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UMTRI: Average new-vehicle fuel economy in US in May up 0.3 mpg from April

The average fuel economy (window-sticker value) of new vehicles sold in the US in May was 25.5 mpg (9.22 l/100 km)—up 0.3 mpg from April—according to the latest monthly report from Dr. Michael Sivak and Brandon Schoettle at the University of Michigan Transportation Research Institute (UMTRI). They suggested the improvement likely reflects the increased price of gasoline in May. Fuel economy is down 0.3 mpg from the peak reached in August 2014.


Overall, vehicle fuel economy is up 5.4 mpg since October 2007 (the first month of their monitoring). However, the average vehicle fuel economy during the first eight months of this model year (October 2014 through May 2015—25.3 mpg (9.29 l/100 km)—has stayed the same as during the preceding model year (October 2013 through September 2014).


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—was 0.82 in March, unchanged from the value in February (the lower the value the better). This value indicates that the average new-vehicle driver produced 18% lower emissions in March 2015 than in 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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