The month of December witnessed the average fuel economy (window-sticker value) of new vehicles sold in the US at 24.8 mpg , which is down by 0.2 mpg from the revised value in November. The value however was up 4.7 mpg from the value in October 2007, as per the first month of University of Michigan Eco-Driving Index (Umich EDI).
The Umich has stated that the average fuel economy of all vehicles sold during the calendar year 2013 was 24.8 mpg, up 1.0 mpg compared with the 2012 value and up 3.9 mpg from 2008.
The University of Michigan Eco-Driving Index (EDI) estimated the average monthly emissions of greenhouse gases generated by an individual US driver at 0.80 in October. It has stated that the lower the value the better it is.
The latest value proves that there has been an improvement of 20 percent since October 2007. The estimate was arrived by taking into account both vehicle fuel economy and distance driven.