Generally, NOT an efficient car. It has AWD, and it's heavy for it's size - which makes it stable in high-speed turns and strong in side impacts, but bad for fuel economy.
Current Mods:
Pumped up my tires to 40 psi. Car came with a boost gauge.
Planned Mods:
After I've saved enough gas money with hypermiling, I may buy a ScanGauge. As of Nov. 12th, 2009, I've saved $147! (by my way of figuring my savings, not Ecomodder's)