---
title: "Cristian Preza — Clean Truck Check, Pittsburg, CA"
description: "Cristian Preza in Pittsburg, CA is on CARB's Clean Truck Check tester list.  Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/cristian-preza-pittsburg/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Cristian Preza

Clean Truck Check tester in Pittsburg, CA (Contra Costa 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 | Pittsburg, CA 94565 |
| County | Contra Costa County |
| Phone | (925) 446-9660 |
| Mobile testing | No |
| OBD testing | No |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Cristian Preza can test

| Your vehicle | Test required | This tester |
|---|---|---|
| Diesel, model year 2013 or newer | OBD scan | Not listed |
| Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Not listed |
| 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 Brothers in Pittsburg, about 1 mile away. [See listing](https://ctcfinder.com/tester/brothers-pittsburg/).

If you need a tester at your yard, the nearest listed tester that offers mobile testing is Amunique in Bay Point, about 1 mile away. [See listing](https://ctcfinder.com/tester/amunique-bay-point/).

## Clean Truck Check testers in Contra Costa County

Cristian Preza is one of 61 testing businesses in Contra Costa County on CARB's public tester list. 57 of them offer mobile testing and 38 do smoke opacity tests. In Pittsburg itself there are 5 listed businesses, 4 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 Cristian Preza offer mobile Clean Truck Check testing?

Not according to CARB's tester list; plan to bring the truck to the tester. The nearest listed mobile tester is [Amunique](https://ctcfinder.com/tester/amunique-bay-point/) (about 1 mile).

### Can Cristian Preza test a 2012 or older diesel truck?

Cristian Preza does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Brothers](https://ctcfinder.com/tester/brothers-pittsburg/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Cristian Preza charge for a Clean Truck Check?

Cristian Preza has not published prices with us; call (925) 446-9660 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 Cristian Preza a CARB-credentialed tester?

Cristian Preza 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

- **[Amunique](https://ctcfinder.com/tester/amunique-bay-point/)** — 3628 Willow Pass Rd, Bay Point, CA 94565 — (925) 915-7888 — 1 mi. Services: mobile testing, OBD testing.
- **[Brothers](https://ctcfinder.com/tester/brothers-pittsburg/)** — 3 Shadelands Ct, Pittsburg, CA 94565 — (626) 814-5541 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Jasbir Truck Repair](https://ctcfinder.com/tester/jasbir-truck-repair-pittsburg/)** — 1646 Birdhaven Way, Pittsburg, CA 94565 — (925) 864-2335 — 1 mi. Services: mobile testing, OBD testing.
- **[Joe Auto Smog](https://ctcfinder.com/tester/joe-auto-smog-pittsburg/)** — 2201 Harbor St Suite D, Pittsburg, CA 94565 — (925) 473-9630 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Opacity testing inc](https://ctcfinder.com/tester/opacity-testing-inc-pittsburg/)** — 2127 Sugartree Dr, Pittsburg, CA 94565 — (925) 597-2478 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Karl Grothman](https://ctcfinder.com/tester/karl-grothman-concord/)** — Concord, CA 94521 — (925) 435-9674 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.