[RedDevil]

Quality issues hit any automaker. It would be strange if Tesla was the exception.
A colleague of mine sold his Merc because of recurring problems. I saw a Toyota windscreen crack spontaneously, for no reason whatsoever. A Volvo owner closed the door firmly but not smahing it or anything; the door window shattered and so did the opposite door window. My parents had 2 Renaults and herded problems so the dealership could fix them all in one go, as they would hardly be at home ever if these problems had to be fixed one by one.
Making cars is difficult. Many thousands of parts, there's always one that gets wrong.

Tesla finally did what they promised. Maybe they needed double shifts or whatnot, I don't know. But they kept word. I bet the worst is past.