One problem related to engine noise has been reported for the 2014 Kia Motor Optima Hybrid. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2014 Kia Motor Optima Hybrid based on all problems reported for the 2014 Optima Hybrid.
Engine sounds like it is going to blow up. Valves are very loud and it lurches under acceleration.