The BMW M2 CS demonstrates that you can indeed have a jolly old time driving a car, but still emerge from it unconvinced. It costs a little more than £75,000 and over and above the excellent M2 Competition, cheaper by £23,000, you get a little more power, forged wheels, lots of carbon fibre (though no weight saving), a slightly lower ride height with reworked suspension and adaptive dampers (an M2 first), plus some manmade suede trim inside but, irritatingly, no armrest.