I'm pretty consistent with my schedule and driving habits. I routinely achieve under 300 wh/mi, but just barely. Ever since update 17.17.4, I've noticed my wh/mi going down 10-15%. I've attached a photo of my latest trips. This wasn't lazy driving... I was stuck in traffic for a time and I flexed its muscle on plenty of occasions, yet I was still able to average a very low consumption rate. I have a 75D with 20s. Has anyone else noticed a difference?