What are the differences between the Audi A4, A6, and A8 models?

I am trying to choose between the Audi A4, A6, and A8 models but I'm not sure what sets them apart. Can anyone provide a detailed breakdown of the differences?

The Audi A4 is a compact executive car that is known for its impressive handling and fuel efficiency. The A6 is a mid-size luxury sedan that offers a comfortable and quiet ride, with the option for a more powerful engine. The A8 is a full-size luxury sedan that boasts a spacious and luxurious interior, as well as advanced technology and safety features. All three models are known for their high-quality and reliable performance.

As an avid Audi fan, I can tell you that the main differences between the A4, A6, and A8 models come down to size and features. The A4 is the smallest and most affordable option, while the A6 and A8 offer larger and more high-end options. It really depends on your personal preferences and budget.