2014 Geneva Motor Show LIVE: Mercedes-Benz S65 AMG image

The S 65 AMG is, as usual, the top of the range for the S Class sedan, and although it was unveiled online back in November 2013 and went on for public debuts at the LA Auto Show and Tokyo Motor Show, in Europe we had to wait for Geneva to see it.

As is always the case with even the most performance worthy Mercedes cars, the exterior styling is still very serious and restrained – even though it can easily smoke many lesser sports cars.

The beating heart that drives the S 65 AMG is a true beast, the twin-turbo V12 6.0-liter engine boasting no less than 630 hp at 4,800 to 5,400 rpm and a maximum torque of 1,000 Nm (737 lb-ft) between 2,300 and 4,300 rpm.

The 7G-TRONIC seven-speed automatic transmission is in charge of power delivery, taking the S 65 AMG to 100 km/h in 4.3 seconds, before reaching the usual electronically-limited top speed of 250 km/h.

Mercedes-Benz says its new range topping performance sedan is the “world’s most fuel-efficient V12 high-performance saloon in terms of power and torque,” as its fuel consumption is rather restrained at 11.9 liters/100 km – the CO2 is of 279 g/km if anyone wants to know.