2014 Mercedes-Benz CLS 63 AMG S-Model (US Version)

2014 Mercedes-Benz CLS 63 AMG S-Model (US Version) The Mercedes-Benz CLS63 AMG four-door coupe line gets a performance upgrade and introduces an entirely new model to its 2014 lineup with the CLS63 AMG S-Model. The S-Model boasts performance-oriented AMG 4MATIC all-wheel drive and an AMG V8 biturbo engine that now makes 577 horsepower and 590 . of torque. The AMG V8 biturbo engine (known internally as the M157) continues to be a pinnacle of efficiency: an unusual combination of