Jaguar’s fastest production model since the 1992 XJ220, the XKR-S, has been officially unveiled at Geneva. The modified 5.0-litre AJ-V8 engine produces 542bhp and 502lb ft of torque, enough for 0-60 and 0-100mph acceleration figures of 4.2 and 8.6 seconds (respectively) and a 186mph top speed. The ‘S’ is outwardly different to other XKs by virtue of a rear spoiler, new sills, vents and chin spoiler. Celebrating fifty years of the E-type launch, the XKR-S is likely to cost around £85,000.