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[Mechanical] Poor Fuel Consumption (TDV6)
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
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Ukraine 

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Thinking of blanking off the EGR valves too. Whistle Whistle
   
Post #42358817th Feb 2009 3:22 pm
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741hcr
 


Member Since: 12 Apr 2007
Location: Usually in front of the PC
Posts: 175

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Buckingham BlueDiscovery 4

MacLeod 313 wrote:
Mine is an Auto, regularly get 32 to 34 MPG with no modifications. I do tend to drive no more than 60mph ( its cos I am a Artic driver - not used to speed ), but I also use the switchable box alot, tend to change upto 5th or 6th way before the auto would.... Whistle


I just don't get this!?!?!? I know you Artic drivers hone your throttle/gear control skills to perfection to maximise mpg but how can you regularily get 32-34mpg in a D3 Auto when the best I have ever achieved plodding on cruise along the motorway was 24.59mpg (manual calc hence accurate unlike fuel computer on dash). How can the difference be so huge? You're not the only one getting 30+ with an Auto. It's just not fair Big Cry
  
Post #42360617th Feb 2009 4:00 pm
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JMC
 


Member Since: 25 Feb 2006
Location: Aberdeen-Angus. Where the Bull* comes from!
Posts: 6417

Scotland 

Driving style has a lot to do with it, and I'm not just talking about being light footed. Someone who goes through lots of brake pads will ultimately be getting worse MPG than someone who doesn't. Anticipation is the name of the game and long steady journeys (even at 90mph!) will give better mpg than stop/start motoring.
 The older I get, the more I realise that people confuse wrinkles for wisdom Smile
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Post #42360817th Feb 2009 4:04 pm
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741hcr
 


Member Since: 12 Apr 2007
Location: Usually in front of the PC
Posts: 175

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Buckingham BlueDiscovery 4

JMC. That makes total sense but I don't understand how if I set Cruise to 65mph on a clear level(ish) motorway (was an experimental and very boring speed) on a still, dry, cool winter day and cover approx 110 miles, how come I only get 24.59mpg. I'm not complaining (just jealous Rolling Eyes) but the different mpg's between the same standard auto vehicles driven gently simply seems huge. If I shoved it into 6th and reduced to 50mph on cruise then it may improve a bit but not buy 7-9mph which is a 28-34%.

Am I getting a bit too obsessed by this Embarassed
  
Post #42362817th Feb 2009 4:24 pm
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MacLeod 313
 


Member Since: 18 Apr 2008
Location: away
Posts: 10723

Scotland 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

JMC has that spot on TBH, as a Artic driver your driving style does change, and all the economy comes from Anticipation. We read the roads constantly, like yourself probably, but I read them as if I am still pulling an artic. Remembering I drive also for work a maximum of 56mph and when I am in the D3 it seems like I am rushing when I do 70mph.

I tend not to accelerate hard, mainly use the switchable Auto to keep the revs lower and just glide along safely. If I wanted a sports car then I would have brought one, if I wanted top economy I would'nt have purchased a brick with wheels.

Its just driving styles, nobody will be the same. Auto's a hills in cruise control kill MPG, thats the best advice I can give. If you wanna acheive 30 Mpg take it out of cruise anticipate the hill by building up speed graduly and then glide up. Its how I do it Thumbs Up
  
Post #42363217th Feb 2009 4:37 pm
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JMC
 


Member Since: 25 Feb 2006
Location: Aberdeen-Angus. Where the Bull* comes from!
Posts: 6417

Scotland 

741hcr wrote:
Am I getting a bit too obsessed by this Embarassed

Potentially yes!

I started out worrying about the fuel economy but soon realised that it was better to enjoy the car. Having just purchased two new V8's (FFRR & Audi RS4) I've decided to take that mantle to a new level. 8) Laughing
 The older I get, the more I realise that people confuse wrinkles for wisdom Smile
Founder member of Club FFRRV
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Club Walnut Sniffers
 
 
Post #42364417th Feb 2009 4:56 pm
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david monaghan
 


Member Since: 22 Feb 2009
Location: kilwinning
Posts: 19

Scotland 2005 Discovery 3 TDV6 HSE Auto Zermatt SilverDiscovery 3

i have had my tdv6 hse auto for 2 months. best mpg so far is 26.1. the car is nearly 4 years old and sitting at 43000. can i get any better mpg? if i chip it will i get better mpg?
  
