One problem related to crankcase (pcv) has been reported for the 2012 BMW X5. The most recently reported issues are listed below.
Had to replace water pump at 58,000 miles. Car is spewing exhaust, and acceleration and steering are not functioning properly, likely due to ujoint and/or worn control arm, which I noticed were recalled for other models, but listed as a recall for my car/VIN. Need to reseal crankcase jointing surfaces. Car has 8 recalls listed on kbb, but BMW only has record of 5 recalls. I do not have records of repairs that were done on car before purchase in Nov. Of 2014. Car currently has 69,000 miles and is driving horribly.