Car manufacturers have been very reticent about anything related to performance of late (unless it’s to tell us that the exhaust gases from their latest eco-box will save the planet) so its good to see that the boffins at Jaguar have been let out to play at the beach (well, the Bonneville Salt Flats, to be precise).
They took with them the usual holiday toys, but they remembered to pack a nice new Jaguar XFR, with a few mods necessary to run at Bonneville (roll cage, fire extinguishers, etc). They had a little fiddle with the ECU to derestrict it (and yield 600bhp) but, it is claimed, made no further mods apart from adding a spoiler at the back to stop the XFR taking off on the Salt Flats’ wide open spaces.
So what happened? Well, the Jaguar XFR, on standard tyres, achieved a top speed of 225.67 miles per hour. That’s 8mph quicker than the previous Jag record set by an XJ220 back in 1992. And is a quite exceptional performance from a pretty standard car.
We knew the XF was a great car. We had really looked forward to the XFR, which we feel has the looks, power and kudos to take the fight to the M5 and E63. But this is a quite extraordinary performance from a slightly fiddled stock car.
The Press Release with this info said:
Jaguar today announces that during a secret speed trial at the legendary Bonneville Salt Flats in Utah, an XFR prototype recorded a stunning top speed of 225.675mph (363.188km/h), making it the fastest Jaguar ever.
The car – powered by the all-new AJ-V8 Gen III engine – beat Jaguar’s previous speed record of 217.1mph (349.4 km/h) set in the XJ220 in 1992.* Paul Gentilozzi – the owner of Rocketsports Racing who successfully led the Jaguar XKR to five series victories between 2001 and 2006 in the Trans Am series in the USA – drove the car on the record-breaking run.
Running with minor aerodynamic and safety modifications to meet the requirements for a Bonneville run, the 225mph top speed was achieved with additional horsepower liberated by a remapped ECU, a modified air intake and exhaust system and revised supercharger settings. No internal engine components were changed and the six-speed automatic transmission was standard, including the gear ratios.
Mike O’Driscoll, Managing Director, Jaguar Cars said: “The all-new supercharged 510bhp XFR – and XKR – add a thrilling new dimension to the Jaguar line-up. We have sharpened the R models, fine-tuning them to deliver a totally focused experience for driving enthusiasts, with the new AJ-V8 Gen III engines delivering refined power and performance and unmatched efficiency.
“This sharper edge – the quicker steering rack, outstanding grip and stability and improved stopping-power – has been achieved by using advanced Jaguar technologies such as Adaptive Dynamics (the latest in computer-controlled suspension and traction control), a new electronic Active Differential Control and significantly uprated brakes.”
Paul Gentilozzi added: “During my career, I’ve raced worldwide from the southern tip of New Zealand to Le Mans. Along the way, I have been privileged to drive and own so many exciting cars but I’ve never driven one that was as exciting to drive fast as this Jaguar.”
The new XFR – the first XF to carry the ‘R’ badge – defines Jaguar’s most performance-focused models. Powered by an all-new supercharged 5.0-litre V8 engine developing 510PS and 625Nm of torque, the XFR can accelerate from standstill to 60mph in just 4.7 seconds (0-100kph in 4.9 seconds) and is capable of reaching an electronically limited 155mph. More relevant in everyday driving, an excellent indicator of the XFR’s great flexibility is the time it takes to accelerate from 50-70mph – just 1.9 seconds.
High-speed runs have become indelibly etched into the history of the Jaguar marque. Next year marks the 60th anniversary of the Jaguar XK120’s record-breaking 132.6mph run set on 30 May 1949 on a deserted stretch of motorway near Jabbeke in Belgium.
The new XFR demonstrates Jaguar’s commitment to delivering exhilarating performance and outstanding dynamics for the driving enthusiast – the ‘Fast’ part of the Jaguar ethos of designing, engineering and manufacturing ‘Beautiful, Fast Cars’.
Bring on the Jaguar XFR-S!
Jaguar XFR Supercharged Speed Record Video