Jaguar XE SV Project 8 takes on Goodwood hill climb - on video

The Project 8 has a downforce-producing adjustable front splitter, a flat underbody, a rear diffuser and carbonfibre bumper, and an adjustable rear wing.

Although the exterior looks broadly similar to the regular XE, it has been extensively reworked: 75% of the bodywork is new, with only the front doors and roof unchanged from the production models. In particular, the front headlights have been moved forward by 14mm to allow for extra cooling and engine work.

The Project 8 is fitted with a bespoke carbonfibre bonnet, which is 3kg lighter than the production version and includes an air extraction duct for extra engine cooling.

The wing panels around the rear wheels have been widened by 55mm to accommodate the 305-width tyres and also to help with the aerodynamics. The revised panels required SVO engineers to also install custom-made rear doors.

The car’s exterior was honed through wind tunnel testing and computational fluid dynamics simulations. Jaguar says it has achieved a 205% reduction in lift in Track mode, with the car producing more than 122kg of downforce at 186mph.

Edwards said the emphasis on aerodynamic performance meant that “form follows function” where the bodywork is concerned. The exterior design was headed by Wayne Burgess, Jaguar’s production studio director, who said he took inspiration from Group B Lancia Delta Integrale rally cars. “It was a homologation special that linked a really powerful engine with all-wheeldrive transmission in a compact saloon body,” he said. “Project 8, for me, is that concept taken to its logical extreme.”

As well as the reworked engine and transmission, the XE SV Project 8’s mechanicals have been heavily reworked to boost performance. It is the first XE to feature an electronic active differential, which works with the Intelligent Drive Dynamics to manage torque delivery to the rear axle of the four-wheel drive system. The transmission has been reworked to deliver about 75% of the power to the rear wheels as standard.

The car features three drive modes: Normal, Dynamic (the default setting) and a new Track mode, which will adjust the engine map, dampers, steering and throttle for optimum performance.

There is double-wishbone front suspension, with an integral-link set-up at the rear, and the front and rear axles have been modified to boost lateral stiffness. Custom knuckles designed by SVO are machined from billet, with silicon nitride ceramic bearings to reduce unsprung mass by 840g. That is the first time that ceramic bearings have appeared on a JLR model.

There are height-adjustable spring platforms with motorsport-style coil springs, with the option of two available ride heights.

Another JLR first is the use of carbon-ceramic brakes, with 400mm front discs and 396mm discs at the rear. The car runs on Michelin Pilot Sport Cup 2 tyres. The wheels measure 9.5x20in at the front and 11x20in at the rear.

The Project 8 will be available in two forms: the ‘normal’ four-seat model and a two-seat Track Pack version. The ‘normal’ one, which features an entirely reworked rear bench, includes front performance seats. The Track Pack edition, meanwhile, gets carbonfibre racing seats with four-point harnesses.

The Track Pack version is 12.2kg lighter and also includes a ‘harness retention hoop’ (in essence, a half rollcage) and a fire extinguisher system.