Why car safety is not advertise as its main quality?
Tesla suffered its first fatal accident in self-driving mode after driving 130 million ml, while the average mileage between fatal accidents in the US is 90 million ml. This is presented as evidence of the safety of Tesla.
However, the safety of cars of different classes of security has 1000 times difference.
Kia Rio has one fatal accident at about 10 million ml, and Subaru Legacy has less than one per billion km (in fact zero).
The latest data on the risks of different car models is here: http://www.iihs.org/iihs/topics/driver-death-rates
I did some calculations based on presented data and typical car driving 20 000 ml a year assumption.
Dodge Caravan has the risk of a fatal accident on a 1 to 10 billion miles. (I saw it in similar sheet before.)
These cars are 3-5 times more expensive than the Kia, and due to the greater mass, strength and quality provides great security.
Why car safety is not advertise as its main quality?
I think there's a major selection effect when safety comes into play; that is, there is a sizable fraction of drivers who do prioritize safety, they buy the cars that are reputed to be safest, and then those cars appear even safer in the statistics. (For example, there are some engineering differences about the Subaru compared to other cars, but the differences between Subaru drivers and the drivers of other cars are probably larger.)
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