What is the difference between Audi A4 and A6 and which one is better for city driving?

I am considering buying an Audi for my daily commute in the city, but I am unsure of which model would suit my needs better. Can you explain the key differences between the Audi A4 and A6 and provide a recommendation for city driving?

The Audi A4 is a smaller and more affordable luxury sedan compared to the A6. It is great for navigating narrow city streets and parallel parking. However, the A6 has a more powerful engine and offers a smoother ride on the highway. If you plan on mainly driving in the city, the A4 should suffice.