2010 Silverado and Sierra XFE Models Get 22 MPG Highway
Last year, General Motors and Ford responded to high fuel prices and consumer demand for more fuel-efficient pickup trucks by rolling out new "fuel efficiency" crew-cab models. The Chevrolet Silverado and GMC Sierra XFE twins and Ford F-150 SFE were all rated at 15/21 mpg city/highway. For 2010, GM is breaking the tie.
Ford has kept the gas mileage numbers but dropped the XFE label from the 2010 F-150 lineup while GM continues to wring efficiency from its XFE rigs. The result: Non-XFE Silverado and Sierra crew cabs with 5.3-liter V-8 engines are now rated at last year's 15/21 mpg while the latest XFE trucks gain an extra 1 mpg on the highway, to 15/22 mpg city/highway. That's the same highway figure as GM's full-size hybrid pickup trucks. The bump in gas mileage also boosts combined city/highway fuel economy ratings from 17 mpg to 18 mpg.
Chevrolet spokesman Brian Goebel says that engineering refinements helped GM achieve the XFE's improved numbers.
"We've enhanced the trucks' fuel-saver mode, which optimizes shift patterns in the six-speed transmission for the best fuel economy. Also, Active Fuel Managment [which automatically operates the engine in four-cylinder or eight-cylinder modes depending on load to save fuel] is now able to hold four-cylinder mode longer. Plus, we've added variable valve timing to the engine."
This fuel economy improvement comes with no compromise in capability. Horsepower, payload, and trailering specifications remain the same for Chevy and GMC full-size pickups.
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