It is never enjoyable to find out a sound in your car that you don’t know the source of. So, what if you identify a loud noise that lasts on your Audi A3? It is extremely possible that this is a minor problem, but before beeing sure, it is better to operate some inspections. Whether that loud noise comes from the front of the vehicle, from the rear, whether it happens when you accelerate or when you are parked, our team has created this article to help you solve it. First, we will point out the possible explanations for the trouble according to when loud noise shows up on your Audi A3, and then we will look into the region of origin of the noise. In any case, if this noise persists, follow these instructions to help you find the source.
When does my Audi A3 make a loud noise?
One way to identify a noise from your Audi A3 is to establish when it appears. Indeed, some complications can be related to parts that are only stressed under certain circumstances. It is this method that we will focus on in this first part.
Loud noise Audi A3 when accelerating
Loud noise on Audi A3 that appears when you are accelerating can be symptomatic of several failures. Indeed, if you encounter a noise that is louder and louder when you accelerate, it can come from a faulty turbo that will generate a much higher noise than during normal process. Moreover, it is also highly possible that loud noise on your Audi A3 is linked to a wheel bearing, which is one of the most common origins of these types of symptoms. Another possibility 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.
When my Audi A3 is stopped
If your Audi A3 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 reason.
Where does loud noise come from on my Audi A3 and how can I be sure of its origin?
Now that we have defined the source of the noise, we will deal with the verification stage to ensure that this is the matter you are having.
The loud noise comes from the wheels of my Audi A3
As we have seen before, loud noise from the wheels of your Audi A3 may be related to two main problems. 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 remember 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 swap it or them quickly. If it is a deformed tire, remember to visually check the entire tread area for linearity. If it is the balancing of the wheels of your Audi A3 that is the issue, you will tend to feel a vibration in the direction of the vehicle as you go faster. In both situations, you will have to go to your mechanic to swap the tires or do a balancing.
The loud noise comes from the engine of my Audi A3
In case you have identified loud noise as coming from the engine of your Audi A3, the two most likely causes are turbo and air intake. In the first case, a turbo failure may also be connected to 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 Audi A3 is related to air intake, the check 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 cause 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 trouble, take your vehicle to your garage .
Loud noise comes from the exhaust pipe of the vehicle
If the noise you have discovered comes from the exhaust pipe of your Audi A3, it is highly possible that you have rust if your vehicle is old and has created holes in it over time and therefore generates a very high noise close to aircraft noise on your Audi A3, that a part has been cut off due to wear, or, finally, that a clamp has become loose due to vibrations. To verify this, get help from someone who will stand under the vehicle while you accelerate to find the exact area of origin 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.