It is never enjoyable to perceive a noise in your car that you don’t know the origin of. So, what if you discern a loud noise that continues on your Mercedes Cla? It is highly possible that this is a minor problem, but before beeing sure, it is better to carry out some verifications. Whether that loud noise comes from the front of the car, from the rear, whether it appears when you accelerate or when you are parked, our team has created this content to help you solve it. First, we will describe the possible explanations for the trouble according to when loud noise shows up on your Mercedes Cla, and then we will give attention to the region of origin of the noise. In any case, if this noise continues, follow these recommendations to help you find the origin.
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When does my Mercedes Cla make a loud noise?
One way to discern a noise from your Mercedes Cla is to determine when it shows up. Indeed, some concerns can be connected to parts that are only stressed under certain occasions. It is this method that we will focus on in this first part.
Loud noise Mercedes Cla when accelerating
Loud noise on Mercedes Cla that shows up when you are accelerating can be symptomatic of multiple failures. Indeed, if you feel a noise that is louder and louder when you accelerate, it can come from a faulty turbo that will create a much higher noise than during normal process. In addition, it is also highly possible that loud noise on your Mercedes Cla is linked to a wheel bearing, which is one of the most common origins of these types of signs of illness. Another alternative is that your exhaust pipe may have holes or a collar may have become loose. Finally, it is also possible that the problem may come from a deformed tire or an unbalanced wheel that will tend to vibrate as it increases speed.
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When my Mercedes Cla is stopped
If your Mercedes Cla makes a loud noise while not accelerating, engine on, the problem may be related to poor air intake. An air intake hose that has come loose or has a hole in it may be the induce.
Where does loud noise come from on my Mercedes Cla and how can I be sure of its origin?
Now that we have defined the cause of the noise, we will look into the verification stage to be sure that this is the matter you are encountering.
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The loud noise comes from the wheels of my Mercedes Cla
As we have seen earlier in this article, loud noise from the wheels of your Mercedes Cla may be related to two main disorders. If it is one of your tired bearings, it will tend to make a thumping noise that intensifies when it is under stress (spins faster and faster). So consider to examine by driving “fast” (neutral gear on and window open to hear only the noise of the wheels) that the noise is located here, if this is the case replace it or them as soon as possible. If it is a deformed tire, make sure to visually check the entire tread area for linearity. If it is the balancing of the wheels of your Mercedes Cla that is the matter, you will tend to feel a vibration in the direction of the automobile as you go faster. In both situations, you will have to go to your mechanic to swap the tires or perform a balancing.
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The loud noise comes from the engine of my Mercedes Cla
In case you have recognized loud noise as coming from the engine of your Mercedes Cla, the two most likely causes are turbo and air intake. In the first case, a turbo failure may also be associated with a compression loss during the engine ramp-up phase, so you should encounter a power loss during your acceleration. If the loud noise on your Mercedes Cla is related to air intake, the control will be done mainly visually, check all your air intake hoses by a visual control in your engine block to be sure that it is not damaged or disconnected which would generate an air intake, if it is just disconnected you can reconnect the air intake tubes yourself. Then examine that the engine idle speed is not random. In case you confirm one of these two disorders, take your automobile to your garage .
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Loud noise comes from the exhaust pipe of the vehicle
If the noise you have found comes from the exhaust pipe of your Mercedes Cla, it is highly possible that you have rust if your car is old and has created holes in it over time and therefore generates a very high noise close to aircraft noise on your Mercedes Cla, that a part has been cut off due to wear, or, finally, that a clamp has become loose due to vibrations. To validate this, get help from someone who will stand under the car while you accelerate to find the exact area of starting point of this noise. If it is a hole, you can repair it with a putty provided for this purpose, or, if it is a collar, “reattach” it. If it is cut or the hole is too big, it is better to get closer to your mechanic.
