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ORNL study quantifies fuel economy costs of common driver practices and vehicle alterations

Green Car Congress

Researchers at Oak Ridge National Laboratory (ORNL) have quantified the fuel economy effects of some common driver practices and vehicle accessories or alterations—including underinflated tires, open windows, and rooftop and hitch-mounted cargo. liter four-cylinder engine, also suffered as its fuel economy dipped 22% from 42.5

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ORNL researchers quantify the effect of increasing highway speed on fuel economy

Green Car Congress

This website, jointly maintained by the US Department of Energy and the US Environmental Protection Agency (EPA), provides information such as official EPA “window label” fuel economy estimates for city, highway, and combined driving for all U.S.-legal drop in fuel economy due to traveling 80 mph rather than 70 mph.

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EPA fuel economy report finds weight and power leveling off, footprint stable

Green Car Congress

EPA recently released the latest edition of its annual report Light-Duty Automotive Technology, Carbon Dioxide Emissions and Fuel Economy Trends. The report is the authoritative reference for real-world fuel economy, technology trends and tailpipe carbon dioxide emissions, for new personal vehicles sold in the US every year since 1975.

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UMTRI: US new vehicle fuel economy stayed the same in July

Green Car Congress

After a three-month drop, fuel economy of all new vehicles sold in the United States remained unchanged in July, according to researchers at the University of Michigan Transportation Research Institute (UMTRI). Average fuel economy (window-sticker values) of cars, light trucks, minivans and SUVs purchased last month was 23.6

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EPA annual report on CO2, fuel economy and technology trends finds 2012 heading for all-time best; rapid adoption of new technologies

Green Car Congress

Adjusted CO 2 emissions and adjusted fuel economy, MY 1975-2011. The report finds that CO 2 emissions rates and fuel economy values reflect a very favorable multi-year trend beginning in MY 2005. The fleet-wide average real world MY 2011 personal vehicle CO 2 emissions value is 398 g/mi and average fuel economy is 22.4

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Average fuel economy of new vehicles in the US rose again in November; UMTRI Eco-Driving Index at 0.87, highest since April

Green Car Congress

Average fuel economy of all new vehicles sold in the United States is up for the second straight month, according to researchers at the University of Michigan Transportation Research Institute (UMTRI). Average fuel economy of cars, light trucks, minivans and SUVs purchased in November was 22.7

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2011 edition of EPA Fuel Economy Trends report shows several advanced powertrain technologies making significant gains

Green Car Congress

Fuel economy improvements for the hybrid vehicles vary considerably from 5-10% for the larger, luxury hybrid vehicles to more than 40%. Fuel economy improvements for diesels range from 15% to 30% relative to gasoline counterparts. Compared to MY 1987, MY 2010 CO 2 emissions were 11 g/mi (3%) lower, and fuel economy was 0.6