Corporate average fuel economy in the US for light-duty vehicle sales fell 0.3 miles per gallon in September, according to the University of Michigan Transportation Research Institutes monthly report. It has to do with the reduced price of gasoline, making fuel-efficient vehicles less important to new car shoppers, according to one of the universitys researchers. [...]The Article Fuel Economy Fell 0.3 MPG in September, According to Study appeared first on Automotive Digest.