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Study estimates fuel economy improvements to US light-duty vehicles from 1975–2018 saved 2T gallons of fuel, 17B tons of CO2

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A team from the University of Tennessee and the National Renewable Energy Laboratory (NREL) has the fuel savings due to fuel economy improvements over the past 43 years amount to approximately two trillion gallons of gasoline. Estimated attribution of fuel savings due to fuel economy improvements to light-duty vehicles since 1975.

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EIA: fuel economy improvements bring diminishing returns in fuel savings

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Improving fuel economy exhibits diminishing returns in fuel savings, according to a brief analysis by the US Energy Information Administration (EIA). Similarly, the fuel and cost savings of improving fuel economy from 12 mpg to 15 mpg are the same as increasing from 30 mpg to 60 mpg.

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Latest EPA automotive trend report shows MY 2017 fleet fuel economy of 24.9 mpg; new record

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The latest edition of the US Environmental Protection Agency (EPA) annual Automotive Trends Report finds that Model Year (MY) 2017 vehicle fuel economy was 24.9 Since MY 2004, fuel economy and CO 2 emissions have improved in eleven out of thirteen years. Estimated Real-World CO 2 and Fuel Economy. Source: EPA.

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DOE: in 2018, 27% of new light-duty vehicles in US had fuel economies > 30 mpg

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In 2018, 27% of new light-duty vehicles sold in the US had fuel economies of more than 30 miles per gallon (783 l/100 km), according to the US Department of Energy (DOE). By contrast, none of the light-duty vehicles produced in 1975 had fuel economy greater than 30 miles per gallon (mpg). In 1995, 4.4% In 2018, 2.4% Source: U.S.

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

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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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2014 Ram 1500 EcoDiesel earns 28 mpg highway; best in segment

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liter V6 EcoDiesel-powered 2014 Ram 1500 pickup ( earlier post ) has earned a 28-mpg (8.4 The combined city/highway rating is 23 mpg (10.2 liter Pentastar V-6 gasoline engine earned 25 mpg (9.4 liter Pentastar V-6 gasoline engine earned 25 mpg (9.4 It also exceeds the EPA highway rating for the top-ranked small pickup.

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ORNL study finds best current use of natural gas for cars is efficient production of electricity for EVs

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However, they also noted, high PTW efficiencies and the moderate fuel economies of current compressed natural gas vehicles (CNGVs) make them a viable option as well. The study investigated the the WTW energy and emissions from the use of natural gas in CNGVs with a range of CNGV fuel economy and natural gas compressor efficiency.