Environmental Vehicle Fuel Economy Up for the First Time Since March by Gary Kopycinski on September 6, 2012 Gary Kopycinski Author More in Environmental: People Outside Will Be Injured: Severe Thunderstorms Strike Park Forest March 31, 2026 Park Forest Officials Urge Residents to Protect Pipes as Coldest Air of the Season Continues December 14, 2025 Park Forest Workshops Join Global Effort to Prevent Bird Collisions August 21, 2025 ANN ARBOR, Mich.–(ENEWSPF)–September 6, 2012. Fuel economy of all new vehicles sold in the United States is up for the first time in five months, say researchers at the University of Michigan Transportation Research Institute.