DUI / DWI Lawyer in DuPage County

If you’ve been arrested for DUI, the consequences can be significant. Driving under the influence of alcohol or drugs can lead to serious penalties, including fines, loss of driving privileges, and even jail time. Whether this is your first offense or you’ve faced charges before, you need an experienced DUI attorney in DuPage County to help you navigate the legal process.

DWI/DUI Overview

Charged with DUI in DuPage County? Let Us Defend You

A DUI arrest is an intimidating experience. The possibility of losing your license, paying fines, or facing jail time is enough to cause anyone stress. At Hanauer Law, our criminal defense lawyers in DuPage County, IL, understand how much is at stake, and we’re here to help. Rob Hanauer and his legal team provide dedicated legal representation that ensures you’re not just another case number. We’ll make sure you understand your rights and what we’re doing to defend them.

Contact a DUI Defense Lawyer in DuPage County

It’s important to act quickly when charged with a DUI in DuPage County. The sooner you reach out to us, the sooner we can start working on your defense. A DUI conviction could lead to substantial fines, jail time, and the suspension or revocation of your license. Contact Hanauer Law for a consultation, and let’s discuss how we can protect your future.

DUI Charges vs. Minor Traffic Violations in Illinois

Most minor traffic violations, such as speeding or running a stop sign, result in a ticket. But DUI is different—because it involves impairment, it is considered a much more serious offense with harsher penalties. The legal BAC limits in Illinois are as follows:

Drivers under 21: 0.00
Commercial drivers: 0.04
School bus drivers: 0.00
Drivers over 21: 0.08

What Aggravating Factors
Turn a DUI Into a Felony?

Not every DUI carries the same exposure. Illinois law lays out a specific set of aggravating factors that push a DUI from a misdemeanor into a felony—and once one of these applies, the case moves out of traffic court and into felony court, where the stakes are considerably higher.

Third or Subsequent DUI: A third offense is automatically charged as a Class 2 felony, carrying three to seven years in prison, regardless of how long ago your prior offenses occurred. Illinois has no lookback period, so a DUI from decades ago still counts against you. Fourth offenses remain Class 2 (no probation), a fifth is a Class 1 felony, and a sixth or subsequent is a Class X felony. All fines carry a maximum of $25,000.
Driving on a Suspended or Revoked License: If your license was already suspended or revoked because of a prior DUI, a new DUI charge becomes a Class 4 felony, punishable by one to three years in prison.
No Valid License or Insurance: A DUI committed without a valid driver's license or without vehicle insurance is also charged as a Class 4 felony, even on a first offense.
Great Bodily Harm or Disfigurement: If the DUI caused a crash resulting in great bodily harm, permanent disability, or disfigurement to another person, the charge carries a sentencing range of one to twelve years in prison.
A Death Resulting from the DUI: A DUI that causes the death of another person is charged as a Class 2 felony, with a mandatory sentence of three to fourteen years for one death, or six to twenty-eight years if more than one person died.
A Child Under 16 in the Vehicle: Transporting a child under 16 on a first DUI is a misdemeanor subject to enhanced penalties. The charge elevates to a felony only if the child is injured in a crash or upon a second offense.

Because these enhancements attach automatically once the underlying facts are established, the strongest defense often starts with challenging whether the aggravating factor actually applies—not just the DUI itself. At Hanauer Law, our DUI attorneys in DuPage County examine every element of your stop, arrest, and charge to determine whether the state can actually prove the factor that elevated your case to a felony, and we build your defense around that answer.

The DUI Arrest Process

When arresting someone for DUI, police must follow specific procedures, starting with probable cause. After pulling you over, the officer will typically request your license and registration and may ask you to perform a field sobriety test or a breathalyzer.

The PBT (preliminary breath test) is often performed on the roadside, but its results are not admissible in Illinois courts. The RBT (station-based breath test) may be admissible if the machine has been properly tested and calibrated.

When Does a DUI Become a Felony?

DUI charges are classified based on the circumstances:

Misdemeanor DUI: A first-time offense may lead to a misdemeanor charge, with penalties that include up to $2,500 in fines, one year in jail, and suspension of your driver’s license.
Felony DUI: Aggravated circumstances—such as a third offense, an accident causing injury, or a child in the vehicle—can result in a felony DUI, with penalties of up to $25,000 in fines and significant jail time.

Get Aggressive DUI Defense in DuPage County

At Hanauer Law, we have extensive experience defending clients against DUI and DWI charges. From faulty breathalyzers to improper field sobriety tests, we’ll explore every option to get your charges reduced or dismissed. Contact us today for a consultation with a DUI lawyer in DuPage County, and let us fight for your rights.