The 2015 Ford Mustang EcoBoost Engine Bay 1 / 5 Next A close up shot at the EcoBoost engine of the 2015 Ford Mustang A close up shot at the EcoBoost engine cover of the 2015 Ford Mustang 1 / 5 Next Our first good look at the new 2.3L EcoBoost engine under the hood of the 2015 Ford Mustang. Your name Subject Comment *