---
title: "Sara Ludden — Clean Truck Check, Woodland, CA | CTC Finder"
description: "Sara Ludden in Woodland, 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/sara-ludden-woodland/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Sara Ludden

Clean Truck Check tester in Woodland, CA (Yolo 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 | Woodland, CA 95776 |
| County | Yolo County |
| Phone | (530) 662-7373 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Sara Ludden 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 Best Smog in Woodland, about 1 mile away. [See listing](https://ctcfinder.com/tester/best-smog-woodland/).

## Clean Truck Check testers in Yolo County

Sara Ludden is one of 42 testing businesses in Yolo County on CARB's public tester list. 36 of them offer mobile testing and 23 do smoke opacity tests. In Woodland itself there are 12 listed businesses, 11 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 Sara Ludden offer mobile Clean Truck Check testing?

Yes. Sara Ludden 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 Sara Ludden test a 2012 or older diesel truck?

Sara Ludden does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Best Smog](https://ctcfinder.com/tester/best-smog-woodland/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Sara Ludden charge for a Clean Truck Check?

Sara Ludden has not published prices with us; call (530) 662-7373 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 Sara Ludden a CARB-credentialed tester?

Sara Ludden 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

- **[Best Smog](https://ctcfinder.com/tester/best-smog-woodland/)** — 315 East St, Woodland, CA 95776 — (530) 312-7780 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[BusWest](https://ctcfinder.com/tester/buswest-woodland/)** — 210 N East St, Woodland, CA 95776 — (530) 702-9339 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Capital City Diesel Inspection](https://ctcfinder.com/tester/capital-city-diesel-inspection-woodland/)** — 1296 E Gibson Rd, Woodland, CA 95776 — (916) 538-7777 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Carlos Salas](https://ctcfinder.com/tester/carlos-salas-woodland/)** — Woodland, CA 95776 — (530) 537-6759 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Danny Boys](https://ctcfinder.com/tester/danny-boys-woodland/)** — Woodland, CA 95776 — (530) 867-0231 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Homeland Fleet Services](https://ctcfinder.com/tester/homeland-fleet-services-woodland/)** — 14958 County Road 100B, Woodland, CA 95776 — (888) 860-2195 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.