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warren



Member Since: 14 Oct 2009
Location: East Lancs.
Posts: 903

England 2009 Defender 90 Puma 2.4 HT Santorini Black
Winter fuel economy
Anyone else's fuel economy gone downhill since the snow arrived?

I don't think my driving style has changed all that much, it's probably been idling more than normal, and low range has been used every now and again. But most of the time its been empty, so its not been carrying any extra weight.

It went in for a service and got the software upgrade just before the snow arrived too, it wont be anything to do with that will it?

Usually I get at least 300 miles from a tank. Last tank i managed to get about 270. Now its just gone below a quarter of a tank and its only done about 220!

Or could it be the fuel quality? After supping French diesel for the first couple of thousand miles it's run on Shell derv ever since, and its done just over 10k now.

Or could it be something else completely different........

Never noticed any difference with the old Tdi last winter.

W
Post #21876 11th Jan 2010 6:34pm
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mse



Member Since: 06 Apr 2008
Location: UK
Posts: 5035

United Kingdom 2016 Defender 110 Puma 2.2 XS CSW Scotia Grey
My mpg has reduced by about 3/4mpg from 29/30 Mike
Post #21879 11th Jan 2010 7:05pm
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roel



Member Since: 08 Aug 2009
Location: Lelystad
Posts: 2039

Netherlands 2003 Defender 90 Td5 PU Caledonian Blue
Could this be because winter diesel is different from summerdiesel to prevent waxing off the diesel? I believe here in The Netherlands the petrolstations get the winterdiesel from somewhere in October so far enough before the winterseason so that even when you don't drive that much you have already winterdiesel in your car before it gets cold. Roel

1984 90 2.5 na Diesel - RR V8 (1994-2001)
1997 Camel Trophy Discovery 300TDI (2001-2009)
2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts.
2003 90 Td5 (2009-now)
Post #21886 11th Jan 2010 7:32pm
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warren



Member Since: 14 Oct 2009
Location: East Lancs.
Posts: 903

England 2009 Defender 90 Puma 2.4 HT Santorini Black
Cheers for the replies.

I've heard of winter diesel somewhere before, might have been on here.

I'll just see how it goes when the snow dissapears... it'll be a sad time when it does, mind Sad

W
Post #21910 11th Jan 2010 11:58pm
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mse



Member Since: 06 Apr 2008
Location: UK
Posts: 5035

United Kingdom 2016 Defender 110 Puma 2.2 XS CSW Scotia Grey
They do put an additive in the fuel to stop waxing above -15 but they put that in reasonably early

Maybe its the cold starts - the computer increases fueling? Mike
Post #21914 12th Jan 2010 8:15am
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 8027

 2011 Defender 110 Puma 2.4 USW Stornoway Grey
mines dropped to 27/27 from 30/31 i put it down to increased fueling for the cold weather, longer warmup time and the fact i am leaving it idling to try and get some heat into it prior to going out. Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop
Post #21918 12th Jan 2010 9:25am
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K9F



Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
22-23mpg
My fault for being heavily right footed! Dropped the kids off at Burnham On Mud on my way back to Wiltshire after the Christmas Holidays, involved a longish haul on the M5 and M4. Usual economy sits at about 27-29mpg but was astounded that it dropped to about 22. Served me right I suppose. Back up to about 26-28 now in 'Driving Miss Daisy Mode!' If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!
Post #21923 12th Jan 2010 10:46am
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parktag



Member Since: 30 Sep 2008
Location: Brittany
Posts: 366

France 2008 Defender 130 Puma 2.4 HCPU Zermatt Silver
It's funny you've brought up this subject because i was thinking yesterday, how suprised i was at getting the same mileage out of a tank as i was before the snow came. I've pulled out loads of cars and a couple of trucks and even been stuck once myself. I get 550 km for about 65 litres of french supermarket diesel.
Maybe it's because i can't drive as fast as i usually do. 130 crew cab
98 V8 Disco
Post #21933 12th Jan 2010 2:30pm
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K9F



Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
Number Crunching!
Parktag,

I've just done some number crunching and you appear to be getting about 23-24 miles per gallon. By my reckoning if you're saying that is normal it's still 4-5 miles per gallon (about 1.75km per litre) lower than it should be.

Got a little too much time on my hands today and should get out more! Know that already but it is damn cold out there! If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!
Post #21934 12th Jan 2010 2:41pm
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parktag



Member Since: 30 Sep 2008
Location: Brittany
Posts: 366

France 2008 Defender 130 Puma 2.4 HCPU Zermatt Silver
Yes, that's about right for the way i drive(i'm a bit impatient)and it is a 130. Most of my journeys are local back roads and i take the kids to school every day which is only 3km each way so does not warm up properly and i don't do any motorway miles at all.
My point is that i expected to get even less km because of all the low range driving and messing around but it's stayed the same which is fine by me. 130 crew cab
98 V8 Disco
Post #21936 12th Jan 2010 3:38pm
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gtveloce65



Member Since: 10 Nov 2008
Location: West Sussex
Posts: 107

United Kingdom 2008 Defender 110 Puma 2.4 XS CSW Epsom Green
Mine was up around 29 mpg in the summer. Had the tune patch in October and have been getting 28 ish, and 27ish in the snow - again, I put it down to cold starts, short journeys at lower speeds due to the snow, and load on the alternator (heated screens, seats, lights, although I don't imagine they make much difference given the torque the engine produces). I know my old Series 1 was around 10% less economical in the winter...but that only developed 110 ft/lb (when new) and was driving a good old fashioned dynamo 1953 80
1965 Alfa Romeo GT Veloce Sprint
1980 Fiat 124 Spider
2008 110xs
Post #21940 12th Jan 2010 4:58pm
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Niel



Member Since: 14 Sep 2009
Location: Sandton
Posts: 27

South Africa 2009 Defender 110 Puma 2.4 SW Alpine White
Hallo to all from sunny SA. The winter looks like it is a terrible one from what i can tell on the tv news.
I had the tune patch done and my consumption dropped from 10km/l to between 8.2 to 9km/l. I mentioned this to the dealer and he said he will pass my consern onto LR UK. No feed back as yet. Puma 110 sw White
No extras yet.
Post #21965 13th Jan 2010 6:53am
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warren



Member Since: 14 Oct 2009
Location: East Lancs.
Posts: 903

England 2009 Defender 90 Puma 2.4 HT Santorini Black
Just worked out on my last tank I was only getting 21-22mpg! Confused
Post #21997 13th Jan 2010 1:48pm
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Glynparry25



Member Since: 16 Feb 2009
Location: Miserable Midlands
Posts: 3015

Wales 2009 Defender 110 Puma 2.4 XS DCPU Tonga Green
I have finaly pulled my finger out of my @**e and worked out my mileage for the past 6 months and I can confirm that the winter fuel hasn't made a slightest bit of difference- if anything the slower driving through the snow has bumped it up a MPG or two. I drive most of my milage on either big A roads or motorway so average between 20-26mpg per fill up on sunny days and averaging 22-25mpg on these wintery days.

Glyn
Post #22032 13th Jan 2010 8:32pm
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alantd



Member Since: 14 Dec 2008
Location: Northamptonshire
Posts: 1513

United Kingdom 2007 Defender 110 Puma 2.4 XS CSW Tonga Green
Same here. Around 23-25 all year. I've got a snorkel and do a lot of short journeys (barely gets warm). When I do motorway runs I get closer to 27. Towing I lose a couple of mpg. One that started out as a 2.4 TDCi 110 XS
+ New Defender 110 First Edition
Post #22042 13th Jan 2010 9:23pm
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