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Citing the possibility of an ongoing increase in sales of larger, less-efficient cars and trucks as one factor, General Motors Corp. has revised its future average fuel economy numbers sharply downward in its most recent application for federal aid.

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Small cars like the future Chevy Spark may not help GM meet next decade's fuel economy standards.
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The automaker's revisions could  also signal a growing belief within GM that it may fall short of meeting the federally mandated corporate average fuel economy, or  CAFE, standards for 2020 - a fleet average of 35 miles per gallon.


The New York Times reports today that GM said in its application last week for an additional $12 billion in federal aid that it expected its 2013 model-year passenger cars to be averaging 33.7 mpg and its light trucks for the same model year to average 23.8 mpg.


In its original aid filing, in December, the automaker estimated calendar-year 2012 fuel economy at 37.3 mpg for cars and 27.5 mpg for trucks.


The revisions represent a 9.6 percent drop in passenger car fuel economy and a 13.4 percent decline in light truck efficiency.
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Tags: Fuel Economy, General Motors, CAFE, Fuel Economy, General Motors

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GM's Future Fuel Economy Estimates Drop in New Federal Aid Application was originally published by Green Car Advisor. Read the full story by clicking here.