What is the main difference between the Audi A5 and the Audi S5?

I am interested in purchasing an Audi A5 but I am unsure of the difference between the A5 and the S5. Can you clarify for me?

The main difference between the Audi A5 and S5 is the engine. The A5 has a 2.0-liter turbocharged four-cylinder engine, while the S5 has a 3.0-liter turbocharged V6 engine.

Another key difference is the performance. The S5 has a more powerful engine and a sport-tuned suspension, making it faster and more agile on the road compared to the A5.

In terms of exterior design, the S5 has more aggressive styling with larger air intakes and a lower stance. It also has quad exhaust outlets, while the A5 only has two.