Post #42769523rd Feb 2009 11:08 pm
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techchook
 


Member Since: 14 Oct 2008
Location: Melbourne
Posts: 5

Australia 2008 Discovery 3 4.0 V6 Petrol SE Auto Stornoway GreyDiscovery 3

I've got the SE MY08, V6 ULP version... you can imagine my disgust at 20l/100km... (less than 12 mpg or 5.1 km/litre)...
 jas  
Post #43040428th Feb 2009 11:36 am
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Blobby
 


Member Since: 28 Feb 2009
Location: Gloucestershire
Posts: 277

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Baltic BlueDiscovery 4

I was averaging 22.66 mpg (miles divided by fuel in tank) - HSE diesel auto with no mods at all. Had a remap in Jan and the average over past 1238 miles was 25.65 mpg. Not a huge improvement but it helps.
  
Post #43048928th Feb 2009 4:02 pm
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MacLeod 313
 


Member Since: 18 Apr 2008
Location: away
Posts: 10723

Scotland 2006 Discovery 3 TDV6 HSE Auto Zambezi SilverDiscovery 3

My MPG is now coming down FAST Laughing Laughing Laughing

Thats the MTR's, Expo combination, but such sweet mileage - Who cares about MPG Thumbs Up

JUST ENJOY THE D3
  
Post #43057128th Feb 2009 6:45 pm
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bigjohnuk
 


Member Since: 01 Apr 2008
Location: North Wales
Posts: 32

Wales 2006 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Hi Guys,

The best we get running around north wales is about 24-25 MPG. Auot gear box.
  
Post #4339106th Mar 2009 12:10 pm
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grzesiul
 


Member Since: 11 May 2008
Location: UK
Posts: 6403

Poland 2016 Discovery 4 3.0 SDV6 SE Auto Loire BlueDiscovery 4
mpg

firs MPG test fillup took 73 somethin liters... managed to get 485 miles before reserve light came on
if calculated right that gives me around 50+ km per gallon (no computer base 5 seat D3), mixed city, highway traffic jam driving,
pretty good for 2490 something kg of the beast Wink
should be even better once received BAS unit Smile

rgds
grzegorz
  
Post #4347338th Mar 2009 2:22 am
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caverD3
 


Member Since: 02 Jul 2006
Location: Oberon, NSW
Posts: 6922

Australia 2012 Discovery 4 3.0 SDV6 SE Auto Fuji WhiteDiscovery 4

Just had two software upgrades: Transmission and variable turbo vane ones.
Fuel consumption definately better. Very Happy Thumbs Up
 â€œThere are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely games”
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System. 
 
Post #4347408th Mar 2009 3:30 am
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CarlW
 


Member Since: 07 Aug 2005
Location: Lancashire
Posts: 113

United Kingdom 2016 Discovery 4 3.0 TDV6 Landmark LE Auto Waitomo GreyDiscovery 4

I suspect software has alot to do with consumption. I had a D3 between Sept 05 and Jan 08 and I entered every fuel fill in a spreadsheet and tracked MPG for each tank and a cumulative to date. After my 1st service I noticed a drop in MPG, which at the time I put down to the onset of cold weather, however I've recently added a graph to the spreadshet and the drop clearly coinsides with the 1st service - Services are shown by the big red squares. I now suspect that the drop was caused by a LR software upgrade!!

 Disco 4 Landmark
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Disco 3 HSE 2005 - gone
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Post #43696711th Mar 2009 9:21 pm
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DigitalJunior
 


Member Since: 22 Nov 2008
Location: Cumbria
Posts: 4401

United Kingdom 

Get some Black Electricians Tape - Stick it over where it reads MPG and stop worrying and enjoy your D3!

You've bought it, you love it - life's too short.
 SOLD - 23my Range Rover Sport D300 Dynamic SE  
Post #43697611th Mar 2009 9:34 pm
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