2012 Mercedes-Benz S-Class

The S-Class has set the standard for luxury and performance in a sedan. Now, Mercedes-Benz is setting its sights on making its flagship vehicle a standard in fuel economy and reduced emissions as well by adding the diesel engine this year to the hybrid system it introduced last year. Sport-driving fans need not worry, though, as the AMG-tuned models continue to deliver high horsepower in a luxury wrapper.