Do you hear a metallic noise on your Mercedes A class every time you drive? We know that this is not relaxing and that you are wandering. Finding out such a noise is not always a good indication, but it may also be nothing severe. To support you remedy this issue, our team has decided to prepare this content to help you in this search. In order to carry out this research as efficiently as possible, we will first look at the plausible sources of metallic noise in the front of your vehicle, and then, if the metallic noise comes from the rear of your vehicle.metal-noise-mercedes-a-class

Metal noise Mercedes A class coming from the front end of the vehicle

I hear a metal rattling noise coming from wheels

  • Metallic noise caused by your bearing
  • One of the probable causes of metal noise manifestations on your Mercedes A class, may be that one of your bearing is tired, it will frequently generate a loud noise that increase when stressed (turns faster and faster). So please remember to examine by taking speed (neutral gear and window open to concentrate only to noise of the wheels) that the noise is well based here, if this is the case change it or them fairly quickly. If, on the other hand, this noise only manifests itself with an engaged speed, read this report on loud noise on Mercedes A class, you will most likely find a solution to your issue.

  • Metalic noise coming from brake
  • If you encounter a metalic noise on Mercedes A class and you have the feeling that it comes from your front wheels, it is highly plausible that it is your pads or discs that are the trigger. In fact, a disc or a set of dead plates will generate a strong metallic friction noise that you will inevitably feel. To examine this, put your vehicle on safety stand, and examine the condition of your discs and pads by getting rid of the wheel. If they are involved, change them promptly , otherwise you will no longer be able to brake. If you feel a metallic noise from your vehicle, and you want informations about it, browse this article for more info about brake noises on xxx.

  • Stabilizer bar worn
  • If it is rather when you are turning, passing over a bump or sidewalk that you hear a metallic noise on your Mercedes A class, then your rods may be worn. Whether it is the steering or the stabilizer bar, their wear will cause a metallic snap when they hit or change direction. To examine this, put yourself under your vehicle, without the wheels, and move your rods, if they only oppose very little force it is likely that they will have to be changed. If this is your case, we encourage that you consult this content for a complete guide about steering noises on Mercedes A class.

Other sources


  • Engine silentblock
  • A bit like worn stabilizer bar, if your engine silent blocks are damaged, you will feel as you pass over damaged roads or sidewalks, loud metallic noises on your Mercedes A class. Once screwed up, they will no longer accomplish their role as shock absorbers and, with each impact, or violent acceleration, a noise will occur. Therefore, keep in mind to examine their status and change them if needed. Feel free to have a look at this content which is a complete file about strut mounts noises on Mercedes A class, how to examine their condition and replace them.

  • Dead gearbox, or broken pinion
  • Finally, the last typical trigger of metallic noise on Mercedes A class. It’s because your transmission system is the origin. It is conceivable, either because of improper use of the gearbox or because of excessive wear, that some gears in your gearbox have broken and are wandering around in it. They will then develop a continuous metal rattling noise. That you shouldn’t feel in neutral. If this is your case, we encourage that you browse this detailed guide on the origins of steering noises on Mercedes A class.

Metallic noise Mercedes A class coming from the rear end of the vehicle

Exhaust pipe

If, on the other hand, you discern an exhaust noise that is more of a metallic type, it is plausible that one or more parts of your exhaust may be damaged. In fact, it is plausible that either the catalyst or the silencer may be the trigger of this noise. To be sure, go under the vehicle, cold, and knock each of the previously stated units with a hammer to identify the origin of the noise. You should hear things moving in the problematic part, if it’s the exhaust baffles, you can try to hammer in the section a little to try to block them and limit their movements. If it is a dead catalyst, it will be necessary to consider changing it, as well as the silencer. In this case, to eliminate the metallic noise on your Mercedes A class, you will either have to find a second hand one and do it yourself, or go to your mechanic.

Noise from wheels

  • Bearings
  • As for the bearings of your vehicle, it is plausible that with wear they are at the origin of your metallic noises on your Mercedes A class. Go a little further up in the article content where you will find details of the solution already exposed for the front part of the vehicle.

  • Brake pads or discs
  • Finally, if the noise originates from your discs brakes or pads, you should refer to the part in question in the first section of this manual.