---
title: "Bunyon Bros Tree Service — Clean Truck Check, San Luis Obispo, CA"
description: "Bunyon Bros Tree Service in San Luis Obispo, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD)…"
url: "https://ctcfinder.com/tester/bunyon-bros-tree-service-san-luis-obispo/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Bunyon Bros Tree Service

Clean Truck Check tester in San Luis Obispo, CA (San Luis Obispo 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 | 5345 Davenport Creek Rd, San Luis Obispo, CA 93401 |
| County | San Luis Obispo County |
| Phone | (805) 503-8838 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Bunyon Bros Tree 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 | Yes |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

## Clean Truck Check testers in San Luis Obispo County

Bunyon Bros Tree Service is one of 25 testing businesses in San Luis Obispo County on CARB's public tester list. 22 of them offer mobile testing and 9 do smoke opacity tests. In San Luis Obispo itself there are 4 listed businesses, 4 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 Bunyon Bros Tree Service offer mobile Clean Truck Check testing?

Yes. Bunyon Bros Tree 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 Bunyon Bros Tree Service test a 2012 or older diesel truck?

Yes. Bunyon Bros Tree Service lists smoke opacity testing, the test CARB requires for diesel trucks of model year 2012 and older (no OBD). See [OBD vs smoke opacity](https://ctcfinder.com/guide/obd-vs-smoke-opacity-test/).

### How much does Bunyon Bros Tree Service charge for a Clean Truck Check?

Bunyon Bros Tree Service has not published prices with us; call (805) 503-8838 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 Bunyon Bros Tree Service a CARB-credentialed tester?

Bunyon Bros Tree 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.

## Other testers nearby

- **[Am Pac Repair](https://ctcfinder.com/tester/am-pac-repair-san-luis-obispo/)** — 4149 Santa Fe Rd Suite 8, San Luis Obispo, CA 93401 — (805) 459-4724 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Central Coast Fleet Compliance](https://ctcfinder.com/tester/central-coast-fleet-compliance-san-luis-obispo/)** — 3940 Broad St Ste 7-177, San Luis Obispo, CA 93401 — (805) 222-6869 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[SLO Smog](https://ctcfinder.com/tester/slo-smog-san-luis-obispo/)** — 233 Granada Dr Suite C, San Luis Obispo, CA 93401 — (805) 858-0741 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Miller's 76](https://ctcfinder.com/tester/millers-76-pismo-beach/)** — 542 Five Cities Dr, Pismo Beach, CA 93449 — (805) 773-5727 — 6 mi. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Eduardo Garibay](https://ctcfinder.com/tester/eduardo-garibay-arroyo-grande/)** — Arroyo Grande, CA 93420 — (805) 723-4318 — 9 mi. Services: mobile testing, OBD testing.
- **[Beach Front Auto & Smog](https://ctcfinder.com/tester/beach-front-auto-and-smog-oceano/)** — 1210 Pike Ln, Oceano, CA 93445 — (805) 878-2620 — 13 mi. Services: OBD testing, motorhome testing.