Missouri Ignition Interlock Costs

Smart Start, a certified IID installer in Missouri, offers affordable pricing for one of the best Interlocks available in the state.

While specific costs may vary, our expert Program Advisors are here to provide you with a personalized quote and schedule your installation today.

Get a quick and easy IID installation with Smart Start! Get started today!

¡Obtenga una instalación rápida y fácil de IID con Smart Start! ¡Empieza hoy mismo!

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How much does an Ignition Interlock Device (IID) cost in Missouri?

If you’re facing a DWI charge in Missouri and have been mandated to install an Ignition Interlock Device (IID) or car breathalyzer, you’re probably wondering about the cost. At Smart Start, we understand the challenges that come with a DWI, and that’s why we provide an affordable and user-friendly IID option to support your successful completion of the Interlock program.

Smart Start’s Interlock Pricing in Missouri to Get You Started

One-Time Enrollment Fee

SECURES YOUR SPOT

Depending on your location, you may need to pay a one-time enrollment fee to secure your installation appointment. We strive to schedule your installation appointment before your state-required installation deadline.

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Device Installation Labor Fee

AS LOW AS $125+

You’ll pay an installation fee to the service location who installs your Ignition Interlock Device. Our skilled technicians will have your Interlock installed quickly so you can get back on the road.

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Affordable Month-to-Month Lease

AS LOW AS $94.99+

Along with our affordable monthly lease, we won’t tie you into a long-term contract, giving you the flexibility to meet your Interlock requirement on your own terms.

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Calibration Fee

STARTING FROM
$25+

Depending on your service center’s location, the pricing for services may vary. We recommend contacting your local service center directly to receive accurate pricing information tailored to your region.

+Pricing as of 10/1/23 and is subject to change. Taxes and fees are not included. Total cost may vary depending on your vehicle type and chosen installation location.

How do I know if I need to install an IID in Missouri?

The information in this section is for informational purposes only. It is not intended to and should not be relied upon or construed as a legal opinion or legal advice or to address all circumstances that might arise. Individuals and entities referencing this page are encouraged to consult with their own legal counsel and their monitoring authority. Some information may be dated and may not reflect the most current legal developments. Smart Start expressly disclaims all liability regarding actions taken or not taken based on any or all content.


According to Missouri law, individuals convicted of a second or subsequent intoxication-related traffic offense must install an Ignition Interlock Device on any vehicle operated by individuals with multiple intoxication-related traffic charges on their record as a condition of the limited driving privileges. It’s important to note that in addition to these driver licensing requirements, a court may impose additional conditions. Also, for a first intoxication-related traffic offense, the use of an IID may be mandated.

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Do I Qualify for a Restricted Driving Privilege (RDP) Missouri?

According to the Missouri Department of Revenue website, if your Missouri driving privilege is suspended, revoked, or denied due to a DWI and is not currently eligible for reinstatement—but you need to drive for employment or other important matters—you may be eligible for a Restricted Driving Privilege (RDP).

The RDP, if granted, will allow you to drive a motor vehicle in certain pre-approved situations. If you have had a prior alcohol related offense within the past five years, you are not eligible for a Restricted Driving Privilege (RDP). You may be eligible for a Limited Driving Privilege. Note that RDP is different than Missouri’s Limited Driving Privilege. You can find out more about how to apply for a RDP on the Missouri Department of Revenue website.

Missouri Ignition Interlock Service Center Locations

Let’s begin with an installation in Missouri that aligns with your schedule! With over 25 convenient locations across the state, including St. Louis, Kansas City, and Springfield, our expert technicians are prepared to assist you, often with same-day appointments.

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How do I install a Smart Start Ignition Interlock Device in Missouri?

Installing an IID in Missouri is a straightforward process with Smart Start. We are an approved Ignition Interlock Provider in the state of Missouri. Contact us at (800) 831-3299 to arrange an appointment or complete our online form, and our knowledgeable Program Advisors will take care of the rest. With a network of over 25 service centers throughout Missouri, we’ll find a convenient location for you.

The installation typically takes a few hours, and setting up an appointment is easy. Our skilled technicians will:

  • Install your Interlock Device
  • Demonstrate the proper way to use it
  • Give you hands-on training so you’re comfortable using it
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