---
title: "Clean Truck Check Testers in Monterey County, CA (37)"
description: "37 CARB-credentialed Clean Truck Check testers in Monterey County, California, across 9 cities. 33 offer mobile testing. Search by city, see phone numbers and…"
url: "https://ctcfinder.com/testers/monterey-county/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Clean Truck Check testers in Monterey County, California

37 testing businesses in 9 cities; 33 offer mobile testing, 11 do smoke opacity tests, 22 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.

## City pages

- [Salinas](https://ctcfinder.com/testers/monterey-county/salinas/) — 21 listings
- [Gonzales](https://ctcfinder.com/testers/monterey-county/gonzales/) — 3 listings
- [King City](https://ctcfinder.com/testers/monterey-county/king-city/) — 3 listings
- [Monterey](https://ctcfinder.com/testers/monterey-county/monterey/) — 3 listings
- [Soledad](https://ctcfinder.com/testers/monterey-county/soledad/) — 3 listings

## Greenfield

- **[JM Diesel Solutions](https://ctcfinder.com/tester/jm-diesel-solutions-greenfield/)** — 792 Cherry Ave, Greenfield, CA 93927 — (831) 585-8927. Services: mobile testing, OBD testing, motorhome testing.

## Moss Landing

- **[The Company](https://ctcfinder.com/tester/the-company-moss-landing/)** — 1450 Salinas Rd, Moss Landing, CA 95039 — (831) 682-6876. Services: mobile testing, OBD testing.

## Pacific Grove

- **[Industrial power systems LLC](https://ctcfinder.com/tester/industrial-power-systems-llc-pacific-grove/)** — 608 2nd St, Pacific Grove, CA 93950 — (831) 500-4559. Services: mobile testing, OBD testing, motorhome testing.

## Prunedale

- **[Rigos Automotive LLC](https://ctcfinder.com/tester/rigos-automotive-llc-prunedale/)** — 10041 Reese Circle Suite C, Prunedale, CA 93907 — (831) 595-4828. Services: mobile testing, OBD testing, motorhome testing.

## Trucking in Monterey

Monterey County's Salinas Valley produce industry relies on agricultural and refrigerated trucks.

## Frequently asked questions

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

CTC Finder lists 37 testing businesses in Monterey County from CARB's public tester list (37 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 Monterey County?

Yes. 33 listed businesses in Monterey 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 Monterey 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/).