What are the penalties for felony DUI in Illinois?

Penalties depend on the felony class. Class 4 felony: 1-3 years prison. Class 2 felony: 3-7 years prison. Class X felony (DUI causing death): 6-30 years prison. All felony DUI convictions also result in mandatory minimum license revocation periods and significant fines.

Felony DUI Defense in Cook County

Q: Is prison mandatory for felony DUI?

It depends on the circumstances. Some felony DUI convictions carry mandatory minimum prison sentences. Others may be eligible for probation, particularly if there are mitigating factors. Our attorneys fight to avoid prison when possible and minimize sentences when it's not.

Aggravated DUI charges carry prison time and permanent consequences. Former prosecutors fighting to protect your freedom.

Felony DUI

When DUI Becomes a Felony — The Stakes Are Life-Changing

Most DUI charges in Illinois are misdemeanors. But certain circumstances elevate the offense to a felony, dramatically increasing the potential consequences. Felony DUI, often called "aggravated DUI," can result in years in state prison, permanent license revocation, and a felony record that affects employment, housing, and civil rights for the rest of your life.

Illinois law recognizes multiple pathways to felony DUI. A third DUI offense is automatically charged as a Class 2 felony, regardless of how much time has passed since previous convictions. DUI causing bodily harm or great bodily harm escalates to felony status. DUI resulting in death can be charged as a Class X felony — the same category as murder and armed robbery.

At these stakes, you need attorneys who understand both sides of the criminal justice system. Our firm consists entirely of former prosecutors who spent years handling serious felony cases. We know how the State builds its case, what evidence they prioritize, and where their arguments have weaknesses. We bring that same intensity and expertise to your defense.

Types of Felony DUI

When DUI Becomes a Felony in Illinois

Third+ DUI Offense

A third DUI is automatically a Class 2 felony in Illinois, carrying 3-7 years in prison. Fourth and subsequent offenses are also Class 2 felonies with enhanced penalties. Prior DUI convictions never "wash away" in Illinois.

DUI Causing Injury

If your DUI causes bodily harm to another person, it becomes a Class 4 felony (1-3 years). If it causes "great bodily harm" or permanent disability/disfigurement, it escalates to Class 2 felony (3-7 years).

DUI Causing Death

Aggravated DUI resulting in death can be charged as a Class 2 felony (3-14 years) or in some cases a Class X felony (6-30 years). These are among the most serious charges in Illinois criminal law.

DUI with Child Passenger

Driving under the influence with a child under 16 in the vehicle is a Class 4 felony for first-time offenders, with enhanced penalties for repeat offenders or if the child is injured.

Defense Approach

Fighting Felony DUI Charges

Challenge Prior Convictions

If your felony charge is based on prior DUI convictions, we examine those priors meticulously. Were you properly represented? Were constitutional rights violated? Invalid prior convictions cannot be used to enhance current charges.

Contest Causation

In DUI causing injury or death cases, the State must prove your impairment caused the harm. Sometimes other factors — road conditions, other driver error, mechanical failure — are the actual cause. We investigate thoroughly.

Challenge Impairment Evidence

Even in felony cases, the State must prove you were impaired. Breathalyzer calibration issues, improperly administered field sobriety tests, and medical conditions affecting results can all undermine the prosecution's case.

Negotiate Reduced Charges

Sometimes the evidence makes trial risky. In those cases, our prosecution experience helps us negotiate effectively for reduced charges, alternative sentencing, or treatment-focused dispositions that minimize incarceration.

FAQ

Felony DUI — Frequently Asked Questions

What makes a DUI a felony in Illinois?

Illinois DUI becomes a felony in several circumstances: third or subsequent offense (Class 2 felony), DUI causing bodily harm (Class 4 felony), DUI causing great bodily harm or death (Class 2 or Class X felony), DUI without insurance that causes injury, DUI while transporting a child under 16, and DUI with a suspended/revoked license from prior DUI.

What are the penalties for felony DUI?

Penalties depend on the felony class. Class 4 felony: 1-3 years prison. Class 2 felony: 3-7 years prison. Class X felony (certain DUI causing death cases): 6-30 years prison. All felony DUI convictions also result in mandatory minimum license revocation periods and substantial fines.

Can a felony DUI be reduced to a misdemeanor?

In some cases, yes. Effective defense work may result in reduced charges through negotiation with prosecutors or by successfully challenging evidence. This might involve proving prior convictions are invalid, challenging causation in injury cases, or suppressing key evidence. Every case is different, but our former prosecutors know how to identify opportunities.

Is prison mandatory for felony DUI?

It depends on the specific circumstances. Some felony DUI convictions carry mandatory minimum prison sentences that judges cannot circumvent. Others may be eligible for probation, particularly if there are mitigating factors. Our attorneys fight aggressively to avoid prison when possible and minimize sentences when it's not.

How long will my license be revoked?

Felony DUI convictions typically result in minimum 5-year license revocation, and in some cases permanent revocation. After certain periods, you may petition for reinstatement through Secretary of State hearings. These hearings are complex and success requires thorough preparation. We help clients navigate these proceedings.

Related Practice Areas

Learn about DUI penalties by offense level, challenging breathalyzer evidence, and navigating the DUI court process.