为了能够更加客观地得出测试结果，按照GB/T19233-28的标准，在转榖试验台架上模拟汽车在市区、市郊和综合的行驶环境下进行了燃油消耗量试验。相比HPS，采用耐世特EPS的汽车每行驶1公里能够节省约4.2%的耗油量,约.33升。EPS是一种直接依靠电机提供辅助扭矩的动力转向系统。与HPS相比，EPS完全摒弃了HPS所必需的动力转向油泵、软管、液压油、传送带和装于发动机上的皮带轮，不但维护保养上几乎没有什么要更换助力油、检查管道及阀门的繁琐，更重要的是，它完全不受发动机转速的影响，低速时，助力反而可以更大，而高速时，又可以降低转速甚至不工作，既节省燃油消耗、降低污染物排放，又大幅度地提升了车辆的舒适性和安全性。
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上弹式是按压盖板，盖板弹起来，再次按压，就会复位;下弹式是用弹簧拉伸密封芯下端的密封垫来密封。由于弹簧是由硼铁制成，容易锈蚀，弹性逐渐减弱，直至失效，寿命不长，另外弹簧容易缠绕毛发、织物，不易清理；吸铁石式：用两片磁铁的磁力吸合密封垫来密封。由于地面水水质很差，如洗刷物品、刷地等各种原因，污中会含有一些铁质杂质吸附在吸铁石上，一段时间后，杂质层就会导致密封垫无法闭合，另外由于地球大磁场的作用，磁力也会逐渐衰弱。
