V50 Engine 2.0D : MPG really bad

[colinjy]

Hello

just recently bought a V50 a few weeks ago filled it up with 21ltrs of diesel last week and got 210 miles out of that till the light came on with mixxed driving.

After filling up again with 21ltrs im almost at the red marks (1mm off) and have only covered 120 miles again with the same sort of driving. ive seen the tank drop 1/4 of a tank in 90 miles round trip to high wycombe which doesn't seem right.
tyres are all at right level, car has the same load in as last week (i.e. me and my lunch) performance is the same no loss of power.

has any one got any ideas on what would be causing this ?

thanks in advance

[ajaycad]

If my maths is right, travelling 210 miles on 21 litres of fuel is 10 miles per litre which equates to about 45 mpg - about right for a 2.0D (I,m averaging about 51 mpg mixed driving from a 1.6 start/stop)
However, 120 miles for roughly the same amount of fuel isnt right - if there are no signs of a performance loss or change, there could be many reasons why a drastic drop in fuel economy is experienced. It may be a faulty fuel guage or sender unit/associated wiring, a leak etc. Any signs of fuel under the car when parked overnight? or leave the car running for a while, then see if there are any leaks which you will see dripping onto the road under the car. Unless you can find a simple explanation, it may well be a trip to the local garage for diagnosis.

Did you buy the car privately or from a dealer?

[colinjy]

Originally Posted by ajaycad

If my maths is right, travelling 210 miles on 21 litres of fuel is 10 miles per litre which equates to about 45 mpg - about right for a 2.0D (I,m averaging about 51 mpg mixed driving from a 1.6 start/stop)
However, 120 miles for roughly the same amount of fuel isnt right - if there are no signs of a performance loss or change, there could be many reasons why a drastic drop in fuel economy is experienced. It may be a faulty fuel guage or sender unit/associated wiring, a leak etc. Any signs of fuel under the car when parked overnight? or leave the car running for a while, then see if there are any leaks which you will see dripping onto the road under the car. Unless you can find a simple explanation, it may well be a trip to the local garage for diagnosis.

Did you buy the car privately or from a dealer?

Car bought privately

i'll have a look over the next day to see if there are any leaks as it's been raining here for the past 2 days it's hard to tell, but there's not smell of fuel which would possibly be another sign.

I dont suppose it could be anything like a bad batch of fuel ?

[iandonnadnjess]

hi im getting about 47 mpg on average in my 2.0 d