While my wife was driving our 2020 BMW X7M under normal conditions, the vehicle experienced a catastrophic drivetrain and differential failure. According to the BMW dealershipas service manager, internal drivetrain components became disconnected while the vehicle was in motion. This caused parts to spin freely and damage surrounding systems. Fortunately, no crash occurred, but the technician emphasized that it could have easily led to an accident. There was no external impact, accident, or driver error. Both the BMW dealership and an independent insurance adjuster from GEICO confirmed the failure appeared to be mechanical and internal in nature, possibly due to a manufacturing defect. This failure poses a significant safety risk to occupants and other drivers. Had it occurred at higher speeds or in traffic, the consequences could have been severe. I believe this incident warrants investigation due to potential systemic safety concerns. I am requesting that NHTSA review this failure for manufacturer defects and evaluate whether similar complaints exist regarding drivetrain integrity in BMW X7M models. Supporting documentation, including video evidence, dealership notes, and the insurance report, are available via this link [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)