According to Mercedes, the new V8 consumes 10 % less fuel thanks to its smaller displacement (3.982 cc versus 4663cc) and
clever cylinder deactivation system.
That big 4.0 - litre V8 engine is fitted with
some clever cylinder deactivation technology that effectively turns off half of the engine when not required, such as when cruising on the motorway.
Weight is saved by aluminium bodywork and a plastic tailgate, and the V8 also features
a clever cylinder deactivation system that turns it into a V4 at cruising speeds.
Not exact matches
Low - mileage drivers will enjoy the 113 and 148bhp 1.0 and 1.5 - litre TSI petrols, the latter of which boasts
clever cylinder -
deactivation technology to help reduce fuel consumption.
As well as a 463bhp peak it features
cylinder deactivation courtesy of
clever valve control, where the inlet and exhaust valves on
cylinders two, three, five and eight stay shut.
Plus, the
clever 148bhp 1.4 TFSI petrol with
cylinder deactivation can return 60.1 mpg and emit only 109g / km of CO2.