Bindu Shajan Perappadan NEW DELHI: Greenpeace on Tuesday launched a campaign demanding mandatory fuel efficiency for the car industry in India and organised a demonstration at Connaught Place here to send out a reminder that increasing carbon dioxide emissions were contributing to climate change. As part of the campaign, Greenpeace has launched a nationwide awareness and petitioning drive for consumers to pressurise the Bureau of Energy Efficiency to draft the fuel efficiency legislation. "While consumers are aware of and even troubled by the noxious fumes and the pollution that vehicular emissions cause, they are not completely aware of the fact that vehicles emit carbon dioxide, a major greenhouse gas, which is the biggest contributor to global warming,' said Greenpeace climate and energy campaigner Soumyabrata Rahul. Statistics from the Indian Automobile Association rate India as the second fastest growing market for cars globally which will lead to an incredible surge in fuel consumption and carbon dioxide emission over the next few years.