The Ford F-150 continues to be North America’s quintessential full-size truck. 2011 brings a complete overhaul of its engines, including some V8s being replaced by V6s that are just as powerful but more economical. Unless you really need a V8, the twin-turbo 3.5-litre EcoBoost V6 is an excellent choice. All of the new engines are not only more powerful than the engine they replace, but they are much more economical.