I managed 30mpg on the drive back at 65mph.

I'm looking into LPG too as I can't afford that everyday.

MG

I have a 3.7 QS and the best that i have had with a very light right foot is 37-38 on a motorway run at about 60-65 that was about 100 mile run. I always use V power , Not that there has been alot around Leiecster over the past few weeks :(:(. I picked some up when i was in the South over the weekend. +++

South East has no v-power still either - south west did when we were down there, but went in the 'wrong' car just in case! Had to fill the S8 with 95 in the end as fed up trawling Shell/BP/Texaco in the faint hope one of them had had a delivery!

Apparently Shell took the decision to prioritise 95 and std diesel deliveries to their sites at the back end of March and I assume that will continue until any threat of strike is withdrawn.

a8/s8
 

I can't get anything above 17.5 mpg on lpg or petrol I wish I can get this sorted

Well on the second day of running the S8 daily, I'm getting 28mpg door to door.

I'm having to work very hard to get that though.

Maybe a service will help!

MG

You'll not get any better than that, and i'd even say that's 28 is a bit ambitious in an S.

Is that from the DIS or from workings out from miles covered and litres put in the tank?

Lol, nice.

That's from the dash readout.

My drive home was not quite so sedate and it only dropped to 22mpg!

Back to behaving nicely tomorrow. It's good to boot it once in a while though... :)

MG

Yesterday evening I drove from Blandford, Dorset to Haverhill, Suffolk and was very surprised and pleased at the fuel economy.

Once out of town, I reset the trip computer and the average according to the DIS display for the journey was 35.1 MPG. I know in reality its going to be less, but even so compared to the computer on my previous car which was a 2.0 TDi DSG Skoda Superb MK2 which could only manage 44MPG on the computer for the same trip. The route was all main roads though, A31, M27, M3, M25, M11, A14 then A1307.

First fill up after a weeks driving.

Driving included one trip (of 38 miles) at 55mph max managed to get 28mpg.

After that it was all down hill as I had to follow one my general manager back to his and he was in a hurry... you can guess the result!

My trip home was similarly silly but it was the first time I'd put my foot down so I was interested as to what it would do.

The next two trips were to Heathrow and back at a steady 85mph with the occasional poke to get past traffic.

A few more trips to work and back and the read out was on 23.5mpg.

On fill up this morning (it took 81.94 Litres), for 409.8 miles I got 22.74mpg (22.7355) so the DIS (what does that stand for?) isn't that far out.

Oh, that's on cheap ASDA fuel.

Now I've got to try and be good for the next tank full!! ;)

MG

I think it's Driver Information System

And try and be good for the next tank? please, you've bought an S! +++

Ahah, that makes sense.

Last tankfull got me 23mpg but I was driving it like an idiot again.

This tankfull, I'm cruising everywhere, using the Tiptronic buttons to shift up at the earliest moment and so far, I'm on 28mpg after 180 miles.

MG

Seriously, why bother with MPG recorded on your DIS, you might as well stick your thumb in the air.

The only MPG figures that should be noted are those calculated manually, do that for 3 tankfuls of mixed driving, then post your results, you'll be surprised if you've come to rely on the DIS

Because the last two fill ups, the DIS (as you call it) has been within 4% of what I'm actually getting when I do a fill up.

First fill up showed 23.5mpg and I got 22.7mpg.

Second fill up showed 23.8mpg and I got 23mpg.

As it's showing 28mpg... I know that I'm getting close to 27mpg.

MG

I keep a record and it's usually out by 3-4% with outlying results around 2% and 5% if I've done very strange journeys that confuse it

That's calculated on a brimmed tank basis

I think during the period when I had no life and used to monitor the economy manually ( :p ) that mine was around 10% optimistic.

I'm happy if I get 22mpg! (& I have to drive like a priest to attain that....... oooh the temptation!)
Must be quite flat where you are :)

Well this evenings drive up to Leeds managed 28.6mpg.

V boring but I'm not rich so while I have to travel 320 miles this weekend... I'm going to do it as cheaply as possible.

MG