2011 Audi A6

In the filled-to-the-brim sports luxury segment, the Audi A6 and S6 supply both. Luxury notes such as standard leather seats and navigation system are included. The A6 comes with 265 hp on tap. The top-of-the-line S6 produces a whopping 435 hp for a 0-60 mph time of 5.1 seconds. Fuel efficiency in the smaller engines is as high as 30 mpg on the highway ? not too shabby for a 0-60 time of near 6 seconds.