NHTSA Complaint #11669131 — 2019 FORD MUSTANG

The 10-speed automatic transmission (10R80) in my 2019 Ford Mustang GT began malfunctioning around 84,000–85,000 miles, displaying a consistent hesitation followed by a sudden jolt during acceleration between 15–30 mph. A Ford dealership confirmed the issue and diagnosed it as an internal leak in the clutch drum assembly, referred to as a “CDF drum internal leak.” The vehicle has not shown any warning lights or dashboard messages, and the symptoms developed gradually before becoming consistent. The malfunction causes the car to unexpectedly lurch forward during normal driving, which poses a safety risk to myself and others, particularly in traffic, at intersections, or when merging. This unpredictable behavior could lead to loss of control or rear-end collisions. The transmission remains installed in the vehicle and is available for inspection upon request; however, will be fixing it soon since it is my only car. To date, the vehicle has only been inspected by the dealership and not by the manufacturer, police, or insurance representatives.