How can I fix the sound quality on my Audi A4?

I recently purchased a used Audi A4 and noticed that the sound quality is not as good as I expected. How can I improve the sound quality?

First, make sure your car's audio settings are adjusted correctly. This includes adjusting the bass, treble, and balance levels to your liking.

You can also consider upgrading your car's audio system if you're looking for a significant improvement in sound quality. Do some research and read reviews to find the best option for your budget.

Another simple solution could be to check for any loose connections or damaged speakers. This could be the cause of poor sound quality. It's worth considering getting them replaced if needed.