BMW M550i (2017) E43 AMG Killer?. The new 2017 BMW M550i xDrive is the first BMW 5 Series M Performance model to be powered by a petrol engine, namely a specifically modified M Performance TwinPower Turbo eight-cylinder unit with a displacement of 4.4 litres. The V8 is equipped with two twin-scroll turbochargers and features the High Precision Injection direct injection system, Valvetronic fully variable valve timing and Double-VANOS variable camshaft control. This all adds up to an output of 462 horsepower (340 kW) at 5,500 rpm and peak torque of 650 Nm (479 lb‑ft) that can be summoned from just 1,800 rpm.
The state-of-the-art, high-performance engine comes with all the dynamic credentials expected of a BMW M Performance Automobile, propelling the BMW M550i xDrive from 0 to 100 km/h (62 mph) in 4.0 seconds, then on to an electronically limited top speed of 250 km/h (155 mph). At the same time, the new V8 engine also demonstrates the exceptional efficiency of the M Performance TwinPower Turbo technology. The new BMW M550i xDrive already complies with the exacting EU6 emissions standard.
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