HONDA AND TOYOTA OFFERED U.S. CONSUMERS THE HIGHEST average fuel efficiency of 2007 model year vehicles, the government reported Wednesday. 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.