What is the Statutory Summary Suspension in Illinois and how do I fight it?

The Statutory Summary Suspension (SSS) is an automatic administrative license suspension that takes effect 46 days after a DUI arrest. It's separate from any criminal conviction. Fail the breathalyzer (0.08%+): 6-month suspension (first offense), 1 year (subsequent). Refuse the test: 12-month suspension (first offense), 3 years (subsequent). To contest the SSS, you must file a Petition to Rescind Statutory Summary Suspension in circuit court within 90 days of the arrest. Missing the 90-day deadline permanently waives your right to a hearing. The hearing examines limited issues: whether the officer had reasonable grounds to believe you were DUI, whether you were properly warned about consequences of refusal, and whether testing procedures were followed correctly. During the suspension period (if you don't rescind it), you can drive with a Monitored Device Driving Permit (MDDP) if you install a BAID (breath alcohol ignition interlock device) — full driving privileges with the interlock.

I got my first Illinois DUI. What are the penalties?

A first Illinois DUI misdemeanor conviction carries: a Class A misdemeanor (up to 364 days in jail, $2,500 fine maximum); 1-year minimum license revocation (not suspension — revocation requires a reinstatement hearing after the period ends, unlike a suspension that lifts automatically); mandatory minimum 100 hours of community service if BAC was 0.16%+; mandatory drug/alcohol evaluation and treatment completion; BAID requirement on any driving permit during revocation. The criminal conviction is permanent and cannot be expunged or sealed. A Restricted Driving Permit (RDP) is available after a waiting period (typically 12 months for first offense) allowing driving to work, school, or treatment. Full license reinstatement requires: completion of revocation period, proof of financial responsibility (SR-22 insurance), completion of substance abuse treatment, and Secretary of State reinstatement hearing.

Is court supervision available for a DUI in Illinois?

No. Court supervision — the disposition that withholds a conviction entry pending completion of a probation period — is specifically excluded for DUI under Illinois law. Every DUI plea of guilty or verdict of guilty in Illinois results in a permanent criminal conviction. This is one of the most important distinctions between DUI and other Illinois misdemeanors. In contrast, first-time defendants charged with theft, minor drug possession, or most other misdemeanors often receive supervision — meaning no conviction on their record if they complete probation successfully. For DUI, that option doesn't exist. This makes the decision whether to plead guilty or fight a DUI more consequential in Illinois than in states where probation-equivalent dispositions don't result in a permanent record. It also means DUI convictions are permanently visible — not sealable, not expungeable.

When does an Illinois DUI become a felony?

An Illinois DUI becomes an aggravated DUI (felony) in several situations: (1) Third or subsequent DUI conviction — Class 2 felony (3–7 years); (2) DUI causing great bodily harm — Class 4 felony; (3) DUI reckless homicide (causing death) — Class 2 felony with a mandatory minimum 3-year prison sentence; (4) DUI while transporting a child under 16 in the vehicle and injury occurs; (5) DUI on a license previously suspended or revoked for a prior DUI; (6) DUI in a school speed zone while school was in session. A second DUI within 20 years is still a misdemeanor in Illinois but carries enhanced penalties (mandatory minimum 5 days jail or 240 hours community service; 5-year revocation; BAID required). The third DUI triggers felony status regardless of how long ago the prior convictions occurred.

Can I refuse the breathalyzer in Illinois and is that better than failing?

You can refuse, but the administrative consequence is more severe than failing. First refusal: 12-month Statutory Summary Suspension vs. 6 months for failure. Second refusal within 5 years: 3-year suspension vs. 1 year for failure. The refusal itself cannot be used as evidence of guilt in the criminal case, but the suspension is significantly longer. Additionally, a refusal doesn't prevent a DUI prosecution — police can still charge you based on observations of impairment, field sobriety test performance, and other evidence without a breath test result. For borderline cases (BAC near 0.08%), refusal might prevent a per se DUI charge (based on measured BAC) but the officer's observations of impairment can still support a common-law impairment charge. In accidents causing injury or death, Illinois law allows police to obtain a blood draw warrant regardless of refusal. The calculus is case-specific — an experienced DUI attorney should evaluate the specific facts.

