Not very good that's what it is..
I did a 100 mile round trip from home to near regent's Park in London today.
Only averaged 16.7 mpg in the supercharged.. I thought it would do better than that. My 4.4 X5 will get mid 20's on a run

you should have bought a diesel

36mpg on a recent 120 mile round trip. 3.0L SDV6 L494 L494 3.0L SDV6 Autobiography in Chile Red (Current)
L320 3.0L SDV6 Autobiography in Baltic Blue (RIP 29/03/2021 insurance total loss)

36mpg? Were you turning the engine off on the downhill sections?

Wow, that's impressive. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Childsplay

I got 39mpg on a run the other week, through suburban London and up the motorway. 110miles or so. 3.0 SDV6 L320

Last edited by Gumby on Wed May 12 2021 10:17am. Edited 1 time in total

Recently did a 217 mile segment averaging over 81 mph, came in at 16.7 mpg which is acceptable for that speed in my opinion. 2020 SVR / R.I.P. 2019 SVR / 2016 D4 Landmark / 2005 D3 HSE

2007 TDV8 best mpg solo 31mpg obeying motorway speed limits , when towing our twin axle 26 foot caravan 20 mpg pottering around town about 22mpg.

Cruising at around 90 i tend to do 21 mpg on the 50 mile commute. Turn it down and cruise at 65-70 and i usually see just over 30.
2010 RRS tdv6.

I too can get nice high mpg when on a run and up to speed I reset the mpg setting then take the value while still on the cruise. Of course as soon as you add in town running, like from home to wherever that may include sub 30 mph at several points then this will significantly alter values, probably to a more realistic value. 13MY Range Rover Sport Autobiography SDV6 - mine
14MY Range Rover Evoque Dynamic SD4 Black Pack - wife's
99MY Defender 90 TD5, Soft Top Conversion - my toy, and bairns favourite

RRSTDV8 wrote:

36mpg? Were you turning the engine off on the downhill sections?

Wow, that's impressive.

Jjvd21 wrote:

Recently did a 217 mile segment averaging over 81 mph, came in at 16.7 mpg which is acceptable for that speed in my opinion.

My SDV6 averages around 25mpg but that's on AT tyres (they do use a bit more fuel, sadly, and they're 55 profile which means the car thinks it's doing slightly fewer miles than it really is but only by a couple of %), and a lot of minor roads which means lots of braking and accelerating. Sit on a motorway at a constant speed and the economy improves as might be expected, so long as the speed is moderate. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

400 mile round trip to Devon last weekend, 95% motorway/fast A road, 36mpg there, 38mpg back, cruise set at 77. Make this run regularly and these are about right. Only going off the trip computer though, reality might be a bit different but I'm not complaining.
L494 3.0 HSE Dynamic 72k miles, one of the first in 2013. RRS HSE Dynamic SDV6 2014

Nemo mortalium omnibus horus sapit

RRSTDV8 wrote:

Jjvd21 wrote:

Recently did a 217 mile segment averaging over 81 mph, came in at 16.7 mpg which is acceptable for that speed in my opinion.

Is that miles per US gallon? In which case it's not bad at all.

Yes miles per US gallon. I pushed it for a few miles at over 100 mph and the real-time mpg was showing 13.7 which I thought was impressive. I don’t know how accurate it is/was but I can say my RRS drives better at 80 mph than it does 30 mph. Quite the beast  2020 SVR / R.I.P. 2019 SVR / 2016 D4 Landmark / 2005 D3 HSE

mix of motorway and around town here usualy get around 26MPG the last time i checked, which for the weight of the bus is quite pleasing - L320 SDV6