What fuel type does the Audi A7 require?

I've heard that the Audi A7 has a special fuel requirement. Can you explain what type of fuel it takes and why?

The Audi A7 requires premium unleaded gasoline with an octane rating of 91 or higher. This type of fuel allows the engine to run at peak performance and helps maintain the car's efficiency.

I've been a proud A7 owner for years and can confirm that it does indeed require premium gasoline for optimal performance. However, using regular fuel will not cause any damage to the car, but it may affect its performance.