---
title: "South Bay Mobile Smog — Clean Truck Check, Los Gatos, CA"
description: "South Bay Mobile Smog in Los Gatos, 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/south-bay-mobile-smog-los-gatos/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# South Bay Mobile Smog

Clean Truck Check tester in Los Gatos, CA (Santa Clara 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 | Los Gatos, CA 95030 |
| County | Santa Clara County |
| Phone | (408) 458-7621 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks South Bay Mobile Smog 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 Timothy Nunez in Campbell, about 4 miles away. [See listing](https://ctcfinder.com/tester/timothy-nunez-campbell/).

## Clean Truck Check testers in Santa Clara County

South Bay Mobile Smog is one of 79 testing businesses in Santa Clara County on CARB's public tester list. 67 of them offer mobile testing and 27 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 South Bay Mobile Smog offer mobile Clean Truck Check testing?

Yes. South Bay Mobile Smog 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 South Bay Mobile Smog test a 2012 or older diesel truck?

South Bay Mobile Smog does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Timothy Nunez](https://ctcfinder.com/tester/timothy-nunez-campbell/) (about 4 miles). Trucks from 2013 on get an OBD scan instead.

### How much does South Bay Mobile Smog charge for a Clean Truck Check?

South Bay Mobile Smog has not published prices with us; call (408) 458-7621 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 South Bay Mobile Smog a CARB-credentialed tester?

South Bay Mobile Smog 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

- **[Mike Kazemi](https://ctcfinder.com/tester/mike-kazemi-san-jose/)** — San Jose, CA 95124 — (510) 357-2525 — 4 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Andrew Newland](https://ctcfinder.com/tester/andrew-newland-campbell/)** — Campbell, CA 95008 — (408) 691-1746 — 4 mi. Services: OBD testing, motorhome testing.
- **[Salinas Transport LLC Norcal Mobile](https://ctcfinder.com/tester/salinas-transport-llc-norcal-mobile-campbell/)** — 299 E McGlincy Ln Suite B, Campbell, CA 95008 — (831) 498-6447 — 4 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Timothy Nunez](https://ctcfinder.com/tester/timothy-nunez-campbell/)** — Campbell, CA 95008 — (408) 767-8971 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[A.J.’s Mobile Truck Service](https://ctcfinder.com/tester/a-j-s-mobile-truck-service-los-gatos/)** — 123 Bacigalupi Dr, Los Gatos, CA 95032 — (408) 482-7358 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Make it Go Consulting & Services](https://ctcfinder.com/tester/make-it-go-consulting-and-services-san-jose/)** — 2251 Lansford Ave, San Jose, CA 95125 — (415) 816-1471 — 7 mi. Services: mobile testing, smoke opacity (non-OBD) testing, motorhome testing.