Why does my Audi A3's engine sound loud?

I recently noticed that my Audi A3's engine seems to be making more noise than usual. It's not a constant loud sound, but it seems to come and go. What could be causing this issue and is it something I should be concerned about?

It is possible that your Audi A3's engine is making more noise due to a lack of maintenance. Make sure to regularly change your oil and check your engine's components for any wear or damage.

Another potential cause could be a loose or damaged exhaust pipe. Have a mechanic inspect your car's exhaust system to ensure everything is secure and functioning properly.

If you notice the loud sound when accelerating, it could be a sign of a faulty muffler. Have a professional check your muffler and replace it if necessary.