V8 MPG On A Long Run

[Reebs]

While driving up to Eden Camp last weekend in the V8 I switched on the torque app that's installed in my double din and was amazed to find that driving for 267 miles on the motorway at 70mph it reported an average fuel consumption of 30.1mpg

Does that sound feasible in a 260 under such driving conditions or is the app and OBD dongle a bit wonky? In my V6 cars the IPK usually reads 28 - 30mpg on motorways, so if so there isn't much in it

Of course stop/start driving around town is another matter in the V8......

[dbt01]

Originally Posted by Reebs

While driving up to Eden Camp last weekend in the V8 I switched on the torque app that's installed in my double din and was amazed to find that driving for 267 miles on the motorway at 70mph it reported an average fuel consumption of 30.1mpg

Does that sound feasible in a 260 under such driving conditions or is the app and OBD dongle a bit wonky? In my V6 cars the IPK usually reads 28 - 30mpg on motorways, so if so there isn't much in it

Of course stop/start driving around town is another matter in the V8......

I'm always a bit sceptical about the figures you get in that way. I know using the IPK 'estimates' is not at all accurate on any of my V6's. I would say that my V8 is only around 10% thirstier than the actual average (not IPK) for my V6's, but they vary by almost that amount from each other anyway.

The only way to tell is to check from top-up to top-up on the odometer, and then over a number of fill-ups and types of journey. On the 1000 mile round trips to PoL 2016 and 2017, same conditions and route, I got EXACTLY the same consumption approaching 29mpg. 90% motorway. Only one leg including 20 miles of 50mph road works cones on the M1 edged over the 30mpg this year (just cones and cameras; no 'work' of course) but I lost that advantage in the Belgian battle-zone!

Your figures look pretty much like mine I guess then. Personally I am surprised how frugal they are on fuel.

David

[stevestrat]

On a steady run with a gentle right foot (boring!) I get just over 28 mpg, that's using the old fashioned manual calculation fill up to fill up/mileage method. Like David I think that ain't bad considering the size of the lump under the bonnet. Never been brave enough to calculate the around town mileage.

[dbt01]

Originally Posted by stevestrat

... Never been brave enough to calculate the around town mileage.

Me neither! Must be better than my old Jag V12 which I once measured at 3mpg over a week of school-runs in the depths of winter . That's Hummer level + !!

David

[FLYING BANANA]

On a good run I can get 26mpg out of the Bear. I have got it down to 12mpg after a spirited drive. I use the old method of calculating the mpg.

[Leyland Worldmaster]

When I drive Alison enthusiastically, I get 50 MPG! Terrible! I'll have to calm things down so that I can return to our personal best which is 69 MPG.

🐧🐧🐧😁😁😁

[Simon227237]

I get an average of 28mpg out of mine on a mainly motorway runs. I have measured the mpg a few times on motorway runs using the brim to brim method and it always works out around 28mpg. I have never been brave enough to measure the mpg around town, I just put £20 in every time I use it.

[ceedy]

Only to make Us 260'ers feel better ...


I can make my CDTi auto's IPK to show btween 7-11 mpg on a fast getaway from a standing start

C.

[dbt01]

Originally Posted by ceedy

Only to make Us 260'ers feel better ...


I can make my CDTi auto's IPK to show btween 7-11 mpg on a fast getaway from a standing start

C.

I can get a V6 IPK to show a " - " symbol instead. Minus sign means its using less than any fuel, right ? Teslar electric, go eat your heart out
... Maybe because it was a drag-start in reverse.

David

[stevestrat]

Originally Posted by ceedy

I can make my CDTi auto's IPK to show btween 7-11 mpg on a fast getaway from a standing start

C.

I had a 3 litre V6 Omega Elite, I could get it into low single figures, by low I mean 3 mpg