Volkswagen is a German multinational automotive brand name, used as a noun to refer to the company or its vehicles. The word blends “Volk” (people) with “Wagen” (car), meaning “people’s car.” In English, it’s treated as a proper noun with the initial stress on the first syllable, and the second syllable is clearly enunciated as -swah-gen. It’s a closed compound borrowed from German branding and pronounced with non-English phonotactics.
Full pronunciation guide