看这个就知道答案了
https://www.tesla.com/en_CA/VehicleSafetyReport

In the 1st quarter, we registered one accident for every 4.19 million miles driven in which drivers had Autopilot engaged. For those driving without Autopilot but with our active safety features, we registered one accident for every 2.05 million miles driven. For those driving without Autopilot and without our active safety features, we registered one accident for every 978 thousand miles driven. By comparison, NHTSA’s most recent data shows that in the United States there is an automobile crash every 484,000 miles.

单纯对比，下降了50%

【 在 GFX 的大作中提到: 】
: Model S 保有量很小，所以基本可以按奔驰c系来对比了。而且large size vs mid size死亡率区别不大。
: Musk那个claim我是有点怀疑的，因为不是fair comparison。使用AP的时候大部分是高速。不使用的时候可能是local。 这个AP vs 人的比较不是这么直观的，要控制很多因素
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