Mine is a 2011 335i x-drive with 44k km. To date, only issue has been broken oil cap when new causing smoking engine (changed under warranty and made them clean engine), and warranty upgrade of battery. Other than that, zero mechanical issue. I can live with those minor issues.
2011 335i X-drive sedan 6MT/ BS/ ZSP/ Chestnut brown leather/ tint 35%/20%, Lux H8 V3