The rust problem is totally unacceptable and quite shocking. Rotten metal remains rotten. Where else can there be rust? I'd be very unhappy if I was presented with a new car with this problem. I'd reject it.
Now as far as the overall fit and finish is concerned, the Munich made F30s I have encountered in the UK have a fit and finish second to none, and trust me, I am extremely fussy. I have been through F30s with a tooth comb and was more than satisfied with the car in every way. The car was far superior to comparable Audis and better than my Mercedes C Class 350 CDI Sport saloon. My other car which is a Mk6 Golf GTI, also felt a class below in quality.
I wonder what has gone wrong with the cars the above posters have come across? I'd also be very discouraged.
F30 EBII 330d M-Sport/Red Hippo Hide Heated Chairs/18"/Aluminium Hex+Black Trim/Smart Door Mirrors/Cunning Xenons/Clever Suspenders/Electric Back Help/DAB/HK/New Pro Media/Extra Coded Immobiliser/Ciggy Pack/Booty Net/Memory Cushion for Bony Posterior!/5 Year Service Pack
A TRULY WONDERFUL CAR. Had Baggy Red Hippo Hide Chairs. Fixed at my expense. Mean BMW refused to help