Kia/Hyundai (they're basically the same company since they own each other) have had a horrible track record in the last few years. They cannot build an engine to save their lives. They scrimped on the quality of the piston rings and other internal components and they ware out very quickly.

A Kia with 150k miles is end of life, but a Honda/Toyota with that mileage is basically still being broken in, yet the Honda only has a $2k premium over the Kia.