Why is My Car Loud When I First Start it? – Causes Explained + Solutions

If you have a car and it is running smoothly for some time, and you are all happy, but then one day you go to start your car and put the keys and start it, but there’s an unpleasant sound coming from within the car, and you think why is my car loud? Yes, you should be asking that question because that may be a sign of an issue.

There are many factors as to why is a car loud when you first start it. Factors like some parts of the car engine may not be receiving enough of the oil or fuel supply, worsened bearings, or some others. Let’s take a look at the causes of these and the possible solutions.

Causes and Solutions of Car Noises:

However, not all the factors listed here are direct warnings for your car, but they need to be dealt with as soon as you notice them. People ask why is my car loud when I first start it? So here is why.

1. Tapping Noise:

Cause: Your car engine isn’t receiving sufficient oil:

Among the most simple and assumable factors is the lack of proper oil supply to many car engine parts. Thus, when you keep your car dehydrated of oil for too long, it will cause the critical engine parts to stop working appropriately. That is why your car is loud when you first start it because the engine is not receiving the required fuel.


There is a vital engine part called Turbocharger whose job is to increase the influx of air inside the engine to power the car. The turbocharger requires fuel or oil to perform its tasks. So before this inductor becomes nonfunctional, you should perfectly lubricate the engine.

There is one thing to be careful of, which is that use the best quality of oil you can find. Because if you don’t provide enough oil, the engine will become noisy, if the wrong oil is used, the noise erupts, and if the oil is polluted in any way, the engine can face failure.

2. Knocking Noise:

Cause: Worsened bearings:

Are you hearing a knocking sound when you are starting your car and don’t know what that may be? That is a sound of trouble for your car. Because the bearings of the engine may have been loosened and starting to make knocking noise. This is a serious issue because if left unchecked for long, the bearing will come out, and the engine will become useless.


However, this is not gonna be a cheap process, and you cannot do it by yourself (not generalizing but mostly). You would have to go to a mechanic and let him do his job and be prepared; it will cost you more than average.

3. Buzzing Sound:

Cause: Belt problem:

If you are hearing the sound of buzzing from within the car engine, that may be a sign of a belt issue. This means that you may have seen many revolving belts inside the engine that keep the engine operating correctly. These belts can break or get more extended than usual with passing time.


This is something you should not get your hands on. It is a critical engine thing, and that is why the best course of action would be to change these belts and, more importantly, get them changed in a mechanic shop.

4. Crackling Sound:

Cause: Dieseling:

You may hear a crackling sound when you turn off your car engine. In other words, if you have a car, you may have wondered why is my car loud even after I turned it off. That’s because there is still some fuel inside the cylinder that keeps the engine on for some time and then turns off with a crackling sound.


This issue is mainly found in old cars and is rarely found in cars nowadays. You can avoid this by using high-quality diesel for your car, and carbon removing solution should be used to clean the engine from the inside.

5. Screeching Noise:

Cause: Belt issue, steering issue, breaking issue:

This is, more or less, the same sound as mentioned above in the belt problem. Screeching noise is never a pleasure to hear, whether it is from someone like humans or something like cars. This sound indicates that either the breaks or the steering have trouble functioning correctly due to the same belt which is responsible for operating the car engine.


You can go for lubricating these belts to avoid corrosion for the short term, but that is only good for some time as sooner or later, you will need to do it again. The long-term solution is simple; change the breaks or the belt. By doing so, you would be saving your car from costly aftermath.

6. Ticking Sound:

Cause: Worsening Constant Velocity joints:

The Constant Velocity joints are a medium between the steering and the tires; like when you rotate the steering, the CV joints rotate the wheels accordingly. That means when these CV joints are starting to become useless and are worsening with time, it is evident that you notice fewer changes in the sounds than regular, like ticking sounds when you are turning your car. How to avoid it?


You would have to see if the CV joints are entirely loosened or not. That’s because CV joint failure can be fixed in the early stages, but if the problem escalates, you can’t fix it; you will have to change it. It is a costly procedure and can cost you around 200$ to 800$, depending on whether you seek mechanical services or do it yourself.

7. Roaring Sound:

Cause: Broken or damaged exhaust muffler:

While driving, if you hear some growling sound from the back of your car and don’t know what it is. It is an exhaust muffler issue. What happens is that if there is a hole or any kind of leak in the exhaust of the car, the growling sound is coming from there. The exhaust’s job is to keep the unnecessary noises down, and when it is damaged, those noises will come and haunt you!


Not only is it bad for the car and its driver, but it is also a piece of bad news for the surroundings and environment because the CO is being let out without any interruption. That is why you must take immediate action and try to change the exhaust muffler as soon as you can. Or better, take it to a mechanic if you can afford that and make him do the job. There would be little room for any mistake that way.

Still, why is my car loud? Concluding the point:

All the sounds as mentioned above are a sign of a problem for the car engine, and you should act swiftly to ensure its safety. It is better and always cheap to have knowledge about fixing these issues yourself. Because not everyone can afford to seek mechanical services.

However, minor issues like oiling the engine can be done at home or garage. Still, significant issues like CV joint failure or others require expert insight, and you should take your car to a mechanic for fixing and avoiding any more problems.

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