108.4 hp per liter
mph (electronically limited)
(from Jaguar Press
Release) JAGUAR XFR-S UNVEILED AT THE LOS ANGELES AUTO SHOW
• The XFR-S is
Jaguar's fastest, most powerful and agile sports saloon ever
• The XFR-S builds on the already acclaimed XFR to create an
even more focused product
• Power and torque of the 5.0-litre supercharged V8 have been
increased to 550PS and 680Nm - up 40PS and 55Nm over the XFR,
and with no impact on fuel consumption or emissions
• The XFR-S will sprint from zero to 60mph in 4.4 seconds
(0-100km/h in 4.6 seconds) and on to an electronically limited
top speed of 186mph (300km/h)
• An eight-speed transmission with 'Quickshift' functionality
enables optimal acceleration throughout the speed and rev ranges
• Comprehensive front and rear suspension upgrades maximise
response with lateral stiffness up by 30%
• Electronic active differential and Dynamic Stability Control
systems have also been recalibrated to enhance handling
• New, wider, 20-inch 'Varuna' forged alloy wheels are shod with
bespoke tyres to maximise grip
• Aerodynamic changes, with extensive use of carbon fibre
construction, reduce lift by 68% and give the car an assertive
• Exclusive interior materials include carbon leather and
contrasting highlight micro-piping and stitching
"Sporting character is
evident in all Jaguar saloons. In the XFR-S that character has been
amplified, the result being a truly engaging car with a combination
of technical innovation, assertive design and staggering performance
that will satisfy the most demanding of drivers."
Adrian Hallmark, Global Brand Director, Jaguar
The second model in Jaguar's ultra-high performance R-S range, the
XFR-S joins its XKR-S sibling in the exclusive 300km/h club and is a
vivid expression of Jaguar's longstanding and legendary sports
The XFR-S incorporates engineering features from both the XKR-S and
the all-new F-TYPE two-seater sports car to create the most
driver-focused, agile and responsive iteration of Jaguar's
award-winning XF saloon range. The XFR-S has been developed by
Jaguar Land Rover's specialist ETO division - its bespoke powertrain,
chassis and body enhancements enabling it to push the performance
Electrifying performance is provided by the 5.0-litre supercharged
V8 petrol engine which now boasts 550PS and 680Nm - up 40PS and 55Nm
respectively over its XFR installation. The increases have been
achieved through revisions to the engine management system and
optimisation of the flow of air both into and out of the engine.
Fitted with an eight-speed transmission incorporating Jaguar's 'Quickshift'
technology (developed for the F-TYPE), the increase in engine output
allows the XFR-S to accelerate to 60mph in 4.4 seconds (0-100km/h in
4.6 seconds) and on to an electronically limited top speed of 186mph
Airflow has been carefully managed in order to both allow the engine
to operate at peak efficiency and let the car cleave the air cleanly
and safely. The resulting body changes have created a distinctively
assertive appearance, beginning with the deeper front bumper with
its larger lower air intakes, vertical vanes and carbon fibre front
Deeper sills and unique 'aero-blades' ensure a clean passage of air
along the side of the car and on to the deeper rear bumper sides
while a carbon fibre rear diffuser between the signature quad
tailpipes extends underneath the rear of the XFR-S to reduce lift.
It is aided in this by a bootlid mounted spoiler, two designs being
available. Overall lift is reduced by 68%.
The unique 20-inch lightweight forged alloy 'Varuna' wheels are
wider front and rear and are shod with specially developed Pirelli
rubber, giving the XFR-S a more muscular stance and increasing its
grip and stability. Allied to this are extensive suspension
revisions which serve to increase lateral suspension stiffness by
30% for greater steering precision and responsiveness.
Revisions to both spring rates and the adaptive damper tune increase
the feeling of connectivity with the road surface, providing
confidence-inspiring handling and a supple, controlled ride.
Recalibrated active electronic differential and Dynamic Stability
Control settings allow the enthusiastic driver to make the most of
the huge potential of the XFR-S.
The car's intent is underlined by the technical palette of materials
used on the interior. This includes carbon leather on the seat
bolsters and arm rests and a Dark Aluminium fascia, both of which
are exclusive to the R-S range. Providing a further unique touch are
a choice of contrasting colour stitching and micro-piping which can
be matched to the exterior paint scheme.
"In developing the XFR-S the engineering challenge was to extend the
considerable dynamic abilities common to the entire XF range. The
bespoke chassis, powertrain and body enhancements meet that
challenge and give the XFR-S its focused performance edge."
Andrew Whyman, Chief Programme Engineer, Jaguar XF
The XFR-S features
Jaguar's acclaimed 5.0-litre supercharged V8 petrol engine in its
most potent form matched to an eight-speed transmission with
Quickshift functionality. This all-new combination provides a
visceral blend of vivid acceleration, driver involvement and control
plus entry to the exclusive 300km/h (186mph) club of ultra-high
"The XFR-S is a very harmonious product in the way it looks, the way
it handles and the way the powertrain responds. The car has instant
response to any driver input and as a result feels connected from
Tim Clark, Technical Specialist for Performance and Driveability
The all-aluminium quad-cam engine delivers not only extreme
performance but also tremendous efficiency thanks to the
technologies incorporated into it, including spray-guided direct
injection (SGDI) and dual independent variable cam timing (DIVCT).
