2016 SUBARU IMPREZA Engine Problems

I bought my 2016 Subaru Impreza brand new and take great care of it. The car has 80,300 miles and when I did a sharp U turn the car stalled out and I was almost rear-ended. At a busy intersection a few weeks I was at a red light and my car was noticeably idling rough and when the light went green my car stalled out causing the road to be blocked. After taking my car to a certified mechanic I find out that the head gasket has already failed and has coolant leaking into it. It aslo showed a PO302 code. Subaru years before stated that this problem had been fixed when it clearly has not been. I purchased this car because it was suppose to be reliable and now I owe $5,500 to have my car repaired and hopefully run well & safe.

The vehicle's engine displayed an "check engine" light, the cruise control indicator light flashed on and off continuously when not engaged at a standstill, and the VDC vehicle dynamics control off indicator remained lit. This occurred while the vehicle was parked and these indicators came on when the engine was switched on. When driving a noticeable decrease in engine performance and louder exhaust noise was evident. Took vehicle to dealer and subsequently was informed that there was a complete four valve engine failure that would require a complete overhaul of engine at an extremely high cost. The safety issue would be if this had occurred at highway speeds potentially losing control of vehicle causing accident. This was the second time this has occurred with this particular vehicle. When purchased new in 2016 after roughly 38k miles engine failed and had to be rebuilt at dealer cost. This current failure occurred...

KEY LOCKS INTO IGNITION AND VEHICLE NEEDS TO BE RESTARTED AND THE SHIFT MOVED FROM PARK POSITION BACK TO PARK POSITION A FEW TIMES BEFORE THE KEY WILL RELEASE. I HAVE SEEN MANY COMPLAINTS ONLINE REGARDING THIS ISSUE IE. FAILING LOCK CYLINDER/PARK SENSOR PROBLEMS. WILL THERE BE AN INVESTIGATION INTO THIS AND A POSSIBLE RECALL? MY CAR HAS LESS THAN 50,000M ON IT.