I've had my car just over three months and have firmware 4.4, IIRC. I normally plug in each night and leave it thus till morning, as Tesla trained me (though I see the 4.5 release notes say different...sigh). My first range charge was three days ago and the car claimed claimed 257 rated miles, though I expected 265 (roughly 3% off). Since I've never done one (no idea whether Tesla did, at the factory), I don't know how if this is a drop or not. I seem to recall from various posts here that there's a slight variation from car to car, so I'm guessing I shouldn't be concerned . . . ??? :scared: I'll be going DC area to just north of Boston in early June and I forget the recommendation, but I seem to recall there's only one of those legs that I may need a range charge for. I guess I'll compare then and see if it's similar or lower. Any thoughts? Freak out? Or just chillax, thinking back to the two or three thumbs ups I got on my road trip this weekend?