IllustrationOn XXX, I was driving northbound on US-101 from [XXX] to [XXX] to pick up a family member for an appointment. The vehicle had been operating normally at freeway speed. As traffic slowed for a construction zone near Summerland, I intentionally reduced speed to approximately 20 mph. At that point, I heard a sudden abnormal rotatio…
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On XXX, I was driving northbound on US-101 from [XXX] to [XXX] to pick up a family member for an appointment. The vehicle had been operating normally at freeway speed. As traffic slowed for a construction zone near Summerland, I intentionally reduced speed to approximately 20 mph. At that point, I heard a sudden abnormal rotational mechanical noise from the engine compartment, best described as a flapping or rubbing sound. The noise had not been present earlier during the drive. Within moments, the engine lost power and shut down. The vehicle lost propulsion while in traffic, and power steering assist was lost after the engine stopped. I was able to safely maneuver the vehicle off the roadway. The engine would not restart. Before this incident, I did not observe any meaningful warning of an impending catastrophic engine failure. I did not observe an engine overheating warning, an oil-pressure warning, or any other dashboard warning indicating an imminent engine seizure. Before purchasing the vehicle, and during my ownership, I used Ross-Tech VCDS (Audi/VW-specific diagnostic software) as part of proactive maintenance and monitoring. Nothing identified an impending catastrophic engine failure. The vehicle was transported to an independent European repair facility for inspection. The shop determined that the engine is mechanically seized and advised that the precise initiating cause cannot be determined without engine disassembly. An Audi dealership likewise indicated that additional manufacturer-level diagnostic procedures would be required. A case was created, and Audi declined assistance. I am submitting this complaint because the engine failed suddenly during normal operation without a meaningful advance warning, resulting in an immediate loss of propulsion in traffic. I believe this type of unexpected catastrophic engine failure presents a potential safety concern if it occurs while the vehicle is being operated on a public roadway. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5