As if the Mercedes-AMG GT 63 S 4MATIC+ wasn’t epic enough, MB is releasing an upgraded version of this high performance luxury sedan. The Mercedes-AMG GT 63 S 4MATIC+ Edition 1 will feature a 639-horse 4.0-litre V8 bi-turbo engine, exclusive paint colors, a carbon fiber AMG aero package, and a Nappa leather interior.