No, crashes in the US happen because Americans are shit drivers. They are shit drivers because you get a free driving license with box of cereal. Germany on the other hand has one of the strictest driving tests there is. A German with a driving license has had many hours of instruction from a professional instructor.

In addition, American cars are shit. Lots of poorly maintained and unsafe vehicles on the road with very lax regulation. By contrast, German cars have to pass a very comprehensive yearly safety inspection.