---
title: "Finest Diesel Repair LLC — Clean Truck Check, Highland, CA"
description: "Finest Diesel Repair LLC in Highland, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and…"
url: "https://ctcfinder.com/tester/finest-diesel-repair-llc-highland/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Finest Diesel Repair LLC

Clean Truck Check tester in Highland, CA (San Bernardino 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 | 27196 Hibiscus St, Highland, CA 92346 |
| County | San Bernardino County |
| Phone | (951) 204-8882 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Finest Diesel Repair LLC 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 Bo$$ Ave in Redlands, about 4 miles away. [See listing](https://ctcfinder.com/tester/bo-ave-redlands/).

## Clean Truck Check testers in San Bernardino County

Finest Diesel Repair LLC is one of 277 testing businesses in San Bernardino County on CARB's public tester list. 243 of them offer mobile testing and 98 do smoke opacity tests. In Highland itself there are 5 listed businesses, 5 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 Finest Diesel Repair LLC offer mobile Clean Truck Check testing?

Yes. Finest Diesel Repair LLC 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 Finest Diesel Repair LLC test a 2012 or older diesel truck?

Finest Diesel Repair LLC does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Bo$$ Ave](https://ctcfinder.com/tester/bo-ave-redlands/) (about 4 miles). Trucks from 2013 on get an OBD scan instead.

### How much does Finest Diesel Repair LLC charge for a Clean Truck Check?

Finest Diesel Repair LLC has not published prices with us; call (951) 204-8882 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 Finest Diesel Repair LLC a CARB-credentialed tester?

Finest Diesel Repair LLC 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

- **[Alejandro Moreno](https://ctcfinder.com/tester/alejandro-moreno-highland/)** — Highland, CA 92346 — (323) 382-2562 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[J & H Carb Compliance](https://ctcfinder.com/tester/j-and-h-carb-compliance-highland/)** — Highland, CA 92346 — (909) 436-9732 — 1 mi. Services: mobile testing, OBD testing.
- **[JT Smog Test](https://ctcfinder.com/tester/jt-smog-test-highland/)** — 26784 14th St, Highland, CA 92346 — (760) 504-6824 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[NNG Satpal](https://ctcfinder.com/tester/nng-satpal-highland/)** — Highland, CA 92346 — (908) 674-4000 — 1 mi. Services: mobile testing, OBD testing.
- **[Bo$$ Ave](https://ctcfinder.com/tester/bo-ave-redlands/)** — 1752 E Lugonia Ave Suite 117, Redlands, CA 92374 — (951) 334-9178 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Joe Sepulveda](https://ctcfinder.com/tester/joe-sepulveda-redlands/)** — Redlands, CA 92374 — (909) 489-4679 — 4 mi. Services: mobile testing, OBD testing, motorhome testing.