Most of their mileage is in and around town.

他们开车大多数时候是在城里和城市周边转悠。

They are willing to pay up to $500 more for cars that get better mileage.

他们愿意多出500美元来购买更省油的汽车。

It's obviously important to get as much mileage out of the convention as possible. [+ out of/in]

很明显，从这项协议中获取尽可能多的利益十分重要。

The administration clearly decided there was no mileage in provoking a huge row with Congress.

显然，政府认定和国会大起冲突是没有好处的。