---
title: "Mobile Golden State Emissions — Clean Truck Check, Danville, CA"
description: "Mobile Golden State Emissions in Danville, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address…"
url: "https://ctcfinder.com/tester/mobile-golden-state-emissions-danville/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Mobile Golden State Emissions

Clean Truck Check tester in Danville, CA (Contra Costa 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 | 821 Orange Blossom Way, Danville, CA 94526 |
| County | Contra Costa County |
| Phone | (925) 818-1831 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Mobile Golden State Emissions 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 Tri-Valley Clean Truck Check / Cal Water Trucking in Danville, about 1 mile away. [See listing](https://ctcfinder.com/tester/tri-valley-clean-truck-check-cal-water-trucking-danville/).

## Clean Truck Check testers in Contra Costa County

Mobile Golden State Emissions is one of 61 testing businesses in Contra Costa County on CARB's public tester list. 57 of them offer mobile testing and 38 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 Mobile Golden State Emissions offer mobile Clean Truck Check testing?

Yes. Mobile Golden State Emissions 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 Mobile Golden State Emissions test a 2012 or older diesel truck?

Mobile Golden State Emissions does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Tri-Valley Clean Truck Check / Cal Water Trucking](https://ctcfinder.com/tester/tri-valley-clean-truck-check-cal-water-trucking-danville/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Mobile Golden State Emissions charge for a Clean Truck Check?

Mobile Golden State Emissions has not published prices with us; call (925) 818-1831 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 Mobile Golden State Emissions a CARB-credentialed tester?

Mobile Golden State Emissions 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

- **[Tri-Valley Clean Truck Check / Cal Water Trucking](https://ctcfinder.com/tester/tri-valley-clean-truck-check-cal-water-trucking-danville/)** — 35 Surrey Ct, Danville, CA 94526 — (925) 708-3099 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Ryan's Truck Repair](https://ctcfinder.com/tester/ryans-truck-repair-alamo/)** — 2106 Pebble Dr, Alamo, CA 94507 — (650) 222-0970 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Optivia Tech LLC](https://ctcfinder.com/tester/optivia-tech-llc-san-ramon/)** — 1934 Brookcliff Cir, San Ramon, CA 94582 — (415) 727-7227 — 5 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Mikes Mobile Automotive](https://ctcfinder.com/tester/mikes-mobile-automotive-castro-valley/)** — 20706 Tuxedo Ct, Castro Valley, CA 94552 — (510) 502-3925 — 8 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Steven D Phillips](https://ctcfinder.com/tester/steven-d-phillips-castro-valley/)** — Castro Valley, CA 94546 — (510) 435-0859 — 8 mi. Services: mobile testing, OBD testing.
- **[Christina Law](https://ctcfinder.com/tester/christina-law-dublin/)** — Dublin, CA 94568 — (415) 638-1873 — 8 mi. Services: mobile testing, OBD testing.