Citroen's DS4 Racing Concept

The engine is a 1.6-litre turbo petrol unit producing 256 bhp, which calculates to a very impressive 160 bhp per liter.

The DS4 Racing gets a wider track front and rear and has been lowered 35 mm with different suspension, 4-piston-caliper 380mm disc brakes, and larger diameter 19-inch wheels and 235/40 tyres.