Mercedes S63 AMG Coupe 2015

(Content below from AutoGuide.com)

Mercedes just unveiled the fastest and most exclusive version of its new flagship ahead of its official New York Auto Show debut.

The 2015 S 63 AMG will arrive in a climate controlled garage (possibly) near you later this fall. It will arrive exclusively as an all-wheel drive model with a 5.5-liter biturbo V8 sending 577 hp and 644 lb-ft of torque to all four wheels all the time. The system sends 33 percent of the engine