It surprises me and doesn’t match my observations, but there at least one element to take into account: weather. There’s a reason the California car is treasured. Snow and the salt used to fight it is really corrosive to cars in Denmark.
BTW, this has changed with many brands about 15 years ago. Cars made until that tend to disappear from traffic due to corrosion. In around 2000, it became common to galvanize the steel bodies of cars.
Renault actually advertised this at the time: "will rust like a fish", with a picture of a car immersed in water. Seems to be legitimate: corrosion problems have become much more rare.
