on the 5 Series' platform, the  6 Series  is BMW's  grand touring   luxury  sport coupe/convertible (E63/E64). A 2-seater  roadster  and  coupe which succeeded the  Z3 , the  Z4  (E85) has been sold since 2002. BMW X3 SUV (E83) The  X3  (E83), BMW's first  crossover SUV  (called  SAV  or "Sports Activity