What is the difference between the Audi A2 TDI and TFSI engines?

I am looking to purchase a used Audi A2, but I am unsure of which engine type to choose. Can someone explain the main differences between the TDI and TFSI engines and how it will affect the car's performance and fuel efficiency?

The biggest difference between the TDI and TFSI engines is the fuel type they use. TDI engines use diesel fuel, while TFSI engines use gasoline. In terms of performance, TFSI engines tend to have more horsepower and torque, but TDI engines have better fuel efficiency. If you are looking for power and speed, go for the TFSI, but if you prioritize fuel economy, opt for the TDI.

Another difference between the TDI and TFSI engines is the combustion process. TDI engines use a compression ignition, while TFSI engines use a spark ignition. This leads to a slight difference in performance and engine sound. TDI engines are known for their smooth and quiet operation, while TFSI engines have a sportier sound.

If you are looking for a long-term investment, the TDI engine may be a better choice. Diesel fuel is typically more stable and has a longer shelf life compared to gasoline, which can degrade over time. TDI engines also have a longer maintenance schedule, reducing costs in the long run.