Why does the Audi A3 use a turbocharged engine?

I've noticed that many newer Audi A3 models come with a turbocharged engine. Can you explain the purpose and benefits of using a turbocharged engine in the Audi A3?

The turbocharged engine on the Audi A3 allows for increased power and efficiency. By compressing more air into the cylinders, the engine can burn more fuel and produce more power without sacrificing fuel efficiency.

Using a smaller engine with a turbocharger allows the Audi A3 to have a lighter overall weight, resulting in better handling and agility on the road.