For the 2009 model year, the GMC Sierra and Chevy Silverado XFE took fuel economy up a notch by hitting 21 mpg in highway driving. Ford's new SFE F-150 matched the Silverado's 15/21 numbers.
the best of any full-size pickup. EPA highway estimates are highly competitive: 22 mpg for 4x4 versions, and 24 mpg for 2WD models. Reflecting Silverado's straightforward approach to performance ...