---
title: "Quality Smog — Clean Truck Check, Mission Viejo, CA"
description: "Quality Smog in Mission Viejo, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and nearby…"
url: "https://ctcfinder.com/tester/quality-smog-mission-viejo/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Quality Smog

Clean Truck Check tester in Mission Viejo, CA (Orange 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 | 26811 Trabuco Rd, Mission Viejo, CA 92691 |
| County | Orange County |
| Phone | (949) 454-4195 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Quality Smog 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 | Not listed |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Hdquickcheck in Mission Viejo, about 1 mile away. [See listing](https://ctcfinder.com/tester/hdquickcheck-mission-viejo/).

## Clean Truck Check testers in Orange County

Quality Smog is one of 159 testing businesses in Orange County on CARB's public tester list. 146 of them offer mobile testing and 84 do smoke opacity tests. In Mission Viejo 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 Quality Smog offer mobile Clean Truck Check testing?

Yes. Quality Smog 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 Quality Smog test a 2012 or older diesel truck?

Quality Smog does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Hdquickcheck](https://ctcfinder.com/tester/hdquickcheck-mission-viejo/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Quality Smog charge for a Clean Truck Check?

Quality Smog has not published prices with us; call (949) 454-4195 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 Quality Smog a CARB-credentialed tester?

Quality Smog 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

- **[Hdquickcheck](https://ctcfinder.com/tester/hdquickcheck-mission-viejo/)** — Mission Viejo, CA 92691 — (949) 538-8094 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Armin Gederi](https://ctcfinder.com/tester/armin-gederi-mission-viejo/)** — Mission Viejo, CA 92692 — (818) 809-9423 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Acatrucking](https://ctcfinder.com/tester/acatrucking-lake-forest/)** — 22551 Overlake Dr, Lake Forest, CA 92630 — (626) 715-3763 — 3 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Elite Automotive Services](https://ctcfinder.com/tester/elite-automotive-services-lake-forest/)** — 26801 Vista Ter, Lake Forest, CA 92630 — (714) 319-5003 — 3 mi. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Shawn Truong](https://ctcfinder.com/tester/shawn-truong-lake-forest/)** — Lake Forest, CA 92630 — (714) 397-8025 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[BB Mobile CARB Testing](https://ctcfinder.com/tester/bb-mobile-carb-testing-rancho-santa-margarita/)** — 17 Ledgewood Dr, Rancho Santa Margarita, CA 92688 — (949) 523-4550 — 3 mi. Services: mobile testing, OBD testing, motorhome testing.