---
title: "Mario Romo — Clean Truck Check, San Luis, AZ | CTC Finder"
description: "Mario Romo in San Luis, AZ is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/mario-romo-san-luis-az/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Mario Romo

Clean Truck Check tester in San Luis, AZ.

> 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 | San Luis, AZ 85336 |
| Phone | (909) 896-2777 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Mario Romo 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 C&C Safety Smoke Check LLC in San Luis, about 1 mile away. [See listing](https://ctcfinder.com/tester/c-and-c-safety-smoke-check-llc-san-luis-az/).

## Clean Truck Check testers in Arizona

Mario Romo is one of 43 testing businesses in Arizona on CARB's public tester list. 36 of them offer mobile testing and 9 do smoke opacity tests.

## 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 Romo offer mobile Clean Truck Check testing?

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

Mario Romo does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [C&C Safety Smoke Check LLC](https://ctcfinder.com/tester/c-and-c-safety-smoke-check-llc-san-luis-az/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

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

Mario Romo has not published prices with us; call (909) 896-2777 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 Romo a CARB-credentialed tester?

Mario Romo 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

- **[C&C Safety Smoke Check LLC](https://ctcfinder.com/tester/c-and-c-safety-smoke-check-llc-san-luis-az/)** — 425 North Raul Grijalva Court, San Luis, AZ 85336 — (928) 318-9914 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Level One Services](https://ctcfinder.com/tester/level-one-services-san-luis-az/)** — 1610 E San Francisco St, San Luis, AZ 85336 — (928) 323-6482 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.