A lot can push consumption high. Some other examples:
This Thanksgiving I had an average of 404wh/mi @ 72mph, and climbing 793 ft, 5mph headwind. Temps were 39F on 19" wheels and AS4 tires.
In contrast back in July, I averaged 291wh/mi @ 72mph, dropping 188 feet, no wind. Temps were 77F on...