Why do some Audi A5 models have a different grille design?

I've noticed that some Audi A5 models have a honeycomb grille while others have a vertical bar and slat design. What is the reason for this difference and which design is better for airflow and performance?

According to Audi engineers, the honeycomb grille design is used on higher performance models to maximize airflow to the engine and improve cooling. However, the vertical bar and slat design is more aerodynamic and may be preferred for fuel efficiency on standard models.

Both grille designs serve different purposes and are tailored to the specific needs of each Audi A5 model. The honeycomb grille is designed to enhance engine performance while the vertical bar and slat design allows for better fuel efficiency. It ultimately depends on your priorities as a driver.