Hi I posted a couple of weeks back my surprise at almost not making the trip from Melbourne to Phillip Island and back again in a P100D. At the time I thought it was the use of seat warmers and air conditioning but following another trip this weekend the same almost happened. Starting off at 91% we ended the 300km round trip with 7% to spare (was far more careful this time). Extrapolating the 280wh/km to a full charge would seem to indicate that a P100D is only good for ~360km range? This is some 35% below what Tesla claim. Admittedly there are some mitigating factors - We have 22'' tyres. It was cold (around 12C). Most of the route is at 100km/h. There were two adults and three children. I was driving carefully (although could not use AP as it would not function on most of the trip due to road classification and roadworks) and kept air conditioning load to a minimum. Not using seat warmers and racheting back the A/C helped (at least we had 7% left at the end of the trip this time) - but I would have expected the car to make it there and back far more easily. I guess my question is - do people have similar experience with the X range (what is your average wh/km on a trip) and what strategies are there for improving range?