The fact that we rarely if ever see such data sets is a strong data point by itself. Insurance cost (data is widely available) goes down with age and you can e

The fact that we rarely if ever see such data sets is a strong data point by itself. Insurance cost (data is widely available) goes down with age and you can extrapolate from that to safety but it only falls fast initially and the rest is largely a reflection of how driving habits change with age. Occasionally someone like Tesla or Volvo will trot out some cherry picked data that boils down to "yes the very safe demographics who buy our very safe cars die less than the peasants". Other than those two there's not much.