How Much Does It Cost to Install Auxiliary Port in a Car? (Updated Prices)

Are you tired of driving in silence and wish you could listen to your favorite tunes on your car’s sound system? Adding an auxiliary port to your car can solve this problem, but how much does it cost? 

We will explore the different factors that affect the cost of installing an auxiliary port in your car and give you a ballpark estimate of what you can expect to pay. Get ready to enjoy your music on the go.

How Much Does It Cost to Install Auxiliary Port in a Car?

Adding an auxiliary or USB port to your car can be done through aftermarket or factory kits. Aftermarket solutions can cost around $80 in 2024, while factory kits can set you back around $200. However, premium kits can be as expensive as $800, not including installation costs. 

Some providers may offer free installation services, making them a good option to consider. The cost of installation will depend on the head unit in your car, with older models generally having higher installation costs due to the lack of existing ports. 

In these cases, adding an auxiliary or USB port will be necessary to connect to your car’s stereo system.

AUX Aftermarket Radio

What is an Auxiliary Port?

An auxiliary port (AUX) is an additional audio input method commonly found in cars, radios, and headphones. You may also hear it referred to as an auxiliary jack or input. An AUX cord serves as the connection between your peripheral sound source and the electrical circuit created by the AUX port. 

Once plugged in, the AUX cord provides the electricity needed to transmit the sound from your phone, MP3 player, or other music device to the AUX port. While the science and physics behind AUX systems can be complicated, they all rely on electricity and a magnet to produce sound through your car’s speakers. 

Whether you’re driving or just listening to music at home, the AUX port is a convenient and widely-used method for enjoying your favorite tunes.

What Are the Advantages of Installing an Auxiliary Port?

Installing an auxiliary port (AUX) in your car or stereo system has several advantages that make it a popular choice among music lovers. Here are some of the main advantages of installing an auxiliary port:

AUX USB input adapter

Increased Compatibility

One of the main advantages of installing an AUX port is that it makes your car or stereo system compatible with a wide range of devices. Whether you have an old iPod, a new smartphone, or a laptop, you can easily connect it to your car or stereo system using an AUX cable. 

This means that you don’t have to worry about compatibility issues or outdated technology, as AUX ports are standard across most devices.

Better Sound Quality

Another advantage of installing an AUX port is that it offers better sound quality compared to other input methods like FM radio or Bluetooth. This is because the sound signal is transmitted through a wired connection, which reduces the loss of quality that can occur with wireless connections. 

Additionally, AUX ports often have higher bandwidths and less interference, resulting in a cleaner and clearer sound.

AUX USB and Jack

Improved Convenience

An AUX port is also a convenient input method for music lovers who want to enjoy their favorite tunes while driving or doing other activities. Unlike other input methods, you don’t have to worry about pairing or syncing your device, as all you need to do is plug in the AUX cable and start playing your music. 

Additionally, AUX cables are usually long enough to reach your device wherever it may be, making it easy to control your music without having to constantly reach for your device.


Compared to other input methods like installing a new stereo system or upgrading your car’s sound system, installing an AUX port is a cost-effective solution. AUX ports are relatively inexpensive, with aftermarket solutions costing around $80 in 2024 and factory kits costing around $200. 

This makes it an affordable way to upgrade your car or stereo system without breaking the bank.


An AUX port is a versatile input method that can be used for more than just playing music. It can also be used for audio recording or connecting other audio devices, making it a useful addition to any audio system.

What Are the Disadvantages of Installing an Auxiliary Port?

While installing an auxiliary port in your car or stereo system has many benefits, there are also some disadvantages to using it for audio. When you connect your smartphone or MP3 player to an AUX port, your device is responsible for processing and producing the music. This puts a strain on the device and can lead to a decrease in battery life. 

AUX Buying parts online

Additionally, AUX cords are prone to breaking down with frequent use, and worn-down cords can produce static or background noise. This feedback and transmission nature of the AUX system means that it cannot produce the same high-quality sound as a Bluetooth or built-in CD system. 

While these drawbacks are worth considering, many people still find that the convenience and affordability of AUX ports make them a worthwhile investment for their audio needs.

What Are the Different Aux Port Installation Options?

When considering installing an auxiliary port in your car or stereo system, there are three main options to choose from. The first is to add the aux port directly to your existing radio. This involves opening up the radio and installing the port internally, which can be a bit more complex and may require some technical expertise. 

The second option is to purchase an accessory adaptor that functions as an AUX port. This is an easier and more affordable solution, as the adaptor simply plugs into your car’s existing audio system. Finally, you can choose to install a brand new radio with an AUX port built-in. This option provides the most convenience and highest quality sound, but also tends to be the most expensive.

Can You Install an Auxiliary Port Yourself?

While it is possible to install an auxiliary port upgrade without professional help, it largely depends on the type of upgrade you choose. For instance, an FM modulator is an affordable and easy-to-install option that plugs directly into the cigarette lighter port of your car. This type of upgrade does not require the expertise of a professional. 

AUX Pre installment

However, if you opt for a higher quality upgrade, such as installing a new radio with an AUX port built-in, it is likely that you will need the assistance of a professional. This is because the installation process can be complex and may require specialized tools and knowledge.

Why Should an Auxiliary Port Installation Be Done by a Professional?

While it may be tempting to try and modify your car’s AUX port on your own, it’s important to keep in mind that this type of work can be very complex and potentially dangerous. One of the main reasons why you should consider hiring a professional to handle the job is because AUX port modifications involve working with a car’s electrical components. 

Unless you have extensive knowledge of a car’s electrical circuitry, attempting to make changes to your vehicle’s stereo system can be dangerous for both you and your car. A misplaced wire can cause electrical shocks, damage to the car’s components, and even start a fire inside the car’s interior. 

Additionally, trying to install a new radio on your own can also be risky, as you run the risk of damaging the car’s dashboard and aesthetic. A poorly fitted stereo can ruin the car’s appearance and cause extra wear and tear on the vehicle’s dashboard. 

A professional installer will ensure that the new stereo is precisely fitted and seamlessly integrated into the car’s design, leaving it looking like it has always been a part of the vehicle.

AUX USB and Aux unit


Adding an auxiliary port to your car can enhance your driving experience by providing you with the ability to listen to your favorite tunes. While the cost of installation can vary depending on several factors, it’s important to consider the benefits of having a professional handle the job to ensure safety and quality. 

With proper installation, you can enjoy high-quality audio in your car for years to come.


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