The GS combines the spirit of the IS and the comfort of the ES in a slightly bigger format. In addition to the version propelled by the traditional 3.5L V6 engine, the manufacturer is offering a hybrid—the GS 450h—equipped with the V6, which is then paired with an electric motor to generate 338 combined horsepower. In a class all its own, the beastly GS F raises the bar with its 467-horsepower 5.0L V8.