If this is your first arrest, you are probably somewhere between embarrassed and terrified. Most people we meet have never been in a courtroom.
Here is the thing worth knowing tonight: a first DUI in Illinois often ends without a conviction. Not always, and not automatically. But the outcome you are imagining is usually worse than the one available to you.
We are former Cook County prosecutors. We used to make the charging decisions on cases like yours. If you want the wider picture of how we defend these, our DUI defense page covers it.
A first DUI in Illinois is a Class A misdemeanor. It carries up to 364 days in jail and fines up to $2,500. Jail is uncommon for a first offense with no aggravating factors. Court supervision is often available, and completing it means no conviction is entered.
3 Common Mistakes People Make After a First DUI Arrest
Two Cases, Not One
This is the part that catches people out. Your arrest started two separate matters, and they run on different clocks.
The criminal case. This is the court date on your paperwork. It moves at the court’s pace.
The license suspension. This is handled by the Secretary of State, not the judge. It happens on its own schedule whether or not your case is resolved.
Your driving privileges are suspended on the 46th day after the arrest notice under 625 ILCS 5/11-501.1 (opens in a new tab). That is automatic. Stopping it means filing a petition to rescind and winning a hearing before that day arrives.
Most people focus on the court date and lose the license by default. We work both from day one.
What Court Supervision Actually Means
Court supervision is the outcome most first offenders are hoping for, even if they have never heard the term.
Supervision is not a conviction. If the court grants it and you complete the conditions, no conviction is entered on your record for that offense.
Typical conditions include:
An alcohol and drug evaluation
Any treatment or education the evaluation recommends
Fines and court costs
A period of supervision, often several months to two years
Sometimes a victim impact panel or community service
It is available once for DUI in Illinois. That is a large part of why a first case is worth fighting properly rather than pleading out quickly.
Why a Conviction Is Different
If a conviction is entered instead, it is permanent. DUI convictions in Illinois cannot be expunged or sealed.
That is the single most important fact on this page. Background checks will show it for the rest of your life, which is why the difference between supervision and conviction matters more than the fine.
Court supervision
No conviction entered
License suspension
Begins on day 46
MDDP eligibility
After 30 days
Maximum jail
Up to 364 days
What a first DUI can carry in Illinois, compared with the outcome most first offenders are working toward. Source: 625 ILCS 5/11-501 and 625 ILCS 5/11-501.1
Keeping Your License While the Case Runs
Even during a suspension, first-time offenders may qualify for a Monitoring Device Driving Permit after 30 days, using a Breath Alcohol Ignition Interlock Device.
For most of our clients this is the practical priority. Losing a license usually means losing a job, and that consequence arrives long before any court date does.
We file for the permit alongside the criminal case rather than treating them as separate errands.
Do I Have to Get a BAIID?
What We Look At First
A first DUI is not a foregone conclusion. These are the places cases come apart, and we check every one:
The reason for the stop. No lawful basis means what followed can be challenged.
The length of the stop. An officer cannot extend a traffic stop into a DUI investigation without reasonable suspicion.
Field sobriety testing. Scored by an officer’s judgment. Cold, injuries, footwear, and medical conditions all affect performance.
The breath machine. Calibration logs and operator certification exist as records. We request them.
The observation period. Breath testing requires a set watch period first. It gets skipped.
Medical explanations. Red eyes and unsteadiness have causes other than alcohol.
Case Results
Both of these were first-time clients facing exactly this situation.
License Suspension Rescinded
Suspension Rescinded
Lauren KtenasAttorney at Law
Charge
DUI
What Was at Stake
One year suspension and the job that depended on driving
Turning Point
The stop was extended without reasonable suspicion
Our client was pulled over for a minor traffic violation. The body camera showed the stop ran 20 minutes, and that the officer had already handed over the citation and explained the court process, which signalled she was free to go.
Only after that did he start asking where she had been and whether she had been drinking. We filed a petition to rescind on reasonable suspicion grounds.
The court granted it and she kept her license.
Not Guilty After Bench Trial
Not Guilty
Alexander KtenasAttorney at Law
Charge
DUI
What Was at Stake
A conviction on a previously clean record
Turning Point
A medical explanation the officers never ruled out
Officers reported red, bloodshot, glassy eyes. The body camera showed our client telling them he had suffered a severe allergic reaction to a cat earlier that night, that he had injured his legs at work, and that he was shivering in the cold.
He performed well on the field sobriety tests anyway. Nobody ever established how much wine he had, when he drank it, or how large the bottle was.
We won the petition to rescind and secured a not guilty verdict at trial.
Prior results do not guarantee a similar outcome. Every case depends on its own facts.
What to Do This Week
Write down everything you remember about the stop while it is fresh.
Find your arrest paperwork and note the date on the suspension notice.
Do not discuss the case on social media or with anyone but your lawyer.
Book the alcohol evaluation early, because it takes time and courts expect it.
Call us well before your court date so the petition deadline is not already gone.
Where Your Case Will Be Heard
Your case goes to the courthouse covering the arrest location, and the practice varies between them.
We also handle DuPage, Will, and Lake county cases. Our Cook County court districts guide sorts it by address if you are unsure.
Frequently Asked Questions
A first DUI is a Class A misdemeanor carrying up to 364 days, but jail is uncommon for a first offense with no aggravating factors. Court supervision or probation is far more typical. Aggravating factors such as an accident, an injury, or a child in the car change that picture significantly.
Supervision is a sentence that is not a conviction. Complete the conditions and no conviction is entered for that offense. It is available once for DUI in Illinois, which is why a first case is worth handling carefully.
Fines can reach $2,500 on a Class A misdemeanor DUI, plus court costs and the expense of any required evaluation or treatment. The exact figure depends on the county and the disposition.
On the 46th day after your arrest notice. It happens automatically through the Secretary of State, separately from your court case. A petition to rescind has to be filed and heard before that date to stop it.
First-time offenders may qualify for a Monitoring Device Driving Permit after 30 days with an interlock device installed. For most people this is the most urgent part of the case.
A DUI conviction cannot be expunged or sealed in Illinois. Court supervision is different, because no conviction is entered in the first place. That distinction is the strongest reason to fight for supervision rather than accept a conviction.
You are not required to have one. But supervision eligibility, the suspension deadline, and the evidence issues all have to be handled correctly and early, and the license clock does not pause while you decide.
Refusing triggers a longer automatic suspension under the implied consent law. It does not mean you have no defense. Our DUI defense page explains how those cases are handled.
Talk to Us Before Day 46
The suspension deadline is the one date that does not move. Body camera footage and calibration records are also easiest to obtain early.
Tell us what happened during the stop and what date is on your notice. We will explain whether supervision is realistic and what has to happen first.
This page is general information about Illinois law and is not legal advice. Outcomes depend on your record and the facts of your case. Speak with an attorney about your situation.
Alexander Ktenas is a respected trial attorney in the Chicago area, known for his tenacious work ethic and deep knowledge of the law. As a managing partner at Ktenas Law, he has successfully conducted hundreds of trials, applying an aggressive trial strategy to defend his clients in a variety of cases, primarily in criminal and DUI defense.
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Lauren Ktenas Attorney at Law 
