I've owned a Model 3 for over 5 months now with almost 6k miles on it. All I can attest to is my personal experience and the experience of some friends who also own a Model 3. Performance and handling on this car is truly amazing. Autopilot (at least in my personal experience) has been excellent. That said I understand the limitations of Autopilot and keep cautious oversight when it's on. I've head a few minor issues…
I am trying to think of any other first generation first year car that had a problem so basic as being on the order of "car doesn't recognize the key/keyfob and so won't start" and I can't think of one.
I hear they got a patch out around last new years to finally address this.