Why does the Audi A6 have a turbocharger?

I've noticed that many car manufacturers are starting to use turbochargers in their engines. But what is the specific reason for Audi to include one in their A6 model?

The main purpose of a turbocharger is to increase the power and efficiency of an engine. It works by forcing more air into the engine, resulting in more power and better fuel economy.

In Audi A6, the turbocharger is specifically used to improve the vehicle's overall performance. It allows for better acceleration and quicker response times.