Just to share with you all, for E90, it does come with retrofit auto-fold side mirror kit, but it will set you back by SGD$2500 (around MYR$5700). PML told me they had done that for several owners, so far so good. I am pending them to feedback for my E46 cost. The other day I went to Taiwan, their E46 also comes with auto-fold. Too bad our BMW dealer in M'sia and S'pore does not bring in as std features.