It's rather expensive, at £75,000, but it should also prove rather good. It has more power than either the M2 or the M2 Competition - some 444bhp, in fact, which is good for 0-62mph in 4.0 seconds dead and a top speed of 174 mph.
It is finer, sharper, keener - though no lighter than standard - and could just give the top spec Porsche 718 Cayman a good scrap.
But just how good is it? Let's see what it's like on British roads.