miles per gallon - Page 4

chrisp17283 · #31 7th June 2011, 05:15 AM

I'm not sure what's going on with my gaby 2.8 a8 then as Im not seeing anything like what your getting in the s8's!! If I take note of the dash it says I'm getting between 10.1 and 11.6 around town and about 15-17 on a run at about 70-75? If i work it out properly im getting about 21.6-22mpg on a run! I've replaced maf sensor, all vacuum hoses, air filter, plugs. I did buy a second hand maf from Carl but he said it was all fine before I got it I have even cut out and run new wires to the maf?? I'm quickly running out of ideas and patience.

Adrian E · #32 7th June 2011, 08:45 AM

I'm currently getting 15mpg around town and no better than 20mpg on a run

Got a whole 19.9mpg average on v-power on a run to Swindon on Sunday - when I work it out as a tank average, the economy I calculate is slightly worse than the figures above, which are what the on board display tells me...

Curtis · #33 27th July 2011, 12:17 PM

at idle mine is telling me its using 51.9liters/100km. not sure what the issue is there.
Cat has been removed thought might be the cause.

The_Laird · #34 27th July 2011, 02:43 PM

Ouch!

My 2.8 used to average around 25mpg according to the on board computer and better on a run. As one of the real mpg saddo's, I've got nearly a year's worth of data on the S8 - every tank for around 20K miles - and it's averaging a little over 21.

And I can even find data to end the arguement about getting better mpg from premium fuel (BP Ultimate, etc). You do get better mpg - about 3.5% according to my figures - but that's not quite enough to compensate for the price hike (although the 'looking after your expensive engine' arguement still holds). In effect, if you take into account the better fuel consumption, the premium fuel costs about 2p per litre more than normal fuel.

I really must get out more...

Dezzy · #35 27th July 2011, 04:12 PM

Quote:

Originally Posted by chrisp17283

I'm not sure what's going on with my gaby 2.8 a8 then as Im not seeing anything like what your getting in the s8's!! If I take note of the dash it says I'm getting between 10.1 and 11.6 around town and about 15-17 on a run at about 70-75? If i work it out properly im getting about 21.6-22mpg on a run! I've replaced maf sensor, all vacuum hoses, air filter, plugs. I did buy a second hand maf from Carl but he said it was all fine before I got it I have even cut out and run new wires to the maf?? I'm quickly running out of ideas and patience.

Yeah something not right with that you'd get that out a Stolly well almost. Seriously though something need fixing

Nollywood · #36 27th August 2011, 08:58 AM

Quote:

Originally Posted by jayzee

V-power and foot to the floor all the way for me

Watch that all too fragile ZF 5HP24 while you're at it, hehehehe.

Nollywood · #37 27th August 2011, 05:07 PM

I brimmed my tank, and zeroed the odometer. So far, as at today I've done 380.1 miles exactly. I have just under a quarter of a tank left, range is indicating 75 miles.

DIS indicates 19 - 21 mpg around town, and 26 - 30 on a long run at 70 mph. I'm curious to see what I'll get when the warning lamp comes on, and when the range is showing 0.

ainarssems · #38 27th August 2011, 09:47 PM

Be careful when running down to 0 if you have not done it before and keep a can with spare fuel in boot just in case as some cars run out of fuel before reaching 0, some shortly after reaching 0 and some like mine can do another 30 miles while showing 0 and still not run out.

When I get new car I always run down to 0 and beyond as much as I dare with a can in boot just to test how far can it go to know the limit for the future. Not on diesels though as I do not fancy bleeding a system in the middle of road.

Nollywood · #39 27th August 2011, 10:01 PM

Quote:

Originally Posted by ainarssems

Be careful when running down to 0 if you have not done it before and keep a can with spare fuel in boot just in case as some cars run out of fuel before reaching 0, some shortly after reaching 0 and some like mine can do another 30 miles while showing 0 and still not run out.

When I get new car I always run down to 0 and beyond as much as I dare with a can in boot just to test how far can it go to know the limit for the future. Not on diesels though as I do not fancy bleeding a system in the middle of road.

Great tip. I've got a spare jerry in the trunk though, in readiness.

Nollywood · #40 29th August 2011, 05:36 PM

Well, as at today I've achieved 402.3 miles, with a possible 35 miles indicated range. I have a jerry in the trunk, I'll put that in tomorrow. In theory, it may be possible to cover at least 20 miles more, but I'm not keen on running completely dry, and stalling on a major road.