What is the maximum power output of the Audi A6's engine?

I am looking to buy an Audi A6 and want to know how powerful the engine is. Can someone share this information and explain how it affects the car's performance?

The Audi A6 comes with a range of engines, from the base 2.0L turbocharged inline-4 to the 3.0L turbocharged V6. The top-of-the-line RS 6 Avant model's engine can produce up to 591 horsepower, providing exceptional acceleration and speed.