Performance and engine Engine: Naturally aspirated 6.2L V8 Horsepower: 487 hp (an increase from the standard 451 hp) Torque: 442 lb-ft Transmission: Seven-speed automatic with paddle shifters 0-60 mph: 4.4 seconds (standard C63) Top Speed: 174 mph (with the package, an increase from 155 mph) Package enhancements Engine Upgrades: Revised engine management, increased power, and internal component changes like forged pistons and rods from the SLS AMG Braking: Larger brakes with red calipers Interior: Alcantara and leather steering wheel Exterior: Carbon fiber rear spoiler, 19" wheels