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EIA: fuel economy improvements bring diminishing returns in fuel savings

Green Car Congress

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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EPA Trends on EVs and PHEVs; beginning of a “measurable and meaningful impact” on new vehicle fuel economy and emissions

Green Car Congress

The agency’s reasoning was that since alternative fuel vehicle production has generally been less than 0.1% of total vehicle production until very recently, the impact of excluding alternative fuel vehicles was negligible. In the analysis, EPA uses overall fuel economy in mpg equivalent (mpge) and tailpipe CO 2 emission values.

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FEV testing finds Transient Plasma ignition system increases fuel efficiency and decreases emissions

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liter, direct and port fueled injection, inline 4-cylinder gasoline engine commonly used in the Camry line of vehicles. The “Dynamic Force Engine” achieves one of the world’s best thermal efficiencies of 40% in gasoline powered vehicles according to Toyota.

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EPA, DOT Propose New Fuel Economy Labels; Addressing GHG Emissions, Fuel Consumption and Advanced Technology Vehicles

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From left to right: EV, PHEV, gasoline/diesel, gasoline/diesel. The US Department of Transportation (DOT) and the US Environmental Protection Agency (EPA) are jointly proposing changes to the fuel economy labels consumers see on the window of new vehicles in dealer showrooms. Color is integral to the new schemes.

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EPA trends report sees record levels of average new vehicle fuel economy and CO2 emissions for MY 2012; role of new gasoline vehicle technologies

Green Car Congress

EPA projects advanced transmissions (6+ speeds and CVTs), gasoline direct injection (GDI) systems, and turbocharged engines will be installed on at least 15% of all MY 2013 vehicles. The majority of the emissions and fuel savings from current vehicles, EPA noted, is due to new gasoline vehicle technologies. mpg, or 22%.

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Volvo extends S60 range with plug-in hybrid powertrain and new trim levels

Green Car Congress

Volvo has extended its S60 range—the third generation of the premium mid-size sedan—to incorporate further powertrain choices and equipment grades, including an all­wheel­drive gasoline-electric hybrid and a trim level that focuses on luxury and craftsmanship. Fuel economy (on the WLTP combined cycle) is up to 147 mpg US.

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New report finds global CO2 vehicle emission reduction measures falter; dropping diesels, increasing SUVs

Green Car Congress

Vehicle fuel economy improvements have slowed globally, according to the latest report from the Global Fuel Economy Initiative (GFEI): Fuel Economy In Major Car Markets: Technology And Policy Drivers 2005-2017. Overall, global fuel economy has improved by an average of 1.7% L ge /100 km.

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