Why does the Audi A8 have variable fuel displacement technology?

I've noticed that the Audi A8 has a feature called variable fuel displacement technology. How does this technology work, and what are its advantages?

Variable fuel displacement technology, also known as cylinder deactivation, works by deactivating certain cylinders of the engine when cruising or driving at low speeds. This helps reduce fuel consumption and emissions, while still maintaining power and performance when needed. It's a great feature for those who are looking for a more fuel-efficient luxury car.

As its name suggests, variable fuel displacement technology allows for varying levels of fuel displacement based on driving conditions. This means that the engine can run on fewer cylinders when less power is needed, which in turn reduces fuel consumption. It's a smart technology that helps the Audi A8 achieve a balance between performance and efficiency.

If you're wondering why some models of the Audi A8 mention 'TFSI' while others mention 'TDI', variable fuel displacement technology is the reason why. TFSI stands for 'Turbo Fuel Stratified Injection', while TDI stands for 'Turbocharged Direct Injection'. Both technologies are made even more efficient with the addition of variable fuel displacement, providing a smoother and more responsive driving experience.