Under 625 ILCS 5/11-501(d)(1)(A), any third DUI conviction in Illinois is automatically charged as aggravated DUI, a Class 2 felony. There is no lookback period on prior DUI counts for this purpose. A DUI conviction from 20 years ago still counts as a prior. The chicagoduilawyer.net brand emphasizes this to every client with a prior record: the leap from misdemeanor to felony happens on the third case regardless of how long ago the prior convictions occurred. Prior court supervision on a first DUI does not count as conviction, which is why supervision preservation on the first case has cascading value.
