DUI Laws, DUI Penalties, and DUI Defense Vehicular Assault Copyright 2010 All rights reserved http://www.duilawsintennessee.com If you cause serious injury to another person while you are Driving Under the Influence of drugs or alcohol, you are now a class D felon. Regardless of whether this is your 1st, 2nd, 3rd, or 4th offense, you will go to jail for a minimum of 2 years and a maximum of 12 years. You will also face stiff fines and court costs.  All other fines and penalties will apply as regarding the number of times you have offended. (see 1st Offense, 2nd Offense, 3rd Offense, 4th Offense).