Owned mine from new (2007) currently 82,000 miles with FBMWSH. Still drives perfectly. Had a few warranty things done over the years but nothing major.
Also had an Evolve remap for the last 3 years :-) and no problems with that either!
Tempted by an M135i though ;-)
Current: AW F20 M135i :-)
Past Masters: E90 335i with Evolve / Honda Accord Type R / Prelude VTI / Prelude 2.2 Vtec