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

I am trying to decide between the Audi A3 45 and 40 models, but I am having trouble understanding the difference between the engines. Can someone explain it to me in simple terms?

The main difference between the Audi A3 45 and 40 engines is the power and torque output. The A3 45 has a 2.0-liter turbocharged engine that produces 228 horsepower and 258 lb-ft of torque, while the A3 40 has a 1.4-liter turbocharged engine that produces 147 horsepower and 184 lb-ft of torque.

Additionally, the A3 45 has a 7-speed dual clutch transmission, while the A3 40 has a 6-speed manual or 7-speed S tronic transmission. This affects the acceleration and overall driving experience.

If you want a more powerful and sporty driving experience, the A3 45 is the better choice. However, if fuel efficiency is a priority, the A3 40 may be a better option.