I'm interested in getting significantly better mileage if I can, but I'm not sure I want to go the hybrid route. I know VW has some high-quality, high-mileage advanced diesel models. I don't know what other options I have besides these two for a high-mileage car. I might go with Subaru as I like their vehicles, but the mileage tends to suck. But...
I'm unconvinced I want another new car. The economics of new aren't hugely favorable to me and I'm not sure I want to take on the financial nut of a big auto loan. But the best mileage and cleanest engines are going to be on the newer models.
Finally, I'm fond of hatchbacks. It's not a deciding factor for me, but the ability to haul boxes and/or small pieces of furniture is a big plus.
Thoughts and suggestions welcome.