What are the differences between the Audi A6 45 TFSI and the A6 55 TFSI?

I am considering purchasing an Audi A6 and have seen that there are two engine options available: the 45 TFSI and the 55 TFSI. What are the main differences between these two options and which one would you recommend?

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

Another difference to consider is fuel efficiency. The 45 TFSI has a higher fuel economy, with an EPA estimated 24 MPG in the city and 32 MPG on the highway, compared to the 55 TFSI's 22 MPG city and 29 MPG highway rating. If you do a lot of city driving, the 45 TFSI could save you some money on gas in the long run.