---
title: "Pomona A Topline Smog — Clean Truck Check, Pomona, CA"
description: "Pomona A Topline Smog in Pomona, 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/pomona-a-topline-smog-pomona/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Pomona A Topline Smog

Clean Truck Check tester in Pomona, 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 | 400 W Foothill Blvd, Pomona, CA 91767 |
| County | Los Angeles County |
| Phone | (909) 784-1555 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Pomona A Topline 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 Dada Transportataioion in Pomona, about 1 mile away. [See listing](https://ctcfinder.com/tester/dada-transportataioion-pomona/).

## Clean Truck Check testers in Los Angeles County

Pomona A Topline 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 Pomona itself there are 12 listed businesses, 11 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 Pomona A Topline Smog offer mobile Clean Truck Check testing?

Yes. Pomona A Topline 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 Pomona A Topline Smog test a 2012 or older diesel truck?

Pomona A Topline Smog does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Dada Transportataioion](https://ctcfinder.com/tester/dada-transportataioion-pomona/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Pomona A Topline Smog charge for a Clean Truck Check?

Pomona A Topline Smog has not published prices with us; call (909) 784-1555 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 Pomona A Topline Smog a CARB-credentialed tester?

Pomona A Topline 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

- **[Dada Transportataioion](https://ctcfinder.com/tester/dada-transportataioion-pomona/)** — Pomona, CA 91767 — (626) 522-5222 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Frankie's Carb](https://ctcfinder.com/tester/frankies-carb-pomona/)** — 1123 Bonnie Brae St, Pomona, CA 91767 — (909) 968-2856 — 1 mi. Services: mobile testing, OBD testing.
- **[Macfire Truck Repair](https://ctcfinder.com/tester/macfire-truck-repair-pomona/)** — 1202 Price Street, Pomona, CA 91767 — (909) 919-6997 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Montclair smog center](https://ctcfinder.com/tester/montclair-smog-center-montclair/)** — Montclair, CA 91763 — (626) 650-9633 — 2 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Nancys Truck Registration & Permits](https://ctcfinder.com/tester/nancys-truck-registration-and-permits-montclair/)** — 5461 Holt Blvd STE A, Montclair, CA 91763 — (909) 489-2172 — 2 mi. Services: mobile testing, OBD testing.
- **[Sergio Hermosillo](https://ctcfinder.com/tester/sergio-hermosillo-montclair/)** — Montclair, CA 91763 — (626) 646-8837 — 2 mi. Services: mobile testing.