I get between 16 and 21 on svr N

E46 M3
X6
2015 RRS HSE dynamic
2018 RRS Autobiography
2019 SVR

This was mine after a long run but only managed to get £100 in it which at the time was about 80 litres
At one point on the motorway it was reading 30 mpg but this soon dropped once back in to town.
Round town I'm seeing 16-20 mpg. 2017 SVR. SVO Scafell grey Ebony interior
2012 3.0 SDV6 Autobiography santorini black with ebony/cirrus interior. Gone

Last edited by Smarttech on Wed Sep 02 2020 6:35pm. Edited 1 time in total

663 km (416 miles) between fill ups yesterday. Averaged 20.9 mpg in 95% highway driving in 5 hours 41 minutes. 2020 SVR / R.I.P. 2019 SVR / 2016 D4 Landmark / 2005 D3 HSE

Anyone compared supermarket super petrol compared to BP/essay/shell for svr performance ?
I heard some supermarkets PetrolPrices has more ethanol compared to esso N

E46 M3
X6
2015 RRS HSE dynamic
2018 RRS Autobiography
2019 SVR

I have tried time and time again giving super 2000 miles minimum in my SC v8 each time I get a new motor and its never made a jot of difference, I'm sure it makes a difference with other brands but not the current v8 in my eyes. MY18 SCV8 Satin flux silver
Gone:
MY19 SV VELAR AUTOBIOGRAPHY firenze red
MY18 SCV8 Yulong white- perfect 👍
MY16 SDV8 SANTORINI BLACK - perfect 👌
MY64 SCV8 DARK BLUE - nightmare car
MY64 SCV8 FIRENZE RED - loads of annoying issues
MY15 SDV6 FIRENZE RED - perfect 👌
MY12 SDV6 DISCO4 IPANEMA SAND - perfect 👌
MY09 TDV6 SPORT BLUE - lots of issues

I run my svr on normal unleaded shell petrol as I read somewhere the one of that SVO tech blokes said super wasn't required but if you felt better knowing it's on super unleaded then use it or just save the difference every time you filled up by sticking with normal good quality unleaded and not the cheaper supermarket fuels ! 2017 SVR. SVO Scafell grey Ebony interior
2012 3.0 SDV6 Autobiography santorini black with ebony/cirrus interior. Gone

Last edited by Smarttech on Tue Sep 22 2020 5:33pm. Edited 1 time in total

Good to know guys
Thanks N

E46 M3
X6
2015 RRS HSE dynamic
2018 RRS Autobiography
2019 SVR

Gents, I experienced a very weird consumption issue during this weekend's road trip: the last leg of our journey, which should have been the most fuel efficient, turned out to be the worst one!

Click image to enlarge

Cooler air is denser, as is the air at sea level compared to 1600m. Denser air needs more fuel to burn correctly.

Just a guess.

Oh, and I love your characterisation of 15-20degC as "very cold". We've just had a few days where the mercury never got above zero degC and today we had 12degC and it felt positively summer-like. Up in Scotland they've had -20degC (-23degC one night) which, although not as bad as some countries get, is still "very cold"!  2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Did you factor in which way the wind was blowing?

IME, I've always gotten better consumption on colder days.

And yes, I realise the relative 'cold' - my measure is when my wife tells me she's cold  --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport Supercharged V8 HSE Dynamic



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ

1richard1 wrote:

Did you factor in which way the wind was blowing?

I did: today there was a side wind (passenger to driver), moderate to strong. No headwind at all - the grass along the N1 is very tall at the moment, so it's easy to gauge the direction.

It really bugs me that even when I got on the road, I could tell that the consumption was higher just by looking at the instantaneous figures.... but I kept hoping I was wrong.

The difference is quite big when you consider 2L/100km over 634km: that's almost 13L, meaning I could get home on one tank instead of having to refuel just short of home

Also very frustrating having to refuel when the range shows 65km, and then only 85L goes in, meaning that there's another 20L in the tank. This would have been more than enough to get me home (115km) without refuelling.  --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport Supercharged V8 HSE Dynamic



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ

Also with the temps that will no doubt have an effect on tires and road surface temps, friction, tyres wear?

Hmm, I don't think so, because the day before the conditions were similar and the consumption was 11.41.

Even so, we're talking a +- 20% increase, which is a big difference! --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport Supercharged V8 HSE Dynamic



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ

For many years I did a long mostly motorway commute of approx 80miles each way. Before I got the RRS I hasten to add. By far the biggest factor was the wind direction. I always got a better mpg in one direction than the other even with the cruise set at exactly the same speed. I appreciate that these figures may not have been 'real world' accurate but as a comparative they should be reliable. Easily accounted for a 10% difference. The difference in consumption at 50mph compared with 77mph was remarkable, so you dont need much of a headwind to have a real impact. RRS HSE Dynamic SDV6 2014

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