16 mpg: Estimated mileage for a 2009 Hummer H3 four-wheel drive

17 mpg: Estimated mileage for an ’09 Toyota 4Runner four-wheel drive

29 mpg: Estimated mileage for an ’09 Mini Cooper

34 mpg: Estimated mileage for an ’09 Toyota Camry Hybrid

46 mpg: Estimated mileage for an ’09 Toyota Prius

Source: U.S. Environmental Protection Agency, www.fueleconomy.gov