2018 Subaru Outback fuel system problems

Driving slowly in a parking lot, I applied the brakes as I approached a parking space. Instead of slowing down, the car inexplicably accelerated quickly and did not respond to increased pressure on the brakes. The car was propelled into a metal post, resulting in my glasses flying off and a seat belt bruise, although the airbag did not deploy. I was examined by ambulance personnel at the scene. The car was towed, inspected by an insurance adjuster and eventually declared a total loss.

When I come to a stop and waiting to make a left turn, the vehicle will stall when I start to turn. Engine is still running, but the car essentially stops in mid turn. This leaves me exposed to a broadside collision. Dealer does not know what is causing it and it does not happen every time. In the last 1000 miles it has occurred 4 times. After the hesitation, about 3 -5 seconds, it starts to move. It has also occurred when moving from one lane to another after coming to a near stop due to a closed lane in the road.