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June 24, 2013   |   Diesel Technology Forum

Press Release

New Technology Clean Diesel Trucks With Near Zero Emissions Make Up 28% of All Trucks on U.S. Highways

Contact: Steve Hansen (301) 668-7230 shansen@dieselforum.org

2007 & Later Year Diesel Truck Technology a Success - Reducing NOx and PM Emissions By More Than 95%

Washington, D.C. – More than 28 percent of all trucks registered in the United States – 2.5 million of 8.6 million trucks - are now equipped with advanced new technology clean diesel engines, according to new data compiled by R.L. Polk and Company for the Diesel Technology Forum (DTF).

The Polk data includes registration information on Class 3-8 trucks from 2007 through 2012 in all 50 states and the District of Columbia. Beginning in 2007, all heavy duty diesel trucks sold had to meet particulate emissions levels of 0.01 grams per brake horse-power hour (g/HP-hr) - a level near zero.

“The fact that more than 28 percent of all trucks on U.S. roads today are new technology diesel engines with near zero emissions is significant for the environment and the trucking industry,” said Allen Schaeffer, the Executive Director of the Diesel Technology Forum. “More than 95 percent of all heavy-duty trucks are diesel-powered, as are a majority of medium-duty trucks. Diesel power is the driving force today of goods movement by truck in our economy and they are continuing to play a central role of the United States' new effort to reduce fuel consumption and lower greenhouse gas emissions (GHG) in the coming years.

“These increasing penetration rates are a reflection of the confidence that truckers have in the new technology diesel engines, particularly during the last few years which have been a recessionary period with lower demand for trucking services,” Schaeffer said.

Regionally, the Midwest (31%) has the highest percent of new diesel trucks, followed by the South (29.8%), the Northeast (29.1%), and the West (26.0%).

New Diesel Trucks by Region

Region             Total Post-2007          Percent            Total Trucks

                    Clean Diesel Trucks     Of All Trucks         In Region

Midwest                740,937                   31.0%              2,388,950

Northeast             353,875                   29.1%              1,216,036

South                    935,425                  29.8%              3,134,659

West                     489,615                  26.0%              1,882,208

Totals                  2,519,852              28.6%            8,621,853

(Source: R.L. Polk and Company for the Diesel Technology Forum)

Midwest States: Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, Nebraska, North Dakota, Ohio, South Dakota, Wisconsin

Northeast States: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Vermont

South States: Alabama, Arkansas, Delaware, District of Columbia, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, Virginia, West Virginia

West States: Alaska, Arizona, California, Colorado, Hawaii, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, Wyoming

New Technology Diesel Engines & Fuel Have Reduced NOx By 99% & PM By 98%

“Emissions from today’s diesel trucks and buses are near zero thanks to more efficient engines, more effective emissions control technology and the nationwide availability of ultra-low sulfur diesel fuel. The new clean diesel technology has reduced emissions from heavy-duty diesel trucks and buses by 99 percent for nitrogen oxides (NOx) and 98 percent for particulate emissions.

“What makes the new diesel technology even more remarkable is model year 2010 and later trucks are experiencing an average of three to five percent improvement in fuel economy. Additional fuel-saving strategies are being developed to improve engine efficiency, vehicle aerodynamics and expanded application of hybrid technology.

“In addition, new diesel technology and ultra-low sulfur diesel are benefitting many of the older diesel trucks built before 2007. Through the use of retrofit upgrades, older diesel engines can improve their performance and reduce key emissions by up to 90 percent,” Schaeffer said.

Clean Diesel Truck Growth by Year

                                                  2007     2008     2009     2010     2011     2012

Percentage New Diesel Trucks   9.4%     13.9%    16.9%    20.1%    24.1%   28.6%

Percentage Annual Increase       --         +4.5%    +3.0%    +3.2%    +4.0%   +4.5%

(Source: R.L. Polk and Company for the Diesel Technology Forum)

Texas, Indian & California Have Most New Technology Diesel Trucks . . .

Indiana, Utah & Oklahoma Have the Highest Percentage of New Diesel Trucks

Top 10 New Technology Diesel Trucks States by 2012 Total

1) Texas 286,045

2) Indiana 169,509

3) California 168,965

4) Illinois 115,125

5) Pennsylvania 113,020

6) New York 97,073

7) Florida 91,672

8) Ohio 88,671

9) North Carolina 72,286

10) Georgia 71,136

Top 10 New Technology Diesel Trucks States by 2012 Percentage

1) Indiana 44.0%

2) Utah 43.0%

3) Oklahoma 37.0%

4) Wyoming 36.9%

5) Texas 36.6%

6) Nebraska 34.0%

7) Louisiana 33.1%

8) Maryland 32.9%

9) Pennsylvania 32.8%

10) Montana 32.7%

Diesel Is the Overwhelming Power Source for the U.S. and International Economies

“Diesel power moves more than 82 percent of all cargo in the U.S. and over 90 percent worldwide,” Schaeffer said. “Diesel is the world's most efficient internal combustion engine. It provides more power and more fuel efficiency than alternatives such as gasoline, compressed natural gas or liquefied natural gas.

“Diesel also provides a unique technology platform suitable for expanded use of hybrid powertrains and lower-carbon renewable fuels - both strategies for reducing GHG emissions in the future.”

Connect with DTF

How do you keep up with the news on clean diesel? You can be a fan of DTF’s Facebook page, follow us on Twitter @DieselTechForum, or subscribe to our YouTube channel @DieselTechForum. You can also subscribe to Diesel Direct, a monthly publication featuring the latest clean diesel news and activities of the Diesel Technology Forum by emailing dtf@dieselforum.org.


The Diesel Technology Forum is a non-profit national organization dedicated to raising awareness about the importance of diesel engines, fuel and technology. Forum members are leaders in clean diesel technology and represent the three key elements of the modern clean-diesel system: advanced engines, vehicles and equipment, cleaner diesel fuel and emissions-control systems. For more information visit www.dieselforum.org.

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Media Inquiries:
Allen Schaeffer
Executive Director
(301) 668-7230

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