Here are the facts: Starting range: 236 miles Ending range: 161 miles Distance: 47.9 miles Total Energy: 19.1 kWh Avg Energy: 399 Wh/mi As normal, my consumption is 4/3rds the rated 300 Wh/mi. However, if I take 47.9 * 4 / 3, I get 64 miles, but I lost 75 miles of range. Where did the other 11 miles go? Similarly, I lost 19.1 kWh and 75 miles of range. The listed range of my car is 265 miles, but 19.1 * 265 / 75 = 67.5 kWh, and I have an 85 kWh battery. This is really quite typical for me: It seems I lose about 1 mile of range for every 1 km I drive, even though my usage is "only" 400 Wh/mi. My question is will this continue all the way down? Does my ending range of 161 miles mean I can only go about 161 * 47.9 / 75 = 103 miles? or can I go 161 * 300 / 399 = 121 miles? In a related question, is the vampire drain included in "total energy" consumed? My car was outside yesterday, and it was in the high-80s.