n
[C usually singular, U]
the number of miles a vehicle has travelled since it was made
　Always check the mileage before you buy a secondhand car.
[C usually singular, U]
the number of miles someone travels in a vehicle in a particular period of time
　Look for a car hire agreement that offers unlimited mileage.
[C usually singular, U]
the number of miles a vehicle can travel using a particular amount of fuel
　The car's average mileage is 22.73 miles per gallon.
[U]
the amount of use or advantage you get from something
　The newspapers wanted to get as much mileage from the story as they could.
[C usually singular, U]alsomileage allowance
an amount of money that is paid to someone for each mile that they travel when they use their own car for work
　Community nurses are paid a mileage allowance.
[U]
the number of miles that is covered by a country's roads or railways
　plans to treble the country's railway mileage