I've only had my Ecoboost for a couple weeks but so far I'm extremely happy with it. Mixed driving I've been averaging 18+ mpg and on longer trips I've been about 20 mpg. The trip that impressed me the most was my hunting trip in Jackman,ME....anybody who's been there knows how hilly it is...it was freezing rain that day as well...not only did the new F150 handle it great but it also got 19.4 mpg for the trip.

No problems yet but given the fact I haven't used mine much I'll have to let others answer that question for you. Welcome


PS. Don't let the Super Nothin' guys get to you....they are just jealous that you get over 15 mpg and your truck rides well.