---
title: "Many Truck Repair — Clean Truck Check, Hayward, CA"
description: "Many Truck Repair in Hayward, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and nearby…"
url: "https://ctcfinder.com/tester/many-truck-repair-hayward/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Many Truck Repair

Clean Truck Check tester in Hayward, CA (Alameda 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 | 28425 E 11th St, Hayward, CA 94544 |
| County | Alameda County |
| Phone | (510) 925-7559 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Many Truck Repair 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 JR Trucking Services in Hayward, about 1 mile away. [See listing](https://ctcfinder.com/tester/jr-trucking-services-hayward/).

## Clean Truck Check testers in Alameda County

Many Truck Repair is one of 85 testing businesses in Alameda County on CARB's public tester list. 79 of them offer mobile testing and 37 do smoke opacity tests. In Hayward itself there are 18 listed businesses, 17 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 Many Truck Repair offer mobile Clean Truck Check testing?

Yes. Many Truck Repair 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 Many Truck Repair test a 2012 or older diesel truck?

Many Truck Repair does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [JR Trucking Services](https://ctcfinder.com/tester/jr-trucking-services-hayward/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Many Truck Repair charge for a Clean Truck Check?

Many Truck Repair has not published prices with us; call (510) 925-7559 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 Many Truck Repair a CARB-credentialed tester?

Many Truck Repair 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

- **[Jaswinder Singh](https://ctcfinder.com/tester/jaswinder-singh-hayward/)** — Hayward, CA 94544 — (510) 579-7294 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[JR Trucking Services](https://ctcfinder.com/tester/jr-trucking-services-hayward/)** — 479 Custer Rd, Hayward, CA 94544 — (510) 589-2917 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[K1 Smog](https://ctcfinder.com/tester/k1-smog-hayward/)** — 24087 Mission Blvd, Hayward, CA 94544 — (510) 582-2500 — 1 mi. Services: OBD testing, motorhome testing.
- **[Mobile Golden State Emissions Hayward](https://ctcfinder.com/tester/mobile-golden-state-emissions-hayward-hayward/)** — 50 Austin Ave., Hayward, CA 94544 — (925) 818-1831 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Norcal Fleet Service](https://ctcfinder.com/tester/norcal-fleet-service-hayward/)** — 29303 Pacific St, Hayward, CA 94544 — (415) 272-7877 — 1 mi. Services: mobile testing, OBD testing.
- **[R S Transport](https://ctcfinder.com/tester/r-s-transport-hayward/)** — 28425 East 11th street, Hayward, CA 94544 — (510) 760-1487 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.