Bad word choice on my part, I want something that can do better than 17 mpg. 23-26 average or more is what I'm after, ideally on regular gas. I currently average 19 mpg with my Buick but it needs premium fuel because of the supercharger. I've heard of people getting 35 mpg or better on the highway with the Ecoboost Mustangs and 20+ in city driving, staying out of boost of course.
