I know this is going to sound pretty obvious but:
Check your tyre pressures are correct (think it should be 29psi for fronts & 32 psi on rears)
and
Check your wheel alignment is correct
if either are out, this makes hell of a difference to your MPG as your tyres are not rolling as efficiently as they should....
check tyre pressures weekly & have your wheel alignment checked every 6 months.
David, when was the last time you checked either?
I had my wheel alignment done 6 months ago it was way out and my car had eaten a set of front tyres to the point they were bald on inside edge & had 5mm left on outside edge. It was stepped wear, so had it done & got 2 new tyres.
Had wheel alignment checked again this week in addition to my MOT & it was out, again, both front & rear. So had to be adjusted again on the 4 wheel hunter machine.
Car feels a whole lot better now & retuns slightly better MPG than it did before the MOT
I check my tyre pressures prior to any long journey (along with lights & levels checks).
Wasn't aware of the wheel alignment issue however, thanks for the head up mate. I'll check my tyres in the morning.
Does anyone know what mpg a PD170 Leon should return on a long journey?