The high-pressure die-cast lightweight aluminium block is stiffened
with cast iron liners and cross-bolted main bearing caps, providing
refinement to match its power. The four-valve cylinder heads are
constructed from recycled aluminium, between them sitting the
Roots-type twin vortex supercharger fed by two intercoolers. These
feature their own water-cooling circuit to reduce the temperature of
the pressurised air to optimise power and efficiency.
In order to help liberate the additional 40PS and 55Nm of torque
over the standard XFR, larger front air intakes in the lower bumper
of the XFR-S allow greater volumes of air to be fed into the engine.
The intake system also features a symposer that channels more of the
induction noise into the cabin, adding to the aural excitement of
driving the XFR-S.
The result is a 0-60mph time of 4.4 seconds (0-100km/h in 4.6
seconds) and an electronically-limited top speed of 186mph
The exhaust system has been optimised in order to channel the waste
gases away from the engine with the greatest efficiency. The central
silencer has been replaced with an X-piece and near straight-through
rear pipes combining to provide an enhanced exhaust note with the
added benefit of a motorsport-style crackle on the overrun.
A number of key driveline components have been uprated in order to
both adapt the XFR-S for the greater power and torque outputs and
stiffen the entire drivetrain to make its responses more immediate;
these include uprated driveshafts, a larger central bearing on the
propshaft and a new torque convertor.
This series of changes has allowed Jaguar's engineers to tune the
throttle response to suit the more focused nature of the XFR-S.
Applying learning from the new F-TYPE sports car, the response to
throttle inputs has been made significantly quicker. The end result
is an intimate connection between the driver's right foot and the
engine. Engaging Dynamic Mode increases this still further with a
greater engine response for a given movement of the accelerator
Maximising the benefit
of the engine recalibration is the eight-speed automatic
transmission with Quickshift technology.
Developed for the F-TYPE sports car, Quickshift ideally suits the
XFR-S's focused and involving remit. When the enthusiastic driver
changes up a gear manually by using the steering wheel-mounted
paddles, the Quickshift strategy ensures the quickest, crispest
shifts via rapid and precisely timed engine torque intervention.
When downshifting (either manually or when in Sport mode) the engine
management system automatically blips the throttle to ensure the XFR-S
remains balanced and composed, particularly important on entry to a
corner. This function also allows the transmission to perform
multiple and very rapid downshifts during hard braking.
When operating in automatic mode, the transmission can detect the
manner in which the car is being driven by monitoring acceleration
and braking, cornering forces, throttle and brake pedal activity,
road load and kickdown request. On detecting a more enthusiastic
driving style, the transmission will automatically make the
gearshifts more aggressive and move the shift-up point higher in the
Corner Recognition senses when the car is negotiating a bend, the
transmission holding the correct gear for the exit. The transmission
will also recognise when the car is performing a series of
overtaking manoeuvres requiring rapid changes in throttle position
and, rather than change up, remain in a lower gear ready for the
next demand for acceleration.
The eight-speed transmission also allows the XFR-S to be offered as
standard with Jaguar's Intelligent Stop/Start system. This
automatically shuts down the engine when the car comes to a halt and
the brake pedal is depressed. When the brake is released, the system
will restart the engine in less time than it takes for the driver's
foot to move to the accelerator.
A twin solenoid system, it allows for 'change of mind'
functionality, bringing the engine back up to speed even during its
run-down phase if, for instance, the car is coming to a halt at a
junction and the driver sees an opportunity to join the traffic
"With the XFR we have a
very credible, competitive platform with which to work. What we have
given the XFR-S is greater handling capacity, greater precision and
greater capability. It's a car for driving purists - it will feel
engaging within the first 50 metres but remains accessible and
confidence-inspiring at any speed."
Mike Cross, Chief Engineer, Vehicle Integrity, Jaguar
The dynamic characteristics of the XFR-S were informed by the
engineering development of both the XKR-S and the F-TYPE, the result
being an incredibly agile, responsive and involving super saloon.
Both front and rear suspension systems have been uprated and
carefully tuned over tens of thousands of miles at Jaguar's testing
centre at the legendary Nürburgring, the high-speed bowl at Nardo in
Italy and, of course, the engineers' favourite roads around the
Gaydon Research and Development centre and in north Wales.
Overall lateral suspension stiffness has been increased by 30 per
cent front and rear, with front and rear spring rates increased by
the same amount.
Front suspension knuckles have been revised in line with those found
on the XKR-S to achieve the increased camber and castor stiffness
which, along with new wheel bearings, optimise steering and handling
precision. The steering system has additionally benefited from the
fitment of the valving developed for the F-TYPE.
