---
title: "Samuel Nikoto- TRUCK, BUS, RV Mobile Testing — Clean Truck Check, Newcastle, CA"
description: "Samuel Nikoto- TRUCK, BUS, RV Mobile Testing in Newcastle, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity…"
url: "https://ctcfinder.com/tester/samuel-nikoto-truck-bus-rv-mobile-testing-newcastle/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Samuel Nikoto- TRUCK, BUS, RV Mobile Testing

Clean Truck Check tester in Newcastle, CA (Placer 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 | Newcastle, CA 95658 |
| County | Placer County |
| Phone | (916) 538-7777 |
| Website | carbdieseltest.com |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Samuel Nikoto- TRUCK, BUS, RV Mobile Testing 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 | Yes |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

## Clean Truck Check testers in Placer County

Samuel Nikoto- TRUCK, BUS, RV Mobile Testing is one of 39 testing businesses in Placer County on CARB's public tester list. 36 of them offer mobile testing and 22 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 Samuel Nikoto- TRUCK, BUS, RV Mobile Testing offer mobile Clean Truck Check testing?

Yes. Samuel Nikoto- TRUCK, BUS, RV Mobile Testing 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 Samuel Nikoto- TRUCK, BUS, RV Mobile Testing test a 2012 or older diesel truck?

Yes. Samuel Nikoto- TRUCK, BUS, RV Mobile Testing lists smoke opacity testing, the test CARB requires for diesel trucks of model year 2012 and older (no OBD). See [OBD vs smoke opacity](https://ctcfinder.com/guide/obd-vs-smoke-opacity-test/).

### How much does Samuel Nikoto- TRUCK, BUS, RV Mobile Testing charge for a Clean Truck Check?

Samuel Nikoto- TRUCK, BUS, RV Mobile Testing has not published prices with us; call (916) 538-7777 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 Samuel Nikoto- TRUCK, BUS, RV Mobile Testing a CARB-credentialed tester?

Samuel Nikoto- TRUCK, BUS, RV Mobile Testing 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

- **[Motorhome/Truck test](https://ctcfinder.com/tester/motorhome-truck-test-newcastle/)** — Newcastle, CA 95658 — (916) 243-5089 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[CAP City Diesel Inspections](https://ctcfinder.com/tester/cap-city-diesel-inspections-auburn/)** — 2945 Bell Rd, Auburn, CA 95603 — (916) 538-7777 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[CARB Compliant Mobile Testing](https://ctcfinder.com/tester/carb-compliant-mobile-testing-auburn/)** — 11590 Stonebrook Dr, Auburn, CA 95603 — (916) 572-4917 — 5 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Juan Renderos](https://ctcfinder.com/tester/juan-renderos-auburn/)** — Auburn, CA 95603 — (949) 547-2585 — 5 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Lightfoot Mobile Truck Emissions](https://ctcfinder.com/tester/lightfoot-mobile-truck-emissions-auburn/)** — 12345 Hyde Park Ln, Auburn, CA 95603 — (916) 849-0426 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Mobile Diesel Emissions Testing Inc](https://ctcfinder.com/tester/mobile-diesel-emissions-testing-inc-loomis/)** — 4010 Barton Rd, Loomis, CA 95650 — (916) 530-2525 — 5 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.