The punishment for multiple DUI offenders got tougher on July 1 , 2011 for those arrested in Tennessee . The new DUI law increase the mandatory license revocation period for a DUI conviction of a DUI 3rd offense from 3 to 10 years to 6 to 10 years . It also amends the revocation period on a DUI 4th offense conviction from 5 years to 8 years.