---
title: "West Coast emissions — Clean Truck Check, Ladera Ranch, CA"
description: "West Coast emissions in Ladera Ranch, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and…"
url: "https://ctcfinder.com/tester/west-coast-emissions-ladera-ranch/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# West Coast emissions

Clean Truck Check tester in Ladera Ranch, 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 | 51 Juniper Dr, Ladera Ranch, CA 92694 |
| County | Orange County |
| Phone | (657) 229-9349 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks West Coast emissions 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 Chad Harding in San Juan Capistrano, about 4 miles away. [See listing](https://ctcfinder.com/tester/chad-harding-san-juan-capistrano/).

## Clean Truck Check testers in Orange County

West Coast emissions 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.

## 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 West Coast emissions offer mobile Clean Truck Check testing?

Yes. West Coast emissions 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 West Coast emissions test a 2012 or older diesel truck?

West Coast emissions does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Chad Harding](https://ctcfinder.com/tester/chad-harding-san-juan-capistrano/) (about 4 miles). Trucks from 2013 on get an OBD scan instead.

### How much does West Coast emissions charge for a Clean Truck Check?

West Coast emissions has not published prices with us; call (657) 229-9349 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 West Coast emissions a CARB-credentialed tester?

West Coast emissions 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

- **[Chad Harding](https://ctcfinder.com/tester/chad-harding-san-juan-capistrano/)** — San Juan Capistrano, CA 92675 — (949) 212-2352 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Mike’s Mobile Carb Testing](https://ctcfinder.com/tester/mikes-mobile-carb-testing-san-juan-capistrano/)** — 25582 Via del Rey, San Juan Capistrano, CA 92675 — (949) 878-8133 — 4 mi. Services: mobile testing, 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 — 7 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Santa Margarita Catholic HS](https://ctcfinder.com/tester/santa-margarita-catholic-hs-rancho-santa-margarita/)** — Rancho Santa Margarita, CA 92688 — (657) 605-6852 — 7 mi. Services: OBD testing.
- **[Santa Margarita Ford Fleet Center](https://ctcfinder.com/tester/santa-margarita-ford-fleet-center-rancho-santa-margarita/)** — 29922 Avenida de las Bandera, Rancho Santa Margarita, CA 92688 — (949) 322-6550 — 7 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 — 8 mi. Services: mobile testing, OBD testing, motorhome testing.