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Iv gained 10 mpg
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Lrstaylor
 


Member Since: 03 Oct 2018
Location: Kent
Posts: 580

England 2005 Discovery 3 TDV6 HSE Auto Adriatic BlueDiscovery 3
Iv gained 10 mpg

So iv recently blanked off the egrs I found one already blanked off I did the other and removed the flapper as it was still in place all because I was suffering the usual poor performance low down in the rev range, poor mpg down to 19/20 etc. Well after doing all that the car improved but mpg was still bad.......well i had reason to change the battery yesturday and today doing only short trips locally mpg went up to 30 mpg on local roads around town.

Go figure...I'm thinking the car had adapted fuelling to compensate for a failing egr valve cant think of any other reason.

Will report back after a week or so
  
Post #209999515th Nov 2019 10:55 pm
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sutty2006
 


Member Since: 02 Jun 2016
Location: stoke on trent
Posts: 135

United Kingdom 2005 Discovery 3 TDV6 GS Auto Buckingham BlueDiscovery 3

I don’t even get 30 on a run, more like 28 (properly worked out). I think it’s lying lol.
  
Post #209999615th Nov 2019 10:59 pm
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Lrstaylor
 


Member Since: 03 Oct 2018
Location: Kent
Posts: 580

England 2005 Discovery 3 TDV6 HSE Auto Adriatic BlueDiscovery 3

It's all a bit odd I switched the mpg on the dash driving home noticed it at 25.6 mpg by the time I got home it was at 30 mpg and I only covered a few miles locally. Previously to the battery swop it was sitting at 19/20 mpg
  
Post #209999715th Nov 2019 11:03 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72740

Ukraine 

Forget what the trip comp says, the only reliable figure is fuel in vs miles done. I had trip mpg increase by that sort of magnitude just by changing from regular diesel to the super drooper stuff, but real mpg stayed about the same as I usually got. The just another way of the D3 messing with your mind Thumbs Up

PS 30mpg around town & local roads? Reality will be around mid 20s if driven gently, low 20s if not. I’d struggle to get 30mpg cruising at 60mph on long straight & flat motorways, especially when it gets colder.
   
Post #210001116th Nov 2019 6:27 am
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discovery3ski
 


Member Since: 25 Dec 2012
Location: leicester
Posts: 734

United Kingdom 2007 Discovery 3 TDV6 HSE Auto Tonga GreenDiscovery 3

My D3 will give 26 ish around town/ general use. Just climb over 30 on a run. They weigh nearly three tonne. That’s not bad.
 Discovery 3 tdv6 HSE 2007
Alfa GTV CUP
Alfa 156 JTS
Alfa Spider TS
Alfa GT Cloverleaf
Volvo XC70 
 
Post #210001216th Nov 2019 6:41 am
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8043

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

By changing the battery you have inadvertently done a hard reset of all modules and removed any stored fault codes, never a bad thing to do Thumbs Up
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #210001816th Nov 2019 8:47 am
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Bardley
 


Member Since: 02 May 2018
Location: Hertfordshire
Posts: 437

United Kingdom 2011 Discovery 4 3.0 TDV6 HSE Auto Santorini BlackDiscovery 4

DSL wrote:
Forget what the trip comp says, the only reliable figure is fuel in vs miles done. I had trip mpg increase by that sort of magnitude just by changing from regular diesel to the super drooper stuff, but real mpg stayed about the same as I usually got. The just another way of the D3 messing with your mind Thumbs Up

PS 30mpg around town & local roads? Reality will be around mid 20s if driven gently, low 20s if not. I’d struggle to get 30mpg cruising at 60mph on long straight & flat motorways, especially when it gets colder.


Absolutely...
With my CCF variable set to -6% I'm showing 24.9 regularly on varied roads and journeys. That's about right against the proper maths method of filling and calculating it.
 2011 MY D4 HSE
Previously 2001 D2 TD5, 1996 D1 300Tdi, 1985 90 2.2 petrol.
Bikes! KTM, BMW, British, Classics and others.
 
 
Post #210003016th Nov 2019 9:24 am
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Lrstaylor
 


Member Since: 03 Oct 2018
Location: Kent
Posts: 580

England 2005 Discovery 3 TDV6 HSE Auto Adriatic BlueDiscovery 3

I will do a refill versus mileage comparison to get a proper mpg I was just surprised at the read out improving so much as I drove it. I will be fitting a new ea1000 battery today. I know the car a displays not accurate it was just nice to see it going up instead of down for a change.

I'm still thinking it was compensating for failing egr
  
Post #210004516th Nov 2019 10:32 am
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aja4x4
 


Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459

United Kingdom 2005 Discovery 3 TDV6 SE Auto Zambezi SilverDiscovery 3

I once won a bet at work to see who could get the best mpg on a demo car, i smashed everyone elses scores by getting up to 60mph and resetting the dash i then coasted into work doing 60mpg but they will never know Wink
  
Post #210006216th Nov 2019 11:33 am
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