An Environmental Defence report reveals that automakers and Toyota Motor and BMW as well haven't built fleets emitting less carbon dioxide.
The carbon dioxide emissions of vehicles from major automakers between 1990 and 2005 had been evaluated by the "Automakers Corporate Carbon Burdens" (PDF) 0rganization. In the report, Companies graded were: Ford Motor, General Motors, DaimlerChrysler, Toyota, Honda Motor, Nissan Motor, Hyundai Motor, Kia Motors, Volkswagen, BMW, Subaru and Mitsubishi Motors.
Environmental Defence, in a statement, said, "The rate of carbon dioxide emissions from new cars and light trucks in the U.S. dipped for the first time in two decades, but their overall contribution to global warming has continued to grow steadily since 1990".
The study depicts BMW gained a 12 per cent reduction in carbon dioxide across its entire fleet of cars. The drop and efficiency improvement is attributed to company's addition of the low carbon dioxide-emitting Mini Cooper to its line up by Environmental Defence.
Toyota ranked second, reducing carbon dioxide emissions by 3 percent overall during same period. The drop and efficiency improvement is assumed to the introduction of the Prius hybrid to its line up.
The emissions of cars and the number of cars sold are the factors that automakers make on "carbon burden" in the environment, reveals the report.
GM ranked No.1, reducing overall carbon burden by 6.5 percent. Environmental Defence did not assume this to GM's loss of market share. In contrast, Toyota increased its carbon burden by 125 percent increasing overall sales.