The Bentley Continental GT Speed is powered by a 616bhp 6.0-litre W12 engine, which blasts the car to 60mph in just 4.0 seconds, while 100mph is reached in 9.0 seconds. Acceleration is aided by a new eight-speed gearbox and reworked engine-management software. The GT Speed' is lowered by 10mm compared with the standard GT, while it also gets a stiffer set-up and upgraded anti-roll bars. The GT Speed sends power to all four wheels, with a 60/40 rear/front bias. Bentley Continental GT Speed will blast from 0-60mph in just 4.0 seconds and on to 205mph Bentley says it has improved overall efficiency by 12%, helping the GT Speed to achieve average economy of 19.5mpg, with CO2 emissions of 338g/km.