What is the brake fade phenomenon in Audi A1?

I've noticed that after a long drive, the brakes on my Audi A1 seem to become less effective. What is this phenomenon and how can it be addressed?

Brake fade is a common issue in high-performance vehicles like the Audi A1, caused by excessive heat build-up in the brake pads and discs. To address this, consider upgrading to high-performance brake pads with better heat dissipation capabilities and always allow your brakes to cool down between hard stops.