They seem to be ignoring that it's a Volkswagen Golf GTI altogether, basically actually calling it just a "Volkswagen GTI" (as if there weren't also, or had never been, or couldn't very well be tomorrow, a Polo GTI, a Passat GTI, a Scirocco GTI, etc) -- but they also call the brand by the full (lawyerly) company name. (So what you seem to have thought was the Yank-market version of the model name is actually ze Cherman version of "Inc", "Co", or "Ltd".)
Both are, IMnshO, prime cases of Damn Stupid Nomenclature, but at least the drop-the-actual-model-name thingy is nothing new from the Yank motoring meeja; they used to gabble about "Pontiac Trans Am" and "Pontiac Firebird" as if they were actually different models, pretending the Trans Am wasn't actually just the high-performance variant of the Firebird model of the Pontiac brand, to take just one old example I vividly recall.
Dunno if the other candidates were Ford Motor Company this-and-thats, Toyota Inc Boromobiles, Dr Ing. h. C. F. Porsche Gmbh & Co. KG Caymans, etc, in stead of just Ford this-and-thats, Toyota Boromobiles, Porsche Caymans, and so on, as normal people like you and me would say. Wouldn't surprise me one bit if they were, though.