I traded in a BMW 330ci for a 1.9 diesel lauguna about 5 years ago and got a lifetime average of 53mpg (even driving like my hair was on fire). So the last few weeks of the SC have been a little bit revvy and "making progress". I think I'll get a few more mpg, but nowhere near diesel mpg, soon. I just love the SC whine though  
07 Supercharged - Still breaking her in!

Boot soundproofing part 1 - http://www.fullfatrr.com/forum/topic15612.html
Custom exhaust - http://www.fullfatrr.com/forum/topic15296.html
18" wheels for Brembo equipped cars - http://www.fullfatrr.com/forum/topic15052.html

Mistake

OK you got me I drew it on with a pencil  2008 MY Supercharged
Rimini Red / Jet
four zone climate
remote park heater
and no ugly kid windows.
magnus satis quod turpis satis

Filled mine up this morning OBC showing a range of 591 miles, travelled 100 miles to Oban and when I arrived the OBC showed a range of 616 miles done another 90 miles around Oban then back to Glasgow, total of 290 miles and filled up again with 44.75 litres an average of 29.4mpg. Not bad when you take into account 60 miles were a single track road where I was never in a gear higher than 3rd

I think it's great when you are driving on the motorway and your miles per tank increases, it's like you're driving for free!

Or is that just me?

I must drive funny, cant get my readout to go above 450miles.

Trundled back along the A52 from Grantham to Notts, at 55 with a full tank, zeroed everything, and got the princley sum of 31mpg, whilst breathing on the accelerator gently. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
KIA E-Niro 4+
2021 Discovery 5 D300 MHEV commercial

47p2 wrote:

Filled mine up this morning OBC showing a range of 591 miles, travelled 100 miles to Oban and when I arrived the OBC showed a range of 616 miles done another 90 miles around Oban then back to Glasgow, total of 290 miles and filled up again with 44.75 litres an average of 29.4mpg. Not bad when you take into account 60 miles were a single track road where I was never in a gear higher than 3rd

Criekey which way do you go to Oban , we have roads and even electricity now .  2008 MY Supercharged
Rimini Red / Jet
four zone climate
remote park heater
and no ugly kid windows.
magnus satis quod turpis satis

Up the A82 loch side to Tyndrum then the A85, time from my house was 2 hours and 5 minutes, return time was exactly 2 hours.
To be fare the roads were fairly quiet but there were 3 occasions on the road up when I gave the FFRR some beans to pass a string of cars and a couple of times on the road down

I suppose I have to also take into account it was serviced the day before which all helps with the mpg

Zero'd the trip after I filled up - drove 104.7 miles and it still says ... 621. By my calculation (rough) that would give approx 34mpg That's assuming the 621 is right

As L322 Pilot says I think it's related to 1,00kms, the max I could ever get my Canadian one to read was 999 Kms when filling up, sadly I did try quite hard to see if it would go over that  2021 P400 Silicon Silver AB
Gone 2011 Bournville TDV8 VSE
Gone 2008 Black Canadian HSE LUX

LHD in KMS gives max 999 on my readout.

Well that's blown the 1000 kilometer theory right out of the water then

999kms converted to miles =620.7498210450966

I posted that just to show how silly the range 'limit' is - as clearly the vehicle could go further than 621 miles (I managed 569 with no motorway driving, so 620+ should be a doddle - and I still had 8 or 9 litres of diesel left in the tank at refill!) Land Rover Addict
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2009 5.0V8SC Autobiography
2006 4.2V8SC Autobiography
2004 4.4V8 Vogue