NHTSA Complaint #11715820 — 2022 BMW 540I

While turning my 2022 BMW 540i onto a busy, 50 MPH road, the vehicle suffered a catastrophic drivetrain failure, without any physical trauma such as encountering a curb or pothole. The car experienced a total and immediate loss of motive power (propulsion), leaving me coasting in live traffic. This created an extreme safety hazard as I was unable to accelerate or maintain speed to clear the roadway safely. The failure occurred immediately after a significant temperature stress: taken from a heated garage, driven with no issue for 40 minutes, then parked in 15 degree weather for two hours, then complete failure within moments of starting up after the two hour cold parking block. My reading since the incident reveals that BMW quietly switched a critical drivetrain part from a composite/plastic material to metal in later 2022 production runs, due to temperature tress failures precisely as I experienced. This 'silent fix' suggests a known design defect in early 2022 models that poses a recurring risk of sudden propulsion loss. BMW did not do a recall for this, but they should have: I and other drivers were in real danger when my car spontaneously lost all motive ability in high speed traffic.