Last updated: September 9, 2026
Quick Answer
Most first and second DUI offenses in Illinois are Class A misdemeanors, but a DUI becomes a felony under specific circumstances, most commonly on a third offense or when aggravating factors are present. An aggravated DUI is a felony charge that carries prison time, heavy fines, and permanent license consequences. Understanding exactly when and why a DUI escalates to a felony is critical for anyone facing charges in Illinois.
Key Takeaways
- A first or second DUI in Illinois is typically a Class A misdemeanor, punishable by up to 364 days in jail.
- A third DUI offense automatically becomes a Class 2 felony, regardless of circumstances.
- Aggravating factors, such as causing injury, driving with a child passenger, or driving on a suspended license, can elevate even a first DUI to a felony.
- Aggravated DUI charges range from Class 4 to Class X felonies depending on the severity of the offense.
- A DUI conviction stays on your Illinois driving record permanently and cannot be expunged.
- Fines, court costs, and mandatory fees for a DUI in Illinois can easily exceed $10,000 when all costs are totaled.
- Driving on a suspended or revoked license while committing a DUI adds a separate felony charge.
- Legal representation is strongly advisable for any DUI charge, and is essential for any felony DUI.
What Counts as a Felony DUI in Illinois
A DUI in Illinois becomes a felony when the offense is a third or subsequent conviction, or when specific aggravating factors are present on any offense. Illinois law under 625 ILCS 5/11-501 defines these escalating thresholds clearly.
Here is how the classification breaks down:
| Offense / Circumstance | Charge Level |
|---|---|
| 1st or 2nd DUI (no aggravating factors) | Class A Misdemeanor |
| 3rd DUI | Class 2 Felony |
| 4th DUI | Class 2 Felony |
| 5th DUI | Class 1 Felony |
| 6th or subsequent DUI | Class X Felony |
| DUI causing great bodily harm | Class 4 Felony (minimum) |
| DUI causing death | Class 2 Felony (minimum) |
| DUI with child passenger under 16 | Class 4 Felony |
| DUI in school zone causing injury | Class 4 Felony |
| DUI without valid insurance or license | Class 4 Felony |
For a deeper breakdown of how Illinois classifies criminal offenses, see What Are Felony Classes in Illinois? A Complete Guide.
What Makes a DUI Aggravated in Illinois
An aggravated DUI is any DUI charge that has been elevated beyond a standard misdemeanor due to one or more statutory aggravating factors. The charge does not require a prior DUI conviction, a first-time offender can face aggravated DUI charges if the circumstances qualify.
Under 625 ILCS 5/11-501(d), a DUI becomes aggravated when any of the following are present:
- Third or subsequent DUI offense, automatic felony regardless of other facts
- Great bodily harm or permanent disability caused to another person
- Death of another person caused by the DUI
- Child passenger under age 16 in the vehicle at the time of the offense
- Driving in a school speed zone and causing injury
- Driving without a valid license or insurance at the time of the offense
- Prior conviction for reckless homicide or aggravated DUI involving death
- Driving a school bus carrying passengers
- Second DUI while transporting a minor under 16
Each of these factors can independently trigger a felony charge. When multiple factors are present, the charge level and sentencing range increase further.
Can a First DUI Be a Felony in Illinois
Yes, a first DUI can absolutely be a felony in Illinois if aggravating factors are present. A first offense without any aggravating circumstances is a Class A misdemeanor, but that changes immediately when the offense involves injury, death, a child passenger, or other qualifying factors.
For example:
- A first-time DUI driver who causes great bodily harm to a passenger faces a Class 4 felony, punishable by 1 to 3 years in prison.
- A first-time DUI that results in the death of another person can be charged as a Class 2 felony, carrying 3 to 7 years in prison.
- A first-time DUI with a child under 16 in the vehicle is a Class 4 felony.
For more on what to expect with a first offense, read First Offense DUI Illinois: Know the Charges You Face.
How Many DUIs Before It Becomes a Felony in Illinois
The third DUI is the threshold at which a DUI automatically becomes a felony in Illinois, even without any aggravating circumstances. A second DUI remains a Class A misdemeanor unless aggravating factors are present.
The progression is:
- 1st DUI, Class A Misdemeanor (up to 364 days in jail, up to $2,500 fine)
- 2nd DUI, Class A Misdemeanor (mandatory minimum 5 days jail or 240 hours community service)
- 3rd DUI, Class 2 Felony (3 to 7 years in prison)
- 4th DUI, Class 2 Felony
- 5th DUI, Class 1 Felony (4 to 15 years in prison)
- 6th+ DUI, Class X Felony (6 to 30 years in prison, no probation)
A Class X felony is the most serious non-murder felony classification in Illinois. For context on how serious that is, see Illinois Class X Felony Laws: A Comprehensive Guide.
