When it first arrived on dealer lots back in 1995, the Audi S6 sported a a 2.2-liter turbocharged inline five-cylinder engine. Humble beginnings, and while the next generation came with a 4.2-liter V8, things didn't get really interesting until the third generation S6 of 2007, which borrowed a 5.2-liter V10 from Lamborghini.
A 2013 redesign replaced the V10 with a new 4-liter turbocharged V8 that's good for 414 horsepower. It allows the S6 to post a 4.7-second 0 to 60 time, while also delivering an improved 17 mpg city and 26 mpg highway. The S6 offers buyers plenty of standard equipment with features such as touchscreen navigation, four-zone climate control, Bluetooth, Audi's MMI system, and a 14-speaker Bose Surround Sound System.