Quote Originally Posted by abasile View Post I'm puzzled. Why would the display show 271 rated miles if six of those miles are "below zero"? Isn't the "zero mile reserve" supposed to be hidden from the driver so that he/she won't plan to use those miles of charge? Most Model S's have shown a slight excess over the rated 265 miles RR when brand new. That excess tends to go away within a few months. The very first part of the cell aging (first 10 cycles or so) is more rapid than what happens during most of the life of the battery.