Why do Audi A4s have dual exhausts?

I've noticed that many Audi A4 models have dual exhausts. Is this for performance reasons or just for aesthetics?

The dual exhausts on Audi A4s serve both purposes: they enhance the performance of the vehicle by increasing the flow of exhaust gases, and also add to the car's sporty and sleek design.

From a technical standpoint, dual exhausts provide better engine breathing and help reduce backpressure, ultimately leading to improved power and torque. Plus, they just look great!