本试验程序的目的是为用户提供一个标准试验程序，用于评估给定车辆的相对燃油经济性。试验程序采用反映车辆运行不同模式的试验循环，并为评估这些模式对车辆燃油经济性的影响提供依据。燃料可以通过重量或体积来测量。燃油经济性以mpg表示。

The objective of this test procedure is to provide the user with a standard test procedure for evaluating the relative fuel economy of given vehicles. The test procedure employs test cycles which reflect different modes of vehicle operation and provides the basis for evaluating the effects of those modes on fuel economy of the vehicle. The fuel can be measured either by weight or by volume. Fuel economy is expressed in mpg.