By 2016, if the new rules take effect as planned, new passenger cars sold in the U.S. will have to meet an average mileage requirement of 39 MPG, up from 27.5 MPG currently.

到2016年前，如果新的规定如期生效，在美销售的新轿车必须满足每加仑39英里的平均标准，高于目前的每加仑27.5英里。

youdao

By 2016, if the new rules take effect as planned, new passenger cars sold in the U. S. will have to meet an average mileage requirement of 39 MPG, up from 27.5 MPG currently.

到2016年前，如果新的规定如期生效，在美销售的新轿车必须满足每加仑39英里的平均标准，高于目前的每加仑27.5英里。

youdao

Federal fuel economy standards languished in Congress, and average vehicle mileage dropped to its lowest level in decades, but the Prius showed people that another way is possible.

美国国会的燃油经济标准已每况愈下，而且车辆的平均里程数也跌至数十年来的谷底，但Prius油电混合车的问世，显示人们还可以另有选择。

youdao

Another subsidy is in the works, in the form of a mileage rating of 100 mpg -- allowing GM to make and sell that many more low-mileage SUVs under the cockamamie "fleet average" mileage rules.

WSJ: Obama's Car Puzzle

By setting up a few simple Excel formulas (nothing more complicated than addition and division, you can see what they look like in this sample spreadsheet), you can not only track your maintenance data (what the mechanics did, when they did it, how much it cost, and what the mileage was at the time) but also see your average daily mileage during each period between servicings.

CNN: Use your Mac to track your money

But they won't sell in large enough numbers to significantly boost their average fleetwide mileage.

FORBES: Magazine Article