---
title: "Mario Hernandez — Clean Truck Check, Salinas, CA"
description: "Mario Hernandez in Salinas, 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/mario-hernandez-salinas/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Mario Hernandez

Clean Truck Check tester in Salinas, CA (Monterey 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 | Salinas, CA 93901 |
| County | Monterey County |
| Phone | (831) 596-4578 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Mario Hernandez 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 A1 Mobile Service Inc in Salinas, about 1 mile away. [See listing](https://ctcfinder.com/tester/a1-mobile-service-inc-salinas/).

## Clean Truck Check testers in Monterey County

Mario Hernandez is one of 37 testing businesses in Monterey County on CARB's public tester list. 33 of them offer mobile testing and 11 do smoke opacity tests. In Salinas itself there are 21 listed businesses, 18 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 Mario Hernandez offer mobile Clean Truck Check testing?

Yes. Mario Hernandez 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 Mario Hernandez test a 2012 or older diesel truck?

Mario Hernandez does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [A1 Mobile Service Inc](https://ctcfinder.com/tester/a1-mobile-service-inc-salinas/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Mario Hernandez charge for a Clean Truck Check?

Mario Hernandez has not published prices with us; call (831) 596-4578 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 Mario Hernandez a CARB-credentialed tester?

Mario Hernandez 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

- **[A1 Mobile Service Inc](https://ctcfinder.com/tester/a1-mobile-service-inc-salinas/)** — 1112 Abbott St, Salinas, CA 93901 — (831) 595-1113 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Midstate Fleet Repair](https://ctcfinder.com/tester/midstate-fleet-repair-salinas/)** — 721 ABBOTT ST., Salinas, CA 93901 — (831) 809-8814 — 1 mi. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Molina's Service](https://ctcfinder.com/tester/molinas-service-salinas/)** — 341 W Market St, Salinas, CA 93901 — (831) 229-6594 — 1 mi. Services: OBD testing, motorhome testing.
- **[Ricardo Tena](https://ctcfinder.com/tester/ricardo-tena-salinas/)** — Salinas, CA 93901 — (831) 206-6250 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Torres Auto Smog](https://ctcfinder.com/tester/torres-auto-smog-salinas/)** — 369 E Market St, Salinas, CA 93901 — (831) 287-7646 — 1 mi. Services: mobile testing, OBD testing.
- **[Enrique salinas](https://ctcfinder.com/tester/enrique-salinas-salinas/)** — Salinas, CA 93908 — (408) 656-1176 — 2 mi. Services: mobile testing, OBD testing.