I just borrowed my Mum's Mazda 323 for the 260km round trip to go and pick my daughter up. My fiancee was out in my Celica.
The 323 has a 1.3 litre engine (as opposed to the 2.2 litre in the Celica). It was so economical and as it's a wagon, could fit heaps of astro-gear

Quite pleasant to drive too.
I think my next car will have a very small engine and a hatch

I would say fuel costs were about half of what I'm used to in this thing.