Why is it important to choose the correct oil for my Audi A4?

I've noticed that there are different types and grades of oil available for my Audi A4. However, I'm not sure why it matters which one I choose. Can you explain the importance of choosing the correct oil for my car?

Using the correct oil for your Audi A4 is crucial for its performance and longevity. The type and grade of oil can affect the engine's lubrication, protection against wear and tear, and overall fuel efficiency.

I cannot stress enough how important it is to choose the right oil for your Audi A4. Not only can using the wrong oil potentially cause engine damage, but it can also result in decreased performance and void the manufacturer's warranty.