---
title: "Smile Trucking — Clean Truck Check, Santa Rosa, CA"
description: "Smile Trucking in Santa Rosa, CA is on CARB's Clean Truck Check tester list. Offers OBD testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/smile-trucking-santa-rosa/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Smile Trucking

Clean Truck Check tester in Santa Rosa, CA (Sonoma 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 | 3856 Santa Rosa Ave, Santa Rosa, CA 95407 |
| County | Sonoma County |
| Phone | (707) 867-5028 |
| Mobile testing | No |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Smile Trucking 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 |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Chris Patterson in Santa Rosa, about 1 mile away. [See listing](https://ctcfinder.com/tester/chris-patterson-santa-rosa/).

If you need a tester at your yard, the nearest listed tester that offers mobile testing is Chris Patterson in Santa Rosa, about 1 mile away. [See listing](https://ctcfinder.com/tester/chris-patterson-santa-rosa/).

## Clean Truck Check testers in Sonoma County

Smile Trucking is one of 28 testing businesses in Sonoma County on CARB's public tester list. 19 of them offer mobile testing and 14 do smoke opacity tests. In Santa Rosa itself there are 17 listed businesses, 11 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 Smile Trucking offer mobile Clean Truck Check testing?

Not according to CARB's tester list; plan to bring the truck to the tester. The nearest listed mobile tester is [Chris Patterson](https://ctcfinder.com/tester/chris-patterson-santa-rosa/) (about 1 mile).

### Can Smile Trucking test a 2012 or older diesel truck?

Smile Trucking does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Chris Patterson](https://ctcfinder.com/tester/chris-patterson-santa-rosa/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Smile Trucking charge for a Clean Truck Check?

Smile Trucking has not published prices with us; call (707) 867-5028 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 Smile Trucking a CARB-credentialed tester?

Smile Trucking 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

- **[Chris Patterson](https://ctcfinder.com/tester/chris-patterson-santa-rosa/)** — Santa Rosa, CA 95407 — (707) 292-6644 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Donahue Truck Centers](https://ctcfinder.com/tester/donahue-truck-centers-santa-rosa/)** — 520 E Todd Rd, Santa Rosa, CA 95407 — (707) 975-5080 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Juan Torres](https://ctcfinder.com/tester/juan-torres-santa-rosa/)** — Santa Rosa, CA 95407 — (707) 321-1951 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Karamjit Singh Kaleka](https://ctcfinder.com/tester/karamjit-singh-kaleka-santa-rosa/)** — Santa Rosa, CA 95407 — (510) 565-2401 — 1 mi. Services: not listed.
- **[Lovepreet Singh](https://ctcfinder.com/tester/lovepreet-singh-santa-rosa/)** — Santa Rosa, CA 95407 — (707) 623-0393 — 1 mi. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Morgan Dirt Solutions](https://ctcfinder.com/tester/morgan-dirt-solutions-santa-rosa/)** — 112 Mountain View Ave, Santa Rosa, CA 95407 — (707) 696-1961 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.