The 2015 Ford Mustang EcoBoost Engine Bay Previous 4 / 5 Next A broad underhood view of the 2015 Ford Mustang EcoBoost engine A broad underhood view of the 2015 Ford Mustang EcoBoost engine with the intake box on the right side. Previous 4 / 5 Next Our first good look at the new 2.3L EcoBoost engine under the hood of the 2015 Ford Mustang. Your name * E-mail * The content of this field is kept private and will not be shown publicly. Subject Comment *