The Audi S4 is a tremendous machine. This Germanic sports sedan is fast, refined and able to please even the most jaundiced of drivers. With quattro traction, a slick manual transmission and right-sized body it could be the perfect all-around car. But have the engineering elves in Ingolstadt been able to translate this excellence to a larger package?

The next rung on Audi’s performance ladder is the S6, a similarly styled sports sedan with larger dimensions and an extra helping of horsepower. Yes, it’s bigger, heavier and more expensive than its stable-mate, but this car is not without a list of benefits all its own, even if it eschews a proper three-pedal arrangement in favor of a self-shifting gearbox with twice as many clutches.
http://www.youtube.com/watch?v=7xh09K7ta5o

Read the complete 2015 Audi S6 Review at AutoGuide.com