[rtkwe]

> “the lowest probability of injury of all cars the safety agency has ever tested.”

NHTSA is taking issue with how the results are being framed. The ratings are only valid across classes in some cases and for stuff like front impact rating the numbers are only valid for cars with very similar weights, Tesla is using the numbers to say they have the lowest probability across all cars. See [0] page 7 for the original letter, the NHTSA has very specific guidelines for what their numbers actually mean and how they can't be compared in all cases across different vehicles, Tesla has violated those by comparing their score to all vehicles which definitely includes vehicles outside the +/- 250 lbs weight difference the NHTSA feels is appropriate.

[0] https://www.plainsite.org/documents/fnrhg/tesla-nhtsa-foia-r... (still reading but see bottom of page 3 and top of page 4 and the NHTSA letter on page 7)

edit: To expand having read more they specifically say that in a collision between vehicles of different classes the numbers become largely meaningless and that the larger vehicle like an SUV will have the lower probability of injury compared to the smaller vehicle.