In Illinois, if you are under the age of 21 with any trace of alcohol in your system, you will lose your driving privileges based on a zero tolerance suspension. In addition to penalties that occur from a DUI, minors can be charged for unlawful consumption of alcohol by a minor. 

The zero tolerance law in Illinois also prohibits a person under 21 from purchasing, accepting, possessing or consuming alcoholic beverages. Infractions result in the suspension or revocation of driving privileges. Any person under age 21 who receives court supervision for the possession, consumption, purchase, or receipt of alcoholic beverages will receive a three-month suspension of driving their privileges.

DUI by a minor Penalties

First Conviction: 

• If BAC above 00.00% but below .08% - 3-month license suspension
• If more than .08% (or more than .05 with additional evidence proving impairment) - minimum 2-year license suspension. Imprisonment (up to 1 year), maximum fine ($2,500).

Second Conviction within 5 Years: 

• If under-21 and BAC above 00.00% but below .08% - 1-year license suspension.
• If more than .08% (or more than .05 with additional evidence proving impairment) - minimum 2-year license suspension, imprisonment (minimum 5 days up to 1 year jail) maximum fine ($2,500)

Refusal of Chemical Test 

• First violation — 6-month suspension of driving privileges for refusal or failure to complete a BAC test.
• Second violation — 2-year suspension of driving privileges for refusal or failure to complete a BAC test.