The New Porsche 911 GT3 RS 4.0

His is the new Porsche 911 GT3 RS 4.0, a 493bhp race car for the road. Think of it as the ultimate 911 – it brings together the brilliant chassis of the GT3 RS, the lightweight secrets learnt on the GT2 RS, and the stonking 4.0-litre six cylinder engine that powers the GT3 RSR racer.

Despite fitting a bigger engine into the arse, the GT3 RS 4.0 tips the scales at 1360kg, ten kilos less than the 3.8. Thank the carbonfibre bonnet from the GT2 RS, plus the standard-fit carbon front wings (an option on the GT2 RS), plus the plastic rear windows and aluminium doors skins carried over from the GT3 RS.

Mix the lot and you get 362bhp/tonne (GT3 RS: 324bhp/tonne , 458 Italia: 407bhp/tonne). Porsche also says the GT3 RS 4.0 will crack 0-124mph in under twelve seconds, and get around the Nürburgring-Nordschleife in 7 minutes and 27 seconds – the 119bhp more powerful GT2 RS
Porsche's active engine mount system also features.

The fabric door pulls from Porsche’s other RS cars remain, there are carbonfibre sill strips, a strip of carbon across the dash, and ‘RS 4.0’ logos.