What are the main differences between the Audi A4 and A6 models in terms of engine power and performance?

I am trying to decide between purchasing an A4 or A6, but I am not sure if the difference in engine power and performance is significant enough to justify the higher cost of the A6. I primarily use my car for daily commuting and occasional long-distance road trips.

The Audi A4 and A6 have similar engine options, with some variations in the higher-end models. While the A6 offers a slightly more powerful engine, the difference in performance may not be noticeable in everyday driving. If budget is a concern, the A4 may be a better choice for your needs.