Most drunk driving charges in Illinois start as misdemeanors, and the Illinois Secretary of State reports that 86% of drivers arrested for DUI in 2022 were first offenders. But certain facts, like a prior record, an injured passenger, a child in the back seat, or a lapsed insurance policy, can turn a DUI offense into a felony charge. Illinois law calls that an aggravated DUI, and it can bring prison time, a long license revocation, and a permanent criminal record.
A charge is not a conviction, and the state still has to prove both the DUI and the aggravating factor. If you or someone you love faces an aggravated DUI, talk with our team at Dohman Law Group before your first court date. Schedule a free consultation, and we will walk you through what the charge means and where your case stands.
When an Illinois DUI Crosses the Felony Line
An aggravated DUI is any driving under the influence violation charged as a felony under the Illinois Vehicle Code.
The state must prove two things:
- The base DUI. You were in actual physical control of a vehicle while impaired by alcohol, drugs, or cannabis, or with a blood alcohol concentration of 0.08 or more.
- An aggravating factor. One of 12 specific circumstances listed in the statute was also present.
Without that second piece, the case usually stays a Class A misdemeanor. With it, the charge becomes a felony that ranges from a Class 4 felony (1 to 3 years in prison) up to a Class X felony (6 to 30 years).
One rule applies across the board. If a judge grants probation on an aggravated DUI, the law still requires at least 10 days in jail or 480 hours of community service. The court cannot waive that minimum.
The 12 Facts That Turn a DUI Into a Felony Charge
Section 11-501(d)(1) lists every circumstance that makes a DUI aggravated. This chart groups them by type so you can find yours quickly.
| Aggravating factor | Statute | Felony class |
|---|---|---|
| Third DUI violation | (d)(1)(A) | Class 2 |
| Fourth DUI violation | (d)(1)(A) | Class 2, no probation |
| Fifth DUI violation | (d)(1)(A) | Class 1, no probation |
| Sixth or later DUI violation | (d)(1)(A) | Class X |
| Driving a school bus with passengers aboard | (d)(1)(B) | Class 4 |
| Crash causing great bodily harm, permanent disability, or disfigurement | (d)(1)(C) | Class 4 (1 to 12 years if prison) |
| Prior reckless homicide, or prior aggravated DUI involving great bodily harm or death | (d)(1)(D) | Class 3, no probation |
| Crash in a 20 mph school zone causing bodily harm | (d)(1)(E) | Class 4 |
| Crash causing a death | (d)(1)(F) | Class 2 (3 to 14 years for one death) |
| Driving while license is suspended or revoked for DUI or reckless homicide | (d)(1)(G) | Class 4 |
| Driving with no valid license or driving permit | (d)(1)(H) | Class 4 |
| Driving without vehicle liability insurance (knew or should have known) | (d)(1)(I) | Class 4 |
| Crash causing bodily harm to a child under 16 in the vehicle | (d)(1)(J) | Class 4 |
| Second DUI while transporting a child under 16 | (d)(1)(K) | Class 2 |
| Transporting passengers for hire | (d)(1)(L) | Class 4 |
Prior DUI Convictions and License Status
Your driving history drives several of these triggers. A third DUI offense is automatically a felony, and the class climbs with each violation after that.
License problems matter just as much. Driving while your license is suspended or revoked for a prior DUI, or driving with no valid license at all, can lift a first-time DUI into felony territory.
Crashes Involving Injury or Death
A drunk driving car accident that causes great bodily harm is one of the most common aggravated DUI charges. “Great bodily harm” generally means a serious injury, not a minor cut or bruise. Crashes that cause only property damage do not trigger this factor on their own.
When a crash causes a death, the charge becomes a Class 2 felony with 3 to 14 years for one death and 6 to 28 years for two or more. Probation is available only in extraordinary circumstances. Prosecutors may also look at a separate reckless homicide charge in some fatal cases.
Children, School Buses, and Paying Passengers
Illinois treats DUI cases involving vulnerable passengers seriously. Transporting a child under 16 adds penalties even on a first offense, including an extra $1,000 mandatory fine and 25 days of community service in a program that benefits children.
If that child suffers bodily harm, or if it is your second DUI with a minor under 16 in the car, the charge becomes a felony. The same goes for driving a school bus with passengers or carrying passengers for hire.
How Felony Classes Shape Prison Exposure
The felony class sets the sentencing range a judge works within. Illinois uses the same ranges across most felonies.
| Felony class | Prison range | Maximum fine |
|---|---|---|
| Class 4 | 1 to 3 years | $25,000 |
| Class 3 | 2 to 5 years | $25,000 |
| Class 2 | 3 to 7 years | $25,000 |
| Class 1 | 4 to 15 years | $25,000 |
| Class X | 6 to 30 years | $25,000 |
A few aggravated DUI rules stack on top of these ranges:
- High BAC on a third or later DUI. A blood alcohol content of 0.16 or more adds a 90-day mandatory minimum jail term and a minimum fine of $2,500 (or $5,000 on a fourth or later).
