Our Fleet: Jaguar XF 2.2-litre diesel

20/05/2012

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Our Fleet: Jaguar XF 2.2-litre diesel
Jaguar

May 2012

BIK List Price
£30,765
BIK Percentage
22%
CO2
149g/km
Combined MPG
52

Review

Regular readers of the Jaguar XF updates will know that the car has performed significantly worse than expected for fuel consumption.

Typical fuel consumption according to the trip computer was around the 40-42mpg mark, which is more than 20% adrift of the official combined fuel consumption figure of 52.3mpg.
What made matters slightly worse is the accuracy of the trip computer. While it was showing higher than 40mpg, actual fuel consumption calculated from brim to brim suggested 37-38mpg was being achieved.

I decided to take drastic action to see if the official 52.3mpg could be achieved.

However, we are well aware that the official combined fuel consumption figure is derived in a test far removed from day-to-day driving, and the combined figure itself is merely a calculation – an average of the urban and extra urban figures.

But other cars we have tried seem to fare much better in relation to the official figures. For example, the Mercedes-Benz E220 CDI automatic regularly achieves more than 50mpg, closer to its official 57.6mpg.

It’s also frustrating knowing that the XF is using the same eight-speed automatic transmission produced by ZF and supplied to BMW for the latest generation of cars. Obviously BMW sets the class benchmark in many of its sectors for fuel consumption.

It would be disappointing for any driver claiming a mileage rate, and potentially frustrating when funding their private mileage, if they’ve chosen the Jaguar because of the new four-cylinder engine only to find its fuel economy is below expectations.

I drove on a whole tank of diesel with the gearbox in winter mode. To improve safety and performance in icy conditions the gearbox usually starts in second gear to avoid wheelspin when pulling away, and changes up through the gears at lower rpm.

One of the side effects of this mode is lower fuel consumption, and on a long run to Gatwick airport the trip computer showed as much as 54mpg, although for the whole trip settled on 50mpg.

Success, but I can’t help feeling there would have been an even better result in another car.
We will continue to experiment during the Jaguar’s last month with us and hope for more improvements.

Top Speed
140mph
VED band
Fuel Type
Diesel
Residual Value
3 Year 60k : £12,475
4 Years 80k : £9,375
Running Cost (ppm)
3 Year 60k : 48.14
4 Years 80k : 45.16

Driver Notes

  • Fuel costs

    At an average of 39mpg I’m currently 13.3mpg below Jaguar’s official figure – underperforming by 25%. At a cost of £6.50 per gallon, that’s leaving me light by £15 on an average weekly journey of 350 miles - £780 over the course of a year.

  • Engine

    This is a very refined engine, well suited to its eight-speed auto box; at motorway speeds it’s barely audible. With ample torque at 2,000rpm, the XF is very responsive.

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Comments (3)

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jeff highfield - 106 weeks ago

Jaguar XF horrendous fuel consumption
With constant issues with my new xf, the average consumption is 27mpg, this week it managed to do 29 miles with 3 gallons of diesel 8.8mpg for a 2.2 diesel, stratstone say impossible but i have been tracking fuel for 6 weeks with a fill up policy to ensure its accurate and with petrol receipts and photos they dont agree. Jaguar are getting it wednesday but i doubt if they will resolve
would be happy for a story if you would oblige, you can have all the data and photos to verify

john white - 102 weeks ago

@jeff highfield - Jeff are you really getting 27mpg how are you getting this much out of your xf. i am only getting 25mpg around town at the moment. quite a lot less than 42mpg quoted by jag.

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GrumpyOldMen - 131 weeks ago

If the XF aircon is as good as my XJ's, does it make much difference to mpg if you switch the aircon off? No, I know you wouldn't in real life but the test is rigged that way. Can't expect EU bods to be better at science than they are at economics.

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