How To Make A Car Exhaust Quieter: 5 Easy Tricks To Try

Written by Michael Harris
Last updated

Let’s be honest, having a loud noisy exhaust is no fun unless you are driving those Supercars that were designed to have massive exhaust power from the engine.

Are you also suffering from a loud exhaust? Don’t worry in this article I will show you exactly how to quiet a car exhaust without losing performance.

Most new vehicles are now designed specifically to have a soundproofed exhaust, however, as the gets older or something happens the exhaust may start to exude a lot of noise and this may be more than just a loud engine so it is important you check your car if you experience any unusual noise.

If you are experiencing a loud exhaust that is very unusual, it is very likely your exhaust pipe might be leaking somewhere, and if the exhaust is leaking whether from the engine, middle of the car or at the muffler, it can release carbon dioxide CO2 which is not good for your health.

How to Soundproof an Exhaust

If you’re are looking for a solution on how to quiet a car exhaust without losing performance or power there are many ways you can go about solving that, I will show you the most effective ways that are proven to work and you can do them yourself.

Sound Deadening a Leaking Car Exhaust

If you have identified any leaks in the exhaust you have to now see how big is the hole, smaller holes are easier and cheaper to repair, Larger holes are still easy to repair but slightly more expensive and if the exhaust is rusted you must replace the whole system.

Soundproofing Small Exhaust Holes

You will need epoxy or patches. I recommend Permatex Repair Epoxy from Amazon. This is enough to cover small exhaust holes and it’s very affordable.

Permatex 84333 High Temp Epoxy Stick - 2 oz.
136 Reviews
Permatex 84333 High Temp Epoxy Stick - 2 oz.
  • Industrial strength, titanium-reinforced epoxy
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To Use this follow these steps.

  1. Cut a slightly larger patch of the epoxy than the hole to make it overlap.
  2. Mix Up the epoxy and insert it into the exhaust leaking area(hole) and the edges.
  3. Use your hands to make sure the patch is stuck on the exhaust
  4. leave it for about 4 hours
  5. Test your car if the exhaust is still loud, you will need the special exhaust kit.

Method for Large Exhaust Leaks

For larger leaks, this may be slightly tedious but really effective and can be done easily and inexpensively if you pick the right material.

You will need a patching exhaust kit and the best one is special exhaust patch kits from AmazonA very affordable way to quiet an exhaust without losing performance and power and you can do it under a few dollars. But it is important to note that, the hole must be less than 3 inches for this to be effective.

In order to patch your car exhaust do the following:

  1. Clean the exhaust to get rid of any debris, dust or rust
  2. Cut the patch a little bit more than the hole to make it overlap
  3. Stick the patch and wait for a while before testing out.

This is really simple and should work if you have any hole in the exhaust causing it to make noise.

Using Car Exhaust Silencer Method

This is one of the most effective ways to reduce vehicle exhaust noise. I highly recommend this if your car is making a lot of noise on the muffler. One thing exhaust silencer does is, It makes it easier to soundproof an exhaust without going through a tedious process and wasting money on things that don’t simply work.

You can check out the Universal Exhaust Silencer Muffler. To use this is very simple all you have to do is insert it in the exhaust pipe and you are ready to go, plus it’s universal which means it works in any car.

IKON MOTORSPORTS Universal Exhaust Mufflers & Silencer, 2.5'...
60 Reviews
IKON MOTORSPORTS Universal Exhaust Mufflers & Silencer, 2.5"...
  • Universal fit most cars with straight exit mufflers with 2.5 inch piping.and it's...
  • Style: N1 Style muffler & silencer | Color: Polished Chrome stainless steel,The burnt...
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Rusted Exhaust

If the whole exhaust system is rusted, you might want to completely replace it, it’s much more cost-effective and the better way to go about silencing the exhaust noise without the car losing power.

Signs of a Leaking Exhaust

More than likely most exhaust noises are caused by a leaky exhaust system. Normally the noise from either the front or the rear of the exhaust pipe. In other for you to check for leakage in the exhaust, follow the following steps:

  1. Park the car on a flat level surface.
  2. Make sure the brake is applied (avoid the car moving).
  3. Lay down next to the next to the car and check underneath if there are any leaks.
  4. For safety purposes, I recommend you ask someone to be inside the car to make sure the brake is applied as you crawl to check the leakage underneath the car.

Exhaust Leakage at the Engine

If you can hear and see the leakage at the engine, This may be a damaged Gasket or loose pipes that need tightening.

Leakage Near the Center of a Car

This is one of the most common leakages that happens at the center of a car, It is relatively cheap to repair, it’s only a hole that needs to be welded.

Leakage at the Vehicle Rear

If the exhaust is leaking at the back of the vehicle, this can be caused by a loose muffler or a rusty exhaust, either way can be fixed without your vehicle losing power and performance.

Sounds from the Tailpipe

If the noise is coming from the tailpipe, it can mean that your car exhaust is fine the problem might be with the engine it’self.


Do Exhaust Tips Change the Sound?

Changing the exhaust tips does result in the change of the sound in the exhaust but that depends entirely on the quality and the material used to make the exhaust tips, also the size of the exhaust tips play a huge role on how the exhaust will sound, for example, if you change a 5-inch tip diameter to a 1.5-inch then the sound will be different due to the exhaust is now less deeper.

Do Resonators Make Exhaust Quieter?

No, resonators don’t make your vehicle exhaust quieter, in fact, it has the opposite effect, they make the exhaust sound much louder and really aggressive.

What Changes the Sound of an Exhaust?

There are many factors that may play a role in how loud your exhaust sounds but two of the most crucial things that are responsible for exhaust sounds include:

  1. Your vehicle engine
  2. Exhaust systems included in your car


I really hope this post helped you solve the loud exhaust problem and thought you how to quiet a car exhaust fast and easy without spending tons of money on a thing that you can simply fix yourself. please also check out how soundproof a car hood liner to help silence and engine.

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About The Author

Hey I'm Michael and I run this website. I'm a professional voiceover artist and in my search to create a silent studio I've become obsessed with soundproofing and things being quiet. Thanks for visiting and if you have any question get in touch.