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D2 - Fuel and Exhausts Everything to do with getting fuel into the engine, and fumes back out again

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  #1  
Old 24th October 2014, 01:00 PM
ricky302 ricky302 is offline
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Default Fuel distance till empty

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.
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Old 24th October 2014, 01:08 PM
mattylondon mattylondon is offline
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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.
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Old 24th October 2014, 01:41 PM
PsYcHe PsYcHe is offline
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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.
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Old 24th October 2014, 01:44 PM
tintin tintin is offline
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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.

Last edited by tintin; 24th October 2014 at 07:26 PM.
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Old 24th October 2014, 05:25 PM
ainarssems ainarssems is offline
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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.
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Old 24th October 2014, 07:19 PM
ricky302 ricky302 is offline
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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.
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Old 24th October 2014, 07:32 PM
sarg sarg is offline
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Quote:
Originally Posted by ricky302 View Post
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
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Old 24th October 2014, 09:18 PM
mannyo mannyo is offline
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Quote:
Originally Posted by ricky302 View Post
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.
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Old 24th October 2014, 09:27 PM
ricky302 ricky302 is offline
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I put in 75 litres to fill it up, I take it since it has a 90L tank 15L is sitting in one of the sides unused?
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Old 24th October 2014, 11:44 PM
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Architex_mA8tey Architex_mA8tey is offline
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I recognise that S8 - did it come from Swindon by any chance?
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