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Underage DUI Defense in Illinois
Reviewed by Alan E. Jones, an Illinois DUI defense attorney and Principal at Alan E. Jones, P.C. Last updated October 13, 2026.
What You Need to Know About Underage DUI in Illinois
Illinois applies two separate laws to a driver under 21. The zero tolerance statute, 625 ILCS 5/11-501.8, suspends the license of an underage driver whose test shows any alcohol above 0.00, while the general DUI statute, 625 ILCS 5/11-501, still applies at 0.08 or on proof of impairment.
- Zero tolerance trigger: A ticket for any traffic violation, plus probable cause that the driver drank any amount, allows the officer to request a test. A refusal or a result above 0.00 starts the suspension.
- Suspension periods: Under 625 ILCS 5/6-208.2, a first suspension runs three months after a positive test and six months after a refusal. A second runs one year or two years.
- An administrative case: A zero tolerance suspension is contested at a Secretary of State hearing under 625 ILCS 5/2-118, not in the circuit court, and it produces no criminal conviction.
- Criminal DUI exposure: An underage driver charged with DUI faces the same Class A misdemeanor range as an adult, in a case prosecuted in the 19th Judicial Circuit Court of Lake County.
- License after conviction: Under 625 ILCS 5/6-205, a DUI conviction before 21 requires revocation. A permit for driving between 5 a.m. and 9 p.m. becomes possible after one year.
- Underage drinking charge: Consumption of alcohol by anyone under 21 is a separate Class A misdemeanor under 235 ILCS 5/6-20.
Alan E. Jones represents drivers under 21 and their families from his Waukegan office, both in the Lake County circuit court and before the Illinois Secretary of State.
Alan E. Jones has defended DUI charges in Lake County courts since 1989, including charges against drivers under 21. When a driver that age is stopped after drinking, one traffic stop can start three proceedings: a zero tolerance suspension, a DUI charge, and an underage drinking charge. The Secretary of State decides the suspension, and the circuit court hears the two charges. Whether you are the driver or the parent, the first thing I do is read the papers the officer handed over, because they show which of the three were actually started.
The criminal charge works the way it does for an adult, and I defend it the same way I defend any case in my Lake County DUI defense practice. The license is where the rules change. You can lose it over a reading far below 0.08, and the suspension starts on a fixed date whether or not anyone has been to court.
What Is the Illinois Zero Tolerance Law?
The Illinois zero tolerance law suspends the license of a driver under 21 who is ticketed for any traffic violation and then either refuses an alcohol test or shows an alcohol concentration above 0.00. The officer must have probable cause to believe the driver drank something. The Secretary of State enters the suspension, and it takes effect on the 46th day after the officer gives notice.
A zero tolerance suspension is an administrative penalty, and 625 ILCS 5/11-501.8 keeps it apart from the criminal courts. The result of a test requested under the zero tolerance law cannot be used in any civil or criminal case. It can be used only at the Secretary of State hearing on the suspension itself. The law also does not apply when the alcohol came only from a religious service or from a prescribed dose of medicine. The record of a first suspension is kept private except while the suspension is in effect, open only to courts, police, prosecutors, the Secretary of State, and the driver. There are two exceptions. A parent or guardian can see the record of a driver under 18, and a commercial license holder gets no privacy at all.
None of this replaces a DUI charge. If you are arrested for DUI and tested under the adult implied consent law, 625 ILCS 5/11-501.1, a result between 0.00 and 0.08 still produces a zero tolerance suspension. A result of 0.08 or more produces the longer adult suspension along with the charge. Unlike a zero tolerance test, that test can be used as evidence in the DUI case, even when the result is below 0.08. A DUI charge can also rest on impairment alone, with no number at all.
How Underage DUI Cases Start on Lake County Roads
Many of these cases start with an ordinary traffic stop. It might be a speeding ticket on Interstate 94 near Gurnee, a lane violation on U.S. Route 41 in Waukegan, or an equipment stop on Route 176 in Libertyville. The zero tolerance law applies only when a ticket is written and the officer has probable cause to believe you drank something. The officer’s report should say what that probable cause was, whether an odor of alcohol, a container in the car, or something you said.
