The GT V8 version of the Continental GT has a twin-turbo 4-litre (3,993cc) V8 engine (developed jointly with Audi) that produces and of torque. The car is capable of reaching a top speed of 192 mph (309 km/h). It also features Cylinder deactivation technology that can deactivate half of the cylinders when they're not needed to improve fuel economy by up to 8%. Other changes, including on-demand steering assistance, weight reduction, better engine heat management, overrun alternator charging and eco-tyres, improve overall fuel consumption by 40% from the W12's 17.1 mpg to the V8's 26.1 mpg.