What is the difference between Audi A3 40 TFSI and 45 TFSI?

I am considering purchasing an Audi A3 and I am confused about the different TFSI options. Can someone explain the difference between the 40 TFSI and 45 TFSI engines?

The main difference between the Audi A3 40 TFSI and 45 TFSI is the engine size and power. The 40 TFSI has a 2.0 liter engine with 184 horsepower, while the 45 TFSI has a 2.0 liter engine with 228 horsepower. This means that the 45 TFSI will have better acceleration and performance.