I have the exact same problem as you to guys! My car is just 5 days old, so i'm a bit dissapointed. The dealer will check things tomorrow. As we speak both midrange speakers in the front doors just stopped working.
I was the first to report this issue to my dealer.
Will followup tomorrow to tell you what my dealer finds out!
13' F21 116d M-sport Valencia orange
x 09' E87 116d M-sport