MB Atego 818 L – oxidizing light units

Again and again the same topic, the Mercedes Benz rusts faster than you can drive simply together. With a large number of vehicles oxidize already within the first 24 months the lighting units together only so. The manufacturer Mercedes Benz does not occur in this obvious lack of material. It seems Mercedes Benz is of the opinion that its customers simply have to get used to, that such a vehicle already after 2 years various serious rust damage, whether Aus What experiences do you have to gain in this regard?