美国政府近日最终确定将2025年小型汽车和轻型卡车的燃料经济性提高到54.5 mpg(英里/加仑.1英里≈1.609km,1加仑≈3.79 L)。该新标准使得新车的燃料经济性比目前路上行驶的汽车提高了近1倍。总体来说.燃料经济性 The U.S. government recently finalized to raise the fuel economy of small cars and light trucks by 2025 to 54.5 mpg (miles / gallon .1 miles ≈1.609km, 1 gallon ≈3.79 L). The new standard makes the new car fuel economy than the current car on the road increased by nearly 1 times. Overall, fuel economy