2007 Jaguar XKR

Friday 30 June – Building on the excellence of the all-new XK introduced in late 2005, Jaguar is proud to unveil its new supercharged sports car.

Like the normally aspirated XK model, the new XKR makes use of its industry-leading aluminium monocoque body structure. In addition, an uprated 420bhp (SAE) supercharged V8 engine and class-leading calibration of its state-of-the-art, six-speed automatic transmission bring it a level of heightened performance.

And the XKR’s powerful statement of intent is emphatically reinforced by enhanced sporting styling cues such as a unique front bumper, aluminium-finish grilles and bonnet louvers; unique 19 and 20-inch alloy wheel designs and a quad-exhaust system add to its overall presence.

The addition of an Eaton supercharger and twin air intakes means the new XKR benefits from a 120bhp (SAE) power increase over the normally aspirated 4.2-litre XK with which it shares its engine configuration. Torque, so essential for instant acceleration at any engine speed, also increases significantly – by 36% over the XK, although the overall weight of the XKR is raised by just 70kg. Consequently the power-to-weight ratio compared to the normally aspirated 4.2-litre XK is an impressive 34% higher.

Jaguar’s Sequential Shift uniquely combines all the speed and involvement of a sequential manual gearbox with the comfort and convenience of a full automatic. Whereas an automated manual gearbox interrupts the flow of torque during the gearchange, the Jaguar’s gearbox maintains the flow of torque throughout the shifting process. This results in gearchanges that are not only quick, but also remarkably smooth. Gearshifts are achieved in less than 600 milliseconds.

To ensure optimum ride and handling the XKR’s springs and dampers are uprated compared to the normally aspirated XK. Because of the inherent strength and stiffness of the chassis, the only significant addition to the XKR’s structure is an additional rear suspension brace mounted between the rear damper towers to accommodate the significant increase in rear spring rate.

New, larger ventilated brake discs at the front ensure higher braking performance for the XKR. The front brake disc diameter has increased from 326mm to 355mm and the thickness from 30mm to 32mm, which not only improves the braking performance but also the system’s resistance to fade.

With prices starting from 67,495 GBP, the XKR ensures customers will enjoy a considerable increase in performance over the normally aspirated XK for a relatively small price premium.

2007 Jaguar XKR Gallery

In Detail

price $	$86 000 USD
engine	V8
position	Front Longitudinal
aspiration	Eaton Supercharger
valvetrain	DOHC, 4 Valves per Cyl w/Variable Inlet Camshaft Timing
displacement	4196 cc / 256.1 in³
bore	86 mm / 3.39 in
stroke	90.3 mm / 3.56 in
compression	9.1:1
power	313.2 kw / 420 bhp @ 6250 rpm
specific output	100.1 bhp per litre
bhp/weight	263.32 bhp per tonne
torque	560 nm / 413.0 ft lbs @ 4000 rpm
redline	6500
body / frame	Riveted and bonded Aluminium
driven wheels	RWD w/Traction & Stability Control
wheel type	Cast Aluminum
front tires	255/35ZR-20 Dunlop SP Sport Maxx
rear tires	285/30ZR-20 Dunlop SP Sport Maxx
front brakes	Vented Discs
f brake size	x 355 mm / x 14.0 in
rear brakes	Discs
r brake size	x 325 mm / x 12.8 in
front wheels	F 50.8 x 22.9 cm / 20 x 9 in
rear wheels	R 50.8 x 25.4 cm / 20 x 10 in
f suspension	Upper Wisbone & Lateral Link w/Coil Springs, Anti-Roll Bar
r suspension	Wisbones w/Coil Springs, Anti-Roll Bar
curb weight	1746 kg / 3850 lbs
wheelbase	2752 mm / 108.3 in
front track	1504 mm / 59.2 in
rear track	1499 mm / 59 in
length	4791 mm / 188.6 in
width	1892 mm / 74.5 in
height	1322 mm / 52.0 in
transmission	6-speed Automatic w/Jaguar Sequential Shift
gear ratios	4.171:1, 2.340:1, 1.521:1, 1.143:1, 0.867:1, 0.691:1, :1
final drive	3.31:1
top speed	~249.4 kph / 155 mph
0 – 60 mph	~4.6 seconds
0 – 100 mph	~11.0 seconds
0 – 1/4 mile	~11.0 seconds
drag	0.341 Cd