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

I am considering purchasing an Audi A3, and I am curious about the variations in engine options. Can someone explain the differences between the 40 TFSI and 45 TFSI?

The main difference between the 40 TFSI and 45 TFSI is the engine size and power output. The 40 TFSI has a smaller 1.4L turbocharged engine, while the 45 TFSI has a larger 2.0L turbocharged engine. This means that the 45 TFSI will have more power and acceleration. If you prioritize performance, go for the 45 TFSI!

The other key difference is the fuel economy. The 40 TFSI has a higher fuel efficiency, with an estimated 30 mpg combined compared to the 45 TFSI's 27 mpg. If you are looking to save on gas, the 40 TFSI may be the better choice.