F30 / F31 / F32 / F33 / F34 / F36 (2012 - current)
I got my new 2012 328i sedan about three weeks ago. This is my first Bimmer. So I am not familiar with the sound of the engine. After the second day, I noticed the engine made a strange tapping/rattling noise when idling. It's not a really loud noise, but you can hear it from inside the car. It...