The second day I picked up my car it let me sit because of a sensor that shut the engine off. The door locks failed twice (BMW now has a fix for the problem). The fuel pump went at 35,000 miles. The sun roof was stuck open twice and they had to download new software to fix it. All this said, this is my third BMW and by far, the most fun to drive.
Acceleration and torque. Handling is very good. The all wheel drive is great.