Felony & Aggravated DUI in Illinois

Updated August 2026

What is aggravated DUI in Illinois?

Aggravated DUI is any DUI that Illinois law classifies as a felony rather than a misdemeanor under 625 ILCS 5/11-501(d). A DUI is "aggravated" when an aggravating factor is present: a third or subsequent offense, an accident causing great bodily harm or death, a passenger under age 16, driving on a revoked or suspended license, causing injury in a school speed zone, or driving without a valid license or insurance. Unlike a misdemeanor DUI, an aggravated DUI carries prison time and is not eligible for court supervision.

When DUI Becomes a Felony

Most first and second DUI offenses in Illinois are misdemeanors. But certain factors elevate a DUI to felony status—carrying potential prison time instead of jail. Understanding what triggers felony charges is critical to building an effective defense.

After defending 3,000+ DUI cases over 25+ years—handling nothing but DUI—Andy Sotiropoulos has the experience to handle the most serious DUI charges. As a State Delegate to the National College for DUI Defense, he brings credentials that matter when the stakes are this high.

What Elevates a DUI to Felony

• Third or Subsequent DUI: Automatically a Class 2 felony (3-7 years prison)
• DUI Causing Great Bodily Harm: Class 4 felony (1-3 years prison)
• DUI Causing Death: Class 2 felony (3-14 years prison)
• DUI While License Revoked/Suspended: Can be elevated to felony depending on prior history
• DUI in a School Zone Causing Injury: Aggravated DUI under 625 ILCS 5/11-501(d)(1)(E) (driving in a 20 mph school speed zone and causing bodily harm in a crash)
• DUI with Child Under 16: Aggravated DUI under 625 ILCS 5/11-501(d)
• DUI Without Insurance Causing Injury: Additional felony charges possible

Felony DUI Penalties

Aggravating Factors That Increase Penalties

Even when a DUI remains a misdemeanor, aggravating factors increase penalties:

• BAC of .16 or Higher: Triggers mandatory minimum penalties and additional fines
• Accident with Property Damage: Additional charges and restitution requirements
• Speeding or Reckless Driving: Combined charges increase sentencing exposure
• Refusing Chemical Testing: Longer license suspension periods

Defense Strategies for Felony DUI

Felony DUI cases use the same fundamental defenses as misdemeanor cases—plus challenges specific to the aggravating factors:

• Challenge the Stop: Was there legal justification? Without it, all evidence may be suppressed.
• Challenge the Evidence: Breathalyzer and field sobriety test evidence can be attacked regardless of charge level.
• Challenge Aggravating Factors: Was injury truly caused by impairment? Was the school zone properly marked? Was the child actually under 16?
• Negotiate Reduction: Reducing a felony DUI to a misdemeanor through plea negotiation is sometimes possible when defense preparation is strong.
• Challenge Prior Convictions: Were prior DUI convictions properly obtained? Invalid priors can reduce the charge level.

625 ILCS 5/11-501(d): Felony Classes and Penalties

Every aggravated DUI charge in Illinois is anchored to one statute: 625 ILCS 5/11-501(d). That subsection does more than list the factors that convert a misdemeanor DUI into a felony — it assigns a specific felony class and sentencing range to each situation. Which class applies depends on the aggravating factor the State is relying on:

• Baseline aggravated DUI: Class 4 felony — 1 to 3 years in prison. This is the default class for most aggravated DUI charges that do not involve bodily harm or a repeat-offense escalation.
• Third DUI: Class 2 felony — 3 to 7 years in prison; a prison sentence is mandatory (probation is not available).
• Fourth DUI: Class 2 felony — 3 to 7 years; probation is not available.
• Fifth DUI: Class 1 felony — 4 to 15 years in prison.
• Sixth or subsequent DUI: Class X felony — 6 to 30 years. Class X is Illinois's most serious non-murder felony class and carries mandatory prison time with no possibility of probation.
• DUI causing great bodily harm, permanent disability, or disfigurement (625 ILCS 5/11-501(d)(1)(C)): Class 4 felony with an enhanced sentencing range of 1 to 12 years — not the standard 1-to-3 years that applies to other Class 4 felonies.
• DUI causing death (625 ILCS 5/11-501(d)(1)(F)): Class 2 felony — 3 to 14 years in prison. Where the crash caused two or more deaths, the range increases to 6 to 28 years.

All convictions under 625 ILCS 5/11-501(d) carry a possible fine of up to $25,000 per offense, are ineligible for court supervision, and result in automatic driver's license revocation. When a crash causes injury or death, additional charges — such as reckless homicide — are frequently filed alongside the aggravated DUI, compounding the total sentencing exposure.

