Search "Unterfahrschutz" (it's totaly wrong word, but the German say it anyway) the english direkt term is "underride guard", so you understand what i mean wat's wrong... Trucks and trailers need a "underride guard", not a sedan... but the German....

Other search terms are "Motorkapselung", "unterer Motorschutz", "Motorgeräuschdämmung" "Geräuschdämmung" etc.