Cars and Drivers

US Auto Fuel Economy Rating 25 MPG in November

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The average fuel-economy rating for new vehicles sold in the United States in November 2017 was 25.0 miles per gallon, down from the October average of 25.1 mpg. For all of 2016, the average fuel-economy rating for new vehicles sold was 25.2 mpg, down 0.1 mpg from the 2015 average.

Compared with October 2007, fuel economy ratings on new cars sold has improved by 4.9 miles per gallon, or about 24%.

While the window sticker average is 6.5 mpg higher than when the data were first collected, the sales-weighted average is 0.5 mpg below its revised all-time high of 25.5 mpg set in August 2014 and the slightly below highest monthly average (25.4 mpg in July) for the first 11 months of 2017.

The data are based on the average sales-weighted fuel-economy rating printed on a new car’s window sticker and are compiled by Michael Sivak and Brandon Schoettle of the University of Michigan’s Transportation Research Institute.

The sales-weighted unadjusted Corporate Average Fuel Economy (CAFE) performance rating averaged 31.3 miles per gallon in November, a decrease of 0.1 mpg month-over-month and an improvement of 6.5 mpg since October 2007. These values are not directly comparable to the window-sticker ratings because these are adjusted by the EPA and used to derive the window-sticker ratings.

Sales of pickup trucks from the Detroit Three automakers (GM, Ford, Fiat Chrysler) were strong again in November, totaling about 177,736 full-size pickups for the month. Because fuel economy is lower for light trucks, the sales-weighted declines in fuel economy ratings are in large part due to higher truck sales.

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