What are the main differences between Audi A6 and Audi A8?

I am considering purchasing either a new Audi A6 or A8, but I'm not sure what sets them apart. Can someone help me understand the key differences between these two models?

The Audi A6 is a mid-size luxury sedan while the Audi A8 is a full-size luxury sedan. This means the A8 has more interior space and a generally larger and more luxurious feel. If you prioritize space and comfort, go for the A8. If you prefer a more compact and sporty feel, go for the A6.