I have a 2015 model s P90DL with 21” wheels and Michelin p4s summer tires and live in Tacoma Washington this is my first Tesla and it seems like my wh/mi is extremely high for the way I drive. I precondition the car every morning before my drive and have the climate set to auto at 68F and use the seat heater on high. My drive to work is 15 miles away and is mostly down hill with about 50/50 city and hwy, outside temp is usually anywhere from 32F to 45F I drive the speed limit 45 to 50 city and 60 to 65 hwy and I accelerate slow. 70 percent of the time I have someone going around me because of my slow accel! And I struggle to get under 400wh/mi. On the way home i struggle to stay under 500wh/mi for the 15 mile trip home. Do you guys think something is wrong or is this normal consumption?