Jaguar XKR-S

The standard XKR is already a superb driving appliance, and the S gains firmer springs, dampers and anti-roll bars, steering is 10 per cent quicker and the ride height has been lowered by 10mm. It also gets race-bred brake calipers that not only improve stopping power but also reduce unsprung mass.

Styling tweaks include newly designed forged alloys that allow the fitment of yet-wider Pirelli P-Zero tyres on the rear. The package is topped off with a fairly discreet body kit which cuts drag by three percent, but makes major improvements to stability above 150 mph: lift at the front falls by 60 per cent, that at the back by 20 per cent.

On the road, the car has such built-in precision and body control that it’s a major surprise to discover that it rides well, too. The impressive structural rigidity, and aluminium construction, make the car very quiet over bumps.

The ride is firm, but beautifully controlled. Few keen drivers will be bothered by the relatively small comfort compromises needed to reap such benefits in steering feel, cornering grip and handling.

So, should I buy one?

If you can afford the relatively modest supplement over the standard XKR, don’t delay. Jaguar is making only 200 of these all-black models, and most are already sold. But the recipe is so good we’d be astonished if it didn’t give birth to a future crop of driver-focussed Jags.