I can't tell you how the 2.0L Ecoboost is but I have my new Fusion Hybrid for 2 weeks now and absolutely love it. My 25 mile commute home from work yesterday yielded 54 mpg! But I will say, to get the maximum mileage you have to drive differently than you're probably used to. I traded in a 2006 Mercedes CLS 500 for the FFH and I will say I can no longer blow anyone off the line anymore and part of me misses that. But it's more than made up for by the fact that I've had the car for 2 weeks and still haven't had to put gas in it. It does make it worthwhile at least for me.