回複：再想問各位高手一下。交通駕駛手冊上麵說MPG的最佳時速是55MPH

來源: 於 2010-08-31 09:45:23 [舊帖] [給我悄悄話] 本文已被閱讀：次

It depends on the transmission gear. In general the highest transmission gear is the most fuel efficient. So if your car shifts to highest gear at 60mpg then the car will be most fuel efficient over 60mph. Much higher than 60mph the wind resistance will cause fuel.