Before any arrest, the officer may ask you to blow into a portable breath tester. You may refuse that roadside test under 625 ILCS 5/11-501.5, and if you take it, you may use the result as evidence later. The test that affects your license is the one requested after the ticket is written, and refusing a breathalyzer at that point brings a longer suspension than failing it.
Lake County DUI charges are prosecuted by the Lake County State’s Attorney’s Office in the 19th Judicial Circuit, the same circuit that hears DUI charges from Waukegan stops at 18 N. County Street.
What Are the Penalties for Underage DUI in Illinois?
If you are convicted of DUI before you turn 21, the offense is a Class A misdemeanor, the same grade an adult faces. It carries less than one year in jail and a fine of up to $2,500 under 730 ILCS 5/5-4.5-55. A conviction also requires revocation of your license. The first restricted permit is not available for a year, and it allows driving only between 5 a.m. and 9 p.m.
| Situation | Governing law | License consequence | Criminal consequence |
|---|---|---|---|
| First zero tolerance suspension, test above 0.00 | 625 ILCS 5/6-208.2 | Three months, with a restricted permit possible after 30 days | None |
| First zero tolerance suspension, refusal | 625 ILCS 5/6-208.2 | Six months, with a restricted permit possible after 30 days | None |
| Second zero tolerance suspension | 625 ILCS 5/6-208.2 | One year after a test or two years after a refusal, with a permit possible after 12 months | None |
| Test of 0.08 or more after a DUI arrest, first offender | 625 ILCS 5/6-208.1 | Six-month statutory summary suspension | DUI charge, Class A misdemeanor |
| Refusal after a DUI arrest, first offender | 625 ILCS 5/6-208.1 | 12-month statutory summary suspension | DUI charge, Class A misdemeanor |
| DUI conviction before 21 | 625 ILCS 5/6-205 | Revocation, with a 5 a.m. to 9 p.m. permit possible after one year | Class A misdemeanor |
| Underage consumption, driver or passenger | 235 ILCS 5/6-20 and 625 ILCS 5/6-206 | Three-month suspension possible on supervision received while in a vehicle | Class A misdemeanor |
Court supervision can keep a first DUI from becoming a conviction, but Illinois allows it only once. 730 ILCS 5/5-6-1 bars supervision on a DUI charge for anyone who has already been convicted of DUI, has already received supervision for DUI, or has pleaded guilty to reckless driving as part of a plea agreement.
How Is a Zero Tolerance Suspension Challenged?
You challenge a zero tolerance suspension at a hearing before the Secretary of State, not in the Lake County courthouse. The statute limits that hearing to a short list of questions:
- Whether the officer had probable cause to believe you were driving and had broken a traffic law
- Whether a traffic ticket was actually issued
- Whether the officer had probable cause to believe you had consumed alcohol
- Whether you refused the test, or completed it with a result above 0.00, after the required warning
- Whether the result came only from a religious service or a prescribed dose of medicine
Asking for the hearing does not delay the suspension. The process is also different from the one adults use after a DUI arrest, which is a petition to rescind filed in the circuit court within 90 days under 625 ILCS 5/2-118.1. If the suspension stands, the Secretary of State may grant a restricted permit for driving to work, school, or medical care. On a first suspension you can apply after 30 days, and the permit requires an alcohol or drug education program.
The lawyer who files your Secretary of State hearing request should be the one who stands next to you in the Lake County courtroom, so that a decision in one case is never made without the other in mind. That is how it works here, because I am the only lawyer at Alan E. Jones, P.C. My practice also includes Illinois driver’s license reinstatement, which is argued before the same agency that decides a zero tolerance suspension.
What Evidence Does a Zero Tolerance Hearing Look At?
