NHTSA Complaint #11669573 — 2025 BMW X3

My accident on [XXX] with my 2025 BMW X3 VIN [XXX] was avoidable and caused by either failure in design, or in execution in two BMW systems, I'll discuss rear emergency braking here. Pictures and videos (even one of the crash) can be downloaded here: [XXX] . I was driving the car in what I believe to be an assisted parking situation, but the car did not follow the assisted path. I've filled out a safety report on that already. According to page 172 of BMW’s 416 page manual, there is a rear collision mitigation function with audible, visual, and autonomous braking. The system provided no warning of any kind—not audible, visual, or any braking whatsoever to avoid this accident. My husband had installed a trailer hitch on this vehicle. That involved removal of the bumper fascia that houses some sensors that may be involved in rear autonomous braking. However, my husband reports that the fascia was removed and replaced without incident and in exactly the same location as it originally was. We never experienced any error codes of any kind from the vehicle at any time and these sensors were working during parking to note proximity to other vehicles. There is nothing in the owner's manual to indicate any issues with removing the bumper when installing a hitch. The trailer hitch was purchased from [XXX] and they have 2 videos regarding hitch installation on the 2025 BMW X3 and my husband says he installed it consistent with these videos, as well as the PDF from the hitch manufacturer. None note having to readjust the safety system after installation of the hitch. BMW has not specifically claimed that the trailer hitch was involved, but did note that it was installed. They are involved in assessing this accident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)