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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 miles per gallon, slightly higher than MY 2016, and a record high overall. Since MY 2004, fuel economy and CO 2 emissions have improved in eleven out of thirteen years.

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CARB releases results of multi-year E15 study; multiple air quality benefits with slight reduction in fuel economy

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The Multimedia Evaluation (MME) of E15 looked at the effects of increased ethanol content on exhaust emissions in 20 vehicles—all model year 2016 or newer. The study used two fuels—an E10 and E15. The summer-grade E10 fuel was sourced from four different refineries that were selected by CARB.

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ICCT provides policy update on proposed China Phase 4 fuel economy regulations

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Comparison of global passenger vehicle fuel consumption standards normalized to NEDC L/100km. In absolute terms, the new regulations would put China third behind the EU and Japan for fuel consumption and GHG regulations. Manufacturers and importers must meet both standards. Source: ICCT. Click to enlarge. Source: ICCT.

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ICCT: incremental technology can cut vehicle CO2 by half and increase fuel economy >60% through 2030 with ~5% increase in price

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l/100 km) in 2016, the The ICCT team assessed increased consumer label fuel economy (as opposed to the regulatory test fuel economy) to 35 mpg (6.71 The resulting trajectory would reduce CO 2 emissions by half and increase fuel economy by more than 60% from 2016 through 2030. Source: The ICCT.

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EPA to maintain light-duty vehicle GHG standards unchanged through 2025

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In an expected ruling, US Environmental Protection Agency (EPA) Administrator Gina McCarthy finalized her decision to maintain the current greenhouse gas (GHG) emissions standards for model years 2022-2025 cars and light trucks. The Standards Will Achieve Significant CO 2 and Oil Reductions. Earlier post.) Click to enlarge.

EPA 150
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EPA: GHG emissions standards for cars and light trucks should be revised; joint process with NHTSA (updated with more reactions)

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The US Environmental Protection Agency (EPA) Administrator Scott Pruitt announced the completion of the Midterm Evaluation (MTE) process for the greenhouse gas (GHG) emissions standards for cars and light trucks for model years 2022-2025, and his final determination that the current standards are not appropriate and should be revised.

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CMU study shows autonomous vehicle algorithms can have considerable effect on fuel economy; need for new approaches in testing

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Autonomous vehicle driving behavior can have a considerable effect on fuel economy. However, the study also showed that autonomous vehicle (AV) technology following algorithms designed without considering efficiency can degrade fuel economy by up to 3%. —Mersky and Samaras (2016).