The turbo engine can trace its ancestry back to the old air-cooled units and is directly related not only to the 996 GT3 but also the GT1 racer (3.2 litres and 600bhp!).

Subaru is reportedly working on its next-generation of engines, and, apparently, there’s a new 1.5-litre and 1.8-litre direct-injected turbo set to replace the existing 2.0L engine and 2.5L units.

The Renault Megane RS, with it’s 2.0-litre turbo four-cylinder engine producing 184kW and 340Nm, and the epic Porsche 911 GT3 RS 4.0, with its 4.0-litre flat-six engine producing 368kW and 460Nm.