Jaguar XKR Coupe (2006) CAR review

Another old engine in a new shell; why should I get excited?

True, both the new XK and now the new XKR use drivetrains largely carried over from the last-generation XK. But there wasn't much wrong with the old engines, and a whole lot right with the new chassis. The extra power of the supercharged XKR - 420bhp versus 300bhp in the XK - gives the halo Jag the chance to show how good it really is. Carmakers are often guilty of charging more for high-performance models than their extra ability justifies. Not in this case - the XKR is the one to have.

The old XKR only had 400bhp…

Changes to the Eaton supercharger and the induction system and the addition of continuously-variable valve timing account for the new R's extra 20bhp, and Jaguar has worked to reduce whine from the supercharger. The 4.2-litre V8 block is unchanged, as is the superb ZF six-speed auto 'box, although you now get paddles behind the wheel for manual shifts.