A truly great M car is a difficult thing to capture. Not even BMW seems to know how to do it consistently. There are many good M cars—the E46 M3 CSL, the F90 M5 CS—and some whatever ones. But the highs are the ones we all remember, revered as some of the best that any automaker has ever produced.
The thing you need to understand about most M cars is that they are not sports cars. They’re incredibly fast and unbelievably grippy, but they’re also comfortable and livable as daily drivers. The M mandate has always been to make a motorsport-inspired BMW, not an all-out sports car. So when M can go nuts and build a true sporting tool, it builds something like the new M2 CS.