Oops... Sorry John that I took such an age to answer...
We drive a Toyota Carine E estate with a 1600cc engine. It does in the region of 32 miles per gallon in town and about 42 on a run.
What do we do to save fuel? The only thing we can do... try not to use the car too much.
That is difficult, as I am disabled and can't walk too far and Stan has a heart problem and also is not too good on foot. So ... we have to grinand bear it.
But I hope you can understand that we are a little envious of your fuel-price-problem!!!!