Why does the Audi A4's engine have a timing chain instead of a timing belt?

I've noticed that my Audi A4, unlike some other cars in its class, has a timing chain instead of a timing belt. What are the advantages of this design?

The Audi A4's engine uses a timing chain instead of a timing belt because it is more durable and reliable. Unlike a timing belt, which needs to be replaced at regular intervals, a timing chain can last the lifetime of the engine with proper maintenance. Additionally, a timing chain is less likely to fail and cause engine damage if it does break.

Using a timing chain instead of a timing belt allows the engine to be designed for higher horsepower and torque outputs. This is because a timing chain can handle a greater load and rotation speed than a timing belt. It also reduces engine noise and vibration.