There's a million hidden variables here that could explain the difference:

- The mechanical state of the car (Teslas with autopilot tend to be new/newish vehicles, and thus in excellent mechanical shape)

- The age and competence of the driver - I'm guessing people who make enough to buy a Tesla are usually not senile 80 years olds or irresponsile 18 year olds

- Other security gizmos in Teslas that cheaper cars may lack

Overall, it would be more fair to compare against cars of similar age and at similar price point.