Updated at: 08-08-2022 - By: Lucas

Is your muffler suddenly becoming really loud, and you’re wondering what’s wrong? If so, you’ve come to the correct place.

There could be a number of causes for your muffler to suddenly become so loud. This article will explain why your muffler is so noisy. Make sure you read all the way through so you don’t miss anything.

Why is my muffler so loud?

One of the most common causes of a suddenly loud muffler is a broken muffler caused by a collision on the road. Rust and loose parts might also be the source of a noisy muffler.

The exhaust system in contemporary cars may last for more than 100,000 miles without failure. So, if your automobile is brand new and the muffler has suddenly become extremely noisy, chances are you hit something while driving that destroyed the muffler.

However, if your vehicle has beyond 100,000 miles, other factors such as rust or missing pieces may cause the muffler to become noisy.

Why is my muffler so loud when I accelerate?

Muffler Making Loud Noise

The following are possible causes of a loud muffler while you accelerate.

Loose exhaust system components

One of the most common causes of your muffler being excessively loud as you accelerate is because critical components in the exhaust system have gotten loose.

The exhaust system consists of critical components such as the exhaust pipe, rubber hanger, exhaust connections, and exhaust bracket.

If any of these components becomes loose and comes into contact with the muffler, it may produce a rattling noise, particularly when you step on the gas. Furthermore, if your vehicle strikes a hole, the muffler is likely to shatter, resulting in a loud acceleration.


Mufflers, like other metal components, corrode over time as a result of moisture exposure. Rust can cause small holes to emerge that progressively grow in size. So, if your muffler becomes louder over time, the cause could be rust.

How do you fix a noisy muffler?

If your muffler is noisy, it is likely that some parts are broken and must be repaired. As explained below, there are several ways to repair a noisy muffler.

Change the damaged part

If your muffler is noisy, you don’t have to replace the entire device; instead, discover the component that is making the muffler noisy and replace or fix it.

For example, if the noise is caused by rust that has damaged a section of the muffler, you should repair that section rather than replacing the muffler.

Replace the muffler

If the muffler is beyond repair, the best course of action is to replace it entirely. Although this may cost you more money, it will save you money in the long run because you will not have to visit your mechanic as regularly for repairs.

Is it okay to drive with a noisy muffler?

Muffler Making Loud Noise-2

No, it is not acceptable to drive around with a noisy muffler for the reasons listed below.

It is illegal

Driving with a loud muffler is prohibited and might find you in hot water. A broken muffler usually makes an extremely loud noise that is unacceptable.

As a result, you are more likely to be stopped by traffic cops and given a penalty for generating noise pollution. You should replace your noisy muffler as soon as possible to avoid this.

Toxic fumes could leak into your car ventilation system

Another reason not to drive with a noisy muffler is that hazardous gases may escape into your vehicle’s ventilation system, posing health risks to you and other passengers.

The majority of noisy mufflers are frequently broken and may leak harmful exhaust fumes into your vehicle’s ventilation system. Furthermore, carbon monoxide from the exhaust may ascend and enter your vehicle.

It reduces your car’s fuel economy

A noisy muffler may impair your car’s fuel economy, causing you to spend more money on gas. When your muffler is noisy, it means that a portion of it has broken.


A faulty part on the muffler may prohibit your car from releasing exhaust fumes, which will reduce engine performance. As a result, your car will emit more pollutants and consume more petrol.

What happens if your muffler is clogged?

If your muffler becomes clogged, it can create excessive back pressure, causing exhaust gases to be forced back into the engine and choking it.

This can lead to excessive engine temperatures and, eventually, power loss. If you suspect that your muffler is broken, you should have it repaired as soon as possible to prevent engine damage.

What do muffler problems sound like?

If you continue to hear rattling noises under your car, it is a strong indication that you have muffler difficulties. A rattling noise indicates that your muffler has a loose component, such as a loose heat shield or exhaust bracket.

If you continue to hear the rattling noise under your car, you should take it to a reputable mechanic for a check before things worsen.

How do I know if a loud exhaust needs replacing?

The indicators listed below indicate that your loud exhaust needs to be replaced.

Decrease fuel efficiency

If your car’s fuel efficiency drops dramatically, it’s a strong indication that the loud muffler is impacting engine performance and must be replaced.

Very loud noise

If you hear particularly loud roaring noises coming from the muffler, it signifies the muffler has a large hole or is damaged beyond repair. A muffler that is beyond repair usually makes a loud roaring noise that contributes to noise pollution.

Other symptoms that your loud exhaust muffler needs to be replaced include poor fume emissions and persistent engine difficulties.

Final thoughts

If your muffler is noisy, it is an indication that something is wrong. You should have it inspected and repaired by a reputable mechanic.

If you do not repair your noisy muffler on time, you may generate noise pollution, which may result in legal consequences. It may also affect engine performance and fuel efficiency.

Furthermore, hazardous exhaust fumes from a defective muffler could enter your vehicle, putting your health and the health of other passengers at danger.