BMW usually fixes all of the issues....problem is some of these issues are software related and thus require firmware updates which can take a few hours to complete... dealers don't normally opt for an update unless you insist or the problem is pretty bad...

and because they're sofltware related they seem to appear/disappear on their own, oftentimes when you take it in for inspection/repair...(and since they don't notice a problem right away they don't do anything..)

other than that I believe there's been one official recall which I believe was a leaking fluid tank cap design...

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2012 X5 50i M-Sport
2014 X3 35i M-Sport