gasoline mileage

1. Using a higher octane gasoline than that will not make your car achieve better mileage, move faster, run cleaner or improve its operations in any way.
   使用高辛烷值汽油，将会让你的车没有达到更好的里程，移动得快，跑的清洁剂或提高其运营有任何影响。
2. SC: Do different grades of gasoline make a difference to your car and its mileage?
   不同等级的汽油会使车辆跑不同的历程？

noun

1. the ratio of the number of miles traveled to the number of gallons of gasoline burned

   Synonym:    mileagefuel consumption rategas mileage