general problems of the 2014 BMW X3

I am filing a safety complaint regarding a catastrophic timing chain failure on my 2014 BMW X3 xdrive28i equipped with the n20 engine. While driving, the timing chain and oil pump drive chain failed without warning. This is a well-documented defect on BMW n20/n26 engines that has been the subject of extended warranties and numerous consumer complaints. This failure can cause sudden engine seizure, immediate loss of power steering and braking assist, and creates a serious risk of crash while the vehicle is in motion. BMW issued an extended limited parts warranty for this exact defect (timing chain and oil pump drive chain), acknowledging a manufacturing defect. However, BMW is refusing to cover my repair even though this is a known safety issue affecting thousands of vehicles. The vehicle had been properly maintained, and there were no warning signs before the failure. I purchased the vehicle in October 2021, and this defect occurred during normal use commuting to work. The cost of repair is extremely high due to the internal engine damage caused by the timing chain defect. This is not normal wear and tear. This is a known design/manufacturing defect that BMW has been aware of for years. Also, when I purchased this vehicle, the headlights, and taillights on the hatchback were not working. I had brought this up to the dealership they replaced the headlights, but did not address the tail lights. I am requesting that NHTSA investigate this defect further, and the tail lights as these failures create a significant safety hazard for drivers and other vehicles on the road.

The high beams on the car malfunctioned. The sheathing material on the wires is supposedly “soy based” and breaks down with heat and time. When the wire insulation breaks down beyond a certain point, it will crumble off of the wires, leading to exposed wires, which may touch each other, and cause certain functions of the headlamp to fail. If the headlamp fails while driving at night, vision may be impaired, or completely impossible. The issue likely affects almost every BMW produced from ~2007, to at least 2014. The vehicle was never taken into a shop, or dealership for the issue, as it was repaired by the owner, instead of being replaced. The vehicle was never inspected by the manufacturer, police, insurance representatives, or others. The “lamp faulty” malfunction message would appear on the dash when the adaptive function was activated, the high beams also did not work, but there was no error code present for this issue without the use of a code scanner. One of the codes present when using a code scanner implied that there was a short circuit inside of the headlamp, causing certain functions to cease operation.

During replacement of the xenon headlamp bulbs on the vehicle I noticed that all the vinyl wire covering material had become brittle and cracked off most of the copper wire in side both the headlamp assemblies. The now exposed bare wiring posses potential fire hazzards and also loss of lighting at night. I believe that the oem headlamp supplier supplied out of spec wire and should remedy this potentialy dangerous life safety situation.