---
title: "Mr.CTC Inspector — Clean Truck Check, Antioch, CA"
description: "Mr.CTC Inspector in Antioch, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome…"
url: "https://ctcfinder.com/tester/mr-ctc-inspector-antioch/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Mr.CTC Inspector

Clean Truck Check tester in Antioch, CA (Contra Costa 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 | 5101 Homestead Ct, Antioch, CA 94531 |
| County | Contra Costa County |
| Phone | (925) 317-4000 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Mr.CTC Inspector 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 Contra Costa County

Mr.CTC Inspector is one of 61 testing businesses in Contra Costa County on CARB's public tester list. 57 of them offer mobile testing and 38 do smoke opacity tests. In Antioch itself there are 11 listed businesses, 10 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 Mr.CTC Inspector offer mobile Clean Truck Check testing?

Yes. Mr.CTC Inspector 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 Mr.CTC Inspector test a 2012 or older diesel truck?

Yes. Mr.CTC Inspector 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 Mr.CTC Inspector charge for a Clean Truck Check?

Mr.CTC Inspector has not published prices with us; call (925) 317-4000 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 Mr.CTC Inspector a CARB-credentialed tester?

Mr.CTC Inspector 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

- **[Junior Mobile Automotive Repair LCC](https://ctcfinder.com/tester/junior-mobile-automotive-repair-lcc-antioch/)** — 4464 Lone Tree Way, Antioch, CA 94531 — (925) 246-5829 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[A1 Stop Smog](https://ctcfinder.com/tester/a1-stop-smog-antioch/)** — 1810 Verne Roberts Cir, Antioch, CA 94509 — (925) 445-7875 — 3 mi. Services: OBD testing, motorhome testing.
- **[Charlotte Larsen](https://ctcfinder.com/tester/charlotte-larsen-antioch/)** — Antioch, CA 94509 — (925) 374-2879 — 3 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Contra Costa Mobile Repair](https://ctcfinder.com/tester/contra-costa-mobile-repair-antioch/)** — 1915 Cavallo Rd, Antioch, CA 94509 — (925) 437-1397 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Drill Tech Drilling Shoring Inc.](https://ctcfinder.com/tester/drill-tech-drilling-shoring-inc-antioch/)** — 2200 Wymore Way, Antioch, CA 94509 — (510) 715-3737 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Habibullah Nazari](https://ctcfinder.com/tester/habibullah-nazari-antioch/)** — Antioch, CA 94509 — (925) 445-7319 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.