Wagon fans and enthusiasts rejoice! Following in the footsteps of the M2 CS pocket rocket, the hardcore M3 CS and the excellent M4 CS, BMW is adding another track-focused CS model to its portfolio.

BMW M stands for Motorsport; it's the subsidiary that creates the automaker's fastest and most track-focused models. Up until recently, if your BMW had an M on it, you knew it was among the best the ...