These are just a few of the XKR-S convertible's vital statistics. Powered by the most advanced version of Jaguar's supercharged 5.0-litre V8 engine, it's the most potent drop-top Jaguar has ever built and was devised with the intent of providing its driver with as much roof-down reward on the track as it delivers on the road - a goal achieved with ease courtesy of its inherently rigid all-aluminium construction.