---
title: "Charlotte Cuschieri — Clean Truck Check, San Mateo, CA"
description: "Charlotte Cuschieri in San Mateo, CA is on CARB's Clean Truck Check tester list. Offers OBD testing, motorhome testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/charlotte-cuschieri-san-mateo/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Charlotte Cuschieri

Clean Truck Check tester in San Mateo, CA (San Mateo 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 | San Mateo, CA 94402 |
| County | San Mateo County |
| Phone | (650) 455-8824 |
| Mobile testing | No |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Charlotte Cuschieri 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 Less Smog Check in San Mateo, about 1 mile away. [See listing](https://ctcfinder.com/tester/less-smog-check-san-mateo/).

If you need a tester at your yard, the nearest listed tester that offers mobile testing is Less Smog Check in San Mateo, about 1 mile away. [See listing](https://ctcfinder.com/tester/less-smog-check-san-mateo/).

## Clean Truck Check testers in San Mateo County

Charlotte Cuschieri is one of 31 testing businesses in San Mateo County on CARB's public tester list. 27 of them offer mobile testing and 17 do smoke opacity tests. In San Mateo itself there are 4 listed businesses, 3 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 Charlotte Cuschieri 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 [Less Smog Check](https://ctcfinder.com/tester/less-smog-check-san-mateo/) (about 1 mile).

### Can Charlotte Cuschieri test a 2012 or older diesel truck?

Charlotte Cuschieri does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Less Smog Check](https://ctcfinder.com/tester/less-smog-check-san-mateo/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Charlotte Cuschieri charge for a Clean Truck Check?

Charlotte Cuschieri has not published prices with us; call (650) 455-8824 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 Charlotte Cuschieri a CARB-credentialed tester?

Charlotte Cuschieri 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

- **[Less Smog Check](https://ctcfinder.com/tester/less-smog-check-san-mateo/)** — 3925 S El Camino Real, San Mateo, CA 94403 — (669) 377-4881 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Mobile Golden State Emissions San Mateo](https://ctcfinder.com/tester/mobile-golden-state-emissions-san-mateo-san-mateo/)** — 3500 Edison St., San Mateo, CA 94403 — (925) 818-1831 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[EV Auto Service LLC](https://ctcfinder.com/tester/ev-auto-service-llc-san-mateo/)** — 110 S Claremont St, San Mateo, CA 94401 — (650) 293-7738 — 2 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Mohammad Najafpir](https://ctcfinder.com/tester/mohammad-najafpir-burlingame/)** — Burlingame, CA 94010 — (650) 771-8865 — 3 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Carbcheck1](https://ctcfinder.com/tester/carbcheck1-san-carlos/)** — San Carlos, CA 94070 — (650) 430-3981 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Holly Smog](https://ctcfinder.com/tester/holly-smog-san-carlos/)** — 501 Old County Rd Suite A, San Carlos, CA 94070 — (650) 595-1388 — 4 mi. Services: mobile testing, OBD testing, motorhome testing.