U.S. clean diesel car sales have increased 25 percent during the first six months of 2014, according to data compiled by Hybrid Cars.com and Baum and Associates.
Despite this number, the overall U.S. car market has increased by 4.2 percent, according to the research.
"Sustained and mostly double-digit increases in sales each month over a four year period prove that U.S. consumers are embracing the benefits of clean diesel technology and its proven, high fuel efficiency, great driving performance, and long-term value," said Allen Schaeffer, the Executive Director of the Diesel Technology Forum, according to a joint release issued by the companies.
The sales information comes after data collected by IHS Automotive for the Diesel Technology Forum released in June.
The IHS Automotive data that showed that clean diesel vehicle registrations, which includes cars, SUVS, vans and pickups, increased by 30 percent from 2010 through last year.
"The consistently positive sales trends for clean diesel are particularly noteworthy since they have occurred over a recessionary economic period when diesel fuel prices have trended upward, and consumers have many more fuel efficient vehicle choices than ever before," said Schaeffer. "Today, the clean diesel choices include 27 cars and SUVs, nine vans and 10 pickup trucks. We expect that number to nearly double in the next 18 months, and we expect that more models in more brands will only generate higher sales in the future."
Schaeffer added that Americans are looking for more fuel efficient cars and that they are learning that clean diesel vehicles are more fuel efficient than gasoline counterparts.
New federal fuel efficiency standards will require a 54.5 mpg average by 2025. Auto manufacturers are expected to introduce more diesels in the U.S. to help meet these standards.
"While diesel cars and pickup trucks make up only three percent of the overall U.S. vehicle market, most analysts predict continued growth in the U.S., with many believing the diesel market will double by 2018," said Schaeffer.
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