BMW M6

Lighter, lower and leaner than its sibling, the V10-engined four-seat coupé is a showcase for BMW's M division and its engineering expertise.

Visually, there are some obvious differences between this and the standard 6-Series. BMW has given it a unique set of alloys and individual detailing, plus a carbon fibre roof. This weighs 45kg less than a steel panel, and helps lower the car's centre of gravity by 60mm compared to a 6-Series.

That's a major asset when it comes to the dynamics, which are further improved with a stiffened front subframe, additional rear strengthening and tuned suspension bushes. This is all aimed at delivering an even more intense driving experience than the M5.

By and large, the M6 succeeds. It feels lighter and more nimble with less weight transfer through corners, and better body control. It's a very exciting car to drive, but the engine dominates the experience. The mighty V10 delivers huge thrust through the mid-range, propelling the M6 along with Ferrari-rivalling acceleration, accompanied by a distinctive engine note. There are still flaws in the package, though. The speed-sensitive steering needs more weight, the M6 jars on bumpy roads, especially if you opt for sport damper settings, and there's too much complexity - who needs 11 gearbox modes?

Nevertheless, BMW will have no trouble shifting 400 per year; deliveries start now and the waiting list is already 12 months long. But to our eyes, that ΂£80,755 price looks steep.