---
title: "Rapid Response — Clean Truck Check, Wentzville, MO"
description: "Rapid Response in Wentzville, MO is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/rapid-response-wentzville-mo/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Rapid Response

Clean Truck Check tester in Wentzville, MO.

> 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 | Wentzville, MO 63385 |
| Phone | (636) 875-5049 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Rapid Response 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 Airlimits Nationwide in Saint Louis, about 32 miles away. [See listing](https://ctcfinder.com/tester/airlimits-nationwide-saint-louis-mo/).

## Clean Truck Check testers in Missouri

Rapid Response is one of 6 testing businesses in Missouri on CARB's public tester list. 4 of them offer mobile testing and 1 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 Rapid Response offer mobile Clean Truck Check testing?

Yes. Rapid Response 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 Rapid Response test a 2012 or older diesel truck?

Rapid Response does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Airlimits Nationwide](https://ctcfinder.com/tester/airlimits-nationwide-saint-louis-mo/) (about 32 miles). Trucks from 2013 on get an OBD scan instead.

### How much does Rapid Response charge for a Clean Truck Check?

Rapid Response has not published prices with us; call (636) 875-5049 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 Rapid Response a CARB-credentialed tester?

Rapid Response 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

- **[Tech diesel solutions](https://ctcfinder.com/tester/tech-diesel-solutions-saint-peters-mo/)** — 8 Bishops Crest Ct, Saint Peters, MO 63376 — (314) 710-2283 — 13 mi. Services: mobile testing, OBD testing.
- **[United Nations Truck Centers](https://ctcfinder.com/tester/united-nations-truck-centers-bridgeton-mo/)** — 13918 Saint Charles Rock Rd, Bridgeton, MO 63044 — (708) 351-8605 — 23 mi. Services: mobile testing, OBD testing.