---
title: "Alex's Auto Smog — Clean Truck Check, Bell Gardens, CA"
description: "Alex's Auto Smog in Bell Gardens, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and…"
url: "https://ctcfinder.com/tester/alexs-auto-smog-bell-gardens/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Alex's Auto Smog

Clean Truck Check tester in Bell Gardens, 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 | 6301 Florence Ave, Bell Gardens, CA 90201 |
| County | Los Angeles County |
| Phone | (323) 250-2539 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Alex's Auto 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 Ace Diesel Service in Bell Gardens, about 1 mile away. [See listing](https://ctcfinder.com/tester/ace-diesel-service-bell-gardens/).

## Clean Truck Check testers in Los Angeles County

Alex's Auto 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 Bell Gardens itself there are 5 listed businesses, 3 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 Alex's Auto Smog offer mobile Clean Truck Check testing?

Yes. Alex's Auto 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 Alex's Auto Smog test a 2012 or older diesel truck?

Alex's Auto Smog does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Ace Diesel Service](https://ctcfinder.com/tester/ace-diesel-service-bell-gardens/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Alex's Auto Smog charge for a Clean Truck Check?

Alex's Auto Smog has not published prices with us; call (323) 250-2539 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 Alex's Auto Smog a CARB-credentialed tester?

Alex's Auto 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

- **[Cox Automotive Dickinson Fleet](https://ctcfinder.com/tester/cox-automotive-dickinson-fleet-bell/)** — Bell, CA 90201 — (463) 231-7162 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Ace Diesel](https://ctcfinder.com/tester/ace-diesel-bell-gardens/)** — 8450 Garfield Ave, Bell Gardens, CA 90201 — (562) 307-2944 — 1 mi. Services: OBD testing.
- **[Ace Diesel Service](https://ctcfinder.com/tester/ace-diesel-service-bell-gardens/)** — 8450 Garfield Ave, Bell Gardens, CA 90201 — (562) 307-2941 — 1 mi. Services: OBD testing, smoke opacity (non-OBD) testing.
- **[H and R Mobile truck repair](https://ctcfinder.com/tester/h-and-r-mobile-truck-repair-bell-gardens/)** — 6319 Gifford Ave, Bell Gardens, CA 90201 — (562) 523-5752 — 1 mi. Services: mobile testing, OBD testing.
- **[Josue Lucero](https://ctcfinder.com/tester/josue-lucero-bell-gardens/)** — Bell Gardens, CA 90201 — (323) 453-2944 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Tonys Clean Truck Test](https://ctcfinder.com/tester/tonys-clean-truck-test-maywood/)** — 6118 Woodlawn Ave, Maywood, CA 90270 — (323) 501-3778 — 2 mi. Services: mobile testing, OBD testing, motorhome testing.