How do I add Bluetooth to my Audi A4?

I recently purchased a used Audi A4 and realized that it does not have Bluetooth capabilities. Is there a way to add Bluetooth to my car without having to upgrade to a higher trim level or purchasing a new stereo system?

Fortunately, there are a few options available for adding Bluetooth to your Audi A4. One option is to purchase a Bluetooth adapter that plugs into your car's audio system. Another option is to replace your car's stereo system with one that has built-in Bluetooth capabilities.