I apologize if this has been covered elsewhere, but I couldn't find anything. I have a P85D -- or at least it performs like one. The percentage charge meter implies the pack is less than 70 KWh. See the photo below. I went for a 40 mile drive after charging to 90% as I always do. It was reading 89% as I left the garage. As you can see, I had 71% charge after using 11.9 KWh at the end of my drive an hour later. So I used 89 - 71 = 18% of capacity. Dividing the 11.9 KWh total energy used by .18 = 66 KWh total capacity, not 85. This is an example, but the relation between total energy used and percentage capacity used has been very consistent. This time I used sport and range mode to see if the effect was the same, and it is. I normally drive in insane mode without range mode. I used 18% of the battery to drive 39.6 miles, implying a 220 mile range on 100% charge. Using my trip meter-A 319 KWh/mi it implies a 100% range of 220 * 301/319 = 207 miles. Not good, I think. I haven't pursued this up until now because I use the car only for day trips under 100miles round trip, so in a way it's academic. I have never had the charge meter below about 40%, and I have never used a supercharger. But my question is whether anyone else has seen this kind of relationship between charge percentage and total energy used in what is supposed to be a 85 KWh car, or knows of an explanation. Thanks!