On September 23, 2023, in the late afternoon, the control arm of my Porsche 911 (front driver side) snapped while making a routine stop at a stop sign in a residential neighborhood, driving at approximately 25mph. There was smoke that came from the front driver side wheel as the control arm had snapped and that wheel was being dragged. No warning lamps or error messages were displayed on my vehicle dashboard prior to this malfunction. I gave direction to the dealership for a thorough review of the damage. The shop repairmen indicated that the control arm had snapped along with other components as a result, and they provided an estimated quote for the necessary repairs. However, when I inquired about the possibility of the damage being caused by an external object, the shop foreman was unable to identify any such impact. Seeking a second opinion, I decided to take my car to an independent shop for a more in-depth assessment. Surprisingly, they too were unable to find any evidence of an impact that would have led to the control arm failure. Their theory suggested a potential quality or parts issue as the root cause. Fortunately, there were no injuries as the road was not in heavy use, however at highway speeds this could've caused fatal injuries.
NHTSA ODI 11566408