mileagemile·age /ˈmaɪlɪdʒ/ noun [uncountableU]1an amount of money paid for each mile that is travelled by someone using a car for workThe mileage allowance for use of a personal car for business is up to 44 cents a mile.
2the amount of use or advantage that you get from somethingManagers are working furiously on ways to get the most mileage out of the plan.