What are the differences between the Audi A2 1.4 TDI and 1.4 FSI engines?

I'm looking to buy a used Audi A2, and I'm not sure which engine would be better for my needs. I've heard mixed opinions and would appreciate some clarification.

The Audi A2 1.4 TDI engine is a diesel engine, while the 1.4 FSI is a petrol (gasoline) engine. This means that the TDI engine will have better fuel efficiency and torque, but the FSI engine will have a smoother and quieter ride.

Both engines are good options, but it ultimately depends on your driving preferences. If you value fuel efficiency and torque, go for the TDI engine. If you prioritize a smooth and quiet ride, then the FSI engine would be a better choice.

I've owned both the 1.4 TDI and 1.4 FSI Audi A2s, and in my experience, the TDI engine has better longevity and requires less maintenance. Plus, diesel tends to be cheaper than petrol in some countries.