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

I've been looking at the Audi A3 and noticed there are two engine options - the 40 TFSI and 45 TFSI. What are the main differences between these two engines and how does it affect the performance and fuel efficiency?

The main difference between the Audi A3 40 TFSI and 45 TFSI engines is their power output. The 40 TFSI has a 2.0L inline-four turbocharged engine with 184 horsepower, while the 45 TFSI has a 2.0L inline-four turbocharged engine with 228 horsepower. This means that the 45 TFSI will have better acceleration and overall performance compared to the 40 TFSI.