What is the technical difference between Audi A8's V6 and V8 engines?

I am considering purchasing an Audi A8, but I am not sure which engine option to choose. Can you explain the technical differences between the V6 and V8 engines and how they affect the performance and fuel efficiency of the vehicle?

The V6 and V8 engine options for the Audi A8 differ primarily in their size and number of cylinders. The V6 has six cylinders while the V8 has eight, allowing the V8 to produce more power and torque. However, this also means that the V8 may be less fuel efficient than the V6. Consider your driving needs and priorities before selecting an engine option.