---
title: "Clean Truck Check Testers in El Dorado County, CA (16)"
description: "16 CARB-credentialed Clean Truck Check testers in El Dorado County, California, across 9 cities. 16 offer mobile testing. Search by city, see phone numbers and…"
url: "https://ctcfinder.com/testers/el-dorado-county/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Clean Truck Check testers in El Dorado County, California

16 testing businesses in 9 cities; 16 offer mobile testing, 7 do smoke opacity tests, 12 test motorhomes.

> 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.

## City pages

- [Placerville](https://ctcfinder.com/testers/el-dorado-county/placerville/) — 3 listings
- [Shingle Springs](https://ctcfinder.com/testers/el-dorado-county/shingle-springs/) — 3 listings

## Cool

- **[EZE Testing Services](https://ctcfinder.com/tester/eze-testing-services-cool/)** — 4209 Cherry Acres Cir, Cool, CA 95614 — (530) 350-0467. Services: mobile testing, OBD testing, motorhome testing.

## Diamond Springs

- **[HFW](https://ctcfinder.com/tester/hfw-diamond-springs/)** — 6069 Enterprise Dr, Diamond Springs, CA 95619 — (530) 556-5494. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Vrst](https://ctcfinder.com/tester/vrst-diamond-springs/)** — 6590 Commerce Way, Diamond Springs, CA 95619 — (530) 558-8223. Services: mobile testing, OBD testing, motorhome testing.

## El Dorado

- **[EZ Smog & Repair](https://ctcfinder.com/tester/ez-smog-and-repair-el-dorado/)** — 4504 Missouri Flat Rd, El Dorado, CA 95667 — (530) 626-4211. Services: mobile testing, OBD testing, motorhome testing.

## El Dorado Hills

- **[Cap City Diesel Inspections TRUCK, BUS, RV](https://ctcfinder.com/tester/cap-city-diesel-inspections-truck-bus-rv-el-dorado-hills/)** — 3941 Park Dr Suite 20, El Dorado Hills, CA 95762 — (916) 538-7777. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Steven Smith](https://ctcfinder.com/tester/steven-smith-el-dorado-hills/)** — El Dorado Hills, CA 95762 — (916) 607-7029. Services: mobile testing, OBD testing, motorhome testing.

## Garden Valley

- **[Sierra Diesel](https://ctcfinder.com/tester/sierra-diesel-garden-valley/)** — 5566 Rainier Dr, Garden Valley, CA 95633 — (530) 392-0913. Services: mobile testing, OBD testing.

## Pollock Pines

- **[Olson & Sons Industrial LLC](https://ctcfinder.com/tester/olson-and-sons-industrial-llc-pollock-pines/)** — 6520 Bandit Ct, Pollock Pines, CA 95726 — (530) 363-5651. Services: mobile testing, OBD testing, motorhome testing.
- **[Robles Hard NOX](https://ctcfinder.com/tester/robles-hard-nox-pollock-pines/)** — Pollock Pines, CA 95726 — (530) 957-7313. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.

## Rescue

- **[Derek Somers](https://ctcfinder.com/tester/derek-somers-rescue/)** — Rescue, CA 95672 — (209) 256-5718. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.


## Frequently asked questions

### How many Clean Truck Check testers are in El Dorado County?

CTC Finder lists 16 testing businesses in El Dorado County from CARB's public tester list (16 credentialed testers), last checked November 1, 2026. Listing on CARB's list is optional, so the real number can be higher.

### Is there mobile Clean Truck Check testing in El Dorado County?

Yes. 16 listed businesses in El Dorado County offer mobile testing, which means the tester comes to your yard. Use the Mobile filter above to see them.

### How much does a Clean Truck Check test cost in El Dorado County?

Testers set their own prices. Published prices for an OBD test are usually $50–$135 per vehicle; smoke opacity tests for older trucks often cost more, and mobile testers may add a trip fee. See the [cost guide](https://ctcfinder.com/guide/cost/).