does 230 kmhr in the Jaguar XKR-S on the Buddh International Circuit in India. The XKR-S is the fastest production sports car Jaguar has ever built. The Jaguar XKR-S is powered by a 5.0-litre supercharged V8 engine producing 550 PS of power and 680 Nm of torque. 0 - 100 kmph comes up in 4.4 seconds, while the top speed is 300 kmph.