article thumbnail

DOE proposes revising procedures for calculating petroleum-equivalent fuel economy of EVs for use in CAFE calculations

Green Car Congress

The US Department of Energy (DOE) is proposing a significant revision in its procedures for calculating a value for the petroleum-equivalent fuel economy of EVs for use in the Corporate Average Fuel Economy (CAFE) program administered by the Department of Transportation (DOT). Background. Proposed PEF.

article thumbnail

Fiat boosts stake in Chrysler to 58.5% after achieving fuel economy and production commitment milestone with the new Dart

Green Car Congress

Fiat has boosted its interest in the Chrysler Group by another 5% following Chrysler’s achievement of the “Ecological Event”—receiving regulatory approval for an automobile based on a Fiat platform or vehicle technology having a fuel efficiency rating of at least 40 combined miles per gallon (5.88 Earlier post.).

Chrysler 218
article thumbnail

ORNL researchers quantify the effect of increasing highway speed on fuel economy

Green Car Congress

This website, jointly maintained by the US Department of Energy and the US Environmental Protection Agency (EPA), provides information such as official EPA “window label” fuel economy estimates for city, highway, and combined driving for all U.S.-legal drop in fuel economy due to traveling 80 mph rather than 70 mph.

article thumbnail

EPA annual trends report finds new vehicle fuel economy at record 24.1 mpg; new powertrain technologies rapidly gaining share

Green Car Congress

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.

article thumbnail

Chrysler Group withdraws test PHEV fleet to upgrade battery packs after overheating issues; to use a different chemistry

Green Car Congress

On Friday, Chrysler Group LLC announced it was withdrawing from service its test fleet of plug-in hybrid-electric vehicles (PHEVs) to conduct a battery-pack upgrade. Chrysler said that a different battery chemistry will be used in the projects’ next phase, which will focus on grid interaction and improved safety.

Chrysler 268
article thumbnail

2011 edition of EPA Fuel Economy Trends report shows several advanced powertrain technologies making significant gains

Green Car Congress

Fuel economy improvements for the hybrid vehicles vary considerably from 5-10% for the larger, luxury hybrid vehicles to more than 40%. Fuel economy improvements for diesels range from 15% to 30% relative to gasoline counterparts. Compared to MY 1987, MY 2010 CO 2 emissions were 11 g/mi (3%) lower, and fuel economy was 0.6

article thumbnail

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

MY 2012 adjusted fuel economy is 23.6 mpg fuel economy improvement from MY 2011 to MY 2012 is the second largest annual improvement in the last 30 years. l/100 km) fuel economy, which, if achieved, will again represent all-time records. Click to enlarge. l/100 km), which is 1.2 mpg, or 22%. Click to enlarge.