By
Associated Press
.
Published: Mon, August 25, 2008 - 9:48 pm
Last Updated: Mon, August 25, 2008 - 10:00 pm
U.S. automakers say they'll improve theefficiency of current models while they prepare to roll out new,
higher-mileage vehicles.
G.M. has boosted the 2009 Chevrolet Cobalt's highway mileage by
about one mile-per-gallon. In the high-mileage version of the
Cobalt and its Pontiac sister, the G5, engineers varied the intake
and exhaust valve timing to burn fuel more efficiently. They also
arranged with Goodyear for tires with lower rolling resistance.
The improved Cobalt gets an estimated 37 miles-per-gallon.
Ford says its engineers added a six-speed automatic
transmission, electric power steering and variable valve timing to
the Escape and Mercury Mariner small sport utility vehicles to get
another two miles-per-gallon on the highway.
Shelby, Sessions Oppose Auto Bailout
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