LifeSafer Ignition Interlock


How to get an interlock license in Missouri?

Follow the steps in our guide to get an interlock license in Missouri. If you need assistance during the process, call a LifeSafer State Expert now at 800-634-3077.

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Information on Missouri DWI and Ignition Interlock Laws


This happens if you fail a breath test, or refuse to take one. You have 15 days from the date of arrest to file a written request for an administrative hearing. If you do not request a hearing, or if it is unsuccessful, you must begin a suspension period which varies according to your prior record of offenses.

Every situation and state is unique, please consult with your attorney or your state licensing authority to confirm your requirements and obligations.

The information provided on this website does not, and is not intended to, constitute legal advice; instead, all information, content, and materials available on this site are for general informational purposes only. Information on this website may not constitute the most up-to-date legal or other information. This website contains links to other third-party websites for the convenience of our readers. Links from LifeSafer Ignition Interlock to other sites, or from other sites to the LifeSafer, do not constitute an endorsement by LifeSafer.


This occurs when you are sentenced by a court after a trial or plea agreement. You must deal with both suspensions in order to regain your driving privileges. You may also face fines,  jail time or other requirements.

Missouri offers DWI Courts as an alternative for a DWI offense. These courts focus on treatment and prevention of further alcohol-related legal problems. More information can be found here.

How much does an ignition interlock cost in Missouri?

An ignition interlock (IID) is about $3 per day on average in Missouri, but you’re paying for more than the device.

LifeSafer has been in the business of helping drivers get back on the road safely for 30 years. We know what we’re doing, which means you won’t be stuck out in the cold – literally.

LifeSafer customer service and reporting specialists are also part of our value. Head into any one of our Missouri installation centers and see for yourself. Licensed LifeSafer interlock installers are constantly updating their training and calibration service. A lot is riding on your breathalyzer working properly, which is why LifeSafer invests in accuracy and ease of use.

Get back on the road today.

Schedule your installation appointment now!