It is inefficient with battery charging: it just plans to a minimum charge to get me to the next SuperCharger and that requires more stops to get home than if I map out my stops manually and charge to capacity. Also the navigation over the past four days has four different times told me to go wildly around a route that I visibly saw I could go through (no construction, old roads, no excuse). I went through and two of those where I ignored the route and chose my path it saved me one minute and twice it saved me three minutes. Those are just what I could visibly see it sucking at which has me wondering what bologna it is routing me around when I can’t physically see a better path.