At the rear a new subframe has enabled revisions to suspension
geometry which, allied to stiffer bushes - new rear knuckles and
working in tandem with the stiffer springs - increase stability and
In order to achieve the maximum benefit from the suspension
revisions, the XFR-S has new lightweight, forged 20-inch 'Varuna'
alloy wheels. These are half an inch wider at the front and an inch
wider at the rear in comparison to the wheels found on the XFR but
their construction means there is no weight penalty to be paid.
The tyres, developed in conjunction with Pirelli exclusively for the
XFR-S, are 10mm wider all round, being 265/35 and 295/30 front/rear.
The difference between the wheel rim and tyre width increases has
the effect of pre-loading the sidewall to improve handling and
steering response without adversely affecting refinement.
Working in harmony with the uprated suspension, wheels and tyres are
revised electronic programmes controlling the Adaptive Dynamics,
active electronic differential and Dynamic Stability Control
Jaguar's Adaptive Dynamics system actively controls vertical body
movement, roll and pitch rates through the use of continuously
variable dampers. The system monitors driver inputs and the road
conditions, adjusting damper rates in response up to 500 times a
second to optimise stability and agility. The driver's selection of
Dynamic Mode offers enhanced body control through moving the damping
rates to the firmer end of the available range.
The Jaguar active electronic differential - which can apply full
locking torque almost instantaneously when necessary - has been
recalibrated in order to exploit the greater grip offered by the
wider rear tyres, the more precisely controlled suspension and the
engine output. Working in parallel with the differential, the 'Trac
DSC' setting of the Dynamic Stability Control system now offers the
enthusiastic driver more opportunity to explore the outer edges of
the handling envelope while nevertheless providing a discreet safety
Providing equal levels of confidence is Jaguar's High Performance
Braking System which offers an unmatched combination of power,
stability and fine modulation. The 380mm front and 376mm rear discs
are internally ventilated for assured repeated stopping power and on
XFR-S benefit from additional cooling provided by under-body air
"The Design Team was
very conscious that it would be the aerodynamic solutions required
to deliver the performance of the XFR-S that would dictate its
aesthetics. This is a concentrated and focused car and the design
revisions and the materials used all reflect that."
Wayne Burgess, Studio Director, Jaguar Design
Reflecting the changes under the skin, the appearance of the XFR-S
has been subtly modified in order to allow the car to achieve its
The new, deeper front bumper incorporates larger lower central and
side air intakes - the former framed in carbon fibre - in order to
provide adequate airflow into the engine bay. Carbon fibre is also
used to form the front splitter at the lower edge of the bumper, the
first of a number of aerodynamic changes designed to smooth the
passage of the car through the air at very high speeds.
The extended side sills and aeroblade mouldings behind the front
wheels serve to create a sharp break-off point between the lower
bodywork and the road surface in order to keep the airflow attached
to the car's sides for as long as possible.
The same thinking dictated the deeper side mouldings behind the rear
wheels. This extended rear bumper also incorporates a central,
carbon fibre diffuser, deeper than the item found on the XFR and
which travels further under the rear of the car to reduce lift.
Rear lift is also reduced through the fitment of a bootlid-mounted
spoiler to manage the airflow off the top rear surface of the car.
Two options are available, both of which have been designed with the
aid of computational fluid dynamics to provide perfectly balanced
aerodynamics. The larger of the two rear wings is constructed with a
carbon fibre aerofoil centre section.
The combined result of the bodywork revisions is a reduction in
overall lift of 68%.
The wider, six-spoke, lightweight Varuna forged alloy wheels provide
the XFR-S with a purposeful, broad shouldered stance and come as
standard with a dual finish. A ceramic polish is applied to the
outer surfaces, its eye-catching appearance contrasting with inner
gloss black areas. As an option the wheels can be supplied in either
full gloss black or technical grey finishes.
The assertive appearance of the XFR-S is further enhanced through
the use of gloss black trim in place of chrome around the grille,
within the side vent, around the front and rear screens, windows and
across the bootlid. The mesh in the front grilles is also a
purposeful gloss black.
XFR-S customers can choose from an exterior palette comprising five
colours: French Racing Blue, Ultimate Black, Stratus Grey, Polaris
White and Italian Racing Red.
This colour palette is complemented inside the XFR-S with Warm
Charcoal leather trim on the seats and doors enhanced through the
use of carbon effect leather. Exclusive to R-S cars, this is used on
the seat bolsters and arm rests and reflects the use of exotic
carbon fibre on the aerodynamic elements of the car. The seats
themselves are embossed with the R-S logo and can be finished with a
choice of contrast colour micro-piping and stitching in either red,
blue or ivory. The same subtle enhancement runs across the top of
the dashboard, the fascia of which is finished in a Dark Aluminium
unique to the R-S, complete with badging.
The XFR-S is fitted as standard with a 380W, 12-speaker
surround-sound system from British audio experts Meridian.
Recognised by audiophiles as a leader in audio reproduction and
fidelity, the system uses digital signal processing to create a
sound field that is second to none. An optional 825W and 18-speaker
system features Meridian's proprietary Trifield System which places
every occupant at the centre of their own perfectly focused