---
title: "NQR Mobile Service - SF Bay Area & Nor Cal — Clean Truck Check, Concord, CA"
description: "NQR Mobile Service - SF Bay Area & Nor Cal in Concord, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing. Phone, address and…"
url: "https://ctcfinder.com/tester/nqr-mobile-service-sf-bay-area-and-nor-cal-concord/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# NQR Mobile Service - SF Bay Area & Nor Cal

Clean Truck Check tester in Concord, 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 | 2750 Cloverdale Ave SF BAY AREA & NORCAL, Concord, CA 94518 |
| County | Contra Costa County |
| Phone | (925) 276-2215 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks NQR Mobile Service - SF Bay Area & Nor Cal 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 Bayside Mobile Mechanic Service in Concord, about 1 mile away. [See listing](https://ctcfinder.com/tester/bayside-mobile-mechanic-service-concord/).

## Clean Truck Check testers in Contra Costa County

NQR Mobile Service - SF Bay Area & Nor Cal 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. In Concord itself there are 7 listed businesses, 6 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 NQR Mobile Service - SF Bay Area & Nor Cal offer mobile Clean Truck Check testing?

Yes. NQR Mobile Service - SF Bay Area & Nor Cal 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 NQR Mobile Service - SF Bay Area & Nor Cal test a 2012 or older diesel truck?

NQR Mobile Service - SF Bay Area & Nor Cal does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Bayside Mobile Mechanic Service](https://ctcfinder.com/tester/bayside-mobile-mechanic-service-concord/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does NQR Mobile Service - SF Bay Area & Nor Cal charge for a Clean Truck Check?

NQR Mobile Service - SF Bay Area & Nor Cal has not published prices with us; call (925) 276-2215 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 NQR Mobile Service - SF Bay Area & Nor Cal a CARB-credentialed tester?

NQR Mobile Service - SF Bay Area & Nor Cal 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

- **[Bayside Mobile Mechanic Service](https://ctcfinder.com/tester/bayside-mobile-mechanic-service-concord/)** — 3160 Cowell Rd, Concord, CA 94518 — (925) 766-4292 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Karl Grothman](https://ctcfinder.com/tester/karl-grothman-concord/)** — Concord, CA 94521 — (925) 435-9674 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[NorCal Diesel Solutions](https://ctcfinder.com/tester/norcal-diesel-solutions-pleasant-hill/)** — 16 Dudley Ct, Pleasant Hill, CA 94523 — (925) 405-7233 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Autos International](https://ctcfinder.com/tester/autos-international-concord/)** — 2201 Commerce Ave, Concord, CA 94520 — (925) 676-0440 — 3 mi. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[carbdieseltest.com](https://ctcfinder.com/tester/carbdieseltest-com-concord/)** — Concord, CA 94520 — (916) 538-7777 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Fnu Imran Ali](https://ctcfinder.com/tester/fnu-imran-ali-concord/)** — Concord, CA 94520 — (925) 849-2803 — 3 mi. Services: mobile testing, OBD testing, motorhome testing.