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UMTRI: average new vehicle fuel economy in the US dropped 0.2 mpg in December

The average fuel economy (window-sticker value) of new vehicles sold in the US in December was 24.8 mpg (9.49 l/100 km), down 0.2 mpg from the revised value in November, according to the latest monthly figures from Michael Sivak and Brandon Schoettle at the University of Michigan Transportation Research Institute (UMTRI). The December figure represents an increase of 4.7 mpg from the value in October 2007 (the first month of their monitoring).

The average fuel economy of all vehicles sold in calendar 2013 was 24.8 mpg, up 1.0 mpg from 2012 and up 3.9 mpg from 2008.

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The University of Michigan Eco-Driving Index (EDI)—an index that estimates the average monthly emissions of greenhouse gases generated by an individual US driver—stood at 0.80 in October (the lower the value the better). This value indicates an improvement of 20% since October 2007.

The EDI takes into account both vehicle fuel economy and distance driven (the latter relying on data that are published with a two-month lag).

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The economy is at it again?

As more and more Americans get a good paying job, they will buy larger heavier vehicles, consume more fuel per mile and drive more miles per capita.

Will the arrival of improved ICEVs and a few HEVs, PHEVs, BEVs and FCEVs be enough to offset the boom in heavier vehicle purchased? If not, average fleet fuel economy may go down more in the next few months.

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