---
title: "Strong Mobile Diesel LLC — Clean Truck Check, San Diego, CA"
description: "Strong Mobile Diesel LLC in San Diego, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing…"
url: "https://ctcfinder.com/tester/strong-mobile-diesel-llc-san-diego/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Strong Mobile Diesel LLC

Clean Truck Check tester in San Diego, CA (San Diego 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 | 5052 Clairemont Drive, San Diego, CA 92117 |
| County | San Diego County |
| Phone | (858) 753-4373 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Strong Mobile Diesel LLC 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 Diego County

Strong Mobile Diesel LLC is one of 178 testing businesses in San Diego County on CARB's public tester list. 157 of them offer mobile testing and 91 do smoke opacity tests. In San Diego itself there are 42 listed businesses, 30 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 Strong Mobile Diesel LLC offer mobile Clean Truck Check testing?

Yes. Strong Mobile Diesel LLC 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 Strong Mobile Diesel LLC test a 2012 or older diesel truck?

Yes. Strong Mobile Diesel LLC 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 Strong Mobile Diesel LLC charge for a Clean Truck Check?

Strong Mobile Diesel LLC has not published prices with us; call (858) 753-4373 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 Strong Mobile Diesel LLC a CARB-credentialed tester?

Strong Mobile Diesel LLC 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

- **[Basile Construction](https://ctcfinder.com/tester/basile-construction-san-diego/)** — 7952 Armour St, San Diego, CA 92111 — (619) 203-2638 — 2 mi. Services: OBD testing.
- **[Caltrans Shop 11](https://ctcfinder.com/tester/caltrans-shop-11-san-diego/)** — 7179 Opportunity Rd, San Diego, CA 92111 — (619) 843-1127 — 2 mi. Services: not listed.
- **[Diesel Pollution Sol](https://ctcfinder.com/tester/diesel-pollution-sol-san-diego/)** — 5704 Copley Dr, San Diego, CA 92111 — (760) 518-1617 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Diesel Pollution Solutions](https://ctcfinder.com/tester/diesel-pollution-solutions-san-diego/)** — 5704 Copley Drive, San Diego, CA 92111 — (760) 822-7129 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[DPS](https://ctcfinder.com/tester/dps-san-diego/)** — 5704 Copley Dr, San Diego, CA 92111 — (858) 737-8235 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Genesee Auto Care](https://ctcfinder.com/tester/genesee-auto-care-san-diego/)** — 7515 Clairemont Mesa Boulevard, San Diego, CA 92111 — (619) 371-2100 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.