---
title: "A1 CTC Testing — Clean Truck Check, Beaumont, CA"
description: "A1 CTC Testing in Beaumont, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/a1-ctc-testing-beaumont/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# A1 CTC Testing

Clean Truck Check tester in Beaumont, CA (Riverside 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 | 709 Flower St, Beaumont, CA 92223 |
| County | Riverside County |
| Phone | (951) 477-3035 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks A1 CTC Testing 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 | Not listed |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Mike Janzen in Beaumont, about 1 mile away. [See listing](https://ctcfinder.com/tester/mike-janzen-beaumont/).

## Clean Truck Check testers in Riverside County

A1 CTC Testing is one of 251 testing businesses in Riverside County on CARB's public tester list. 233 of them offer mobile testing and 102 do smoke opacity tests. In Beaumont itself there are 8 listed businesses, 7 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 A1 CTC Testing offer mobile Clean Truck Check testing?

Yes. A1 CTC Testing 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 A1 CTC Testing test a 2012 or older diesel truck?

A1 CTC Testing does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Mike Janzen](https://ctcfinder.com/tester/mike-janzen-beaumont/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does A1 CTC Testing charge for a Clean Truck Check?

A1 CTC Testing has not published prices with us; call (951) 477-3035 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 A1 CTC Testing a CARB-credentialed tester?

A1 CTC Testing 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

- **[California Mobile Fleet](https://ctcfinder.com/tester/california-mobile-fleet-beaumont/)** — 36970 Corvina Way, Beaumont, CA 92223 — (909) 674-6413 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[DDT INC](https://ctcfinder.com/tester/ddt-inc-beaumont/)** — 1094 Cardiff Way, Beaumont, CA 92223 — (909) 670-9656 — 1 mi. Services: mobile testing, OBD testing.
- **[Fast Lube & Tine](https://ctcfinder.com/tester/fast-lube-and-tine-beaumont/)** — 975 E 6th St, Beaumont, CA 92223 — (951) 907-9870 — 1 mi. Services: OBD testing, motorhome testing.
- **[Mike Janzen](https://ctcfinder.com/tester/mike-janzen-beaumont/)** — Beaumont, CA 92223 — (909) 800-7593 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Omar’s diesel](https://ctcfinder.com/tester/omars-diesel-beaumont/)** — 35937 Walker Ct, Beaumont, CA 92223 — (909) 287-9406 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Vroomzo, LLC](https://ctcfinder.com/tester/vroomzo-llc-beaumont/)** — 11273 Demaret Dr, Beaumont, CA 92223 — (316) 208-4018 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.