Erratic idle... when stopped at a stop light, car in neutral, the rpms rev in spikes from 500 to 1500, up and down, up and down. The car never resets to a constant idle. Car has been in shop 8 - 9 times over 18 days total. No solution. Tech told me BMW know of problem but has no plans to find a fix.

- Highlands Ranch, CO, USA

There is a problem with the electronic throttle/engine management control module. Whenever accelerating from a stop, the car lunges forward, then stops and goes into a cycle where it does this "bucking" action a few times. The car is 2 years old, but has only done this for the past year. I've attempted to have this repaired by BMW- have been working with them for the last eight (8) months with no result. My family refuses to ride in the car because the jerking motion makes them sick. A BMW field representative knows about the problem but refused to diagnose or repair the problem. I hired an independent mechanic that was able to trace the problem to the electronic throttle control, but does not possess the BMW software or equipment to repair it. Now it has become more and more dangerous to drive because the problem is getting progressively worse. It's is difficult to make left turns at intersections since the car jerks forward and stops. A few times I was almost hit by oncoming traffic due to this.

- Los Angeles, CA, USA

Vehicle stalled while driving at 50 mph. Condition forced consumer to pull vehicle off the road. Unable to restart until 30-60 seconds later. Dealer inspected and fixed the fuel injection. But problem recurred.

- Los Angeles, CA, USA