Combi Switch Function. BMW 3 (E36) 318 is. BMW 3 Convertible (E36) M3 3.0. BMW 3 Convertible (E36) 1994-03-01 - 1999-11-30 318 i Convertible 1796ccm 85kW 115HP (Petrol). BMW Z3 Coupe (E36) 2001-06-01 - 2003-06-30 M Coupe 3246ccm 239kW 325HP (Petrol).