2006 Pontiac Vibe

Price When New: $17,675
Dealer Used Price: $10,227
Private Party Price: $9,548
Certified Used Price: $10,880
MPG (city/highway): 25/31

GM's twin of the Toyota Matrix costs a few hundred dollars less. This grocery-getter has a fuel-efficient 1.8-liter, four-cylinder engine that gets 30 miles to the gallon in the city and 36 on the highway, and it has 19 cubic feet of cargo space.