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bellautos
Member Since: 02 Feb 2006
Location: NorthYorkshire
Posts: 2532
  
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| % increase in fuel economy after LR assurance program done. |
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Im collecting some info on a theory im working out regarding fuel economy gain AFTER D4s have had the assurance program done.
Has anyone worked out a figure gain in % and if so what does it show, im more thinking the % gain shown on the instrument cluster.
Or possibiley a % difference between tank to tank calculations V the instrument clusters calculation.
Pete
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 3rd Jun 2010 10:23 pm |
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Winger
Site Moderator
Member Since: 15 Feb 2005
Location: UK
Posts: 3428
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Pete,
I've not noticed any gain in fuel consumption since the assurance programme work. I'd say that there was, to be honest, to difference at all.
Average (actual) stands at around 24.5mpg. The computer shows ~3mpg more than I am actually achieving, and the tank calculation shows that the computer is overestimating the MPG by 11.5-13.5%. The only thing I'd say is that the % overestimation appears to have come down a bit....it reached over 20% on one tank.
By way of comparison, my D3 Auto ran at about 10.5% optimistic and the D3 Manual only about 4%. Average consumption on the former was 25.72 MPG, and the latter 27.66 MPG, both over the period that I owned the vehicles.
The D4 does seem to be improving, and looks to be getting into the same range as the D3 Auto now.
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| 10th Jun 2010 4:58 pm |
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bellautos
Member Since: 02 Feb 2006
Location: NorthYorkshire
Posts: 2532
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Thanks Winger, Is it possibile i can have a copy of your CCF after your LR update. I want to compare some notes from other CCF's, i think we now have an added field related to a % tollarance for the MPG shown on the ipac and im trying to get my head round its why and wherefores.
If poss re send me both, before and after.
Pete
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| 10th Jun 2010 10:07 pm |
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forest172
Member Since: 12 Feb 2010
Location: uk
Posts: 69
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real world it has improved by 1-2mpg, but I think the warmer weather we are now having has effected that. Worked out I get 24mpg on last 3 tanks. Car has 10,000miles on. I only do knocking about, never really long runs Cars:-MY11 Evoque SD4 Pure, MY12 Defender 90 XS & MY08 Evo X RS
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| 11th Jun 2010 1:11 pm |
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sacimiddx
Member Since: 09 Mar 2007
Location: hants
Posts: 2144
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no change Illegitimi Non Carborundum
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| 11th Jun 2010 5:26 pm |
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tomcat404
Member Since: 27 Mar 2011
Location: lancaster
Posts: 120
 
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My disco 4 sdv6 went in at 6k due to the boost flap staying open and little power upto 2k rpm. They fitted a new valve , flap, technical thing and re did the assurance programme.The following day i did a run and acheived 35,9 mpg !!!!!! on country lanes up to Durham  Being very sad I even took a photo for the sceptics.
Have done nearly 13k miles since the end of may and loved every minute.
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| 14th Aug 2011 5:32 pm |
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ukdave104
Member Since: 31 Jul 2007
Location: Stonehaven
Posts: 266
 
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Excuse my ignorance but what is this Assurance Program?
2014.5 Discovery 4 HSE in Corris Grey Metallic - arriving this week.
2011 Range Rover Vogue 4.4 TDV8, now departing
2012 Freelander HSE SD4 Auto - Mrs UkDave104's Toy.
2010 Discovery 4 XS - gone
2008 Discovery 3 HSE - gone
2007 Freelander 2 GS TD4 - gone
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| 15th Aug 2011 6:02 pm |
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tomcat404
Member Since: 27 Mar 2011
Location: lancaster
Posts: 120
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from what I gather and I am usually wrong  my local dealer runs the program to ensure that the engine is performing as required. Also due to the type of mileage I am running( all motorway) they have a running in program followed by a second program for after the first service at 16k miles.
I did notice a good difference in the mpg. however only off the motorway and only running upto about 2-3 rpm?
Pete from Bell autos is the man to ask i'm sure?
nath
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| 15th Aug 2011 6:22 pm |
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Redback
Member Since: 19 Jun 2011
Location: Helensburgh NSW
Posts: 40
 
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I'm interested in this increased fuel economy after the assurance programme is done, we have terible fuel economy from our 2.7l D4, getting anywhere from 13l/100ks(22mpg) not towing to 20l/100ks(12mpg) towing our 1.4ton camper 
Baz. 2011 Discovery 4 TDV6 2.7l
Redback Country Camper Trailer
1973 Kawasaki H2 750 Triple
2002 TTR250 Yamaha
We swear by the Southern Cross to stand truly by each other and fight to defend our rights and liberties.
Peter Lalor
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| 17th Jan 2012 9:20 pm |
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APL
Member Since: 14 Sep 2011
Location: Europe
Posts: 1130
 
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After my Assurance Programme last year my economy improved (2.7 TDV6 D4 manual) and I get 7.1 l/100km on long runs. 2016 Discovery 4 Commercial
2019 Discovery 5 HSE
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| 17th Jan 2012 9:51 pm |
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Redback
Member Since: 19 Jun 2011
Location: Helensburgh NSW
Posts: 40
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APL wrote:After my Assurance Programme last year my economy improved (2.7 TDV6 D4 manual) and I get 7.1 l/100km on long runs.
Have to look into this, see if they do the same here in Australia.
Baz. 2011 Discovery 4 TDV6 2.7l
Redback Country Camper Trailer
1973 Kawasaki H2 750 Triple
2002 TTR250 Yamaha
We swear by the Southern Cross to stand truly by each other and fight to defend our rights and liberties.
Peter Lalor
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| 18th Jan 2012 4:02 am |
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