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The fuel economy on my D4 is shocking!
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Disco3Ben
 


Member Since: 28 Apr 2017
Location: Buckinghamshire
Posts: 790

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Santorini BlackDiscovery 4

NJSS wrote:
Disco3Ben sorry your post doesn't include some vital information.

What, corrected MPG are you getting? Filling very couple of days adds nothing to our understanding of the issues. Are you doing 100 miles a day or 250 miles a day?

How are you calculating this?

Was your D3 manual or auto?

My D4, similar to yours has done 23.9 mpg over 40k miles, my D3 did 25.5 mpg over 86.5k miles. In both cases calculated in a spreadsheet of every fill up, 95%+ of the time "brimmed".

The 1.6 mpg deterioration I put down to auto rather than manual - I have disabled stop/start.

NJSS


I recently did a trip to Cornwall with the family, a trip I have done the same for year.
In the D3 (Auto 2007) I could do the trip in 3/4 tank from full.
In the D4 (2016 Auto) I went through a whole tank and had to fill up on the way.
Same route, same load, same driving - suppose the only thing that could be different is tank capacity, but my wallet tells me the fill ups are costing the same.

so on that back to back comparison I used 1/4 tank more over a 280 mile journey in the D4.

That's what really made me think that something wan't right.

I'm not interested in the D4 going any faster, just wondering if there is a map out there that will keep everything as it is but help a bit with fuel economy.
 2016 D4, Santorini Black
2007 D3, Black - sold. 
 
Post #212729211th Mar 2020 12:47 pm
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Davethegeo
 


Member Since: 01 Oct 2015
Location: Edinburgh
Posts: 636

Scotland 2012 Discovery 4 3.0 SDV6 XS Auto Baltic BlueDiscovery 4

DSL wrote:
Is that 24.4mpg real or trip comp figure?

Real. Courtesy of spreadsheet.
 D1 300Tdi - gone
D2 Td5 ES (Alive remapped...mmm) - sadly gone
D4 SDV6 XS - still shiny

 
 
Post #212731411th Mar 2020 1:35 pm
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ianm27
 


Member Since: 02 Jun 2016
Location: Hertfordshire
Posts: 1421

England 2012 Discovery 4 3.0 SDV6 GS Auto Orkney GreyDiscovery 4

dgardel wrote:
not heavy as the Disco


Del will be happy you think he weighs less than a Disco now Whistle Whistle
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Post #212731611th Mar 2020 1:52 pm
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RogB
 


Member Since: 15 Jun 2018
Location: Mansfield
Posts: 548

United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Orkney GreyDiscovery 4

don't the late model ad blue version have a smaller fuel tank by quite some margin ? to allow for the adblue tank to fit in ?

if so that could be why you see less miles per tank, you have less fuel to start off with?
 2011 D4 facelift - 2014 Style front end, black pack, reverse camera, 4x4 info, timed climate, Bearmach rear ladder, OffTrek Awning
before that FL1x2, FL2x5, D2x1, Evoque1x2 
 
Post #212733211th Mar 2020 3:03 pm
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Pelyma
  


Member Since: 06 Jan 2005
Location: Patching, Sussex
Posts: 15130

England 

dgardel wrote:
Pelyma wrote:
My MY16 D4 was better on fuel than my 06 D3. The Cayenne is about 15% better than the D4.


less weight


Not shaped like a brick either, but offset that with a much better fun pedal from a 4.2 V8 twin turbo Whistle
 DS3 TDV6 HSE - Silver with Alpaca (old one) Gone
DS3 TDV6 HSE- Silver with Alpaca (new one) Gone
D4 HSE Lux - Montalcino Red Gone
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Post #212733711th Mar 2020 3:26 pm
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NJSS
 


Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 8172

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Waitomo GreyDiscovery 4

RogB

There is some uncertainty regarding the amount of usable fuel carried - see this thread:-

https://www.disco3.co.uk/forum/disco-4-fue...l+capacity

Disco3Ben - the only way of gauging fuel consumption reasonably accurately is, IMHO, by brimming the tanks, and keeping meticulous records, probably in a spreadsheet.

NJSS
 Am I "Woke" ? - I neither know nor care.

2016 Discovery 4 Landmark
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric yet.
There are 10 types of people in this world: Those who understand binary, and those who don’t. 
 
Post #212733911th Mar 2020 3:33 pm
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robpenrose
 


Member Since: 12 Jan 2016
Location: Surrey / SW London
Posts: 1764

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Stornoway GreyDiscovery 4

For reference, I do Surrey to Cornwall on about 2/3rd tank and at a decent speed.

However I do find that journey hammers the fuel consumption compared to other journeys. Think it’s all the hills on that route. Best calculate properly and see what’s what Thumbs Up
 

Current: D4 HSE
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Previous: Land Rover Discovery Td5 ES 
 
Post #212735611th Mar 2020 5:34 pm
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Littlewill
 


Member Since: 14 Sep 2015
Location: Lincolnshire
Posts: 484

England 2015 Discovery 4 3.0 TDV6 HSE Auto Firenze RedDiscovery 4

What does everyone think the actual weight decrease would have to be to get better MPG? Obviously I'm not suggesting we all start taking bits off our Discos but on the other hand have you ever lifted a pair of third row boot seats in and out! they must be 120kg at least Embarassed Embarassed!
  
Post #212736911th Mar 2020 6:42 pm
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Disco3Ben
 


Member Since: 28 Apr 2017
Location: Buckinghamshire
Posts: 790

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Santorini BlackDiscovery 4

I'll brim the tank and start to record miles. Thumbs Up
 2016 D4, Santorini Black
2007 D3, Black - sold. 
 
Post #212739811th Mar 2020 9:19 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Travel itch scratching on pause. :-(
Posts: 66297

United Kingdom 

Davethegeo wrote:
DSL wrote:
Is that 24.4mpg real or trip comp figure?

Real. Courtesy of spreadsheet.


Thumbs Up
   
Post #212741111th Mar 2020 9:50 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Travel itch scratching on pause. :-(
Posts: 66297

United Kingdom 

ianm27 wrote:
dgardel wrote:
not heavy as the Disco


Del will be happy you think he weighs less than a Disco now Whistle Whistle


Phew, the diet has worked. Laughing Laughing
   
Post #212741211th Mar 2020 9:51 pm
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LT
 


Member Since: 31 Dec 2005
Location: South West
Posts: 13899

United Kingdom 2016 Discovery 4 3.0 TDV6 Landmark LE Auto Santorini BlackDiscovery 4

Disco3Ben wrote:
I'll brim the tank and start to record miles. Thumbs Up


Or simply download a free fuel consumption app. I’m happy with Road Trip Lite as recommended on this forum many years ago. 👍
 2006 D3 HSE (Original & still the best)-GONE
2010 D4 HSE (A bit bling)-GONE
2014 D4 HSE (Almost too bling)-GONE
2015 D4 HSE (A heated what?)-GONE
2016 D4 Landmark (Written Off)-GONE
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Post #212742311th Mar 2020 10:46 pm
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