What Are the Penalties for Aggravated DUI in Illinois
Aggravated DUI penalties in Illinois depend on the specific felony class. All felony DUI convictions carry prison time, fines, mandatory license revocation, and collateral consequences that affect employment, housing, and civil rights.
Felony DUI sentencing ranges in Illinois:
- Class 4 Felony, 1 to 3 years in prison; fines up to $25,000
- Class 2 Felony, 3 to 7 years in prison; fines up to $25,000
- Class 1 Felony, 4 to 15 years in prison; fines up to $25,000
- Class X Felony, 6 to 30 years in prison; no probation eligibility; fines up to $25,000
Beyond prison and fines, a felony DUI conviction in Illinois also results in:
- Mandatory license revocation (minimum 1 year for first felony; permanent revocation is possible for repeat offenders)
- Loss of the right to possess firearms
- Permanent criminal record
- Potential civil liability if injury or death occurred
For a full breakdown of all DUI penalty tiers, see the Illinois DUI Penalties Explained (2026 Guide).
What Happens If You Get a DUI With a Suspended License in Illinois
Driving under the influence while your license is already suspended or revoked is treated as a separate and additional felony offense in Illinois. This is not just an aggravating factor, it triggers an independent criminal charge on top of the DUI itself.
Under Illinois law, a DUI committed while driving on a suspended or revoked license is a Class 4 felony for a first occurrence, escalating with subsequent violations. The driver faces prosecution on both the DUI charge and the suspended license charge simultaneously.
This situation is more common than many people realize, particularly for drivers whose licenses were previously suspended for a prior DUI or traffic violation. For more on the consequences of driving on a suspended license, see The Spiral of Penalties: Driving on a Suspended or Revoked License in Illinois.
What’s the Difference Between a Misdemeanor and Felony DUI in Illinois
The core difference is the severity of punishment and the long-term consequences. A misdemeanor DUI is handled in circuit court and carries jail time of up to 364 days. A felony DUI carries state prison time measured in years, not days, and triggers a permanent set of civil disabilities.
Key differences at a glance:
| Factor | Misdemeanor DUI | Felony DUI |
|---|---|---|
| Maximum incarceration | 364 days (county jail) | 1 to 30 years (state prison) |
| Probation eligibility | Yes | Depends on class (not for Class X) |
| Firearm rights | Retained (unless other factors) | Lost upon conviction |
| Employment impact | Significant | Severe |
| Expungement eligibility | No (DUI convictions are not expungeable) | No |
For a broader explanation of how misdemeanors and felonies differ under Illinois law, see Misdemeanor v. Felony: Key Differences Explained.
How Long Does a DUI Stay on Your Record in Illinois
A DUI conviction stays on your Illinois driving record permanently. Illinois does not allow DUI convictions to be removed from driving records, and the Secretary of State retains them indefinitely.
This is a critical point that many drivers misunderstand. Even a first-offense misdemeanor DUI that results in court supervision (not a conviction) will remain on your driving abstract. A full conviction, misdemeanor or felony, is permanent and visible to employers, insurers, and licensing boards.
Can a DUI Be Expunged From Your Record in Illinois
No. DUI convictions in Illinois cannot be expunged or sealed. This applies to both misdemeanor and felony DUI convictions. Illinois law specifically excludes DUI offenses from expungement eligibility under 20 ILCS 2630/5.2.
The only limited exception involves cases where charges were dismissed or the defendant was acquitted, in those situations, the arrest record may be eligible for expungement. But any actual DUI conviction, at any level, is permanent.
How Much Does a DUI Cost in Illinois Including Fines and Fees
The total financial cost of a DUI in Illinois extends well beyond the statutory fine. When all mandatory costs are added together, a first-offense misdemeanor DUI commonly exceeds $10,000, and a felony DUI can cost far more.
Typical cost categories include:
- Statutory fines, up to $2,500 for misdemeanor; up to $25,000 for felony
- Mandatory court assessments and fees, often $1,000 to $2,500 on top of fines
- DUI evaluation and treatment programs, $200 to $1,000+
- Driver’s license reinstatement fees, $500 minimum
- SR-22 insurance surcharge, can add $1,000 to $3,000 per year for several years
- Attorney fees, $1,500 to $10,000+ depending on complexity
- Ignition interlock device, $75 to $150 per month if required
The indirect costs, lost wages, job loss, professional license consequences, can be even greater.
Do I Need a Lawyer for a DUI in Illinois
Yes, legal representation is strongly advisable for any DUI charge in Illinois, and it is practically essential for any felony DUI. The stakes are too high to navigate alone.
For a misdemeanor DUI, an attorney can pursue reduced charges, court supervision instead of conviction, or challenge the traffic stop and chemical testing procedures. For a felony aggravated DUI, the consequences of a conviction include prison time, permanent loss of civil rights, and a criminal record that follows a person for life.
