One problem related to engine knocking noise has been reported for the 2017 Kia Motor Optima. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2017 Kia Motor Optima based on all problems reported for the 2017 Optima.
A loud knocking noise in the car 61k miles. . Basically the dealship is saying the car needs a new engine.