The Z3 was developed from the E36 platform of the 3 Series. The resulting platform is sometimes referred to as the E36/7(roadster) or E36/8(coupé). The rear semi-trailing arm suspension from the E30 was used rather than the more sophisticated multilink suspension from the E36. At first, only the 1.9 L M44B19 straight-4 engine was offered, but its 138 hp (103 kW) was not up to buyers’ expectations. Interior appointments too were not up to the standard of other BMW models, and the plastic rear window looked poor compared to the glass unit found on the much less expensive 1999 Mazda MX5.
In the North American market, the inline-4 engine was complemented by a larger straight-6 engine in 1997: the 2.8 L M52B28. This engine, similar to the BMW M52 in the 328i except with an all aluminum block and head, was especially desirable with its 189 hp (141 kW). (more…)