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Bill

Member Since: 18 Nov 2017
Location: Essex / Normandy
Posts: 1165

Fuel efficiency

Often see questions about fuel efficiency

As I just had two trips, both quite different I thought I would post the result from the app

Diesel. 4.4L SDV8

1st in U.K. half the route restricted to 50 mph camera control

2nd TRIP hammering along in France as late & exceeded the 80mph speed limit maybe 100mph at times . Average doesn’t show that high a speed.
Covid lapse . Just remembered last 25 miles of the French trip was a diversion off the motorway hence the average speed dropped.

I have shown you mine, now show me yours!

Filters are in fact so good that in certain circumstances, when the ambient air is already polluted, a diesel car will tend to extract more particles from the air than it emits. Emissions Analytics worked with........etc etc

He who dies with the most toys wins...

Last edited by Bill on 18th Jul 2022 1:08pm. Edited 1 time in total

18th Jul 2022 9:48am

Chalky

Member Since: 10 Feb 2018
Location: Marshfield, Bath
Posts: 890

Bill

If you use an app like "Road Trip" it will be far more accurate because you input the figures yourself. The readout on the car is usually about 3-4 mpg optimistic!!

My car averages 32mpg across all types of journey (mostly short under 10 mile journeys), according to the car but the app shows an average of 29.8mpg. That's a D300MHEV. All LR cars from 1984
2021.5 Vogue SE D300 Carpathian Grey
2018 Vogue SE British Racing Green GONE

18th Jul 2022 10:11am

stan
Site Moderator

Member Since: 13 Jul 2010
Location: a moderate moderated moderator moderating moderately in moderation
Posts: 34913

i got this,

[3.0 litre, 16my]

and on a very recent frenchland trip,

... - .- -.

click link for ,

FORUM WIKI

HOW TO Ǝꓕ∀ꓕOꓤ PICS

workshop manual downloads are in our wiki

.

18th Jul 2022 10:12am

TJH1985

Member Since: 11 Feb 2015
Location: Nottingham
Posts: 663

2007 Range Rover Vogue SE TDV8 Java Black

This was my trip home from work on Friday, also a 4.4 SDV8:

M25 back up to the midlands with a little bit of traffic, seems the MPG is pretty consistent with your UK trip.

By contrast my Octavia VRS does 55mpg on the same route.. Sold - Bell a 2015 MY16 Loire Blue Autobiography 4.4 SDV8
Previously George a 2007 MY07 Java Black VSE 3.6 TDV8
Previously a 04 MY04 Defender 90

18th Jul 2022 10:17am

A1GSS

Member Since: 24 Dec 2010
Location: Saffron Walden, Essex
Posts: 1973

Anyone with a supercharged to add some useful balance Graham

____
Gone: 10MY L320 RR Sport HSE, Ipanema Sand
Gone: 20MY Jaguar iPace HSE, Silicon Silver
Gone: 17MY RR Evoque SE Tech, Loire Blue
Gone: 08MY Discovery 3 XS, Stornoway Grey
Gone: 07MY FFRR TDV8 Vogue, Stornoway Grey

18th Jul 2022 12:45pm

Mikey

Member Since: 10 Jan 2008
Location: Dundee
Posts: 1689

Click image to enlarge

My hopelessly optimistic 5.0 SC Jag is currently reading this...

18th Jul 2022 1:19pm

A1GSS

Member Since: 24 Dec 2010
Location: Saffron Walden, Essex
Posts: 1973

FFS. Maybe I should buy a diesel. or another EV! Graham

____
Gone: 10MY L320 RR Sport HSE, Ipanema Sand
Gone: 20MY Jaguar iPace HSE, Silicon Silver
Gone: 17MY RR Evoque SE Tech, Loire Blue
Gone: 08MY Discovery 3 XS, Stornoway Grey
Gone: 07MY FFRR TDV8 Vogue, Stornoway Grey

18th Jul 2022 1:28pm

Martin2

Member Since: 15 Jun 2020
Location: Northamptonshire
Posts: 713

The computer in this car is the most optimistic of any I’ve had over the years, currently just over 6% difference to the actual mpg vs 0.8% on my wife’s Golf R. I do track every fill up….not (just! ) because I’m a geek!

It does seem to quite like the warmer weather, this was from last week and I had the aircon/cooled seats on plus the fridge running. Even with some healthy optimism, that’s 35mpg, which I think is pretty good. Although my 4.4V8 Petrol 750i would have been over 40mpg on the same journey. I’ve had a quick look back and it achieved 43.9 (true 42.3mpg) on the same journey with a 64mph average speed.

So a petrol V8 can be the way to go, but not in a Range Rover!

MY23 Panamera E-Hybrid
MY19 SDV8 Autobiography - Sold

18th Jul 2022 1:46pm

A1GSS

Member Since: 24 Dec 2010
Location: Saffron Walden, Essex
Posts: 1973

That's a V8 diesel presumably? Can't imagine the S/c getting anywhere near that! Graham

____
Gone: 10MY L320 RR Sport HSE, Ipanema Sand
Gone: 20MY Jaguar iPace HSE, Silicon Silver
Gone: 17MY RR Evoque SE Tech, Loire Blue
Gone: 08MY Discovery 3 XS, Stornoway Grey
Gone: 07MY FFRR TDV8 Vogue, Stornoway Grey

18th Jul 2022 2:05pm

Martin2

Member Since: 15 Jun 2020
Location: Northamptonshire
Posts: 713

Yes, V8 diesel. MY23 Panamera E-Hybrid
MY19 SDV8 Autobiography - Sold

18th Jul 2022 2:21pm

Martin2

Member Since: 15 Jun 2020
Location: Northamptonshire
Posts: 713

Drove like Stan this afternoon….although I bet it was a bit faster! I’m slightly annoyed that I sat in the car in the hotel carpark looking at emails and it dropped from 39.3!

MY23 Panamera E-Hybrid
MY19 SDV8 Autobiography - Sold

18th Jul 2022 8:08pm

Lyonhead

Member Since: 05 Aug 2017
Location: Cardiff
Posts: 349

2019 Range Rover SVAutobiography 5.0 SC V8 Loire Blue

This is a recent trip with my S/C 575bhp.
It does look dreadful compared to some of the mpg’s posted up, especially Stan’s figures.

19MY SVA-Dynamic Spectral Chromoflair Blue but colour not available in profile
2016 RRS SVR Estoril Blue - Gone
2010 RRS 5.0 Supercharged Navara Bronze - Gone
2008 RRS 4.2 Supercharged Black - Gone
2006 RRS 2.7 Diesel Rimini Red- Gone

18th Jul 2022 9:40pm

DrF

Member Since: 30 Jun 2014
Location: South East
Posts: 1243

2013 Range Rover SVAutobiography 5.0 SC V8 Orkney Grey

Here's mine,

2015 - Autobiography Black 5.0 (525bhp) Supercharged - 21.5mpg
2021 - SV Autobiography 5.0 (550bhp) Supercharged - 24.5mpg
2022 - First Edition Autobiography 4.4 (530bhp) Twin Turbo - 26.1mpg

18th Jul 2022 10:17pm

Martin2

Member Since: 15 Jun 2020
Location: Northamptonshire
Posts: 713

My 7 series had pretty much the same engine as your new car DrF…..quite the difference!

MY23 Panamera E-Hybrid
MY19 SDV8 Autobiography - Sold

18th Jul 2022 10:28pm

DrF

Member Since: 30 Jun 2014
Location: South East
Posts: 1243

Thats amazing for a twin turbo petrol !!

18th Jul 2022 10:32pm

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