80后可能都会有一个特别深的印象，就是小时候汽车的后车窗，经常会看见贴着两个字“磨合”。也就是新车刚出厂，或者刚大修完的汽车，零配件需要一定时间的磨合运转，车子不能开太快，提醒后车注意。
随着时代的进步，现代的汽车，技术很先进，我们已经见不到车后窗还有贴“磨合”标志了，那新车是不是不需要磨合了呢？电动汽车是不是不存在磨合的概念了呢？本期《流言终结者》将为大家验证这些留言的真伪，我们邀请行业汽油专家凯撒，为大家做更专业的解读。
● 现代的新车还需要磨合吗？
首先，我们先来聊聊传统能源的汽油车，新车要不要磨合？可以肯定的告诉大家，即便是目前新车技术已经足够先进，但新车仍然是需要磨合的。汽修专家凯撒告诉我们，一辆汽车实际上分为初生期、性能期和衰减期。而通常我们说的磨合，就是汽车的初生期。也就是说，刚出厂的汽车，传动系统、缓冲系统都是需要磨合的。
刚出厂的车机油粘度高，新机器初运行，各个零件的加工痕迹磨光并密合的过程。另外，新车刚出厂，部分零部件在机械加工过程中，会产生一定的内应力，其可能致零部件产生一定量的变形。只有随着汽车运行时间增长，内应力才会逐渐稳定。
● 新车磨合期该注意什么？
那么这个磨合时间到底需要多久呢？凯撒告诉我们，一般车辆需要5000公里的磨合，超过5000公里才是出了初生期，进入性能期。在磨合期内，对于行驶系统的磨合，我们应该注意缓踩油门，轻踩刹车，发动机转速最好不要超过3000转（这也对高速会有限制）。切忌急加速、急减速，暴力驾驶，过重负载。尤其是小排量车型，切忌拉过多的人和重物，造成严重的负载。
对于缓冲系统，我们也要注意日常用车保养，切忌快速通过减速带。同时，我们也要避免骑到较高的台阶上停车，这些都会对悬架产生冲击。此外，在购买新车后，我们也要多研究说明书，说明书往往会对车辆的磨合有进一步的说明。
● 如果磨合期不注意会出现什么问题？
如果在磨合期，盲目的暴力驾驶，对车的伤害是非常大的。以凯撒多年的维修经验来看，在磨合期没有注意养护的车辆，往往会出现发动机抖动，中低端车型出现减震硬的问题（套筒不工作）。
● 通过磨合期后，车辆性能需要不断提升
当我们平稳地度过初生期后，也需要适当的对车辆的性能进行开拓，也就是我们通常提到的新车拉高速，这样车辆的性能才会变得更好。通常高速情况下，车辆的负载会变大，这时候就可以提高车辆的性能。
● 电动车到底需不需要磨合？
很多人都有一个错误的观念，认为纯电动车没有发动机，就可以不用磨合了。事实上，电动车也是需要磨合的。电动车与汽油车的磨合范围也是相同的，分为传动系统与缓冲系统。缓冲系统，电动车与汽油车几乎没有区别，相同的道理。而传动系统，两车确实有区别，但电动机同样也需要磨合。磨合不好，也会出现动力差，或者异响的现象发生。
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