2012 Jaguar XJ Sport Pack

he award-winning Jaguar XJ flagship - which combines elegance, drama and sporting prowess - is now available with optional Sport and Speed Packs to further emphasise the performance aspect of its character. With the XJ, Jaguar has created an entirely new template for the luxury performance saloon. The XJ seamlessly blends sporting potential, dynamic driving abilities and luxurious appointments; a class-leading combination that has gathered plaudits worldwide. The Sport and Speed packs further unlock the performance potential of the XJ both aesthetically and dynamically. The Sport Pack - available throughout the XJ range - comprises a number of exterior and interior design options that clearly underline the assertive side of the car's personality. Externally the appearance of the XJ has been made even more dramatic with the addition of aerodynamically optimised changes to the bodywork and an alloy wheel design specific to the Sport Pack. The functional aerodynamic changes of the Sport Pack allow supercharged XJ models to be additionally offered with the Speed Pack, which raises the limited top speed from 155mph (250km/h) to 174mph (280km/h). "A car capable of 174mph must have certain basic attributes - stability, aerodynamics, prodigious power and as little weight as possible. The XJ is blessed with all these qualities in abundance and with the addition of the Speed Pack it becomes an ever more impressive performance saloon." Mike Cross, Chief Engineer, Vehicle Integrity The XJ benefits from superb aerodynamics and Jaguar's innovative lightweight aluminium architecture to offer weight savings of up to 150kg over its competitors. This offers tangible benefits in terms of economy, emissions, driving dynamics, agility and, of course, performance. The Sport Pack is available on nearly all engine variants, including the muscular twin-turbo diesel, market-specific 3.0 V6 petrol and naturally-aspirated 5.0-litre AJ-V8 where it serves to emphasise the sporting character and driver involvement that are core strengths of every XJ model. On supercharged AJ-V8 models, the Sport pack can be combined with the Speed Pack, which raises the electronically limited maximum speed from 155mph (250km/h) to 174mph (280km/h). With such prodigious power already available from the supercharged petrol engines, no increase was necessary to achieve the higher top speed. The only changes necessary were a recalibrated engine management system, reworked software for the innovative virtual instrument display and adjustment to the tyre pressure monitoring system to take into account the heat generated by sustained high-speed motoring.