The XKR-S is so elegant and so tame, but so fierce when you get in it. Both the XKR-S Coupe and Convertible feature Jaguarâ€™s 5-liter AJ-V8 with 550 horsepower and 502 pound-feet of torque. Thatâ€™s an 8 percent and 9 percent increase,Â respectively, from the performance of the XKR. It darts from zero to 60 mph in 4.2 seconds and shifts power through an automatic 6-speed transmission with steering wheel embedded shifters. An all aluminum body, chassis and engine; a wider and lower bumper intake; and a massive rear wing and carbon fiber diffuser combo add additional performance enhancements to the XKR-S.