NHTSA Complaint #11478392 — 2014 KIA OPTIMA

I was driving down the interstate for my work commute apx 70 mph when HEV warning light engaged and vehicle went into limp mode. Had vehicle towed to dealership after running several tests determined the engine was knocking and needed replaced. After 2 months reman engine placed in vehicle. Vehicle function apx 6 months when the exact same problem occured on the highway traveling apx 60 mph. Vehicle is still in dealership. Thankfully, both times I was able to coast to the shoulder and avoid a collision. There is something wrong with these vehicles that need to be fixed.