Is a third DUI a felony in Rhode Island?

Yes. A third-offense DUI within the lookback window is a felony under RIGL § 31-27-2(d)(3), carrying mandatory state prison time of 1 to 3 years (3 to 5 years at a BAC of .15 or above). Effective July 1, 2025, the lookback window is ten years (increased from five), measured from the prior conviction date to the date of the new offense.