alt Hacker NewsStatistics aren't collected on that. But I've read anecdotes where individuals recounted the autopilot saving them from a severe accident.
You can also google "how many lives has tesla autopilot saved?" and the results suggest that the autopilot is safer than human pilots.
That doesn't make any sense. If I, a human, hit the brakes in time and avoid an accident today, then hit someone tomorrow, should I not be held responsible for the second incident?