And first impressions are, frankly, jerky. This car has a really funny clutch that makes every medium-pace up-change a head- nodding irritation. I got so annoyed with it that I started thinking the car would be better as an auto. But if you let the car take care of gearchanging that would make it more of a cruiser and that in turn would expose the serious failings of the ride. This dynamic shortfall is joined by the steering, which seems to get inexplicably quicker at a point in the rack where you don't need or want it, making for a festival of driving irritation.

It's not all bad news, though, because the 4.4-litre V8 is a gem, drowning you in torque and a cracking Bryn Terfel bellow every time you clog it. In many cars, an engine of this quality and character would smother other failings yet in the 6-series it's not enough.

Later I took it for a thrash around Surrey and discovered that, at maximum attack, it's much more fun. But if you want a BMW coupe that really comes alive when you cane it, why not save a few quid and buy an M3?

Surely this car should be more the lounge lizard, the car that feels good even at lower speed? All the time I was driving the 645i I kept seeing Jaguar XKs, looking at the driver and thinking, I bet they're having a nicer time than me.