There are a few key differences between DUI and DWI offenses. For one, DUI typically refers to driving under the influence of alcohol, while DWI can refer to driving under the influence of either alcohol or drugs. Additionally, the penalties for a DUI are typically less severe than those for a DWI.
In most states, a first-time DUI offender will only face misdemeanor charges, whereas a first-time DWI offender may be charged with a felony. Furthermore, DMV suspensions and revocations following a DUI are typically shorter than those resulting from a DWI.
Finally, ignition interlock devices are generally only required following a DWI conviction, not after a DUI plea bargain.