---
title: "Laing Mobile Service — Clean Truck Check, Kitchener Cambridge Waterloo Woodstock Guelph, ON"
description: "Laing Mobile Service in Kitchener Cambridge Waterloo Woodstock Guelph, ON is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing…"
url: "https://ctcfinder.com/tester/laing-mobile-service-kitchener-cambridge-waterloo-woodstock-guelph-on/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Laing Mobile Service

Clean Truck Check tester in Kitchener Cambridge Waterloo Woodstock Guelph, ON.

> 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 | 17 Glendale Rd, Kitchener Cambridge Waterloo Woodstock Guelph, ON |
| Phone | (226) 808-7847 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Laing Mobile Service 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 | Not listed |

## Clean Truck Check testers in Ontario

Laing Mobile Service is one of 7 testing businesses in Ontario on CARB's public tester list. 5 of them offer mobile testing and 5 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 Laing Mobile Service offer mobile Clean Truck Check testing?

Yes. Laing Mobile Service 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 Laing Mobile Service test a 2012 or older diesel truck?

Laing Mobile Service does not list smoke opacity testing, which older non-OBD diesel trucks need. Trucks from 2013 on get an OBD scan instead.

### How much does Laing Mobile Service charge for a Clean Truck Check?

Laing Mobile Service has not published prices with us; call (226) 808-7847 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 Laing Mobile Service a CARB-credentialed tester?

Laing Mobile Service 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.