XKR fuel consumption

[mph]

Anyone on here running an XKR 5.0 litre, and if so what type of fuel consumption are you getting in everyday driving ?

I've read everything from 15 to 25 mpg as being "normal". Local lady reckons she gets in excess of 25mpg when touring, which sounds optimistic to me.

[Kevrev]

On a recent 140 mile trip on the m4/m50 plus a little town driving before destination with speeds ranging from 65 - 75 on motorways the trip meter showed an overall mpg of 30.1 which is a new pb for the car. The return leg was driven somewhat quicker but still recorded an average of over 27mpg. Short trips can be in the 17 mpg range as can more spirited driving. On track I have seen as low as 6mpg.

[DeadMeat_UK]

Blimey that's a massive difference to the 4.2

I get between 19 and 20 through general running (journeys of 20/30 minutes, country roads)

On a long run I once got to the rarefied heights of 22 !

Maybe I need to upgrade to a 5 in order to save some money, and the planet

[fraserb]

not an XKR but the 5L XFR so same engine; average around 22mpg

[Ubernoober]

OK, for a 4.2 XK - I averaged 27mpg over 7,000 miles (6 months motoring) of mainly dual carriageway / motorway at good motorway speeds (so generally over 70 leptons) but including popping to the shops. 30mpg is (relatively) easily achievable.

The secret is to drive smoothly and to lessen the slow down / speed up traffic following malarchy - that's what drinks the fuel (well, that and spanking it!)

[xkrG]

Ubernoober said:

OK, for a 4.2 XK - I averaged 27mpg over 7,000 miles (6 months motoring) of mainly dual carriageway / motorway at good motorway speeds (so generally over 70 leptons) but including popping to the shops. 30mpg is (relatively) easily achievable.

The secret is to drive smoothly and to lessen the slow down / speed up traffic following malarchy - that's what drinks the fuel (well, that and spanking it!)

So whats the point in owning it ?

I celebrated the milestone of actually taking it out last month and getting 20mpg on a 50 mile trip, it was the first time ever. I average 16-17mpg, 13 on a good run !

[Palmball]

I honestly don't know where some of these mpg figures come from - over 30mpg in a 5.0 XKR must have been driven either downhill with the wind behind it or excruciatingly slowly!

I've owned my XKR from new since November and have averaged 17.5mpg. It does get driven 'properly' and across a mix of town and motorway driving. When doing a bit of enthusiastic B-road or consistent town stop-start driving (both deliver similar results) the economy dips to around 14mpg.

At the other end of the scale, when I've really tried to drive economically I manage to peak at an average 25-27mpg depending on just how slow and / or downhill the route is! Extremely light and occasional throttle us is required to get it into the mid-20's and if thats the kind of driving you enjoy, I can't see the point in buying an XKR.

A few weeks ago I did a 2500 mile European road trip and to say I drove it briskly would be an understatement....I averaged 17mpg across the journey which meant it was pricey motoring, especially in Italy with their current €2/litre fuel prices (and we think we have it bad!)

[DeadMeat_UK]

Ubernoober said:

OK, for a 4.2 XK - I averaged 27mpg over 7,000 miles (6 months motoring) of mainly dual carriageway / motorway at good motorway speeds (so generally over 70 leptons) but including popping to the shops. 30mpg is (relatively) easily achievable.

The secret is to drive smoothly and to lessen the slow down / speed up traffic following malarchy - that's what drinks the fuel (well, that and spanking it!)

I'm pretty good with smoothing and blending on busy roads and motorways and tend so sit back and pootle along behind all the 3 series and Audi carnage.

It's the spanking that does it I think. One good slip road seems to use up about 3 miles of range according to my range-o-mometer thing. Which incidentally used to say 330 miles range when I filled, now 290 something

[stuartmmcfc]

Palmball said:

I honestly don't know where some of these mpg figures come from -

it's probably because they look at the "instant" mpg reading and confuse that with the "average" reading.
I've seen my xkr hit 99 mpg (on the instant reading!)

[JonnyVTEC]

stuartmmcfc said:

it's probably because they look at the "instant" mpg reading and confuse that with the "average" reading.
I've seen my xkr hit 99 mpg (on the instant reading!)

