After 12 months of ownership I would say the auto-hold is probably the most appreciated unexpected feature of our X3. We both have it on the whole time and only complaint is the need to put it on every time we start the car. Wish we could set it on by default (yes I know it probably can with re-coding). Never had an issue with it. Even with the admittidly very rare reverse parking I have done have left it on. Not concerned about possible increased brake pad because pad changes are covered under the service agreement I have on the car.