One problem related to engine belts and pulleys has been reported for the 2013 BMW X5. The most recently reported issues are listed below.
In July 2018 I was notified by BMW of north America that my car has a recall for idler pulley bolt. Overtime this part can come loose, break and impair steering causing a crash. It has now been over 6 weeks and no remedy has been provided. I have contacted BMW of north America twice and alternate transportation is not provided because too many cars are effected. I drive my 3 small children daily ages 5, 4, and 1. BMW has shown no concern over my personal safety and safety of my 3 small children. I have had nothing but issues since purchasing my car as a cpo vehicle. I have been in and out of the service department for check engine light minimum of 6 times. There is also currently a stop sale for this vehicle. If my car is in the dealership lot they would not be able to sell it, how is it safe for me to drive it? my children and myself are putting ourselves in danger and other on the road daily.