- Child passenger on a third or later DUI. The law adds a $25,000 mandatory fine and 25 days of community service.
- Injured child. A (d)(1)(J) charge carries a $2,500 mandatory fine plus 25 days of community service.
Many Class 4 felony DUI cases remain eligible for probation. That said, every case turns on its own facts, the court, and your history.
Consequences That Reach Past the Courtroom
Prison time and heavy fines get the headlines. For many drivers, though, the license and record consequences last far longer.
Driver’s License Revocation
The Illinois Secretary of State revokes your driving privileges after any DUI conviction. In aggravated cases, the minimum revocation periods grow sharply.
| Situation | Minimum license revocation |
|---|---|
| Aggravated DUI with great bodily harm | 2 years |
| Aggravated DUI resulting in death | 2 years (after release from prison) |
| Third DUI conviction | 10 years |
| Fourth or later DUI conviction | Lifetime |
To drive legally during a revocation, you would need to apply for a Restricted Driving Permit. Drivers with two or more DUI convictions who receive a permit must use a Breath Alcohol Ignition Interlock Device (BAIID). After four or more convictions, any permit comes with a lifetime BAIID requirement. To learn how that process works, see our guide on how to get your license back after a DUI.
Other Lasting Effects
- Criminal record. A felony conviction stays on your criminal record. Illinois does not allow DUI convictions to be expunged.
- No court supervision. Court supervision, which can sometimes resolve a first misdemeanor DUI without a conviction, is generally not available on a felony.
- Insurance. Reinstatement typically requires SR-22 high-risk insurance filings.
- Program requirements. Courts and the Secretary of State commonly require alcohol education, treatment, or a victim impact panel.
- Out-of-state drivers. If you hold an out-of-state driver’s license, Illinois shares conviction information with your home state through the Driver License Compact.
Separate from the criminal case, the Illinois Statutory Summary Suspension Law can suspend your license soon after arrest if you fail or refuse chemical testing. That suspension begins on the 46th day after notice.
What Prosecutors Have to Prove
Every aggravated DUI case rests on the same evidence as a standard DUI case, plus proof of the aggravating factor. The state carries the burden of proof beyond a reasonable doubt on both.
On the DUI itself, prosecutors typically rely on:
- The reason for the traffic stop and whether the officer had probable cause to arrest.
- Results from field sobriety tests.
- Chemical tests, including breath, blood, or urine tests.
- Officer observations, dashcam footage, and body camera video.
On the aggravating factor, the proof depends on the charge. That might mean certified driving records, insurance records, medical records showing great bodily harm, or proof that the DUI actually caused the crash.
Where an Aggravated DUI Defense Often Starts
Your defense depends on the evidence, the charge, and the court handling your case. Still, a careful DUI defense attorney will usually review both halves of the case.
Questions about the underlying DUI:
- Did the officer have a lawful reason to stop you?
- Were field sobriety tests given and scored correctly?
- Were blood test results handled, stored, and analyzed properly?
- Did the breath test device meet calibration and maintenance rules?
Questions about the aggravating factor:
- Does the state’s record actually show a qualifying prior DUI violation?
- Does the injury meet the legal definition of great bodily harm?
- Was the DUI a proximate cause of the crash, or did another driver’s conduct play the main role?
- Did you know, or should you have known, the vehicle lacked insurance?
Challenging the aggravating factor does not end a case on its own. However, it can change the charge from a felony to a misdemeanor, which changes everything that follows.
Your First Moves After a Felony DUI Arrest
What you do in the first days after an arrest can affect your case. Here is a practical starting point:
- Stay quiet about the facts. Politely decline to discuss the night with police, insurers, or on social media.
- Keep your paperwork. Save your traffic citation, bond papers, and any notice of summary suspension.
- Write down what you remember. Note times, locations, what you drank or took, and who you were with.
- Watch the clock. You have a limited window to challenge a statutory summary suspension.
- Talk with a DUI attorney early. Early review gives your lawyer time to request video and testing records before they disappear.
For a broader checklist, read our guide on what to do after a DUI.
Facing a Felony DUI With a Firm That Handles DUI Every Day
An aggravated DUI puts your freedom, your license, and your future on the line. Dohman Law Group is a two-generation firm with more than 40 years in Chicagoland courts, and we focus on DUI and traffic defense across Cook, DuPage, Kane, and Lake counties from offices in Rolling Meadows, Wheaton, and Geneva. Learn more about our felony DUI defense work.
We will review the evidence, explain your options in plain language, and fight for the strongest path forward your case allows. You do not have to figure this out alone. Contact Dohman Law Group today for a free case review and get clear answers about your charge.
Frequently Asked Questions
Yes. Most are Class 4 felonies, but some can rise as high as Class X.
Yes. Factors like great bodily harm, an injured child passenger, or driving without a valid license or insurance can make a first DUI a felony.
At least 2 years for a crash causing great bodily harm, 10 years for a third DUI, and life for a fourth or later conviction.
Sometimes. If the state cannot prove the aggravating factor, the charge may drop to a misdemeanor DUI.
