某些汽车经过环保署评估的mpg值比车主们在实际使用中的高许多。差距最大的汽车中甚至包括了一些高能效的车型,尤其是混合动力汽车。当对比不同类型汽车的燃料能效时,消费者往往依赖于窗口标签上的mpg(每加仑汽油行驶的英里数,数字越大能效越好)数值。在美国,法律要求汽车制造商在出售所有新车的玻璃窗上必须贴上经 The mpg values ​​of some cars evaluated by the EPA are much higher than those actually used by the owners. The cars with the widest gaps even include some energy-efficient models, especially hybrids. When comparing the fuel efficiency of different types of vehicles, consumers tend to rely on mpg (miles per gallon of gasoline, the better the number, the better the energy efficiency) on the window label. In the United States, the law requires car manufacturers to affix their sights on the glass windows that sell all new cars