Common defenses an experienced DUI attorney may raise include:
- Lack of reasonable suspicion for the traffic stop
- Improper administration of field sobriety tests
- Breathalyzer calibration or maintenance failures
- Chain of custody issues with blood samples
- Constitutional violations during the arrest
For experienced legal representation in Cook County, see Skilled Aggravated DUI Attorney Ready to Defend You or review the Best DUI Lawyer in Chicago Illinois resource.
What Are My Options If I Got Charged With Aggravated DUI
If charged with aggravated DUI in Illinois, the available options depend on the specific charge, the evidence, and the defendant’s prior record. The first and most important step is retaining qualified legal counsel before making any statements or decisions.
Potential paths forward include:
- Negotiate a plea agreement, the prosecution may agree to reduce charges or recommend a lighter sentence in exchange for a guilty plea, particularly for first-time felony offenders.
- Challenge the evidence, file pre-trial motions to suppress evidence obtained through an unlawful stop, improper testing, or constitutional violations.
- Pursue a trial defense, contest the charges before a judge or jury if the evidence is weak or procedurally flawed.
- Seek alternative sentencing, some Class 4 felony DUI defendants may be eligible for probation, treatment programs, or boot camp rather than prison, depending on the judge and circumstances.
- Appeal a conviction, if convicted, grounds for appeal may exist based on trial errors or constitutional issues.
For guidance on the full DUI process in Illinois, see Navigating the DUI Process in Illinois: A Complete Guide.
FAQ
Q: Is a DUI automatically a felony in Illinois after a certain number of offenses? Yes. The third DUI conviction in Illinois is automatically a Class 2 felony, regardless of whether any aggravating factors are present. Each subsequent conviction escalates the felony class further.
Q: What BAC level triggers a DUI in Illinois? In Illinois, a BAC of 0.08% or higher is the legal threshold for a standard DUI. Commercial drivers face a 0.04% limit. There is no safe minimum, a driver can be charged at any BAC level if impairment is observed.
Q: Can a DUI charge be reduced to reckless driving in Illinois? Yes, in some cases. A “wet reckless”, reckless driving involving alcohol, is a lesser charge that prosecutors may offer in plea negotiations, particularly for first-time offenders with no aggravating factors. An attorney is needed to pursue this outcome.
Q: Does a DUI in another state count toward Illinois’s felony threshold? Yes. Illinois counts out-of-state DUI convictions when determining whether a new Illinois DUI qualifies as a third or subsequent offense.
Q: Can I get probation instead of prison for a felony DUI in Illinois? It depends on the felony class. Class 4 and Class 2 felony DUI defendants may be eligible for probation in some circumstances. Class X felony DUI defendants are not eligible for probation under Illinois law.
Q: Will a DUI affect my CDL in Illinois? Yes, significantly. A first DUI conviction results in a one-year CDL disqualification. A second conviction results in lifetime CDL disqualification. This applies even if the DUI occurred in a personal vehicle.
Q: How long is my license revoked after a felony DUI in Illinois? A minimum one-year revocation applies after a first felony DUI conviction. Repeat felony DUI offenders face longer revocations and may face permanent revocation, particularly after a 4th or subsequent DUI.
Q: Can I be charged with aggravated DUI for marijuana impairment in Illinois? Yes. Illinois DUI law covers impairment by any substance, including cannabis. A THC concentration of 5 nanograms or more per milliliter of blood creates a legal presumption of impairment. For more, see Key Changes in Illinois Marijuana Laws 2026.
Conclusion
The question “Is a DUI a felony in Illinois? Aggravated DUI explained” does not have a single yes-or-no answer, it depends entirely on the number of prior offenses and whether aggravating factors are present. What is clear is that the stakes escalate quickly. A third DUI is automatically a felony. A first DUI involving injury, a child passenger, or a suspended license is also a felony. And once a DUI reaches felony status, the consequences, prison time, permanent record, lost rights, are life-altering.
Actionable next steps if you or someone you know is facing a DUI charge in Illinois:
- Do not make statements to law enforcement without an attorney present.
- Document everything about the stop, arrest, and testing procedures as soon as possible.
- Contact a qualified Illinois DUI defense attorney before your first court date.
- Request a hearing with the Secretary of State within 90 days of arrest to contest the automatic license suspension.
- Gather any evidence that may support a defense, dashcam footage, witness contact information, medical records.
The difference between a misdemeanor and a felony DUI conviction in Illinois can mean the difference between a fine and years in state prison. Getting the right legal help early is the single most important step a defendant can take.
References
- Illinois Compiled Statutes, 625 ILCS 5/11-501, Illinois Vehicle Code, DUI provisions. https://www.ilga.gov
- Illinois Compiled Statutes, 20 ILCS 2630/5.2, Criminal Identification Act, expungement provisions. https://www.ilga.gov
- Illinois Secretary of State, DUI Statistics and Driver Services. https://www.ilsos.gov
- Illinois State Bar Association, DUI Law Overview. https://www.isba.org
