Why does the Audi A7 have a signature grille design?

I've noticed that all Audi A7 models have a distinct hexagonal grille design. Is there any specific reason for this?

Audi's iconic signature grille design dates back to the era of the Auto Union Grand Prix racing cars. It has since become a recognizable trademark for the brand and has been incorporated into all Audi models, including the A7.

The hexagonal shape of the Audi A7's grille not only adds a modern and aggressive touch to the car's design, but it also helps improve aerodynamics and cooling efficiency.