I have a 2011 tdi jetta, and to be honest, i feel like it was made like crap, when im driving i hear the back left door panel making a noise almost like a flie stuck between glass, that buzzing noise, but this is when the music is off, i also hear alot of the inside vibrate a little when i hit mildly hard bumps. Ive had this noise since i got the car but it was something that was almost never there, now i hear it all the time. Should i bring it to the dealer and have them check it?