---
title: "Smogz4less-ctc — Clean Truck Check, Thousand Oaks, CA"
description: "Smogz4less-ctc in Thousand Oaks, 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/smogz4less-ctc-thousand-oaks/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Smogz4less-ctc

Clean Truck Check tester in Thousand Oaks, CA (Ventura 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 | 3111 E Thousand Oaks Blvd#5A, Thousand Oaks, CA 91362 |
| County | Ventura County |
| Phone | (805) 670-3883 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Smogz4less-ctc 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 Ventura County

Smogz4less-ctc is one of 68 testing businesses in Ventura County on CARB's public tester list. 61 of them offer mobile testing and 21 do smoke opacity tests. In Thousand Oaks itself there are 3 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 Smogz4less-ctc offer mobile Clean Truck Check testing?

Yes. Smogz4less-ctc 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 Smogz4less-ctc test a 2012 or older diesel truck?

Yes. Smogz4less-ctc 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 Smogz4less-ctc charge for a Clean Truck Check?

Smogz4less-ctc has not published prices with us; call (805) 670-3883 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 Smogz4less-ctc a CARB-credentialed tester?

Smogz4less-ctc 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

- **[Michael Gil](https://ctcfinder.com/tester/michael-gil-thousand-oaks/)** — Thousand Oaks, CA 91362 — (424) 373-2726 — 1 mi. Services: mobile testing, OBD testing.
- **[Roys Towing](https://ctcfinder.com/tester/roys-towing-thousand-oaks/)** — 1344 E Thousand Oaks Blvd, Thousand Oaks, CA 91362 — (805) 443-6639 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[A1 Emissions](https://ctcfinder.com/tester/a1-emissions-simi-valley/)** — 1933 3rd St, Simi Valley, CA 93065 — (805) 857-1085 — 6 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Juans Truck Smog](https://ctcfinder.com/tester/juans-truck-smog-simi-valley/)** — 679 E Easy St, Simi Valley, CA 93065 — (442) 322-0055 — 6 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[KC Truck Smog](https://ctcfinder.com/tester/kc-truck-smog-simi-valley/)** — 939 Talbert Ave, Simi Valley, CA 93065 — (805) 404-8842 — 6 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Simi Smog Doc](https://ctcfinder.com/tester/simi-smog-doc-simi-valley/)** — 1382 E Los Angeles Ave Suite C, Simi Valley, CA 93065 — (805) 509-3143 — 6 mi. Services: mobile testing, OBD testing, motorhome testing.