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

I am considering buying an Audi A6 and I noticed there are different engine options, specifically the 45 and 55 TFSI engines. What is the difference between these two engines and which one is better for my driving needs?

The main difference between the Audi A6 45 and 55 TFSI engines is their power and torque output. The 45 TFSI engine produces 248 horsepower and 273 lb-ft of torque, while the 55 TFSI engine produces 335 horsepower and 369 lb-ft of torque. For a more powerful and responsive driving experience, the 55 TFSI engine would be the better option.