---
title: "MMM Emissions — Clean Truck Check, Rancho Cucamonga, CA"
description: "MMM Emissions in Rancho Cucamonga, CA is on CARB's Clean Truck Check tester list with 2 credentialed testers. Offers mobile testing, OBD testing, smoke opacity…"
url: "https://ctcfinder.com/tester/mmm-emissions-rancho-cucamonga/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# MMM Emissions

Clean Truck Check tester in Rancho Cucamonga, CA (San Bernardino 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 | 9375 PLACER STREET RANCHO CUCAMUMGA CA 91730, Rancho Cucamonga, CA 91730 |
| County | San Bernardino County |
| Phone | (909) 819-8478 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 2 |
| Last verified | 2026-11-01 |

## Which trucks MMM 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 | Yes |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

## Clean Truck Check testers in San Bernardino County

MMM Emissions is one of 277 testing businesses in San Bernardino County on CARB's public tester list. 243 of them offer mobile testing and 98 do smoke opacity tests. In Rancho Cucamonga itself there are 18 listed businesses, 17 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 MMM Emissions offer mobile Clean Truck Check testing?

Yes. MMM 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 MMM Emissions test a 2012 or older diesel truck?

Yes. MMM Emissions 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 MMM Emissions charge for a Clean Truck Check?

MMM Emissions has not published prices with us; call (909) 819-8478 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 MMM Emissions a CARB-credentialed tester?

MMM Emissions appears on CARB's public Clean Truck Check tester list with 2 credentialed testers, 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

- **[Center Lane Transportation, LLC](https://ctcfinder.com/tester/center-lane-transportation-llc-rancho-cucamonga/)** — Rancho Cucamonga, CA 91730 — (619) 598-6998 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[DSK Trucking Solutions Inc](https://ctcfinder.com/tester/dsk-trucking-solutions-inc-rancho-cucamonga/)** — Rancho Cucamonga, CA 91730 — (909) 755-9618 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Heriberto Eddie Casarez](https://ctcfinder.com/tester/heriberto-eddie-casarez-rancho-cucamonga/)** — Rancho Cucamonga, CA 91730 — (909) 730-5600 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Jayden Russell](https://ctcfinder.com/tester/jayden-russell-rancho-cucamonga/)** — Rancho Cucamonga, CA 91730 — (818) 406-8141 — 1 mi. Services: not listed.
- **[RH Mobile Truck & Trailer Repair](https://ctcfinder.com/tester/rh-mobile-truck-and-trailer-repair-rancho-cucamonga/)** — 9345 Calle Vejar, Rancho Cucamonga, CA 91730 — (951) 285-4546 — 1 mi. Services: mobile testing, OBD testing.
- **[Seven Star Carrier](https://ctcfinder.com/tester/seven-star-carrier-rancho-cucamonga/)** — 9556 Bluewater Pl, Rancho Cucamonga, CA 91730 — (909) 694-8426 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.