In Minnesota, a person can be arrested for a DUI if their blood alcohol concentration (BAC) is .08% or higher. A DUI, or driving under the influence, is a drunk driving conviction where the BAC is above the state legal alcohol limit, rendering the driver legally impaired. Legal limit in Minnesota: Standard, non-commercial drivers: .08% BAC Drivers under 21: Zero tolerance BAC Penalties, Fines, & Suspension Minnesota DUI & DWI Penalties, Fines, & Suspension Penalty 1st offense 2nd offense 3rd offense 4th offense Sentence Up