If you don't see to which category belong these cars, the competitor on the American market could be, for the :
106 : the MCC Smart which is smaller (soon sold in NY and SF)
206 : the Golf (bigger)
307 : the Golf
406 : the Passat
406 coupé : BMW 3 Ci Series
607 : Audi A6, Chrysler 300M
807 : Chrysler Town and Country