Right this is bugging the hell out of me...Got a 2001 MK3 Mondeo Ghia X deisel..yeah yeah I know devils fuel..but needs must..anyway when I stick fuel in like £20.it shows on the trip I have around 160miles of fuel...which is fine..but the part thats bugging me is I drive say 60miles and park up..

leave car come back get in start up, and it shows less than 50miles fuel and the light is on then after 5miles or less it shows 25miles then keeps dropping down..until it reads 0miles left..

I've taken the battery leads off a few times and then it shows then correct milage left ie 95miles or so..WTF's going on with the stupid thing, then after a while it starts doing the same thing, showing less and less milage and fuel left. Im thinking I have a problem with the clocks or the computer... as I've worked out Im getting around 40mpg..round the streets and a good 50mpg on a run..

so anyone got any idea's cause it's doing my nut clean in..