---
title: "Filthy Busters Inc. — Clean Truck Check, Redwood City, CA"
description: "Filthy Busters Inc. in Redwood City, CA is on CARB's Clean Truck Check tester list with 2 credentialed testers. Offers mobile testing, OBD testing, smoke…"
url: "https://ctcfinder.com/tester/filthy-busters-inc-redwood-city/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Filthy Busters Inc.

Clean Truck Check tester in Redwood City, CA (San Mateo 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 | 1249 Sabrina Ct, Redwood City, CA 94061 |
| County | San Mateo County |
| Phone | (510) 326-5901 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 2 |
| Last verified | 2026-11-01 |

## Which trucks Filthy Busters Inc. 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 Mateo County

Filthy Busters Inc. is one of 31 testing businesses in San Mateo County on CARB's public tester list. 27 of them offer mobile testing and 17 do smoke opacity tests. In Redwood City itself there are 3 listed businesses, 3 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 Filthy Busters Inc. offer mobile Clean Truck Check testing?

Yes. Filthy Busters Inc. 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 Filthy Busters Inc. test a 2012 or older diesel truck?

Yes. Filthy Busters Inc. 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 Filthy Busters Inc. charge for a Clean Truck Check?

Filthy Busters Inc. has not published prices with us; call (510) 326-5901 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 Filthy Busters Inc. a CARB-credentialed tester?

Filthy Busters Inc. appears on CARB's public Clean Truck Check tester list with 2 credentialed testers, 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

- **[Balboni Electric](https://ctcfinder.com/tester/balboni-electric-redwood-city/)** — 823 Cleveland St, Redwood City, CA 94061 — (650) 766-4997 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[TJF Solutions](https://ctcfinder.com/tester/tjf-solutions-menlo-park/)** — 3523 Haven Ave, Menlo Park, CA 94025 — (650) 771-4532 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Carbcheck1](https://ctcfinder.com/tester/carbcheck1-san-carlos/)** — San Carlos, CA 94070 — (650) 430-3981 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Holly Smog](https://ctcfinder.com/tester/holly-smog-san-carlos/)** — 501 Old County Rd Suite A, San Carlos, CA 94070 — (650) 595-1388 — 3 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Peninsula Truck Repair, INC.](https://ctcfinder.com/tester/peninsula-truck-repair-inc-redwood-city/)** — 3018 Spring St, Redwood City, CA 94063 — (831) 419-7042 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Ron Ramies Inc](https://ctcfinder.com/tester/ron-ramies-inc-portola-valley/)** — 115 Portola Rd, Portola Valley, CA 94028 — (650) 400-2116 — 6 mi. Services: mobile testing, OBD testing, motorhome testing.