The M2 has been circuit-honed over the M235i with a wider track that measures the same as that on the M3 and M4, a more rigid steel bodyshell, 19-inch alloys and lightweight suspension. Driven in anger, the performance is magnificent – and the engine sounds awesome as well, as it propels the car from 0-62mph in 4.3sec. Copious low-down muscle makes for exhilarating corner exits, the rear diff is master of the driven wheels and the auto is superb. An optional package increases the top speed from a limited 155mph to 168mph.