Automobile Economy Fuel Economy 
Green Car Congress
DECEMBER 27, 2013
Innovators at NASA’s Glenn Research Center have developed an automated pulse-and-glide technique using a flywheel energy storage system for on-road vehicles; the technology, which NASA Glenn says can improve fuel economy over existing internal combustion or battery hybrid systems by 40-100%, is available for licensing.
Green Car Congress
OCTOBER 11, 2014
With alternative fuel vehicles now approaching 1% of new vehicle production, however, they are in fact beginning to have a “ measurable and meaningful impact ” on overall new vehicle fuel economy and CO 2 emissions. In the analysis, EPA uses overall fuel economy in mpg equivalent (mpge) and tailpipe CO 2 emission values.
Green Car Congress
SEPTEMBER 8, 2011
The types of vehicles consumers select has by far the most dominant impact on on-road fuel economy—the best vehicle currently available for sale in the US is nine times more fuel efficient than the worst vehicle. Average on-road fuel economy in the US for all vehicles in 2008 was 17.4 mpg US (13.5
Green Car Congress
OCTOBER 10, 2014
EPA released the latest edition of its annual report on trends in CO 2 emissions, fuel economy and powertrain technology for new personal vehicles in the US. Fuel economy has now increased in eight of the last nine years; average carbon dioxide emissions are also at a record low of 369 g/mile in model year 2013.
Green Car Congress
SEPTEMBER 19, 2019
Specifically, in this action, NHTSA is affirming that its statutory authority to set nationally applicable fuel economy standards under the express preemption provisions of the Energy Policy and Conservation Act (EPCA) dictates that such state and local programs are preempted. Earlier post.)
Green Car Congress
SEPTEMBER 15, 2009
Greenhouse gas and fuel economy levels under the EPA NHTSA joint proposed rulemaking. These standards would require them to meet an estimated combined average fuel economy level of 34.1 mpg if the automotive industry were to meet this CO 2 level all through fuel economy improvements. Click to enlarge.
Green Car Congress
SEPTEMBER 11, 2013
Among the objectives of the project is delivering a 5% fuel economy improvement by direct conversion of engine waste heat to useful electric power for light-duty vehicle application. For light duty passenger vehicles, the fuel economy improvement must be measured over the US06 cycle.
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