What's the difference between a misdemeanor vs. felony DUI?  Alaska has a ten year look back period.  The Court will calculate the time period from the date of the first conviction to the date of the next offense date.  If you have had three previous DUI convictions within a ten year period, you could be looking at a felony DUI.  This is a serious matter because the penalties are quite severe. For example, you would be facing a jail term of no less than 120 days, forfeiture of your vehicle, and the loss of your privilege to drive for a lifetime.  There are modalities to circumvent the onerous lifetime license revocation such as participating and completing a therapeutic court or other in-patient treatment programs. Usually, these programs last 18-months. In addition, there are ways to possibly challenge a prior DUI conviction in order to reduce the case from a felony to a misdemeanor.  One way to do that would be to challenge the prior as being an uncounseled change of plea.  It is very important that you consult with an attorney prior to pleading to any felony DUI matter.