Subscribe free to our newsletters via your
. 24/7 Space News .

Study: More fuel-efficient cars on market
by Staff Writers
Ann Arbor, Mich. (UPI) Jan 31, 2012

disclaimer: image is for illustration purposes only

New light-duty automobiles entering the U.S. market are more fuel-efficient and give motorists up to 1.7 miles per gallon more on the road than vehicles bought before 2008, a University of Michigan study indicated.

"Recent Fuel Economy Trends for New Vehicles in the U.S." reported on gains made as a result of automobile design and manufacture changes made in the past five years.

The report by Brandon Schoettle and Michael Sivak from the university's Transportation Research Institute indicated fuel savings in most types of vehicles bought during the 2008-12 period.

Vehicles using diesel and gasoline, the two dominant fuels, showed marked improvements. While gasoline engines showed the smaller increase, gaining 2.3 miles per gallon, diesel engines showed a much larger improvement, with gains averaging 9.8 miles per gallon.

The less prevalent vehicles using battery-electric and hydrogen fuel-cell technologies are rated about two to four times as efficient as gasoline and diesel.

The researchers looked at improvements in fuel economy achieved since 2008 in a range of vehicles, comparing savings in cars and light trucks.

They examined fuel efficiency by vehicle size class, transmission type, number of engine cylinders, drive type, fuel type and hybrid versus conventional vehicles.

The research on fuel savings comes amid continuing concerns on both energy dependency and greenhouse gas emissions.

Last year the U.S. Environmental Protection Agency and the U.S. Department of Transportation's National Highway Traffic Safety Administration issued a proposal extending a national program to further reduce greenhouse gas emissions and improve fuel economy for model year 2017 through 2025 light-duty vehicles.

The EPA proposed national greenhouse gas emissions standards under the Clean Air Act, and NHTSA proposed Corporate Average Fuel Economy standards under the Energy Policy and Conservation Act as amended by the Energy Independence and Security Act.

The standards proposed would apply to passenger cars, light-duty trucks and medium-duty passenger vehicles, covering model years 2017 through 2025.

The proposed standards are projected to require limits of 163 grams per mile of carbon dioxide in model year 2025 -- about 54.5 miles per gallon if the vehicles were to meet this carbon dioxide level all through fuel economy improvements.

The standards are meant to be applied across average industry fleet and include all passenger cars, light-duty trucks and medium-duty passenger vehicles.

Last week California's Air Resources Board approved historic rules that require 15 percent of new cars sold in California by 2025 run on electricity, hydrogen or other systems producing little or no smog.

The "advanced clean car rules" also require automakers to cut greenhouse gas emissions by 50 percent on all new vehicles by 2025 and tailpipe emissions of soot and smog by roughly 75 percent over the same time period.

The greenhouse rules are similar to new national rules being developed by the Obama administration and will result in new cars averaging 54.5 miles per gallon by 2025, double current fleet average for new cars.

Last year the administration also unveiled fuel-efficiency standards for heavy-duty trucks.


Related Links
Car Technology at

Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks DiggDigg RedditReddit GoogleGoogle

Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News

China car maker SAIC says 2011 profit surged
Shanghai (AFP) Jan 31, 2012
China's SAIC Motor, the largest domestic auto maker, said Tuesday that unaudited net profit rose more than 40 percent last year, despite an overall slowdown in the world's biggest car market. SAIC gave no net profit figure for 2011 in a statement to the Shanghai stock exchange, but said net profit was 13.73 billion yuan ($2.18 billion) in 2010. The Shanghai-based company, which has joint ... read more

A Moon Colony by 2020

U.S. Presidential Hopeful Promises Moon Base by 2020

Moon looms bright over Republican debate

Rocket Man: Gingrich peddles space dreams in Florida

Mars Rover Science Investigations Continue as Solar Energy Levels Drop

Russia blames 'cosmic rays' for Mars probe failure

Mars Orbiter Shows Wind's Handiwork

Durable NASA Rover Beginning Ninth Year of Mars Work

Indian school teacher set for US space programme

Romney sees launchers fueled by private enterprise

First US chief technology officer stepping down

NASA Moves Closer to Planetary Landing Demo Capability on Earth with Draper's GENIE

China's satellite navigation sector annual output predicted to reach 35 bln USD in 2015

China plans to launch 21 rockets, 30 satellites this year

Shenzhou 9 Behind the Curtain

China Plans to Launch 30 Satellites in 2012

Russia to postpone next manned space launch: official

Russia will replace Soyuz for next ISS mission: source

Russia to postpone next manned space launches

Russian cargo vessel arrives at space station

Launch of Proton-M with Dutch Satellite Postponed

First Vega rocket assembled on launch pad

Ukraine, Russia to Launch 2 Dnepr Carrier Rockets in 2012

Russia Plans to Launch U.S. Satellite in February

On-again/off-again 'planet' elusive

NASA's Kepler Announces 11 Planetary Systems Hosting 26 Planets

NASA's Kepler confirms 26 new planets

Earth's Cloudy Past Could Reveal Exoplanet Details

Samsung says Germany rejects Apple's sales ban bid

Lynas shares surge after Malaysia approves plant

Malaysia approves Australian rare earths plant

Three SOPS LEO team snares first operating turn

The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement