The British automaker if offering details with their new Bentley Continental Supersports Convertible which is the the fastest four-seat cabrio in the world.
Powered by its twin-turbo W12 engine the Bentley Continental Supersports Convertible is able to output 621 bhp (463 kW) @ 6000 rpm and 800 Nm (590lb ft) of torque @ 2000-4500 rpm which means it can accelerate from 0 to 60 mph in just 3.9 seconds and reach a top speed of 202 mph.
Just like all the 2011 Continental models the Supersports Convertible is also able to run on petrol and E85 biofuel or any combination of the two, with a combined fuel consumption figure of 17.0 mpg (16.7 litres / 100km).
At this point the Bentley Continental Supersports Convertible price or market release dates are unknown .
From Bentley press release :
Technical Specification
ENGINE      
Capacity (cc)     5998
Cylinders     W12
Aspiration     Twin-turbocharged
Installation     Front, longitudinal
Construction     Alloy heads and block
Bore/Stroke     84.0/90.2 mm
Compression Ratio       9.0 : 1
Fuel     E85 & 98 (95) RON
Valve gear      Chain-driven DOHC per bank, 4 valves per cylinder, cam phased inlet and outlet
Maximum Power     630PS/621 bhp/463 kW @ 6000 rev/min
Maximum Torque     800 Nm/590 lb ft @ 2000 to 4500 rev/min
 
TRANSMISSION      
Type     Continuous all-wheel drive with 40/60 rear bias torque split & Torsen centre differential
Gearbox      ZF 6-speed ‘Quickshift’ automatic
Ratios      1st: 4.172
      2nd: 2.340
      3rd: 1.521
      4th: 1.143
      5th: 0.867
      6th: 0.691
      Final Drive: 3.52:1 front / 3.52:1 rear
 
PERFORMANCE      
Maximum Speed     202mph (325km/h)
0-60 mph     3.9 seconds
0-100 mph     9.6 seconds
0-100 km/h     4.2 seconds
0-160 km/h     9.5 seconds
 
SUSPENSION      
Front     Four-link double wishbones, anti-roll bar, air springs
Rear     Trapezoidal multi-link, anti-roll bar, air springs
Dampers     Continuous Damping Control with four adjustable settings
 
STEERING      
Type     Rack & pinion, power-assisted, speed-sensitive
Turns lock to lock     2.6
Turning circle     11.4 metres kerb-to-kerb
 
BRAKES      
Front     420 mm diameter carbon/ceramic, vented & cross- drilled
Rear     356 mm diameter carbon/ceramic, vented & cross- drilled
Anti lock     Standard with Electronic Stability Programme (ESP)
      8.1 and Electronic Brake Force Distribution (EBD)
 
BODY & CHASSIS       
Construction     Steel monocoque, 2-door convertible
Length     4804 mm (189.1inches)
Width across mirrors     2194mm (86.4 inches)
Width mirrors folded     1945mm (76.6 inches)
Kerb weight      2395kg (5279lbs)
Height     1388mm (54.6 inches)
Wheelbase     2745mm (108.1 inches)
Front track     1623mm (63.9 inches)
Rear track     1657mm (65.2 inches)
Wheels     20inch x 9.5J 10-spoke Smoked Chrome Alloy
Tyres      275/35×20 Pirelli Ultra High Performance
Fuel tank capacity     90 litres (19.8 gallons/23.8 US gallons)
 
FUEL CONSUMPTION / EMISSIONS
Urban     11.1 mpg (25.5 litres / 100 km)
Extra Urban     24.3 mpg (11.6 litres / 100 km)
Combined      17.0 mpg (16.7 litres / 100km)
EPA Drive Cycle City Driving     TBC
Highway Driving      TBC
Carbon dioxide emissions      388g/km
Emission controls       EU V and US Lev 11

Source: Bentley