my mpg

[rover_ed]

I went on a site and worked it out surly can't be that low wouldn't mind mind if it was a twin turbo

[p_b82]

as said, you need to brim the tank (from the same pump ideally) and run the trip vs L put in....

a part fill is never a true factor.

I log the ZS's milage and L in a spreadsheet - used to be just on paper - and over the years it is always 40-45... my 'best' was 32mpg.... stupid faulty injectors and a lead right foot...

New car coming in a few months, will be half that.. probably worse (am expecting 15!)

[talkingcars]

Originally Posted by rover_ed

I went on a site and worked it out surly can't be that low wouldn't mind mind if it was a twin turbo

As everyone keeps saying - you can not work out consumption from half a tank.
The gauge isn't accurate enough to show exactly how much fuel is in there.
You need to fill the tank to the brim, use the car, and fill to the same point.
You can't even rely on the low fuel light, it comes on a different times depending on factors such as driving style, weather and even the slop of the road.

And, as I said above, I have had a couple of 15mpg tankfuls in the past so it's possible.

[mattyprice4004]

You may as well pull random numbers out of the air rather than trying to guess it from the fuel gauge and 20 quid.

Needs to be brim to brim, ideally over a few tankfulls to be meaningful.