The Mercedes CLS 63 AMG adds a healthy dose of performance to one of most desirable saloons money can buy. Beauty has its price, and the 2013 Mercedes-Benz CLS-Class is a prime example. There's no doubt the CLS has a presence about it. Its stretched, sleek and athletic stance basically invented the "four-door coupe" body style in 2006. The CLS63 AMG gets a twin-turbo 5.5-liter V8 that sends 518 hp and 700Nm of torque to the rear wheels through a specialized seven-speed automatic transmission. And in conjunction with the AMG Performance package, these figures increase to 550 hp and 800Nm. It's an extremely capable car, and the 5.5-litre twin-turbo V8 under the bonnet attempts to mix a dynamic drive with relative frugality. The CLS 63 AMG truly is truly breathtaking piece of machinery, as it has the handling to back up the engine's straight-line performance. For its lucky driver, the CLS63 AMG makes an even bigger impression. This is a rocket of a vehicle, easily capable of shoving its driver and three friends into the backs of its cushy, leather-lined sport seats. There’s little to no turbo lag from the 5.5-liter, bi-turbocharged V-8, only a broad, seemingly never-ending level of power. It’s one of the few cars that has the starship performance to match its starship looks.