The projection on most of these batteries life times now is 500k+ miles before they hit 80% of their capacity. The car around the battery will be falling to pieces before they reach that point. Its not like there weren't quite a lot of ICE lemon vehicles with engine and other problems that caused issues, its always been part of any industry and there will still be packs in the future that don't perform as they should for as long as they are meant to.
EVs generally will require less maintenance as they are substantially simpler vehicles with less moving parts.
EVs generally will require less maintenance as they are substantially simpler vehicles with less moving parts.