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July 22, 2021   |

Press Release

43.3 Percent of Commercial Trucks Operating in EPA Regions 9 & 10 Now Powered by Newest-Generation Near-Zero Emissions Diesel Technology

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As more of America’s commercial trucks of all sizes rely on the newest, cleanest diesel technologies, greater air quality and fuel savings benefits are being realized by communities across the country



July 22, 2021 (WASHINGTON, DC) – In the states that comprise EPA Regions 9 and 10, the newest, cleanest, near-zero-emissions diesel truck technologies now make up 43.3 percent of the diesel-powered commercial vehicles on U.S. roads, from box delivery trucks to 18-wheelers, according to the Diesel Technology Forum’s analysis of 2020 U.S. vehicles in operation data (Class 3-8) provided by IHS Markit.  The share of the new technology diesel trucks in the region expanded by 6.6 percent between July 2019 and December 2020.

“As more of America’s commercial trucks rely on the newest, cleanest diesel technologies, greater air quality and fuel savings benefits are being realized by communities across the country,” said Allen Schaeffer, executive director of the Diesel Technology Forum.  “As we wait for the promise of zero-emissions solutions to deliver in the future, the latest advanced diesel technologies will do the most today to reduce emissions.  These new findings reinforce the importance of the new generation of diesel in delivering vital societal benefits today in the here-and-now.  No technology is as vitally important to deliver needed clean air and lower greenhouse emissions from heavy-duty trucks right now to communities in need.”

Beginning in 2010, all new heavy-duty trucks have been equipped with selective catalytic reduction (SCR) and particulate control technologies.  These combine to achieve stringent new U.S. Environmental Protection Agency (EPA) emissions requirements for nitrogen oxide (NOx) emissions of no more than 0.20 grams per brake horsepower hour (g/BHP-hr).  This is in addition to particulate matter (PM) emissions levels of no more than 0.01 g/BHP-hr.

National Analysis

Nationwide, the newest, cleanest, near-zero-emissions diesel truck technologies now make up almost half of the more than 11 million diesel-powered commercial vehicles on U.S. roads, according to the Diesel Technology Forum’s analysis of 2020 U.S. vehicles in operation data (Class 3-8) provided by IHS Markit.

Since 2007, these newest-generation diesel trucks have eliminated 202 million tonnes of carbon dioxide (CO2), 27 million tonnes of NOx, and saved almost 20 billion gallons of diesel and 472 million barrels of crude oil.  Put into context, the emissions and fuel savings attributable to new-generation diesel engines in commercial trucks equates to making 43 million cars all-electric or creating 42,000 wind turbines on land five times the size of Washington, D.C.

By 2030, thanks to the continued increase of newest-generation diesel-powered vehicles, these savings are projected to grow to 1.3 billion tonnes of CO2, 47 million tonnes of NOx, 2.7 million tonnes of PM, 130 billion gallons of diesel and 3.1 billion barrels of crude oil.

According to Vehicles in Operation Data (2019-2020) from IHS Markit, a total of 15 states are at or above the national average for the percentage of clean diesel Class 3-8 commercial vehicles (all U.S.: 49 percent), and 23 states are growing their clean diesel fleets faster than the national average (all U.S.: 6.3 percent).  A full state-by-state breakdown is available on the Forum’s website at https://www.dieselforum.org/in-your-state.map of state rankings 2021

2021 HD Benefits Infographic

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About the Diesel Technology Forum

The Diesel Technology Forum is a non-profit 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 http://www.dieselforum.org.

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Key Contact

Media Inquiries:
Allen Schaeffer
Executive Director
aschaeffer@dieselforum.org
(301) 668-7230

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