3 Facts You Need to Know About a First Offense OWI

 Posted on September 03, 2026 in DUI/OWI

If you're facing a first-offense OWI in Wisconsin, you'll want to know how Wisconsin actually classifies this charge, what it can cost you, and when things can take a turn for the worse. All are relevant in challenging the charge in 2026 with the help of an experienced lawyer.

Our Ozaukee County, WI criminal defense lawyer can help you understand your legal options. Remember, a charge is not a conviction. Attorney Paul E. Bucher personally handled hundreds of drunk driving offenses. 

What Key Facts About a First-Offense OWI in Wisconsin Should You Know?

Understanding these three facts can help you know exactly what you're facing and what to expect as your case moves forward.

Fact One: A First OWI Is Usually Treated as Civil, Not Criminal

Under Wisconsin Statute Section 346.63, it's illegal to operate a motor vehicle while impaired by alcohol or another drug to the point where you can't drive safely. This law also bans driving with a prohibited alcohol concentration.

Wisconsin generally treats a first-offense OWI as a civil violation rather than a criminal offense, as long as no factors apply that push it into criminal territory. Under Wisconsin Statute Section 346.65, a standard first OWI is punishable by a civil forfeiture instead of jail time. That means you generally won't end up with a criminal record for a standard first offense. This distinction is important, but it doesn't mean the charge is minor. 

Fact Two: You Can Lose Your License

Even though your first OWI gets treated as a civil matter, your license can still take a hit. A conviction generally means a revocation lasting six to nine months, regardless of the civil classification.

The good news is you may be able to apply for an occupational license during this time. This can let you keep driving for approved purposes, like work or school, while your regular license is revoked.

Fact Three: Certain Circumstances Can Turn Your OWI Case Criminal

Not every first-offense OWI has the same consequences. Certain circumstances can lead to additional penalties or even make the offense criminal. For example, a first OWI can become a criminal offense if you had a passenger under age 16 in the vehicle. An OWI that causes injury can also result in different and potentially criminal penalties depending on the circumstances.

Your blood alcohol concentration can also affect the consequences you face. A BAC of 0.15 or higher does not by itself turn a first OWI into a criminal offense. However, it does trigger an ignition interlock device requirement even for a first offense.

This means two people facing a first OWI can have very different consequences depending on the circumstances of their cases.

What Should You Expect During the Wisconsin OWI Process?

After your arrest, you'll typically face an initial court appearance where the charges are formally presented. This is followed by opportunities to negotiate with the prosecutor or challenge the evidence against you before your case moves toward a final resolution.

Throughout this process, several types of evidence play a role in your case evaluation. This includes field sobriety test results, breath or blood test results, and the officer's own observations.

Can You Challenge the Evidence in a First OWI Case?

You can challenge the evidence in an OWI case, regardless of whether it’s civil or criminal. Several approaches can help your defense, including:

• Challenging whether the traffic stop itself was legally justified

• Questioning the accuracy and administration of field sobriety tests

• Disputing the reliability of breath or blood test results if there were problems with how they were conducted

• Reviewing whether the testing equipment used was properly calibrated

A successful challenge to any of this evidence can significantly affect the outcome of your case. This can sometimes lead to reduced penalties or a complete dismissal depending on the specific weaknesses uncovered.

Schedule a Free Consultation With Our Jefferson County, WI OWI Defense Attorney

Attorney Bucher spent 20 years as the Waukesha County District Attorney. He was elected twice as President of the Statewide District Attorneys Association, serving on dozens of statewide task forces addressing violent crime. Throughout his career, he has litigated some of the most high-profile and complicated cases in Wisconsin.

Contact Bucher Law Group, LLC at 262-446-9222 to talk to an Ozaukee County criminal defense lawyer with the experience these cases need.