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Feds: New Clean Diesel Cars, Light Trucks to Help Reduce GHG Emissions, Improve Fuel Economy

Advancements in emissions control technology in clean diesel passenger cars and light-duty pickup trucks will have a positive effect on efforts to reduce future Greenhouse Gas Emissions, according to the federal government’s newly-released Draft Technical Assessment Report (TAR).

The U.S. Department of Transportation (DOT), the EPA and the California Air Resources Board (CARB) released the mid-term evaluation of the National Program for greenhouse gas emissions and fuel economy standards for light-duty cars and trucks. The Draft TAR, which covers vehicle model years 2022-2025, confirms that automotive manufacturers are introducing new technology to market at a rapid pace, and predicts that the MY 2022-2025 standards are achievable with a wide range of technologies.

According to the midterm evaluation: “Despite recent EPA and California ARB compliance actions with respect to light-duty diesel NOx emissions, diesel engines remain a technology for the reduction of GHG emissions from light-duty vehicles. Advances in NOx and PM emissions control technology are bringing light duty diesels fully into compliance with Federal Tier 3 and California LEV III emissions standards at a cost that is competitive with the cost-effectiveness of other high efficiency, advanced engine technologies.”

“We’re extremely pleased that EPA, DOT and CARB recognize at this time especially the Greenhouse Gas emissions improvements in new and future clean diesel technology and fuels,” said Allen Schaeffer, executive director of the Diesel Technology Forum. “Automakers and engine manufacturers have invested billions of dollars in diesel research and development to significantly improve the fuel efficiency and emissions from modern diesel vehicles.

“And while the Draft TAR specifically highlights advanced gasoline vehicles as being the primary source for achieving future fuel efficiency levels, we believe that new clean diesel engines will also play a key role in reaching the 2025 mileage goals,” Schaeffer continued.

“Achieving the increased fuel economy standards is going to be difficult. This is a tremendous challenge for the industry,” he said. “However, today clean diesel cars average about 30 percent better fuel economy than their gasoline counterparts. In the light duty truck sector, new clean diesel pickups are achieving higher mpg levels and for the first time a diesel pickup truck has reached the 30 mpg highway level.”

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