TOKYO -- The global economic slump had a mixed impact last year on Toyota Motor Corp.'s efforts to reduce the environmental footprint of its factories.
Carbon dioxide emissions and the amount of water Toyota's plants consumed fell in 2008 as the carmaker slashed output in line with tumbling demand.
But measured against vehicles produced and revenues, CO2 emissions and water use increased, according to Toyota's recently released Sustainability Report 2009, an annual review of environmental initiatives.
Last year Toyota emitted 145 tons of carbon dioxide for each ¥1 billion ($11.2 million) in sales.
That was up 11 percent from 131 tons in 2007 and the first increase in at least three years.
Water use climbed to 1,215 gallons per vehicle in 2008, from 1,083 gallons the year before, the first increase since at least 2004.
Toyota, renowned for its "eliminate waste" mantra, has long been trying to make its operations more environmentally friendly. That's done partly in the name of good corporate citizenship and partly in an attempt to cut costs.
But even Toyota's efforts to eliminate waste couldn't keep up with the economic downturn. The company cut global production 18 percent last year.
Still, the results weren't all gloomy.
Toyota made steady progress in increasing its recycling rate, lowering the volume of materials discarded per vehicle and reducing its use of packaging. Toyota also cut the per-unit emissions of volatile organic compounds in paint shops.