One problem related to coolant leaking has been reported for the 2014 BMW 328. The most recently reported issues are listed below.
Car has gone thru numerous service calls for coolant leak, pressure testing & burnt oil smell & vapor fume coming inside the cab when engine reaches the operating temperature!! makes the car not drivable!! after oil filter housing, cylinder cover & gasket change, there is still a visible burnt oil smoke coming from rear & sides of the engine area, best seen under a flash light after dusk! this is been going on since June 2018 & presently car is in the shop for repair again!!.