The average fuel economy (window-sticker value) of new vehicles sold in the US. in September was 23.8 mpg (9.88 l/100 km)— unchanged from August, but up 3.7 mpg (or 18%) from October 2007, according to the monthly report from Michael Sivak and Brandon Schoettle at the University of Michigan Transportation Research Institute (UMTRI).
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 July.
This value indicates a record 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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