2011 Toyota Camry Hybrid
Fuel economy: 33 mpg (5-10 more than the gas engine)
Annual fuel cost: $1,345
Annual CO2 emissions: 5.7 tons
Good Housekeeping named the Camry its top pick for a Roomy Family Car in its test drives of fuel-efficient cars, noting that "its quiet, supersmooth ride and intuitive controls are major pluses."