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- W74277695 abstract "This paper identifies trends in new gasoline and diesel passenger car characteristics in the European Union between 1995 and 2009. By 2009 diesels had captured over 55% of the new vehicle market. While the diesel version of a given car may have as much as 35% lower fuel use/km and almost 20% lower CO2 emissions, diesel buyers shifted to increasingly larger and more powerful cars more than the gasoline market. As a result, new diesels bought in 2009 had only 2% lower emissions relative to gasoline cars, an smaller than that of 1995. A Laspeyres decomposition investigates which factors were important contributors to the observed emission reductions and which factors offset savings in other arenas. More than 95% of the reduction in emissions per km from new vehicles arose because both diesel and gasoline new vehicle emissions/km fell, and only 5% arose directly because of the shift to diesel technology. Increases in vehicle weight and power for both gasoline and diesel absorbed much of the technological efficiency improvements offered by both technologies. We also analyze the implications of the uncertain diesel black carbon soot as a factor offsetting the CO2 advantage of diesel cars. Finally, we observe changes in the gasoline and diesel fleets in eight EU countries and find changes in fuel and emissions intensities consistent with the changes in new vehicles reported. While diesel cars continue to be driven far farther than gasoline cars, we attribute only some of this difference to a “rebound effect”. We conclude that while diesel technology has permitted significant fuel savings, the switch from gasoline to diesel in the new vehicle market contributed little itself to the observed reductions in CO2 emissions from new vehicles." @default.
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- W74277695 date "2011-01-01" @default.
- W74277695 modified "2023-09-23" @default.
- W74277695 title "Impact of New Passenger Vehicle Changes and the Shift to Diesel on European Union’s CO2 Emissions Intensity" @default.
- W74277695 hasPublicationYear "2011" @default.
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