What is the difference between Audi A5 45 TFSI and Audi A5 40 TDI?

I am trying to decide between these two engine options for the Audi A5. Can anyone explain the technical differences and which may be better suited for long distance driving?

The A5 45 TFSI has a 2.0-liter turbocharged four-cylinder gasoline engine, while the A5 40 TDI has a 2.0-liter four-cylinder diesel engine. Both offer good performance, but the diesel may be more fuel-efficient for longer journeys.

The main difference is in the type of fuel used and the corresponding engine technology. TFSI engines are known for their smooth and powerful performance, while TDI engines are more efficient and suitable for high mileage driving.

In terms of performance, the TFSI has a higher horsepower and torque output compared to the TDI. However, the TDI offers better fuel economy and lower carbon emissions. It ultimately depends on your driving needs and preferences.