BMW developed new model structures when it introduced the 4-series. Even numbers are coupes; odd numbers, sedans. Even the sporty M models are being forced to toe the new line. After four generations, the M3 coupe has become the M4 coupe. That made room for a new M3, this time in the shape of a sedan.<br />Drive it! is taking a closer look at just this sedan. <br /><br />More cars on: http://www.dw.de/program/drive-it/s-9690-9798
