How good or bad it behaves depends on how close the donor specs were compared to your original vehicle. As VIN's don't match the mileage from donor cluster is not copied to LCM.

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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