The 16/23-mpg figure for the GMC Sierra with the new generation of GM's 5.3-liter V-8 is said to be higher than a "comparative" EcoBoost-powered Ford F-150 by 2 mpg highway, and by 3 mpg versus the V-8-powered Ram 1500.
The 2013 Ford F-150, with the 3.5-liter EcoBoost V-6 is rated by the EPA at 16/22 mpg. We're seeking clarification on how GMC defines "comparative."
The V-8 will be joined later by a 4.3-liter V-6 as the base engine, as well as a 6.2-liter V-8. Power outputs for those drivetrains have not been released.
The Silverado and Sierra also have base prices from the mid-$20,000 range. The 2014 Sierra, for example, comes in base regular-cab configuration from $25,085 including destination charges. The Sierra Double Cab is priced from $29,110; the Crew Cab, from $33,210.
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