Germany isn't dumping anything, it's just supplying the demand coming from Eastern Europeans who make lengthy trips there with platform trailers to bring back cheap second hand luxury vehicles that are now longer economically viable there.
I've seen way more BMW X5s and Audi Q7s in Romanian cities than in my time working in Germany and Austria combined. I don't think the Germans came and shoved them down our throats.
Where Germany is at fault is its lack of action after Dieselgate since it decided to protect VW and its executives rather than the health of the EU citizens that are still having their lungs stuffed with diesel particulate from the tens of thousands of TDI engines happily roaming around us.