The most powerful straight-six petrol engine ever to see action in a BMW M car provides the muscle for stunning performance attributes. The newly developed high-revving unit with M TwinPower Turbo technology generates maximum output of 353 kW from its 3.0-litre displacement, together with peak torque von 600 Nm. The version of the bi-turbo unit developed specially for the BMW X3 M Competition and BMW X4 M Competition raises the output figure by 22 kW to 375 kW.