I was looking for the answer to this question. It brought me here, but the closest question was [closed]. The most that I am aware of was when driver Pierre Levegh's race car killed 83 spectators at Le Mans: June 11th, 1955. Was wondering if this was the most or if there might be more. There were 84 deaths in all, including the driver. Technically it could be considered a 2 car accident, as his car launched off of another car. Maybe question should be 2 car accident?