DUI & Traffic Laws in Illinois (2026)

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Key Takeaways

Statutory Summary Suspension: automatic 46 days post-arrest — 6 months (fail) / 12 months (refuse) first offense; contest within 90 days
Court supervision NOT available for DUI — every Illinois DUI plea is a permanent conviction, unsealable, unexpungeable
MDDP + BAID: first-time offenders can drive during suspension with interlock device — full driving privileges
Third DUI = Class 2 felony (3–7 years); DUI causing death = Class 2 felony with mandatory 3-year minimum
Refusal consequences: longer suspension (12 months vs 6 months) without preventing prosecution based on observation evidence

Key Numbers — Illinois All 50 states →

Filing Deadline 2 years

Fault Rule Modified Comparative

Insurance System At-Fault

Key Statute 735 ILCS 5/13-202

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Illinois DUI Law — Key Facts

BAC limit: 0.08%; aggravated at 0.16%+; zero tolerance for under-21 at 0.00%
Statutory Summary Suspension: automatic license suspension within 46 days of arrest — request hearing within 90 days
First DUI: minimum 1-year license revocation upon conviction; BAID (breath alcohol ignition interlock device) required
Court supervision: NOT available for DUI — every Illinois DUI plea is a conviction on the record

Illinois DUI law (625 ILCS 5/11-501) defines DUI as operating a vehicle while under the influence of alcohol (BAC 0.08%+), while impaired by drugs, or while impaired by a combination. Illinois is notable for two features: the Statutory Summary Suspension (SSS) that automatically suspends the driver's license 46 days after a DUI arrest even before conviction, and the rule that court supervision — which withholds conviction in most Illinois criminal cases — is not available for DUI, meaning every DUI plea or conviction results in a permanent criminal conviction.

Statutory Summary Suspension: Illinois's Automatic Pre-Conviction Suspension

When a driver is arrested for DUI in Illinois and either fails (0.08%+) or refuses the chemical test, a Statutory Summary Suspension (SSS) is automatically imposed 46 days after the arrest. The suspension periods: failure — 6 months (first offense), 1 year (second+ offense); refusal — 12 months (first offense), 3 years (second+ offense). To contest the SSS, the defendant must file a Petition to Rescind Statutory Summary Suspension within 90 days of the arrest. The hearing on the petition occurs in the circuit court — a civil proceeding separate from the criminal case. The grounds for rescinding are limited: the officer lacked reasonable grounds for the arrest, the officer failed to provide proper warnings, or the testing procedures were defective. If the petition is not filed within 90 days, the right to a hearing is permanently waived.

Court Supervision Not Available for DUI

Unlike virtually every other Illinois criminal offense, DUI cannot be resolved by court supervision — the disposition that withholds a conviction. A DUI plea of guilty (or verdict of guilty) is always entered as a conviction in Illinois. This has major consequences: the conviction appears on criminal records, affects professional licenses, and triggers mandatory license revocation. The inability to use supervision means Illinois DUI convictions create permanent records without the possibility of expungement. Illinois does allow sealing of some criminal convictions, but DUI is explicitly excluded from sealing eligibility — a DUI conviction in Illinois stays on the record permanently, visible to the public.

Aggravated DUI: Felony Classifications

Illinois DUI becomes a felony (aggravated DUI) in several circumstances (625 ILCS 5/11-501(d)):

Third DUI conviction or more: Class 2 felony (3–7 years)
DUI causing great bodily harm: Class 4 felony (1–3 years)
DUI causing death (reckless homicide): Class 2 felony (3–14 years) — mandatory minimum 3 years
DUI with a child under 16 in the vehicle: Class 4 felony if injury occurs
DUI while license was suspended/revoked for a prior DUI: Class 4 felony
DUI in a school speed zone with BAC 0.08%+ when school in session: Class 4 felony

BAID: Illinois Ignition Interlock Requirements

Illinois requires a Breath Alcohol Ignition Interlock Device (BAID) as a condition of the Monitored Device Driving Permit (MDDP), which is available during the Statutory Summary Suspension period for first-time DUI offenders with no prior DUI in the past 5 years. The MDDP allows full driving privileges during the suspension, with the BAID preventing the vehicle from starting if alcohol is detected. After conviction, a Restricted Driving Permit (RDP) with BAID requirement is available during the license revocation period. Illinois's BAID requirement is enforced by the Secretary of State's office and violations of BAID conditions can result in extended revocation.

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