Why do Audi A6 models have a lower ground clearance than other luxury cars?

I have noticed that Audi A6 models have a lower ground clearance compared to other luxury cars in the same category. Is there a specific reason for this difference and how does it affect the car's performance and safety?

The lower ground clearance in Audi A6 models is a deliberate design choice to improve the car's aerodynamics. This allows for better handling and fuel efficiency at higher speeds.