Why does my Audi A6 produce a burning smell after driving for a while?

After about an hour of driving, my Audi A6 starts to smell like something is burning. It's not a strong smell, but noticeable. What could be the cause of this and is it something I should be concerned about?

The most likely cause of a burning smell in your Audi A6 is a failing catalytic converter. This component is responsible for reducing the emissions from your engine and can sometimes fail or become clogged, resulting in a burning smell. It's not an immediate cause for concern, but it's important to have it checked out by a mechanic as soon as possible.