What is Audi's Cylinder On Demand technology?

I've heard that some Audi models come with a Cylinder On Demand feature. Can someone explain how this works and how it improves fuel efficiency?

Audi's Cylinder On Demand technology is a system that can deactivate a portion of the engine's cylinders when they are not needed. This means that a vehicle with this technology only uses the number of cylinders necessary for the power and performance required at that moment. This can significantly improve fuel efficiency without compromising on power. As an owner of an Audi A7 with this technology, I've noticed a significant improvement in my gas mileage.

The Cylinder On Demand feature in Audi vehicles works by electronically deactivating a set of cylinders in the engine when they are not needed. This means that the engine is not working as hard, therefore reducing fuel consumption. Having owned an Audi A7 for over a year now, I can definitely vouch for the effectiveness of this technology in improving fuel efficiency.