WASHINGTON — Honda and Toyota offered U.S. consumers the highest average fuel efficiency of 2007 model year vehicles, the government reported yesterday.

The average fuel economy for 2007 vehicles was 20.2 miles per gallon, the same as 2006 vehicles, the Environmental Protection Agency said in an annual report that used new testing procedures.

For individual vehicles, the test results are included on window stickers in dealer lots. The agency said the overall results marked an increase compared with 2004 vehicles, which averaged 19.3 mpg.

Honda Motor Co. had the highest fuel economy of any manufacturer with 22.9 mpg, a slight drop compared with its 2006 lineup.

Toyota Motor Corp. posted a 22.8 mpg average for its 2007 vehicles compared with 22.4 mpg the previous year. Toyota's average was helped by the gas-electric Prius hybrid, which had the highest combined fuel economy of any passenger car at 46.2 mpg.

South Korea's Hyundai Motor Co., which includes Kia vehicles, improved to 22.7 mpg for 2007 vehicles, followed by Volkswagen AG with 21.4 mpg. Nissan Motor Co. showed the largest gain of any automaker during the past year, improving 0.6 mpg to 20.6 mpg.

General Motors Corp. led domestic automakers with 19.4 mpg, followed by Ford Motor Co. with 18.7 mpg. For the third straight year, Ford's Escape hybrid had the highest fuel efficiency of any light truck with 29.7 mpg.

DaimlerChrysler AG, which recently completed the sale of a controlling stake in Chrysler to private equity firm Cerberus Capital Management, was the lowest rated with 18.3 mpg, a mark that has been unchanged the past three years.

Among vehicle type, passenger cars averaged 23.4 mpg in 2007 — unchanged from 2006. Sport utility vehicles averaged 18.1 mpg, an increase of 0.3 mpg, and pickups were unchanged at 16.2 mpg.