这类似于美国联邦贸易委员会的规则，他要求汽车制造商告知用户每加仑的汽车所能获得的里程数——无论你是驰骋在城市或是在乡村。
It would be similar to Federal Trade Commission rules that require auto manufacturers to say how many miles per gallon cars get whether a person is driving in the city or in the country.
汽车品牌和型号不同，行车里程也不同，虽然根据经验车的引擎越小每加仑油可行使的里程就越长。
Mileage differ between car makes and models, although a good rule of thumb is that you should get more miles per gallon if your car has a smaller engine.
最近在2005年，营销信息公司JD电力的研究发现，美国买家更关心新车型的杯架个数，而非每加仑汽油的里程数比例。
As recently as 2005, research by JD Power, the marketing information company, found that US buyers cared more about the number of cup holders in a new vehicle than its miles-to-gallon ratio.
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