Exactly one year after the introduction of the updated XKR, Jaguar is returning to the Geneva Motor Show with its most potent mass production car ever, the new XKR-S which comes with an uprated supercharged V8 engine, overhauled suspension and new aerodynamic enhancements. The XKR-S is fitted with modified version of Jahuar's 5.0-liter supercharged V8 producing 550-horses and 680Nm (501 lb-ft)