Year: 1969-1971

An upgrade in engine size from 1991cc to 2195 gave the 911S a useful 10bhp hike in power to 180bhp. Unlike the 911E, though, the S didn’t gain such an improvement in low-down power and torque, so you had to keep the revs up to get the full benefit of the extra horsepower.

Total 911 Rating:

Capacity: 2195cc
Compression ratio: 9.8:1
Maximum power: 180bhp at 6500rpm
Maximum torque: 199Nm at 5200rpm
Brakes: Front: 282mm discs; rear: 290mm discs
Wheels & Tyres: Front & rear: 15x6J, 185HR
Length: 4163mm
Width: 1610mm
Weight: 1020kg
0-60mph: 6.6 sec
Top speed: 155mph

Year: 2005-2008

As 997 Carrera but with drive to all four wheels via a multi-disc viscous coupling, that transferred between five and 40 percent of traction to the front wheels, as required. 44mm wider at the rear than the Carrera to allow for wider wheels.

Total 911 Rating:

Capacity: 3596cc
Compression ratio: 11.8:1
Maximum power: 325bhp at 6800rpm
Maximum torque: 370Nm at 4250rpm
Brakes: Front: 318mm discs; rear: 299mm discs
Wheels & Tyres: Front: 18x8J, 235/40ZR18. Rear: 18x11J, 295/35ZR18
Length: 4427mm
Width: 1808mm
Weight: 1450kg
0-60mph: 5.1 sec
Top speed: 174mph