Same issue here!
2014 X1 xDrive28i ~ approx. 1600 miles on the odometer now.
but actually started hearing the noise approx. 1 weeks into owning the car.
It appears to me the rattle noise is coming from the "area" around passenger side air vent.
__________________
2014 F10 M5
| 2014 E84 X1 xDrive28i ~GONE~
2007 E92 335i ~GONE~ | 2011 E89 Z4 sDrive35is ~GONE~ | 2010 E90 335i ~GONE~ | 2007 E85 M Roadster ~GONE~ | 2003 E46 330xi ~GONE~
|