Ford F-150 EcoBoost Challenge winner averages 28.3 mpg

The week-long Ford F-150 EcoBoost Challenge is over and Carlee Mallard of Raleigh-Durham, North Carolina has emerged victorious. Mallard achieved a rather impressive 28.3 miles per gallon (not as spectacular as the 32.281 mpg that CleanMPG averaged back in May) during her week behind the wheel of the F-150. Additionally, Mallard rounded up 56 volunteers for her community service event, which included collecting donations for the Raleigh YWCA for distribution to families affected by Hurricane Irene.

For Mallard?s efforts, she?ll receive a year?s supply of free Shell gasoline (oh, the irony) and two Shell stations…