First: Abnormal noise during cold start

一个被官方承认的原因：凸轮轴调节器存在设计缺陷，在质保期内损坏免费更换，但是如果超过了质保期则需要车主自掏腰包，而且更换费用不菲。

One officially recognized reason is that the camshaft adjuster has a design defect and is damaged during the warranty period for free replacement. However, if it exceeds the warranty period, the owner will need to pay for it at their own expense, and the replacement cost is expensive.

第二：燃油泵存在隐患

Secondly, there are hidden dangers in the fuel pump

这也是得到奔驰认可的一个通病，而且今年也为此召回了数十万台E级、C级等车型。在高温天气下容易引发车辆自燃，所以各位车主一定要认真对待。

This is also a common problem recognized by Mercedes Benz, and hundreds of thousands of E-Class, C-Class and other models have been recalled this year. In hot weather, it is easy to cause vehicle spontaneous combustion, so all car owners must take it seriously.

第三：四轮定位容易失准

Third: Four wheel alignment is prone to misalignment

这也是奔驰汽车普遍存在的一个问题，涉及到了旗下的多款车型，虽然这是所有汽车终会出现的问题，但是奔驰汽车四轮定位失准的频率较高，间隔时间较短，如果您发现自己的方向盘变得沉重不好回正，轮胎出现偏磨现象，那就是这个问题啦，除了重新进行四轮定位之外，可能还需要更换悬挂胶套。

This is also a common problem in Mercedes Benz cars, involving multiple models under its umbrella. Although this is a common problem for all cars, the frequency of four-wheel alignment misalignment in Mercedes Benz cars is relatively high, and the interval time is short. If you find that your steering wheel becomes heavy and difficult to return to normal, and the tires show eccentric wear, then this is the problem. In addition to re aligning the four wheels, you may also need to replace the suspension rubber sleeve.

第四：喷油器脏污

Fourth: Dirty fuel injector

一到冬天就能经常看到冒黑烟的奔驰汽车，很多不太懂行的车友会以为是烧机油，其实关键原因是奔驰的喷油嘴很容易出现脏污的现象，同时会引发启动障碍、怠速发抖、动力下降甚至发动机无法启动的问题，同时会加速积碳生成，这一点很多奔驰车主也在网上探讨过，其实定期进行清洗或者使用燃油添加剂就能解决。

In winter, Mercedes Benz cars that emit black smoke can often be seen. Many inexperienced car enthusiasts may think that they are burning engine oil, but the key reason is that Mercedes Benz's fuel injection nozzle is prone to dirt, which can cause starting difficulties, idle shaking, power loss, and even engine failure to start. At the same time, it can accelerate the generation of carbon deposits, which many Mercedes Benz car owners have also discussed online, In fact, regular cleaning or the use of fuel additives can solve the problem.

第五：转向机漏油

Fifth: Steering gear oil leakage

这也是奔驰汽车一个比较常见的通病，因为保有量的关系，普遍出现在国产的各款奔驰汽车上，老款的奔驰S级也容易出现这个问题，漏油后会出现打方向沉和异响现象，这时候除了要补充助力油之外，还需要更换油封。

This is also a common problem in Mercedes Benz cars, as it generally occurs in various domestic Mercedes Benz cars due to the ownership. The older Mercedes Benz S-Class is also prone to this problem, and after oil leakage, there will be directional sinking and abnormal noise. At this time, in addition to supplementing the booster oil, the oil seal also needs to be replaced.

第六：减震器断裂

Sixth: Shock absorber fracture

这件事儿已经出现了三年左右，普遍出现在国产E级、C级、GLA、GLC等车型上，故障原因就是奔驰前减震器插头有设计缺陷，拖了两年之后，现在奔驰也已经做了召回处理，但是处理的方案并没有完全公布，希望奔驰不要学当年的大众汽车，仅仅是打上一块补丁敷衍了事，因为这直接危及到了车主的生命安全。

This incident has been happening for about three years, commonly on domestic E-Class, C-Class, GLA, GLC and other models. The cause of the malfunction is a design defect in the front shock absorber plug of Mercedes Benz. After two years of delay, Mercedes Benz has also carried out a recall, but the solution has not been fully announced. We hope that Mercedes Benz will not imitate Volkswagen back then and only apply a patch to perfunctory work, Because this directly endangers the safety of car owners.

第七：水泵损坏渗漏冷却液

Seventh: Damaged water pump leaks coolant

这个故障普遍出现在老款的奔驰汽车上，但是至今也困扰着不少的奔驰车主，并且会因此引发节温器故障，在冬天属于高发时期，普遍出现在车龄四年左右，或者行驶里程七万公里的奔驰车上，症状是一开暖风、除雾风功能后，发动机温度就会调到60度左右，这会直接影响到发动机的使用寿命。

This fault commonly occurs in older Mercedes Benz cars, but it still troubles many Mercedes Benz owners and can cause thermostat failure. In winter, it is a high incidence period, commonly seen in Mercedes Benz cars that are about four years old or have a mileage of 70000 kilometers. The symptom is that once the heating and defogging functions are turned on, the engine temperature will be adjusted to around 60 degrees, which will directly affect the service life of the engine.

第八：火花塞寿命短

Eighth: Short spark plug life

奔驰汽车的火花塞寿命短，这也是一个普遍性的问题，会导致车辆的动力下降、加速时车身抖动、排气声变化、怠速抖动等现象，作为一个奔驰车主，官方建议4万公里更换火花塞。此外，老款奔驰还存在制动开关损坏、空气流量计等故障。

The short lifespan of spark plugs in Mercedes Benz cars is also a common problem, which can lead to a decrease in vehicle power, body vibration during acceleration, changes in exhaust noise, idle vibration, and other phenomena. As a Mercedes Benz owner, the official recommendation is to replace spark plugs after 40000 kilometers. In addition, the old Mercedes Benz also has faults such as damaged brake switches and air flow meters.