A zero tolerance case is decided mostly on documents. The officer’s sworn report has to certify that the test was requested under 625 ILCS 5/11-501.8 and record either the refusal or the result. A report that is incomplete or filled out in error is returned to the police agency without a suspension being entered. The warning form is the next document to check. Before the test, the officer must warn you that a refusal or any result above 0.00 can cost you your license, and you must sign to acknowledge the warning or the officer must note that you declined. When the reading comes from a blood or urine sample analyzed later, the notice can be mailed, and the 46 days run from that notice.
Probable cause is a different issue from the test result. If the report does not say what led the officer to believe you had been drinking, the hearing officer has to rule on that gap even when the result is positive. A reading caused by medicine is proved with the prescription and the pharmacy label, and one caused by a religious service with a statement from whoever led it.
How I Defend Underage DUI and Zero Tolerance Cases
I treat the license case and the criminal case as one plan. The hearing request goes to the Secretary of State early. The questions it raises, especially whether the officer wrote down a real reason to think you had been drinking, are the same questions that test a DUI charge in the 19th Judicial Circuit.
The decision I spend the most time on with young clients is supervision, because Illinois allows it once in a lifetime. If you take supervision at 19 on a case the State could not have proved, you have nothing left for a mistake at 35. Attorneys advise and clients decide. You are my client even when a parent is paying, so I explain that trade to you directly, with your parents in the room if you want them there.
What to Do After an Underage DUI or Zero Tolerance Stop
None of these steps requires a lawyer, and several protect driving time you would otherwise lose.
- Find the date the officer gave you the suspension notice. The suspension starts on the 46th day after that date, not on your court date.
- Keep every paper the officer handed you, including the warning form. The hearing is decided from those documents.
- If you took medicine containing alcohol that day, save the bottle, the label, and the pharmacy record.
- If the alcohol came from a religious service, write down where and when it was held and who led it.
- Stop driving when the suspension takes effect unless you have a permit in hand. Driving while your license is suspended is a separate criminal charge under 625 ILCS 5/6-303.
- Tell your lawyer right away if you hold a commercial license or permit, because the privacy rule for a first suspension does not cover you.
Underage DUI Questions From Illinois Families
Can a Driver Under 21 Get a Monitoring Device Driving Permit?
A driver under 21 can get a monitoring device permit only after a DUI arrest, and only from age 18. The permit under 625 ILCS 5/6-206.1 goes with the adult statutory summary suspension, and the statute excludes anyone under 18. A zero tolerance suspension comes with a different option, a restricted driving permit that the Secretary of State may grant after 30 days on a first suspension.
What Happens to a Zero Tolerance Suspension After a DUI Conviction?
The time you already served on the suspension is credited toward the revocation. When a driver suspended under the zero tolerance law is later convicted of DUI for the same incident, 625 ILCS 5/6-208.2 counts the suspension time toward the minimum revocation period. The revocation itself still follows the conviction.
Does the Zero Tolerance Law Apply to a Driver Who Has Since Turned 21?
The law looks at your age on the day of the stop. It applies to anyone who was under 21 when the traffic ticket was issued and the test was requested, so a 21st birthday before the Secretary of State hearing changes nothing about the suspension.
Does a Zero Tolerance Suspension Affect a Commercial Driver’s License?
A zero tolerance violation can cost a commercial driver the commercial license too. Under 625 ILCS 5/6-514, a commercial license holder who drives a personal vehicle with an alcohol concentration above the zero tolerance limit is disqualified for at least 12 months on a first violation. The record of the suspension is also not kept private for a commercial license holder.
Related Practice Areas
- Suspended driver’s license reinstatement covers what the Secretary of State requires before driving privileges return after a suspension, including the reinstatement fee.
- Revoked driver’s license reinstatement is the formal Secretary of State hearing process for getting a license back after an under-21 DUI conviction.
- Breath alcohol ignition interlock devices are required on any vehicle driven under a monitoring device permit, the option open to first offenders 18 and older after a DUI arrest.
A consultation about an underage DUI or zero tolerance case in Lake County is free, and you can reach me 24/7. Call (847) 336-3900, or write to my Waukegan office through the contact page for Alan E. Jones, P.C. Most of these cases are handled for a flat fee that I quote before I start. Parents are welcome on the first call. Se habla español.