Home » 355HP, 4.7s 2016 BMW X4 M40i Brings SuperTruck Style and Pace from $55k » 2016 BMW X4 M40i 6 2016 BMW X4 M40i 6 Home » 355HP, 4.7s 2016 BMW X4 M40i Brings SuperTruck Style and Pace from $55k » 2016 BMW X4 M40i 6