RE: 174mph Speed Pack for Jag XFR
Monday 3rd September 2012
The Jaguar XFR is now available with a Speed Pack option, as has been previously offered on the larger XJ Super Sport. Comprising subtle cosmetic tweaks and a raised speed limiter, it should maintain interest in Jaguar's M5 rival until the XFR-S is revealed, expected before the end of this year.
Subtle visual tweaks but more gears and mphPreviewed at the Moscow motor show last week, the Speed Pack is now capable of 174mph instead of the usual 155mph, and features revised engine calibration (though power remains at 510hp) to accommodate the extra speed potential. Visually, the Speed Pack can be identified over a standard XFR by a small boot spoiler and a new front splitter. These very minor changes should allow the XFR-S to boast even greater visual aggression, as shown in the transformation from XKR to XKR-S.
'Headroom' for XFR-S has been maintainedJaguar is charging £2,750 for the Speed Pack option, so a standard XFR with that box ticked will cost £68,100. This still makes the Speed Pack XFR less than an M5 or Mercedes E63 AMG, leaving headroom for the 550hp XFR-S to rival them on price and outright power when it arrives.
174mph Speed Pack for Jag XFR
Raised limiter just the job for baiting AMGs and Ms on the Autobahn - get that Eurotunnel booked!
Subtle visual tweaks but more gears and mph
As well as the raised speed limiter, the XFR Speed Pack also benefits from the addition of the eight-speed auto rolling out across the JLR product range and stop-start. Jaguar claims this improves fuel consumption by 11 per cent and drops emissions by 8 per cent. For the record, this means 25mpg and 269g/km, if that's what your supersaloon purchases are based upon...
'Headroom' for XFR-S has been maintained
Discussion
Love the Jag as an alternative to the German offerings.
But, this stop start technology really confuses me. Every car I've had with a bit of performance (and especially a turbo) I've let it cool down a bit before turning it off - this includes my current Jag with a 'charger. Does the stop start keep certain things running to ensure the car is allowed to cool down a bit or is it basically the same as turning the car off.
Or have I got this wrong and it's basically an option given to the driver to use the technology if required and they should make the decision if they want it to turn off or not? Still seems a daft thing to offer on performance cars if it's going to potentially do damage or cause early wear if using it.
Or am I just wasting fuel doing this and it only really matters in a turbo car?
But, this stop start technology really confuses me. Every car I've had with a bit of performance (and especially a turbo) I've let it cool down a bit before turning it off - this includes my current Jag with a 'charger. Does the stop start keep certain things running to ensure the car is allowed to cool down a bit or is it basically the same as turning the car off.
Or have I got this wrong and it's basically an option given to the driver to use the technology if required and they should make the decision if they want it to turn off or not? Still seems a daft thing to offer on performance cars if it's going to potentially do damage or cause early wear if using it.
Or am I just wasting fuel doing this and it only really matters in a turbo car?
I can confirm from last week that a regular XFR with the limited removed will do 182mph (vmax box verified).
No need for £2.5+ that jaguar are asking.
Not sure on the 8 speed box too, which is great when driving the car normally but when ones to push on the box can want to hunt in S mode and does feel a little frustrating when using the paddles.
No need for £2.5+ that jaguar are asking.
Not sure on the 8 speed box too, which is great when driving the car normally but when ones to push on the box can want to hunt in S mode and does feel a little frustrating when using the paddles.
Steve_F said:
Love the Jag as an alternative to the German offerings.
But, this stop start technology really confuses me. Every car I've had with a bit of performance (and especially a turbo) I've let it cool down a bit before turning it off - this includes my current Jag with a 'charger. Does the stop start keep certain things running to ensure the car is allowed to cool down a bit or is it basically the same as turning the car off.
Or have I got this wrong and it's basically an option given to the driver to use the technology if required and they should make the decision if they want it to turn off or not? Still seems a daft thing to offer on performance cars if it's going to potentially do damage or cause early wear if using it.
Or am I just wasting fuel doing this and it only really matters in a turbo car?
A supercharger doesn't need cooling after use as it's not driven by the exhaust gasses like a turbo. Even so, I imagine most high-performance turbo engines use water cooling on the turbo bearings, and these are normally designed to continue working after the engine has been switched off. But, this stop start technology really confuses me. Every car I've had with a bit of performance (and especially a turbo) I've let it cool down a bit before turning it off - this includes my current Jag with a 'charger. Does the stop start keep certain things running to ensure the car is allowed to cool down a bit or is it basically the same as turning the car off.
Or have I got this wrong and it's basically an option given to the driver to use the technology if required and they should make the decision if they want it to turn off or not? Still seems a daft thing to offer on performance cars if it's going to potentially do damage or cause early wear if using it.
Or am I just wasting fuel doing this and it only really matters in a turbo car?
BoostMonkey said:
I can confirm from last week that a regular XFR with the limited removed will do 182mph (vmax box verified).
No need for £2.5+ that jaguar are asking.
Not sure on the 8 speed box too, which is great when driving the car normally but when ones to push on the box can want to hunt in S mode and does feel a little frustrating when using the paddles.
You do get a spoiler for that remember...No need for £2.5+ that jaguar are asking.
Not sure on the 8 speed box too, which is great when driving the car normally but when ones to push on the box can want to hunt in S mode and does feel a little frustrating when using the paddles.
As was said, a supercharger doesn't need to be cooled - turbos tend to glow red hot when in hard use but a supercharger stays reasonably chilly in comparison.
Any modern turbocharged car with stop-start will be equipped with some kind of pumped cooling which will still run even with the engine switched off.
Any modern turbocharged car with stop-start will be equipped with some kind of pumped cooling which will still run even with the engine switched off.
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