There are plenty of threads on the avg wh usage of owners and their vehicles, but I'm hoping someone can answer this pretty straight forward. I've tried searching for it, but there are too many threads based on user driving habits, instead of constants... If I hopped in a P85D and an 85D, same conditions, same highway same speed (70mph) and drove 300 miles, would they perform the same in terms of usage and range? Can the P85D be AS efficient as the 85D given the right calm driver with a light foot? I'm currently in a S70 and have narrowed down my search for an upgrade to either a P85d or 85d. I need more range, and have found a few enticing deals that make the jump to the P85D feasible. That being said, an 85D is plenty fast, and I'd prefer the increased highway trip range, IF a P85D will never match the highway cruise range of the 85D. (We don't have many superchargers around us, and I drive 200miles/day+ several times a week. As you can tell, I've been obsessively going back and forth between the 2 in my head for quite a while now. Would love some feedback.