|  |  | | The naturally aspirated 4.2-liter V8 develops maximum torque of 310 lb ft SAE at 4,100rpm. Again, the spread of torque is an important ingredient in the XK's effortlessly sporty character, and this engine delivers more than 85 percent of maximum torque from 2,000 to 6,000rpm. Yet it still offers fine fuel economy over the outgoing XK8 coupe and low emissions figures, with a drop in CO2 emissions of 6 percent over the previous model*.
The naturally aspirated 4.2-liter V8 XK coupe has a (limited) maximum speed of 155mph and 0-60mph time of 5.9 seconds, plus instant throttle response and broad flexibility across the range. With the new XK's weight savings, the 4.2's standing quarter-mile time of 14.4 seconds is less than half a second off the pace of the previous supercharged Jaguar XKR coupe*.
For the first time in a Jaguar, drivers will be able to use steering wheel-mounted paddles to change gear with the new Jaguar Sequential Shift transmission. In either Drive or Sport Manual modes, very fast shifts are achieved by combining the use of one-touch paddles with an automatic blip of the throttle from the drive-by-wire engine management system during downshifts. Thanks to this positive torque enhancement control, the shifts are faster and more responsive than before, regardless of the mode selected.
Jaguar XK's six-speed ZF transmission introduces a new generation of automatic gearshift for Jaguar, replacing the familiar 'J' gate with the new Jaguar Sequential Shift system with Park, Reverse, Neutral, Drive and Sport modes. The fully automatic Drive mode adapts to individual driving styles, while a Sport Auto mode can also be selected. This offers a more responsive pattern, utilising the automatic blip of the throttle to maintain ultra-smooth shifts.
*Manufacturer provisional test figures
Technology
The all-new Jaguar XK has a completely new braking system, tested extensively over many hundreds of laps at the gruelling Nurburgring test track in Germany where Jaguar has a dedicated research facility. The result is greater braking power and more responsive feedback to the enthusiastic driver. Larger, ventilated discs contribute to better pedal feel, optimum stopping distances and resist fade during extended use. The system also includes four-channel ABS, Electronic Brake Force Distribution, Hydraulic Brake Assist to increase brake pressure during an emergency stop, and Jaguar's Electronic Park Brake function.
Unlike conventional digital ABS systems used on many cars, the all-new Jaguar XK's ABS system can vary the brake pressure at each wheel using analogue valves in the hydraulic control unit. This gives more refinement to the hydraulic pressure control and allows drivers to benefit from increased steering input during heavy braking. The all-new XK's Bosch Servotronic 2 steering is also adapted for a sports car from the XJ sedan, to give easy low-speed manoeuvring with optimum high-speed feedback under all conditions.
The all-new XK also includes a host of other safety features designed to empower rather than overpower the driver. These include a Tire Pressure Monitoring System, run-flat tires, Jaguar's Protec dynamic headrest system to protect against whiplash injuries, Forward Alert which uses the optional Adaptive Cruise Control system's forward-facing sensors to scan the road ahead 10 times every second to warn of a potential collision, and the new switchable TRAC DSC Dynamic Stability Control with Traction Control System.
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