2016 Cooper. 4/16 build. 500 miles. Noticed that the passenger door, or maybe passenger side of dash, rattles at low speed over bumps. Sometimes even on smooth roads, when the B38 is in it's rough stage. Never rattles at higher speeds. It's like a reverb type of rattle. Oh well, off to track it down.

 

Same, but I only hear it on when Im on freeways. Seems to coincide with the bass in the music. It doesnt bother me enough to go down the rabbit hole of taking apart the door and what not, but if I had to drive on the freeway everyday, I might be singing a different tune.