Car Accelerates On Its Own problems of the 2015 Subaru Outback

My 2015 Subaru Outback -- have experienced sudden and unintended acceleration. I've mentioned this to the stevens creek san jose dealership when taking my car for maintenance, but they said the behavior is as intended.

This concerns a 2015 Subaru Outback limited 6 cylinder. At approx 21,000 mi I was slowing to speed to park in a public parking space on a city street and the Outback sudden acceleration. The Outback hit a city metal post/sign, jumped the curb and collided with a building and damaging a store front with great force. The airbags did not deploy and the automatic collision prevention failed to work. Once before the car had an acceleration surge while driving a public city street at low speed but did not hit anything. Prior to the accident I've also experienced slight hesitation in acceleration when I first accelerate from a stationary position and probably unrelated, the gear shift often gets stuck in park and I have to use force the gear shift to reverse. Having trouble with turning neck from side to side and need to see doctor for evaluation so, not sure if this is considered injury?.

While pulling my father-in-laws Subaru Outback into my garage I place the vehicle into drive while applying the brake. The car immediately accelerated while my foot was on the brake. The car proceeded into garage first hitting the side of the garage door frame and then into the back of my other car which was parked inside the garage. I instinctively applied greater pressure on the brake but this did not stop the car. When the car wedged against the right side column of the garage I released the brake and reapplied immediately. This action caused the car to decelerate to an idle mode. I've been driving a long time and have never experienced an issue like this before. I noticed others have also experienced similar sudden acceleration problems as reported on this site. There was no floor mat obstruction so I can only conclude there is a possible software issue.

While braking to turn into a parking lot from a highway, the car suddenly accelerated and the brakes would not hold the car. Accident was avoided. Symptom only lasted 2-3 seconds.

Unintended acceleration. When driving at low speeds--what would traditionally be 1st and 2nd gear (the car has a continually variable transmission)--and while keeping constant pressure on the gas pedal, the transmission changes the acceleration of the vehicle on its own in a process that feels like it can't find the right "gear", and it provides a "jerking" feeling (usually only a couple of "jerks"). Yet the transmission is not just finding the right gear for a specific constant speed; as it shifts around, the acceleration changes and has, with constant pressure on the pedal, accelerated faster on its own. I have never felt less control of a vehicle as I have with this one.

I was slowing pulling into a parking space and just straightening out the car when I heard a strange sound coming from the engine. Immediately after that I heard a very loud engine revving sound and then suddenly the vehicle shot forward like a rocket, went over the cement barrier and into the wall of a building. It seemed like a very high rate of speed, though the distance was only about 8 feet. The seat belt did not restrain me and my chest slammed into the steering wheel. It was determined later at the hospital that I had a cracked sternum and several broken ribs. I believe there was some sort of mechanical, electrical or software problem that caused this unintended acceleration, and the seat belt also was did not functioning as intended.

Accelerator suddenly became unresponsive resulting in complete slowdown to stop in traffic. Had to shut off vehicle and restart numerous time to get to safe location. Resulted in expensive fix and could have been disastrous if occurred during highway/heavy traffic situation. Apparently was a sensor of some sort. Happened a while ago, so date provided is approximate, but I just became aware of this site.