DUI vs OWI in Wisconsin: What's the Difference?

If you've been charged in Wisconsin, you might notice the citation says "OWI" not "DUI." What's the difference? And does it matter?

The Short Answer

In Wisconsin, the legal term is OWI — Operating While Intoxicated. Other states use DUI (Driving Under the Influence) or DWI (Driving While Intoxicated). They all refer to the same basic offense: operating a motor vehicle while impaired by alcohol or drugs.

So if someone says they got a "DUI" in Wisconsin, they almost certainly mean they were charged with OWI. The terms are used interchangeably in everyday conversation, even though OWI is the correct legal term.

Why Wisconsin Uses OWI Instead of DUI

Wisconsin's statute (Wis. Stat. § 346.63) prohibits "operating" a motor vehicle while intoxicated, not "driving." This is an important distinction. "Operating" is broader than "driving" — it can include sitting in a parked car with the keys in the ignition, even if the engine isn't running. Wisconsin courts have held that a person can be "operating" a vehicle if they have the ability to start the engine and move the vehicle, even if they're not actually driving at the moment.

This means you can be charged with OWI in Wisconsin even if you weren't actively driving — for example, if you're asleep in your car in a parking lot with the keys in your pocket.

PAC: Prohibited Alcohol Concentration

Wisconsin also has a separate charge called PAC (Prohibited Alcohol Concentration). While OWI focuses on whether you were actually impaired by alcohol or drugs, PAC focuses on whether your BAC exceeded the legal limit — regardless of whether you showed signs of impairment.

In practice, most people are charged with both OWI and PAC for the same incident. The prosecutor can pursue either or both charges, and a conviction on either one carries the same penalties.

What About DUI?

Some Wisconsin municipalities have local ordinances that use the term "DUI" for local violations. But the state-level charge is always OWI. If you see "DUI" on a local citation, it's likely a municipal ordinance violation, not a state OWI charge.

Does the Name Matter for Your Case?

Not really. Whether it's called DUI, OWI, or DWI, the penalties are the same. What matters is the specific facts of your case — your BAC, whether you refused testing, whether there was an accident, and your prior record.

What does matter is having an attorney who understands Wisconsin's specific OWI laws, including the nuances of "operating" versus "driving" and the unique aspects of Wisconsin's implied consent and penalty structure.

Call us at (608) 535-6554 for a free consultation.