NHTSA Complaint #11711227 — 2015 BMW X3

I am writing to formally report a serious and dangerous safety defect affecting my 2015 BMW X3, which I believe warrants immediate investigation and a recall. Description of the Defect: On multiple occasions, while driving in rainy or wet road conditions, my BMW X3 has suddenly and forcefully reduced speed without any brake pedal input from the driver. The vehicle appears to apply braking on its own, causing abrupt deceleration. This behavior occurs: On wet roads only, while driving straight at steady speed without warning lights or alerts, without driver input and at speeds that pose a high risk of rear-end collision. The sudden and unexpected braking has created an imminent danger to myself, my passengers, and surrounding vehicles, particularly on highways where traffic flow is fast and close. Uncommanded braking under normal driving conditions is a critical safety failure. A driver has no reasonable opportunity to anticipate or correct this behavior, and it places the vehicle at significant risk of being struck from behind. Given the seriousness of this issue, I have requested that BMW: Formally investigate this defect across 2015 BMW X3 (F25) vehicles Determine whether a systemic fault exists involving DSC, ABS, wheel speed sensors, or collision mitigation systems in wet conditions. Issue a recall or safety service action to permanently correct this behavior in order to provide affected owners with a reliable and documented fix. Reason for which I wanted to bring this situation to the NHTSA.GOV attention.