TOP 5 Most powerful sedans

1 HSV GTS-R W1 SV

474kW Old school supercharged V8 pulls off towering figures and big noise working with a four-lobe supercharger within a 6600rpm rev limit. By sheer weight of numbers alone, itíll go down as a great.

2 BENTLEY FLYING SPUR W12

467kW Unique W12 engine configuration is paired with two turbos to deliver torrential torque and effortless charm, although near 2.5-tonne kerb weight dulls the big sedanís initial acceleration.

3 MERCEDES AMG S65

- 463kW If in doubt, add more cylinders seems to have been the mantra with Mercís flagship S-Class. Its 463kW only just outpunches the S63 AMG, but with four more pots and fatter torque.

4 ROLLSROYCE GHOST BLACK

450kW Recently tweaked as part of the Black series aimed at younger buyers, you can thank BMW for the effortless urge of the 6.6-litre twin-turbo V12 beneath the imposing bonnet of the imperiously rapid Ghost.

5 BMW 760Li xDRIVE

448kW The Bee Em flagshipís 6.6-litre V12 is the same as that in the Roller (inexplicably with two less kilowatts). Set to hit our shores soon, the AWD 760 hits 0-100km/h in 3.7sec.