A first DUI in Illinois is almost always a Class A misdemeanor, not a felony, and for a clean first offense, jail is uncommon. What makes it confusing is that a first DUI moves on two separate tracks at once: your driver’s license, handled by the Secretary of State, and the criminal case, handled by the court. They run on different clocks and carry different consequences, and a real defense has to account for both.
That does not make it minor. A conviction stays on your Illinois record permanently and revokes your license, so the early days after an arrest are when the most can be done. Pat Weiland spent nearly ten years as a DuPage County Assistant State’s Attorney before moving to the defense side, so our firm reads a first DUI knowing how the State builds one and where it tends to break down.
Is a First DUI a Felony in Illinois?
No. A first DUI in Illinois is a Class A misdemeanor under 625 ILCS 5/11-501. That is the most serious class of misdemeanor, and it carries a maximum of 364 days in jail and fines up to $2,500, but it is still a misdemeanor rather than a felony.
A first DUI only becomes a felony, charged as aggravated DUI, when specific factors are present. The most common are a crash that causes bodily harm, driving without a valid license or without insurance, driving in a school zone, or having a child under 16 in the vehicle. A second or later DUI can also be charged as a felony. When one of those factors is in play, the stakes rise sharply and the case stops being an ordinary first offense.
Penalties for a First DUI Conviction in Illinois
A DUI conviction carries two kinds of consequences that people constantly confuse. There are criminal penalties handed down by the court, and there are administrative penalties handled by the Secretary of State. A first offense draws the most lenient version of each, but both are real.
Criminal penalties
If you are convicted of a first DUI, the court can impose up to one year in jail and fines up to $2,500. In practice, a first offense with no aggravating factors more often results in probation or court supervision rather than jail, though that is never guaranteed and depends on the facts. A conviction also commonly comes with a mandatory alcohol and drug evaluation, any treatment the evaluation recommends, and possible community service.
The consequence that surprises people most is permanence. Illinois does not expunge DUI convictions, ever, no matter how much time passes. Once a DUI conviction is on your record, the only way to remove it is a pardon directly from the Governor. That is why avoiding the conviction in the first place is so much more valuable than trying to clean it up later.
Administrative penalties
Separate from the criminal sentence, a conviction hits your driving privileges. A first DUI conviction revokes your license for a minimum of one year, and getting it back is not automatic. Before you can drive again, you can expect to pay reinstatement fees and file SR-22 insurance, which proves financial responsibility and raises your premiums. Your vehicle registration can also be suspended in connection with the offense, and in many cases you will have to attend a Secretary of State hearing to show you are eligible for reinstatement.
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Two Types of License Suspensions for a DUI
There are two different actions that can hit your license. One is administrative, started automatically by the Secretary of State the moment you fail or refuse a chemical test, whether or not you are ever convicted. The other is criminal, ordered by the court only if you are convicted of the DUI itself. They are separate, and a first offense can involve both.
The statutory summary suspension
The statutory summary suspension is automatic and administrative. It begins on the 46th day after your arrest, and it runs regardless of what happens in your criminal case. How long it lasts depends on one thing: whether you failed the chemical test or refused it.
For a first offender, failing a chemical test with a result of .08 or higher carries a six-month suspension. Refusing the test carries a twelve-month suspension. That gap surprises people, because refusing feels like the safer choice in the moment, and it is often not.
For summary suspension purposes, you count as a first offender if you have not had a DUI conviction, court supervision for DUI, or a prior summary suspension in the past five years.
The post-conviction revocation
The second action is different. If your DUI ends in a conviction, the court revokes your license for a minimum of one year on a first offense. A revocation is more serious than a suspension because your privileges do not simply return at the end of a set period. You have to earn them back. This is one more reason the outcome of the criminal case carries so much weight.
46 Days
he clock on your license starts immediately. To challenge the statutory summary suspension, your attorney must file a petition to rescind, and the window to act is short. Waiting past the deadline can mean losing the chance to contest the suspension at all. If you have been arrested, this is the part that cannot sit.
Can You Still Drive After a First DUI?
For most first offenders, the honest answer is yes. Illinois provides a permit called a Monitoring Device Driving Permit, or MDDP, that lets a first offender drive during the statutory summary suspension. There are no time-of-day limits and no restrictions on where you can go, as long as your vehicle has a Breath Alcohol Ignition Interlock Device installed.
The device, called a BAIID, connects to your ignition. You provide a breath sample before the car will start, and the device prompts you for random retests while you drive. It also includes a camera to confirm who is taking the test. The permit and device are governed by 625 ILCS 5/6-206.1.
Here is the part that other firms tend to skip, and it matters. Refusing the chemical test disqualifies you from an MDDP. So the advice you sometimes hear, to always refuse testing, can carry a serious hidden cost. A refusal means a longer twelve-month suspension and no permit to drive during it. Whether refusing helped or hurt you is a case-by-case question, and it is exactly the kind of thing worth talking through with someone who has sat on the prosecution side of these files.
