---
title: "Clifford Cole — Clean Truck Check, Santa Rosa, CA"
description: "Clifford Cole in Santa Rosa, 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/clifford-cole-santa-rosa/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Clifford Cole

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 | Santa Rosa, CA 95403 |
| County | Sonoma County |
| Phone | (707) 888-3057 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Clifford Cole 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 David Bertoli in Santa Rosa, about 4 miles away. [See listing](https://ctcfinder.com/tester/david-bertoli-santa-rosa/).

## Clean Truck Check testers in Sonoma County

Clifford Cole 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 Clifford Cole offer mobile Clean Truck Check testing?

Yes. Clifford Cole 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 Clifford Cole test a 2012 or older diesel truck?

Clifford Cole does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [David Bertoli](https://ctcfinder.com/tester/david-bertoli-santa-rosa/) (about 4 miles). Trucks from 2013 on get an OBD scan instead.

### How much does Clifford Cole charge for a Clean Truck Check?

Clifford Cole has not published prices with us; call (707) 888-3057 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 Clifford Cole a CARB-credentialed tester?

Clifford Cole 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

- **[RKB Leasing LLC](https://ctcfinder.com/tester/rkb-leasing-llc-santa-rosa/)** — 3224 Regional Pkwy, Santa Rosa, CA 95403 — (707) 494-6468 — 1 mi. Services: OBD testing, motorhome testing.
- **[Angelica Onate](https://ctcfinder.com/tester/angelica-onate-santa-rosa/)** — Santa Rosa, CA 95404 — (707) 888-8066 — 4 mi. Services: mobile testing.
- **[Breen](https://ctcfinder.com/tester/breen-santa-rosa/)** — 4122 Wallace Rd, Santa Rosa, CA 95404 — (415) 374-3282 — 4 mi. Services: mobile testing, motorhome testing.
- **[D Bar Diesel Truck Repair Corp](https://ctcfinder.com/tester/d-bar-diesel-truck-repair-corp-santa-rosa/)** — 5535 Idlewood Dr, Santa Rosa, CA 95404 — (707) 292-7934 — 4 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[David Bertoli](https://ctcfinder.com/tester/david-bertoli-santa-rosa/)** — Santa Rosa, CA 95404 — (707) 321-4715 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Hensley's Auto](https://ctcfinder.com/tester/hensleys-auto-santa-rosa/)** — 468 Yolanda Ave #915, Santa Rosa, CA 95404 — (707) 544-1750 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.