---
title: "Clean Truck Check Testers in Quincy, CA (3 listed)"
description: "Find 3 CARB-credentialed Clean Truck Check testers in Quincy, Plumas County: 2 offer mobile testing, 1 do smoke opacity tests. Phone numbers, services and…"
url: "https://ctcfinder.com/testers/plumas-county/quincy/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Clean Truck Check testers in Quincy, CA

3 testing businesses in Quincy (Plumas County) are on CARB's public Clean Truck Check tester list (3 credentialed testers). 2 offer mobile testing, 1 do smoke opacity tests, 2 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 Quincy

- **[Franks Garage LLC](https://ctcfinder.com/tester/franks-garage-llc-quincy/)** — 270 Crescent St, Quincy, CA 95971 — (530) 283-9293. Services: OBD testing, motorhome testing.
- **[Plumas Auto Diagnostics](https://ctcfinder.com/tester/plumas-auto-diagnostics-quincy/)** — 2140 E Main St, Quincy, CA 95971 — (530) 283-2868. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[R&K Mobile Services LLC (Ryan)](https://ctcfinder.com/tester/r-and-k-mobile-services-llc-ryan-quincy/)** — 216 Claremont Dr, Quincy, CA 95971 — (530) 927-7651. Services: mobile testing, OBD testing.



## 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 Quincy?

CTC Finder lists 3 testing businesses in Quincy from CARB's public tester list (3 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 Quincy?

Yes. 2 listed businesses in Quincy 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 Quincy?

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