I pulled up next to a parking space in a parking lot and the Tesla auto park feature was offered on the screen after detecting the parking spot. I pressed to auto park and the tesla proceeded to perform the auto park. During the parking the tesla hit the truck parked in front of the tesla while turning into the space and broke the taillight of the truck and scratched the tesla on right front side. I then braked and disable the auto park after the collision. I reported the incident to Tesla and they reported back that they don't see any issues with the sensors at that time and they say I need to take full responsibility. I cannot think of anything that was particularly challenging for this parking spot or surroundings. It seems a bad calculation by the sensors of Tesla or the software and it made a mistake. Given this experience I cannot trust any of Tesla autopilot features now. They have concluded they will not do anything about it.