---
title: "North Coast Mowers — Clean Truck Check, Hopland, CA"
description: "North Coast Mowers in Hopland, 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/north-coast-mowers-hopland/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# North Coast Mowers

Clean Truck Check tester in Hopland, CA (Mendocino 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 | 12350 Hewlitt Rd., Hopland, CA 95449 |
| County | Mendocino County |
| Phone | (707) 391-7804 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks North Coast Mowers 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 RK Land Management in Lakeport, about 12 miles away. [See listing](https://ctcfinder.com/tester/rk-land-management-lakeport/).

## Clean Truck Check testers in Mendocino County

North Coast Mowers is one of 8 testing businesses in Mendocino County on CARB's public tester list. 8 of them offer mobile testing and 4 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 North Coast Mowers offer mobile Clean Truck Check testing?

Yes. North Coast Mowers 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 North Coast Mowers test a 2012 or older diesel truck?

North Coast Mowers does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [RK Land Management](https://ctcfinder.com/tester/rk-land-management-lakeport/) (about 12 miles). Trucks from 2013 on get an OBD scan instead.

### How much does North Coast Mowers charge for a Clean Truck Check?

North Coast Mowers has not published prices with us; call (707) 391-7804 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 North Coast Mowers a CARB-credentialed tester?

North Coast Mowers 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

- **[Triple F Industries LLC](https://ctcfinder.com/tester/triple-f-industries-llc-hopland/)** — 8500 Highway 175, Hopland, CA 95449 — (707) 331-3039 — 1 mi. Services: mobile testing, OBD testing.
- **[RK Land Management](https://ctcfinder.com/tester/rk-land-management-lakeport/)** — 2305 Big Valley Rd, Lakeport, CA 95453 — (707) 245-1737 — 12 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Independent Bookkeeper](https://ctcfinder.com/tester/independent-bookkeeper-ukiah/)** — Ukiah, CA 95482 — (707) 367-2699 — 16 mi. Services: mobile testing, OBD testing.
- **[Peterson Cat](https://ctcfinder.com/tester/peterson-cat-ukiah/)** — Ukiah, CA 95482 — (707) 367-8242 — 16 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Elite Emissions and Repair](https://ctcfinder.com/tester/elite-emissions-and-repair-kelseyville/)** — 3560 Big Valley Rd, Kelseyville, CA 95451 — (707) 533-6371 — 18 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Performance Pemf](https://ctcfinder.com/tester/performance-pemf-cazadero/)** — 1100 Old Duncans Grade Rd, Cazadero, CA 95421 — (707) 480-1646 — 25 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.