Fuel distance till empty

[ricky302]

Just filled my 1998 S8 fuel tank to the brim and the computer is saying 255 miles left till I run out, this can't be right surely?

90 litres = 255 miles = 13mpg!.

Is there a way to calibrate this or is something not right?

I own a 1998 Jaguar XJR and a 2001 M3 also and they're nowhere as bad as this.

[mattylondon]

Hi and welcome to the forum.

If it's like the D3 then you have to drive a bit so the computer can calculate the range based on your current consumption. If you're sat in city traffic then 13mpg sounds about correct.

[PsYcHe]

The PF D2 was the same, it's based on the last little while of driving, so if you hit a nice long stretch of road, it'll start to climb up.

[tintin]

It calculates that figure depending on your recent driving history: so that suggests that you've just been either:

1 - doing a lot of urban stop/start driving and/or

2 - hoofing it a bit (only you know which…).

It should recalibrate if you then start to drive it on longer runs (e.g. motorways): my wife would typically find that she could drive it for more than a hundred miles before the "remaining range" figure started to fall….

Not the most sophisticated system, but ok once you get used to its logic.

[ainarssems]

Like said before it depends on recent driving. I have got it showing 150 when flooring it and 500 doing steady 50mph on speed limited motorway roadworks. Under normal circumstances it is showing 300-320 miles on full tank for me.

[ricky302]

Cheers everyone, I have only had the car a week and in that time the airbag light came on and it's run out of fuel with a quarter of a tank showing.

[sarg]

Originally Posted by ricky302

Cheers everyone, I have only had the car a week and in that time the airbag light came on and it's run out of fuel with a quarter of a tank showing.

It is 16 years old, any car of that age is gonna have teething problems

[mannyo]

Originally Posted by ricky302

Cheers everyone, I have only had the car a week and in that time the airbag light came on and it's run out of fuel with a quarter of a tank showing.

Running out of fuel is common, how much fuel did you put in to fill up from there. i am guessing the problem is the usual issue with the fuel pump. Sometimes when its replaced, its not seated correctly as its a ballache to do and the result is that the lift pump cannot get fuel from the second half of the tank once the level drops.