---
title: "Donald Longoria — Clean Truck Check, Whittier, CA"
description: "Donald Longoria in Whittier, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome…"
url: "https://ctcfinder.com/tester/donald-longoria-whittier/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Donald Longoria

Clean Truck Check tester in Whittier, 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 | Whittier, CA 90602 |
| County | Los Angeles County |
| Phone | (562) 395-2541 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Donald Longoria 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 Los Angeles County

Donald Longoria 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 Whittier itself there are 10 listed businesses, 10 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 Donald Longoria offer mobile Clean Truck Check testing?

Yes. Donald Longoria 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 Donald Longoria test a 2012 or older diesel truck?

Yes. Donald Longoria 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 Donald Longoria charge for a Clean Truck Check?

Donald Longoria has not published prices with us; call (562) 395-2541 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 Donald Longoria a CARB-credentialed tester?

Donald Longoria 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

- **[CA Truck Inspector](https://ctcfinder.com/tester/ca-truck-inspector-whittier/)** — 8614 Guilford Avenue, Whittier, CA 90605 — (562) 455-3552 — 2 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Cesar Soto](https://ctcfinder.com/tester/cesar-soto-whittier/)** — Whittier, CA 90605 — (323) 215-8681 — 2 mi. Services: mobile testing, OBD testing.
- **[Daniel's Mobile CARB Check](https://ctcfinder.com/tester/daniels-mobile-carb-check-whittier/)** — 13858 Russell St, Whittier, CA 90605 — (562) 325-2509 — 2 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Imperia Group CA](https://ctcfinder.com/tester/imperia-group-ca-whittier/)** — 10221 Lanett Ave, Whittier, CA 90605 — (323) 535-3057 — 2 mi. Services: mobile testing, OBD testing.
- **[J&J Mobile Services](https://ctcfinder.com/tester/j-and-j-mobile-services-whittier/)** — 13502 Whitteri Blvd Suite H 276, Whittier, CA 90605 — (562) 677-5105 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Oscar Meneses](https://ctcfinder.com/tester/oscar-meneses-whittier/)** — Whittier, CA 90605 — (323) 313-7808 — 2 mi. Services: mobile testing, motorhome testing.