Every way you look at it, there’s a world of difference between the 2013 Lexus GS and its predecessor. Esthetically, this year’s model has a lot more character – especially the F Sport. The GS 350 RWD and AWD are both equipped with an energetic 3.5L V6 that develops 306 horsepower. Meanwhile, the GS 450h’s combined power amounts to 338 horsepower, which is distributed via a continuously variable transmission.