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Home > Technical > can you re-calibrate MPG reading. it reads LOW!

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riverblanche

Member Since: 11 Jun 2011
Location: Retford'ish
Posts: 1134

can you re-calibrate MPG reading. it reads LOW!

Hi,

usually expect an average mpg reading to read HIGH and make you feel better

but

have now done three fills to tank full and worked the MPG out on what has actually been used and the average fuel reading is nearly 20% out reading to low is there anyway to reset the something

first fill computer said 21.7 over 400 miles real figure was 25.7
second fill computer said 22.6 over 748 miles real figure 26.2
third fill coming back from a weekend in Edinburgh computer 26.2 did 250 miles filled back up and 30.2

I am happy with fuel consumption but would rather the reading be right or even better over read then I can kid myself that it really is economical

Tue Apr 15 2014 11:08pm

jimbg

Member Since: 29 Jan 2013
Location: By the River Dart
Posts: 1740

2013 Range Rover Sport SDV6 HSE Orkney Grey

This is not a US/UK gallon problem is it?

Is there a setting for fuel units?

Unfortunately my Sport has a different software so cannot check for you. 2023 P440e SE Dynamic on order -cancelled

2022 HSE Dynamic P400e

2017 Discovery 3.0 HSE Silicon Silver Nimbus interior and a few extra toys SOLD

2013 HSE Black, Orkney Grey, Ebony Seats and Ivory Interior SOLD

2006 HSE

Plus a few other cars inbetween!

Wed Apr 16 2014 9:37am

riverblanche

Member Since: 11 Jun 2011
Location: Retford'ish
Posts: 1134

Hi,
not thought about that one

will have a look and see what the units are set as ?

Wed Apr 16 2014 9:43pm

jimbg

Member Since: 29 Jan 2013
Location: By the River Dart
Posts: 1740

Was that the problem? 2023 P440e SE Dynamic on order -cancelled

2022 HSE Dynamic P400e

2017 Discovery 3.0 HSE Silicon Silver Nimbus interior and a few extra toys SOLD

2013 HSE Black, Orkney Grey, Ebony Seats and Ivory Interior SOLD

2006 HSE

Plus a few other cars inbetween!

Thu Apr 17 2014 6:47pm

aljo

Member Since: 13 Jun 2006
Location: West Sussex
Posts: 3243

2011 Range Rover Sport 3.0 TDV6 HSE Santorini Black

It can be adjusted in the vehicle ccf using faultmate , not sure if an IID tool can do it or not , there is a post on the disco3 forum about this

Thu Apr 17 2014 10:58pm

riverblanche

Member Since: 11 Jun 2011
Location: Retford'ish
Posts: 1134

Hi,
have checked the options in the screen settings and I don't have the option of US mpg

can have MPG or KM/l or another one think it was per 100km or something, either way it was set on the MPG
although did the conversion to US and that would have got the figure very near my actual

so it may have to wait till the car needs something else looking at before being checked any further

at least I can think I am getting 30mpg all the time

Sat Apr 19 2014 10:50am

Disco_Mikey

Member Since: 08 Apr 2012
Location: Dundee, Scotland
Posts: 4335

2010 Range Rover Sport Supercharged HSE Santorini Black

aljo wrote:
It can be adjusted in the vehicle ccf using faultmate , not sure if an IID tool can do it or not , there is a post on the disco3 forum about this

It can be done on the later (2010>on MY's) cars, but didn't think it could be done on the early ones. There is no option to adjust the consumption figures on the Faultmate for D3's...

Sat Apr 19 2014 12:04pm

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