X5 M is a high performance version of casual BMW X5 model. M version was created for the X5 F15 model, that was introduced in 2015, with an amazing 4.4 L V8 575 hp (423 kW) engine (engine is called as the most powerful engine that BMW all-wheel model ever had) and for the E70 model (is being produced since 2010) with V8 M TwinPoer Turbo 563 (414 kW) engine.