What is the difference between the Audi A6 45 TFSI and A6 55 TFSI?

I am looking to purchase an Audi A6, but I am not sure which engine option to choose. Can you explain the difference between the A6 45 TFSI and the A6 55 TFSI?

The main difference between the Audi A6 45 TFSI and A6 55 TFSI is the engine power and performance. The A6 45 TFSI has a 2.0-liter four-cylinder engine with 248 horsepower, while the A6 55 TFSI has a 3.0-liter V6 engine with 335 horsepower. If you want a more powerful and responsive driving experience, the A6 55 TFSI would be a better choice.

Another key difference between the A6 45 TFSI and A6 55 TFSI is their fuel economy. The A6 45 TFSI has an EPA estimated 24 mpg combined, while the A6 55 TFSI has an EPA estimated 22 mpg combined. If you prioritize fuel efficiency, the A6 45 TFSI would be a better option.