The Obama administration got a lot of attention earlier this year when it raised fuel efficiency rules to an average 35 miles per gallon across the nation’s fleet of automobiles that will be produced between 2012 and 2016. Now the Environmental Protection Agency (EPA) and the National Highway Traffic Safety Administration (NHTSA), a division of the U.S. Department of Transportation (US DOT), have laid out an ambitious road map [pdf] to push tougher greenhouse gas emission and fuel economy standards for passenger cars and trucks built from 2017 through 2025, standards that hypothetically could push the national fleet average up as high as 62 mpg.
“We must, and we will, keep the momentum going to make sure that all motor vehicles sold in America are realizing the best fuel economy and greenhouse gas reductions possible,” said U.S. Transportation Secretary Ray LaHood. “Continuing the national program would help create a more secure energy future by reducing the nation’s dependence on oil, which has been a national objective since the first oil price shocks in the 1970s.”
Today’s report provides an initial assessment for a potential national program for the 2025 model year horizon and outlines next steps for additional work the agencies will undertake to meet the yet-to-be established GHG reduction goals. Depending on the scenario eventually chosen, the industry will have to reduce CO2 production across the national car and truck fleet from a minimum 3 percent (or the equivalent of 47 mpg) up to 6 percent (or the equivalent of 62 mpg).
The report outlines the costs and benefits of several approaches for reaching the targets (technology pathways A, B, C, or D), from focusing on reducing vehicle size and advanced gasoline, to relying on gas-electric hybrids and full electric vehicles (EVs). Rule makers assert that even the 6 percent target is achievable with existing technology, though the higher benchmark would require more hybrids and EVs within a manufacturer’s fleet. Read more…