Dinka is the name of an African tribe, however it actually parodies Japanese automaker Honda. Components of Dinka's logo are reminiscent of the letter H which predominates Honda's logo, although Dinka's logo consists of having six brackets (both "]" and "["). Dinka is a play on "dink", a racial slur for Asians, especially the Vietnamese. Dinka is also a play on "dinky", indicating a cheaply constructed small car, as Honda and other Japanese automakers initially produced low-quality econobox cars for export to the North American market in the 1970s, before moving to more upmarket vehicles.
"Dinka" is an implausible Japanese name as the syllable "di" does not exist in native Japanese language words (outside of Nihon-shiki form of romanization of ヂ, which is pronounced "ji" and doesn't occur in words outside of the phenomenon of rendaku).
Dinka is one of two vehicle brands in the HD Universe whose names are based on synonyms for 'small'. The other is Weeny.