On an X150? Instant fuel consumption?

Nope.

[stuartmmcfc]

JonnyVTEC said:

On an X150? Instant fuel consumption?

Nope.

Do you not get that on a x150??
You do on my X100- looks like jaguar cut costs yet again

[Ubernoober]

xkrG said:

So whats the point in owning it ?

I celebrated the milestone of actually taking it out last month and getting 20mpg on a 50 mile trip, it was the first time ever. I average 16-17mpg, 13 on a good run !

So, I presume you see no 'point' in owning a car other than to get as low an mpg as possible? Which, I suppose, is fair enough if you 'celebrated the milestone of actually taking it out last month' and doing a '50 mile run'.

My XK became my daily driver in March and my daily commute is 100 miles. These next 12 months, my mileage will likely top 25k.

So my point is I have a very nice car, capable of both seriously low mpg and satisfyingly and acceptably high (to my mind and to my bank account) mpg - and I choose to major in the latter, with the occasional transgression into the former.

And no, no instant mpg, but you do have 3 trips avaialable.

[mph]

Ubernoober said:

So my point is I have a very nice car, capable of both seriously low mpg and satisfyingly and acceptably high (to my mind and to my bank account) mpg - and I choose to major in the latter, with the occasional transgression into the former.

And no, no instant mpg, but you do have 3 trips avaialable.

More or less how I would use the car. You didn't say what mpg you are getting though.

[stuartmmcfc]

Ubernoober said:

And no, no instant mpg, but you do have 3 trips avaialable.

only 2 trips on the X100

[Kevrev]

Over the last 5000 miles out of a total of 8500 my overall average is showing 21.4. I simply stated that it is possible to obtain 30mpg on a long even run. I hit the 20s within the first 5 miles of normal driving but it doesnt last long as I just cant resist pressing the go faster pedal. I only fill up with BP Ultimate or other premium fuels which may also contribute plus the car is the speedpack version with different ecu settings to the standard car.

[mph]

Picked the car up this afternoon. Cruising back on the A1 and the some B roads I averaged 24+ mpg.

The weather was so bad that I couldn't do much more than drive steadily anyway, but I'm sure I'm going to enjoy the car.

I didn't buy it for fuel economy and I intend to use the performance when I get the chance, but it's nice to know I can get reasonable consumption to balance things out.

[mr.man]

My 60 plate XKR is four weeks old to me today. Very gently shows 27 mpg, normal without too much loud pedal 22 mpg. BUT. Petrol costs are nothing to worry about when you work out your daily depreciation on the car. At the moment I reckon about £8 grand a year or £21 per day.!!!!

[mph]

mr.man said:

My 60 plate XKR is four weeks old to me today. Very gently shows 27 mpg, normal without too much loud pedal 22 mpg. BUT. Petrol costs are nothing to worry about when you work out your daily depreciation on the car. At the moment I reckon about £8 grand a year or £21 per day.!!!!

I'll be very happy if mine only depreciates at £8k per year. It's a 60 plate too.

[xkrG]

Ubernoober said:

So, I presume you see no 'point' in owning a car other than to get as low an mpg as possible? Which, I suppose, is fair enough if you 'celebrated the milestone of actually taking it out last month' and doing a '50 mile run'.

I was celebrating the 20mpg, which occured a month ago, not the fact i took it out for a drive.
I cover some 50,000 miles a year, luckily I have a 200hp daily driver that gives 32mpg !!! mmmmmm

But the Jag is just for fun, hence I drive it hard and fast.

Each to there own and hats off for using it as a daily driver, personally I would still buy a runabout for the commute and drive the Jag as it deserves to be at the weekends. Check out SOTW for wafting fun cars to do the job for you

[mr.man]

mph said:

mr.man said:

My 60 plate XKR is four weeks old to me today. Very gently shows 27 mpg, normal without too much loud pedal 22 mpg. BUT. Petrol costs are nothing to worry about when you work out your daily depreciation on the car. At the moment I reckon about £8 grand a year or £21 per day.!!!!

I'll be very happy if mine only depreciates at £8k per year. It's a 60 plate too.

I know it's probably closer to £12k - £14k but I don't want to believe it.