回复：再想问各位高手一下。交通驾驶手册上面说MPG的最佳时速是55MPH

来源: 于 2010-08-31 09:45:23 [旧帖] [给我悄悄话] 本文已被阅读：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.