One problem related to engine grinding noise has been reported for the 2008 Kia Motor Optima. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Kia Motor Optima based on all problems reported for the 2008 Optima.
Car has 29,061 miles on it when the engine cracked. The car is 12 years old and well maintained. My dad drove this vehicle and had noticed the car making grinding noise. Prior to and during the day it stopped along a windy road driving 30 miles per hour. I researched this problem there is a noted issue that this happens at this mileage. Kia district manager declined to help with this issue. No car at 29000 miles should have engine crack.