BMW 328I year 1999. I have had vehicle inspected by a reputable technician who informed me that my car has problem with rear sub-fram seperation and cracking. He mentioned this is a dangerous issue, which could cause the vehcile to lose control. He also mentioned that this year and model have ongoing problem. After additional research on web, there are hundreds, if not thousands of complaints on the same problem with same model year(s) 1999-2002 3 series BMW cars. I have over 200 names myself, of logged complaints on a BMW blog site. Here is my complaint to the NHTSA at about 112K miles I noticed a creaking noise coming from the rear suspension. Upon inspection, the drivers side rear differential mount has multiple stress fractures and seperations at the point where the mount is welded to the uni-body. This vehicle has had all required maint. Inspections at normal intervals. This car is driven on the highway 90% of the time and the rest in residential streets. It is a family car and has had no modifications period. The car was pruchased with a bmwna cpo warranty that has since expired. The dealership refuses to cover any repair costs ( estimated at >3000 dollars) bmwna has ignored repeated requests from owners to fix this dangerous condition. In fact, BMW germany has known about this problem and covers the cost of repairs, they even have a method of repair. This situation is very dangerous and requires immediate attention. The suspension should never seperate from the body because of torsional forces from the trans/diff. It is clear that this is a design flaw. I personally have a list of over 100 names with documented subframe cracking/failure of the E46 body years 1999-2000. The overwhelming majority of these have subframe damage at the same rear drivers side diff mount, in other words, out of four possible failure points, the rear drivers side is nearly always the failure point !! please I implore the NHTSA to address this issue now.

- North Hills, CA, USA

2000 BMW 328I has cracked and torn rear subframe under normal driving conditions. Vehicle is completely factory original with all services up to date. If left un-repaired, vehicle is a serious safety hazard.

- Merrimac, MA, USA

Rear subframe torn away from chassis causing noisy and misaligned suspension parts and a definite safety concern for complete failure. Common enough problem that there are more than 100 websites detailing it. Time for a recall before someone gets hurt.

- Saskatoon, Sk, 00, USA

Subframe problem the sheet metal of the car rips driver side.

- North Bergen, NJ, USA

(1) in everyday driving, I heard a creaking noise in the rear end of my 1999 BMW 328I. (2) I found that the left rear subframe has started to shear away from the chassis making the car only drivable for only short distances, if at all. (3) I brought it to the dealer to see if they would cover the cost of repair as a goodwill gesture and they said no. I then appealed to BMW North America and they sent out a body technician who also denied the repair. The car was approx. One year and 10000 miles over warranty. No parts were replaced nor any repairs made. This is a defect in the workmanship of the car and it is documented on the web forum www.bimmer.roadfly.org.

- Topsfield, MA, USA

Under normal driving I started to hear and feel a 'clunk' type noise when engaging the car into gear. Took the car to my mechanic to inspect and he found some cracks in the rear subframe along with the differential mounts being pratically torn off.

- Allen , TX, USA

BMW frame failures are becoming more prevalent in the E46 body style (3 series). BMW in germany appears to be actively fixing cars. Here in the us, however, BMW na appears to be doing nothing but ignoring the problem. Posted below is just one of many posts over the past few years regarding the failure of the rear subframe mounts on the E46. (please note that it is occuring to other BMW models as well.) bimmer.roadfly.org/BMW/forums/E46/5633750-1.html could you please start an investigation into why BMW ag (hq in germany) is repairing/recalling these cars, yet nothing is being done here? thank you.

- Bedford, TX, USA

The subframe ripped out from under the vehicle while driving. Vehicle was then driven to the dealership. The rear tires separated from the body of the vehicle, and only were attached by the shocks and rear axle. Dealership indicated that the factory didn't reinforce the unibody to the subframe, which caused this failure to occur.

- Bend, OR, USA

Differential mounts to frame have 'torn away' @ 40K miles and a second time @ 60K00miles. BMW is fixing it a 2nd time and covering cost. Car is 4door, manual and otherwise has been the perfect car. Estimated time to fix at BMW is 4-5 weeks.

- West Roxbury, MA, USA