Why is the Audi A5 Carbon Build-up a Cause for Concern?

I've heard about carbon build-up in cars, but I've recently learned that it's an issue specific to Audi A5s. Can someone explain more about why it's a problem and what can be done to prevent it?

Carbon build-up is a common issue in direct-injection engines like the one in the Audi A5. Essentially, it occurs when fuel and air do not mix properly, leaving behind a residue that can clog up your engine and negatively impact performance. To prevent this, make sure to use high-quality fuel and regularly schedule maintenance with a trusted mechanic or dealership.