Illinois · DUI · Checked October 2026
Ignition Interlock Rules in Illinois
Ignition Interlock Rules in Illinois: What Are the Rules?
When Illinois requires an ignition interlock after a DUI.
- First offense
- Required to drive on a monitoring device driving permit during a first offender's summary suspension; the MDDP can be declined
- Repeat offenses
- At least 5 years on all vehicles you own after a second or subsequent DUI conviction; required on any restricted driving permit after 2 or more DUI convictions
First Offense in Illinois
required to drive on a monitoring device driving permit during a first offender's summary suspension; the MDDP can be declined
Repeat Offenses in Illinois
at least 5 years on all vehicles you own after a second or subsequent DUI conviction; required on any restricted driving permit after 2 or more DUI convictions
How the Program Works in Illinois
Monthly fee of up to $30 to the Secretary of State on top of device costs.
More on DUI Law in Illinois
See the full overview of DUI laws in Illinois and read about how ignition interlock programs work.
This page summarizes Illinois law from official sources, checked October 2026. It isn't legal advice; a lawyer licensed in Illinois can advise on your case.
Frequently Asked Questions
Is an Ignition Interlock Required for a First DUI in Illinois?
required to drive on a monitoring device driving permit during a first offender's summary suspension; the MDDP can be declined
Is an Interlock Required for Repeat Offenses?
at least 5 years on all vehicles you own after a second or subsequent DUI conviction; required on any restricted driving permit after 2 or more DUI convictions