Buying a performance SUV and choosing the AMG variant over the standard car is a statement of intent, and the GLC 63 S makes that intent very clear. AMG's 4.0-litre V8 bi-turbo produces 510 HP and 700 Nm of torque, which in a compact SUV body makes for a genuinely startling driving experience, with Four-Wheel Drive keeping everything manageable regardless of the conditions. The AMG Performance Exhaust with switchable valves means the driver can dial in how much character the car shows on any given day, while the adaptive air suspension does a convincing job of keeping things composed when you want them to be. Inside, the cabin is trimmed in leather with AMG detailing, and the 64-colour ambient lighting and Burmester surround sound system give it a quality that holds up well against purpose-built luxury rivals. The panoramic sunroof opens the space up generously, Apple CarPlay and Android Auto are both supported, and the AMG Dynamic Select drive modes allow the car to shift convincingly between relaxed daily transport and something considerably more focused. AMG Performance Braking ensures the stopping ability is properly matched to the performance on offer, which at these output figures matters more than it might on a lesser car. As a complete package, this GLC 63 S makes a credible case that you do not need to choose between a practical SUV and a serious performance machine.