---
title: "Croffstar Smog — Clean Truck Check, Los Angeles, CA"
description: "Croffstar Smog in Los Angeles, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and nearby…"
url: "https://ctcfinder.com/tester/croffstar-smog-los-angeles/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Croffstar Smog

Clean Truck Check tester in Los Angeles, CA (Los Angeles 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 | 7406 South Western Avenue, Los Angeles, CA 90047 |
| County | Los Angeles County |
| Phone | (661) 649-6754 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Croffstar 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 | Yes |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Cz express llc in Los Angeles, about 2 miles away. [See listing](https://ctcfinder.com/tester/cz-express-llc-los-angeles/).

## Clean Truck Check testers in Los Angeles County

Croffstar Smog is one of 516 testing businesses in Los Angeles County on CARB's public tester list. 465 of them offer mobile testing and 190 do smoke opacity tests. In Los Angeles itself there are 69 listed businesses, 60 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 Croffstar Smog offer mobile Clean Truck Check testing?

Yes. Croffstar 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 Croffstar Smog test a 2012 or older diesel truck?

Croffstar Smog does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Cz express llc](https://ctcfinder.com/tester/cz-express-llc-los-angeles/) (about 2 miles). Trucks from 2013 on get an OBD scan instead.

### How much does Croffstar Smog charge for a Clean Truck Check?

Croffstar Smog has not published prices with us; call (661) 649-6754 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 Croffstar Smog a CARB-credentialed tester?

Croffstar 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

- **[PCMServices, Inc](https://ctcfinder.com/tester/pcmservices-inc-los-angeles/)** — 2010 W Slauson Ave, Los Angeles, CA 90047 — (714) 743-7000 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[SongUKim](https://ctcfinder.com/tester/songukim-los-angeles/)** — 6401 South Western Avenue, Los Angeles, CA 90047 — (323) 731-9000 — 1 mi. Services: OBD testing, motorhome testing.
- **[De Los Angeles Compliance Testing](https://ctcfinder.com/tester/de-los-angeles-compliance-testing-los-angeles/)** — 843 W 104th Pl, Los Angeles, CA 90044 — (323) 449-2222 — 1 mi. Services: mobile testing, OBD testing.
- **[Franco transport services llc.](https://ctcfinder.com/tester/franco-transport-services-llc-los-angeles/)** — 703 W 73rd St, Los Angeles, CA 90044 — (323) 501-9909 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Jepr Clean Truck](https://ctcfinder.com/tester/jepr-clean-truck-los-angeles/)** — 1220 W 65th St, Los Angeles, CA 90044 — (805) 799-5416 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Wilmer](https://ctcfinder.com/tester/wilmer-los-angeles/)** — 1346 88th st, Los Angeles, CA 90044 — (323) 901-3443 — 1 mi. Services: mobile testing, OBD testing.