So shortly after buying my model 3 the first couple of runs were done with miles. I just wanted to see what I could really get before the real cold set in. So 220 ish was not bad I was not driving eco and ac always on. Then I decided to switch to percentage and plan my routes that way. I found miles don't really matter anymore to be honest. My car has one objective and that is to get me to my destination as fast or a leisurely as possible. It does that just fine and as the battery ages it will still do this just fine. You stop when it suggests charge to recommended level or more and go. I swear after a short duration miles left are just no longer needed. Mileage anxiety and degradation just means a whole lot less when its just like your mobile phone and its going to be cheaper to get there anyway.