Mileage = Miles

[uls]

if by the book, yes, it refers to miles

http://www.thefreedictionary.com/mileage

mile·age also mil·age (mlj)
n.
1. Total length, extent, or distance measured or expressed in miles.
2. Total miles covered or traveled in a given time.
3. The amount of service, use, or wear estimated by miles used or traveled: This tire will give very good mileage.
4. The number of miles traveled by a motor vehicle on a given quantity of fuel.
5.
a. An allowance for travel expenses established at a specified rate per mile.
b. Expense per mile, as for the use of a car.

but "mileage" is used loosely here

it's understood naman by everyone here when we use the word "mileage", it refers to the odometer reading which happens to be in km.

if you wanna be technical correct, use "kilometerage" nalang hehe

parang dun sa isang thread, pinagtatalunan kung ano ang "Japan surplus"

everyone knows it means Japan used

pero technically surplus doesnt mean used

same banana