http://www.fueleconomy.gov/feg/byclass.htm
and search SUVs. Then search midsize sedans, then search station wagons (which look like hatchbacks oddly enough). Spoiler: for non hybrids, this list is roughly in increasing order for FE.
I would think about a sedan like a camry/accord or a little crossover like a scion or vibe, whichever you think you can fit into
The added height of an SUV kills your FE (bad aero, big heavy tires) and they are too prone to rolling over.