U.S. regulators have unveiled fuel economy labels they say will make it easier for new car buyers to compare fuel-efficient vehicles and gas-guzzlers.

Announcing the biggest change to the window stickers in 30 years, the U.S. Environmental Protection Agency and the Department of Transportation said more comprehensive information detailing projected fuel costs and emissions will appear on 2013 model year cars and trucks, the Los Angeles Times reported Wednesday.

"Reducing our consumption and demand for oil is the best way to reduce upward pressure on fuel prices," EPA Administrator Lisa Jackson said. "A new generation of cars requires a new generation of fuel economy labels."

The labels will still show estimated annual fuel costs as well as mpg figures for city and highway driving, but will also indicate, on a scale of 1-to-10, how a vehicle stacks up against competitors for smog, tailpipe emissions and fuel economy.

The 1-to-10 ranking could have a direct impact on car sales, Jack Gillis of the Consumer Federation of America said.

"It won't take long for the car companies who offer vehicles with 9 and 10 ratings to reap the rewards," Gillis said. "On the other hand, it's going to be pretty difficult to sell a vehicle with a 1 or 2 rating, when consumers can readily see the alternatives."

With automakers having the option of using the labels for 2012 model year cars, the new stickers could be in showroom as soon as this year, the Times reported.

earlier related report
Toyota, Honda global output halved after quake
Tokyo (AFP) May 27, 2011 - Japanese auto giants Toyota and Honda saw global production halved in April as the March 11 earthquake and tsunami ravaged supply chains, the companies said Friday.

Honda reported a 52.9 percent year-on-year drop in worldwide production and an 81.0 percent slump in domestic output, while Toyota said global production was down 48.1 percent.

The quake and the resulting tsunami shattered component supply chains and crippled electricity-generating facilities, including a nuclear power plant at the centre of an ongoing atomic emergency.

Amid power and parts shortages, Toyota had announced production disruptions domestically and in the United States, Europe, China and Australia because of the crisis, temporarily slowing output or shutting plants.

The company announced a year-on-year drop of 15.4 percent in its global sales figures for April.

Honda, which was forced to temporarily suspend all production at its Japanese sites, said domestic sales were down 46.3 percent on year while exports dropped 76.2 percent.

"The figures are pretty much along the lines of what we had expected. The months of March and April are the most severely hit by the disaster," Ryoichi Saito, an auto analyst at Mizuho Investors Securities, said.

"In April, we saw auto plants operating for only about half the month, about half the capacity."

Many component manufacturers that are key to auto production are based in the worst-hit regions of Japan, their facilities damaged by the 9.0 magnitude earthquake or inundated by the giant wave that followed.

While most plants resumed production by mid-April, operations remain well below capacity and analysts warn parts shortages could go on for months, with the threat of summer power shortages also casting a shadow.

Honda said it expected production volume in Asia and Oceania to start picking up in July, the carmaker's Asian Honda Motor Co. unit said.

The company said in a statement it expects its production in Asia and Oceania "will be normalised during the August to September time period at almost all auto plants in the region", Dow Jones Newswires reported.

The picture looked less gloomy for Nissan Motor Co., however, which makes up Japan's big three automakers alongside Toyota and Honda.

The company said global production in April had decreased 22.4 percent on-year but announced a 4.4 percent rise in worldwide sales, marking an all-time record for the month of April.

"Production is picking up earlier than expected, and I expect auto production will recover considerably in June," Saito told AFP. "Auto part makers for Toyota have also said their production will come to about 90 percent of what it should be by June. I'd say production bottomed out in April and will start recovering in May."

Nissan plans to manufacture around 98,000 vehicles in Japan next month, the Nikkei daily said, nearly unchanged from the year-earlier 100,000 or so. And its projected June-November output of roughly 560,000 units is only slightly lower than the 590,000 units of a year earlier.

Total domestic auto output in fiscal 2011 is on course to reach around eight million units, the report said, just 10 percent off the figure for 2010.

The woes of Japan's automakers have been in stark contrast to overseas rivals. South Korea's Hyundai last month posted a 47 percent rise in first quarter net profit on higher prices and strong demand.