---
title: "Mechanic Works — Clean Truck Check, Biggs, CA | CTC Finder"
description: "Mechanic Works in Biggs, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing…"
url: "https://ctcfinder.com/tester/mechanic-works-biggs/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Mechanic Works

Clean Truck Check tester in Biggs, CA (Butte County).

> 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.

| Field | Value |
|---|---|
| Location | 2936 2nd St, Biggs, CA 95917 |
| County | Butte County |
| Phone | (530) 237-4417 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Mechanic Works can test

| Your vehicle | Test required | This tester |
|---|---|---|
| Diesel, model year 2013 or newer | OBD scan | Yes |
| Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Yes |
| Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Yes |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

## Clean Truck Check testers in Butte County

Mechanic Works is one of 24 testing businesses in Butte County on CARB's public tester list. 20 of them offer mobile testing and 8 do smoke opacity tests. In Biggs itself there are 4 listed businesses, 3 of them mobile.

## When your truck is due

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/). You can test up to 90 days before a deadline. Free email reminders: https://ctcfinder.com/reminders/

## Frequently asked questions

### Does Mechanic Works offer mobile Clean Truck Check testing?

Yes. Mechanic Works says on CARB's tester list that it offers mobile testing, so it can come to your yard or job site. Ask about a trip fee when you call.

### Can Mechanic Works test a 2012 or older diesel truck?

Yes. Mechanic Works lists smoke opacity testing, the test CARB requires for diesel trucks of model year 2012 and older (no OBD). See [OBD vs smoke opacity](https://ctcfinder.com/guide/obd-vs-smoke-opacity-test/).

### How much does Mechanic Works charge for a Clean Truck Check?

Mechanic Works has not published prices with us; call (530) 237-4417 for a quote. Published California prices are usually $50–$135 per vehicle for an OBD test and $190–$200 for a smoke opacity test, plus CARB's annual fee ($32.13 in 2026). See the [cost guide](https://ctcfinder.com/guide/cost/).

### Is Mechanic Works a CARB-credentialed tester?

Mechanic Works appears on CARB's public Clean Truck Check tester list, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS.

## Other testers nearby

- **[Harold Greenberg](https://ctcfinder.com/tester/harold-greenberg-biggs/)** — Biggs, CA 95917 — (916) 917-8496 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Registration Regulations and applications](https://ctcfinder.com/tester/registration-regulations-and-applications-biggs/)** — 2542 Highway 99, Biggs, CA 95917 — (530) 570-3229 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Top Quality Diesel Repair](https://ctcfinder.com/tester/top-quality-diesel-repair-biggs/)** — 497 C St, Biggs, CA 95917 — (530) 510-7550 — 1 mi. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Dans Diesel Performance](https://ctcfinder.com/tester/dans-diesel-performance-gridley/)** — 1825 Ringnecked Pheasant Ct, Gridley, CA 95948 — (530) 720-9349 — 7 mi. Services: mobile testing, OBD testing.
- **[Gridley Country Ford](https://ctcfinder.com/tester/gridley-country-ford-gridley/)** — Gridley, CA 95948 — (530) 961-2968 — 7 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Gridley Ford](https://ctcfinder.com/tester/gridley-ford-gridley/)** — Gridley, CA 95948 — (530) 403-3385 — 7 mi. Services: mobile testing, OBD testing, motorhome testing.