Luxurious, prestigious and dynamic, the 2009 Mercedes-Benz E-Class has firmly entrenched itself as the definitive midsize luxury sedan and wagon. Available in rear- and all-wheel-drive layouts, and powered by a diverse engine lineup that's bookended by a high-mileage diesel engine and a pavement-punishing 507-horsepower AMG V8, the E-Class lineup gets a few minor enhancements for the 2009 model year, allowing it to better compete in what has become one of the most competitive segments in the industry.