The Twelve Aggravating Factors: 625 ILCS 5/11-501(d)(1)(A) Through (L)

Subsection (d)(1) of the statute lists twelve specific circumstances — lettered (A) through (L) — that make a DUI "aggravated" and therefore a felony. Prosecutors charge aggravated DUI by citing one of these subparagraphs. Knowing which letter applies to your case tells you the felony class and sentencing range you are facing.

• (d)(1)(A) — Third or subsequent DUI. A third or later violation of the DUI statute or a similar law.
• (d)(1)(B) — School bus. DUI while driving a school bus with one or more passengers on board.
• (d)(1)(C) — Great bodily harm. DUI involved in a motor vehicle crash causing great bodily harm, permanent disability, or disfigurement to another person, where the DUI was a proximate cause of the injuries.
• (d)(1)(D) — Prior reckless homicide or prior injury/death DUI. DUI by a person previously convicted of DUI-related reckless homicide, or previously convicted under subparagraph (C) or (F).
• (d)(1)(E) — School speed zone injury. DUI while driving in a 20 mph school speed zone, involved in a crash causing bodily harm (short of great bodily harm) to another person.
• (d)(1)(F) — Death. DUI involved in a motor vehicle, snowmobile, all-terrain vehicle, or watercraft crash that caused another person's death, where the DUI was a proximate cause.
• (d)(1)(G) — Revoked or suspended license. DUI while driving privileges were revoked or suspended for a prior DUI, a statutory summary suspension, leaving the scene of an injury or death crash, or reckless homicide.
• (d)(1)(H) — No valid license. DUI while the driver held no driver's license, permit, restricted driving permit, judicial driving permit, or monitoring device driving permit.
• (d)(1)(I) — No insurance. DUI where the driver knew or should have known the vehicle carried no liability insurance.
• (d)(1)(J) — Injury to a child passenger. DUI involved in a crash causing bodily harm (short of great bodily harm) to a child under 16 the driver was transporting.
• (d)(1)(K) — Second DUI with a child passenger. A second DUI while transporting a person under age 16.
• (d)(1)(L) — Vehicle for hire. DUI while transporting one or more passengers in a vehicle for hire.

Which subparagraph the State charges matters for defense. Each one has its own elements the prosecution must prove — proximate cause under (C) and (F), knowledge of no insurance under (I), the age of the passenger under (J) and (K). If the aggravating element fails, the felony can fall back to a misdemeanor DUI.

Mandatory Minimums Under 625 ILCS 5/11-501(d)

Beyond the felony class, subsection (d)(2) attaches mandatory minimum penalties that a judge cannot suspend or reduce. The most common ones:

• Third DUI with a BAC of 0.16 or higher: mandatory minimum 90 days of imprisonment and a minimum $2,500 fine, on top of all other penalties.
• Third DUI while transporting a person under 16: mandatory $25,000 fine and 25 days of community service in a program benefiting children.
• Fourth, fifth, or sixth DUI with a BAC of 0.16 or higher: mandatory minimum $5,000 fine.
• Fourth, fifth, or sixth DUI while transporting a person under 16: mandatory $25,000 fine and 25 days of community service benefiting children.
• Injury to a child passenger under (d)(1)(J): mandatory $2,500 fine and 25 days of community service benefiting children.
• Second DUI with a child passenger under (d)(1)(K): Class 2 felony with a mandatory $2,500 fine and 25 days of community service; if the child was injured in a crash, the mandatory fine rises to $5,000.

One more rule applies to every aggravated DUI: under (d)(3), any person sentenced under subsection (d) who receives probation or conditional discharge must still serve a minimum of 480 hours of community service or 10 days of imprisonment as a condition. Even the best-case sentencing outcome on an aggravated DUI carries a mandatory penalty. Under subsection (f), courts cannot suspend or reduce these mandatory terms.

Professional and Personal Consequences

A felony DUI conviction has consequences far beyond prison. A felony record affects voting rights, gun ownership, employment opportunities, housing applications, and professional licensing. For professionals—healthcare workers, attorneys, financial professionals—a felony DUI typically means permanent loss of professional licensure.

That's why aggressive defense is not optional. Learn more about professional license defense →

Related Topics: DUI Penalties by Offense • Second DUI Defense • How to Beat a DUI • Getting Charges Dismissed • License Suspension & 90-Day Deadline • DUI & Your Record • Professional License Defense • Service Areas