I backed my 2003 BMW M5 out of the drive way and heard a terrible sound, I attempted to drive the car forward, and the noise got worse. I returned the car to the drive way and put it on jacks and stands to find the noise. I discovered that the rear subframe was broken (I have pictures and will be getting the original parts back for testing) from the mount holding it to the frame. I have researched forums for 1999-2004 BMW 5 series cars and have located 14 more people that have suffered the same fate (is has happened in 528, 540, and M5 models from 1999-2004). The repair is costing me approximately $4000. If this break had occurred at highway speed the drive shaft and differential would have separated and would been free to fly around and cause severe damage to the car and anyone in it.

- Fort Lauderdale, FL, USA

Driving home one evening, I noticed a binding feeling being transmitted through the drive-train, drive-ability did not seem too affected, other than the odd bind being felt. The next morning upon start-up, the car began making a loud, RPM sensitive whining noise. I shut the car off and drove one of my others. When I opened the hood it was obvious that the serpentine belt was not aligned correctly. Through further observation, it was clear that the power steering pump mounts were broken. The broken mounts caused the pump to push forward and not be aligned. The belt was being chewed up in the process. While removing the pump I noticed that the bolts holding it in place were loose. These loose bolts were alarming and could have resulted in the power steering pump loosening even further cause the belt to jump. In my opinion, it is completely unacceptable for this to have happened. The fact that a molded piece of aluminum would fracture and break is alarming, and the loose bolts is even worse. It is very possible that the belt could have jumped (has happened to fellow 540I drivers) which would have resulted in no power steering.

- Reston, VA, USA