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美国铝业公司（Ａｌｃｏａ）就钢体和铝体汽车在整个寿命周期内的能量消耗进行了对比分析，表明：使用铝材可以使车体重量减轻４０％，相当于汽车总重量的１０％，如果汽车的其它系统重新进行减重后的设计，就可使汽车总重量减轻２５％；铝体汽车与钢体的相比，在整个寿命周期内能耗减少２５％；整个寿命期间铝体与钢体汽车相比所产生的ＣＯ２也少得多；由于使用铝使得车体大大减轻，导致燃料消耗量和ＣＯ２排放量大大减少，有利于环境保护，同时又保持了安全性、舒适性、耐用性等各种性能。
Alcoa conducted a comparative analysis of energy consumption over the life of steel and aluminum cars, showing that using aluminum can reduce body weight by 40%, equivalent to 10% of the total car weight, Reducing the overall weight of vehicles by 25% can be achieved if the rest of the car is re-engineered to lose weight; aluminum cars consume 25% less energy over the life of the body compared to steel; Compared with steel cars, the generated CO2 is much less; the use of aluminum greatly reduces the size of the car, leading to a significant reduction in fuel consumption and CO2 emissions, which is conducive to environmental protection while maintaining safety, comfort and durability Sex and other performance.