Then again the very same powertrain for example on E6x with kidney active shutters they are closed 98% of the time. There is no point driving cold winter air in the engine bay and it even makes the aerodynamics slightly better to guide the air on the streamline.

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E39 530dA -02 M-Sport Messing metallic
E53 X5 3.0dA -06 Sport Stratus grey
E70 X5 40d -12 M-Sport Space grey