Court Supervision for a First DUI
Court supervision is one of the most important options available to a first offender, and it exists almost exclusively for a first offense. It works like this: you plead guilty, the judge sets conditions, and if you complete those conditions within the time allowed, the case is dismissed and no conviction is entered on your record.
That last part is the whole point. Because supervision is not a conviction, it does not trigger the mandatory license revocation that follows a DUI conviction. Common conditions include fines, an alcohol evaluation, any recommended treatment, a victim impact panel, and community service. Supervision is available under 730 ILCS 5/5-6-1, and it is granted at the judge’s discretion.
A few limits are worth knowing. Supervision is not available for a second DUI. And when a chemical test shows a higher alcohol concentration, Illinois attaches enhanced conditions like mandatory community service, so the terms get stricter as the numbers climb. Completing supervision is what keeps a first DUI from ending in a conviction, and from carrying the automatic revocation a conviction brings, which is why so much of a first DUI defense aims at keeping it on the table.
What Happens After a First DUI Arrest
Knowing the sequence takes some of the fear out of it. A first DUI case tends to move through predictable stages, even though the details vary.
From the traffic stop to the resolution, here is what a first DUI usually looks like from start to finish.
1
The Stop and Chemical Test
An officer pulls you over, investigates for impairment, and asks you to take field sobriety tests and a breath or blood test.
2
Notice of Suspension
If you fail or refuse, you receive notice that your statutory summary suspension will begin on the 46th day.
3
The 46-Day Window
This is the period to file a petition to rescind and challenge the suspension before it takes effect.
4
Arraignment
You appear in court, the charge is formally read, and you enter a plea.
5
Discovery and Pretrial Motions
Your attorney obtains the State’s evidence, including reports and video, and can move to suppress evidence gathered improperly.
6
Resolution
The case ends through court supervision, a negotiated plea, a dismissal, or trial, depending on the facts and the strength of the evidence.
One thing that eases a common worry: Illinois no longer uses cash bail. Under the state’s pretrial reforms, most people arrested for a first DUI are released without having to post money, and the focus shifts quickly to the case itself.
How a First DUI Is Defended
A DUI charge is not the same as a conviction, and a breath test result is not the last word. There are several ways to challenge a first DUI, and we examine each of them.
We look at whether the officer had a valid reason to stop you in the first place, because a stop without proper justification can undermine everything that follows. We scrutinize how the field sobriety tests were administered, since those tests are sensitive to conditions that have nothing to do with alcohol. We review the breath and blood testing for calibration, maintenance, and procedural errors. We check whether your rights were honored during the arrest, and we compare the written reports against any available video for inconsistencies.
None of this guarantees a particular result, and no honest lawyer would promise one. What it does is make sure the State actually has to prove its case rather than assume it.
A Former DuPage County Prosecutor on Your Side
Most of what happens in a first DUI is decided early, in choices about charging, evidence, and negotiation. That is where experience on the other side of the aisle changes things. Pat Weiland prosecuted DUI and felony cases for nearly ten years as a DuPage County Assistant State’s Attorney, so he knows how the State evaluates a first DUI, what it looks for, and where its cases tend to be weakest.
He has since been recognized as a Top 100 DUI Lawyer in Illinois by the National Advocacy for DUI Defense. That prosecutorial background shapes how our firm reads a first DUI from the day you call.
Frequently Asked Questions
No. A first DUI is a Class A misdemeanor under 625 ILCS 5/11-501. It only becomes a felony, called aggravated DUI, when factors like a crash causing injury, a child passenger under 16, a school zone, or driving without a valid license or insurance are involved.
Jail is possible, since a Class A misdemeanor carries up to one year, but it is uncommon for a first offense with no aggravating factors. Court supervision or probation is a more typical outcome. The result always depends on the specific facts of your case.
In most cases, yes. First offenders can apply for a Monitoring Device Driving Permit that allows unrestricted driving during the statutory summary suspension, as long as a Breath Alcohol Ignition Interlock Device is installed. One important exception: refusing the chemical test disqualifies you from this permit.
Court supervision does require a guilty plea, and completing it avoids a conviction. But that decision should never be made before an attorney reviews the strength of the State’s evidence, because there may be grounds to challenge the charge or the stop. Talk it through before you commit to a plea.
A DUI conviction cannot be expunged in Illinois, no matter how much time passes. The only way to remove a conviction is a pardon from the Governor. This is a major reason to fight for an outcome, like court supervision, that avoids a conviction entirely.
In Illinois it is a DUI, driving under the influence. DWI and OWI are terms used in other states for the same general offense, but Illinois law and Illinois courts use DUI.
A DUI conviction stays on your record permanently, since Illinois does not expunge them. Court supervision, because it is not a conviction, keeps a DUI conviction off your record when you complete it successfully.