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Tim in Scotland

Member Since: 12 Mar 2006
Location: All at sea
Posts: 875

snappa wrote:
The Disco is bigger and probably heavier though

I don't think there are too many 2.8 tonne Freelanders around, even if they are tricked up with every extra they couldn't reach the base D3's unladen weight. F2 also has considerably less frontal area so the drag is less How can carbon have a footprint, it has no feet?
Now driving - RRE Coupe Dynamic Lux Auto with Plus pack, Fuji White, Ebony, SD4 with tow pack
Gone - 2010MY FFRR TDv8 Stornoway and Ivory, Privacy - the pace of a TDv8 RRS, the incomparable grace of a Range Rover
Gone but will be missed- RRS Tdv8 HSE Stornoway Grey with Ebony Leather
Gone (only a little missed) RRS Tdv6 2.7SE Giverny Green/Aspen
Defender 90 County HT in Epsom Green

13th Sep 2008 2:28 pm

avtur

Member Since: 11 Nov 2006
Location: Stockport
Posts: 1306

2007 Freelander 2 TD4 GS Manual Stornoway Grey

stormsky wrote:
Has anyone manually calculated their mpg to cross check the trip computer? I've often found on many cars the accuracy to be only marginal at best.

Just wondering what I can really expect to see.

As mentioned by NP I'm the forum anorak !! I have 42,000 miles of records to refer to. I have been surprised how accurate the computer appears to be. My experience is that its good for 0.2 - 0.3 mpg against full to full calculations. Probably the only rider I should add is that comparisons have always been over at least 300 miles or more. Stornoway Grey GS ... What a fine motor

... but not any more ...

... psst look at my gallery!
Company cars ... a thing of the past - May 2013.

13th Sep 2008 4:16 pm

npinks

Member Since: 28 Jun 2007
Location: Ls25
Posts: 20090

said so Former Mod/Member, with the most post & Chicken George Arch nemesis

13th Sep 2008 4:59 pm

Chris B

Member Since: 23 Jul 2008
Location: North Yorkshire
Posts: 440

I am seeing a bit more difference between fill-to-fill and trip computer. Just over 5400 miles done and 10 tank fills have given me an overall average of 40.2 (all miles divided by all fuel used) and the average of the 10 trip computer readings is 41.9.

Looking at each fill, the difference from trip computer does vary and that may be something to do with the tolerance that fuel pumps are allowed to have (they can dispense less than they read!). I leave the nozzle right in and after it clicks off, pull the trigger 5 more times. If I could always use the same pump it would help.

Closest was 0.57 mpg and worst was 2.88 - trip computer always showing more economical that calculated.

Can't complain though, I got 629 miles from the last tankful and was showing 24 miles left. Despite that I still got 67.68 L into a nominal 68 litre tank.

Cheers
Chris Gone... 2013 XS TD4 Manual Firenze Red
Gone... 2008 (09MY) XS Td4 Manual Stornaway Grey
Prior... 2003 G4 Discovery 2, 1998 Disco 1 and 1997 Disco 1 Company car before that
Also gone in Nov'13, after 7.5 yrs, to new owners with time for more TLC - 1980 Series III 88
Current 2015 Discovery Sport HSE 2.0

15th Sep 2008 4:06 pm

flycop2000

Member Since: 16 Jul 2008
Location: Scotland
Posts: 282

2012 Freelander 2 TD4 GS Manual Stornoway Grey

Just checked my mpg today. 481 miles using 59.81 litres, ave 36.5mpg. I hope things improve? just added some Millers treatment.

15th Sep 2008 4:29 pm

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