Just bought an F15 30D, and noticed when I stop the car and put it in P there is a knocking sound. Can only be heard when outside the car. Any ideas? Thanks
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2014 BMW X5 30D M Sport 7 Seater - Silver (Current)
2014 BMW 640D M Sport Coupe - White (Current)
2016 VW Golf R DSG 5 Door - Red (Current)
2011 BMW 330D M Sport Touring Auto - Silver Grey (Previous)
2011 BMW X5 30D M Sport Silver Grey (Previous)
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