/)** — 1230 N Main St, Fort Bragg, CA 95437 — (707) 813-4532. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.

## Hopland

- **[North Coast Mowers](https://ctcfinder.com/tester/north-coast-mowers-hopland/)** — 12350 Hewlitt Rd., Hopland, CA 95449 — (707) 391-7804. Services: mobile testing, OBD testing, motorhome testing.
- **[Triple F Industries LLC](https://ctcfinder.com/tester/triple-f-industries-llc-hopland/)** — 8500 Highway 175, Hopland, CA 95449 — (707) 331-3039. Services: mobile testing, OBD testing.

## Laytonville

- **[Matthew Morrison](https://ctcfinder.com/tester/matthew-morrison-laytonville/)** — Laytonville, CA 95454 — (707) 472-8500. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.

## Ukiah

- **[Independent Bookkeeper](https://ctcfinder.com/tester/independent-bookkeeper-ukiah/)** — Ukiah, CA 95482 — (707) 367-2699. Services: mobile testing, OBD testing.
- **[Peterson Cat](https://ctcfinder.com/tester/peterson-cat-ukiah/)** — Ukiah, CA 95482 — (707) 367-8242. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.

## Willits

- **[Essential Fleet services LLC](https://ctcfinder.com/tester/essential-fleet-services-llc-willits/)** — 1435 Baechtel Rd, Willits, CA 95490 — (919) 760-0709. Services: mobile testing, OBD testing, motorhome testing.
- **[Spackman CTC Mobile Mechanic Services](https://ctcfinder.com/tester/spackman-ctc-mobile-mechanic-services-willits/)** — 27481 Coyote Pl, Willits, CA 95490 — (707) 391-4675. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.


## Frequently asked questions

### How many Clean Truck Check testers are in Mendocino County?

CTC Finder lists 8 testing businesses in Mendocino County from CARB's public tester list (8 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 Mendocino County?

Yes. 8 listed businesses in Mendocino County 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 Mendocino County?

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/).