I had something similar on S5... I got to say it really is a good design as it can stop the car when it senses the obstacle in front of you, or vehicle braking fast etc... Sometimes i got distracted and looked down only to notice that a guy in front of me stopped to make a turn... The car would just stop on it's own.
2013 Audi //RS5 Phantom Black Current
2009 e92 ///M3 Jerez Black<~~Sold
2009 Audi //S5 Phantom Black<~~Sold
2002 e46 ///M3 Carbon Black <~~Sold
2007 Audi //RS4 Dolphin Gray<~~Sold