I had various squeaking / noises from car - was in a couple of times, and a few adjustments were made to various door trims and rear parcel shelf which seemed to cure it.
Windows going down and up tend to squeak due to the design of the seals. They tend to do a fix under warranty when you raise it, but it usually only lasts 6 or so months.
Also had squeaking from drivers seat and passenger seat if occupied, drivers seat was replaced, however I was still getting noises, and I traced it to the seats hitting the centre console when someone sits in them and leans a certain way. I put a cloth between the seat and centre console and sound immediately stopped. Car going in to see if seats need adjusted to realign them in car, however I suspect its a design flaw given the dimensions.
Great cars to drive but interior quality is not up to German auto standards...will come I'm sure