I just picked up my SEL last night. I have 40 miles on mine so far and here is my (admittedly short) experience with my mileage. The car had 99 miles on it when I picked it up. The average showed 36mpg (lifetime) when I took delivery. I reset the lifetime mileage average and set the car for EV plus and Eco Cruise. With those settings, I have driven 3 separate times with the car and saw 42.4mpg on one trip, 46.4mpg on another, and finally a 53mpg trip! The 53mpg was done with no traffic (very early this morning) and I did everything I could to hyper-mile. However, I did drive it 50mph and stop and go through neighborhoods to get a feeling of mixed driving. I will say that, so far, the C-Max seems to be sensitive to driving style much more so than a Prius. That being said, this thing is quick, and very stout for an eco focussed car! I bought this car for work (I do in-home appliance repair) and drive 28,000 miles per year. By my calculations, 1/2 of my $513 per month payment will be offset by gas savings alone, versus my Caravan I have been using. Matt I am totally thrilled!