From crankcase to engine management, the engine under the bonnet of the new BMW X6 M50i has been the recipient of sweeping change. The V8 develops maximum output of 390 kW/530 hp from its 4.4-litre displacement between 5,500 and 6,000 rpm. Meanwhile, peak torque of 750 Nm (553 lb-ft) is served up all the way from 1,800 to 4,600 rpm. The instantaneous and sustained serving of full power fits the performance profile for M engines like a glove. That an M power unit will be backed by a suitable aural accompaniment goes without saying. The flap-controlled M Sport exhaust system fitted as standard produces an exhilarating soundtrack to match the engine's prodigious power delivery. The eight-cylinder unit's standout features include the pair of twin-scroll turbochargers nestled in the 90-degree angle between the two banks of cylinders.
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