One problem related to brakes failed has been reported for the 2012 BMW 335. The most recently reported issues are listed below.
My 2012 BMW 335i couple m sport package (automatic) engine stalls randomly (5 times since purchasing the car in November of 2013). As a result, the power steering fails and power brake assist also fails. Resulting in some scary situations indeed. This typically happens between 5-40 mph. Engine typically restarts after 10-15 min. The last time this has happened was on 5/21/14 at around 9am pst. I was stranded on CA highway 85. Vehicle has only 7k miles. No engine fault codes register when taken to dealership and they send me back telling me that the car is safe to drive. . Read more...