---
title: "MAS Global, Inc — Clean Truck Check, San Bruno, CA"
description: "MAS Global, Inc in San Bruno, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/mas-global-inc-san-bruno/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# MAS Global, Inc

Clean Truck Check tester in San Bruno, 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 | 1141 San Mateo Ave, San Bruno, CA 94066 |
| County | San Mateo County |
| Phone | (650) 278-8905 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks MAS Global, 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 | Not listed |
| California-registered motorhome | Same test as above by engine year, once a year | Not listed |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Ernesto Gutierrez in San Bruno, about 1 mile away. [See listing](https://ctcfinder.com/tester/ernesto-gutierrez-san-bruno/).

## Clean Truck Check testers in San Mateo County

MAS Global, 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 San Bruno 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 MAS Global, Inc offer mobile Clean Truck Check testing?

Yes. MAS Global, 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 MAS Global, Inc test a 2012 or older diesel truck?

MAS Global, Inc does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Ernesto Gutierrez](https://ctcfinder.com/tester/ernesto-gutierrez-san-bruno/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does MAS Global, Inc charge for a Clean Truck Check?

MAS Global, Inc has not published prices with us; call (650) 278-8905 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 MAS Global, Inc a CARB-credentialed tester?

MAS Global, Inc 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

- **[Ernesto Gutierrez](https://ctcfinder.com/tester/ernesto-gutierrez-san-bruno/)** — San Bruno, CA 94066 — (650) 686-1783 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[JTL Mobile CARB Testing](https://ctcfinder.com/tester/jtl-mobile-carb-testing-san-bruno/)** — 1282 Park Ave, San Bruno, CA 94066 — (415) 272-7467 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Oleksii Tsymbal](https://ctcfinder.com/tester/oleksii-tsymbal-san-bruno/)** — San Bruno, CA 94066 — (408) 480-4155 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Mobile Golden State Emissions Testing South City](https://ctcfinder.com/tester/mobile-golden-state-emissions-testing-south-city-south-san-francisco/)** — 988 El Camino Real, South San Francisco, CA 94080 — (925) 354-4370 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Steve Eftimiou](https://ctcfinder.com/tester/steve-eftimiou-south-san-francisco/)** — South San Francisco, CA 94080 — (415) 716-3119 — 2 mi. Services: OBD testing, smoke opacity (non-OBD) testing.
- **[Steve Skrivanek](https://ctcfinder.com/tester/steve-skrivanek-south-san-francisco/)** — South San Francisco, CA 94080 — (650) 333-0475 — 2 mi. Services: OBD testing, smoke opacity (non-OBD) testing.