This is the 2015th most frequent Japanese word.
ドイツ
Germany.
ドイツ is used as an adjective to describe something related to Germany, in this case, the cars.
私はドイツの車が好きです。
I like German cars.
ドイツ語 refers to the German language, with ドイツ forming the basis for the term.
彼はドイツ語を勉強しています。
He is studying German.
ドイツ refers to the country Germany as a geographical location.