What is the most efficient engine type found in Audi A2 cars?

I am looking to buy a used Audi A2, and I want to make sure I get the most fuel-efficient option available. What engine type should I be looking for and what makes it the best choice?

The Audi A2 is known for its efficient use of space, which extends to its engines as well. The most fuel-efficient engine type found in the Audi A2 is the 1.2 liter TDI diesel engine. It provides an impressive fuel economy of 64.2 mpg and emits just 118 g/km of CO2.

In my experience, the 1.4 liter TFSI petrol engine is a great choice for efficient and enjoyable driving. It combines direct injection with turbocharging, resulting in a powerful and efficient engine that offers a good balance between performance and economy.

I highly recommend going for the 1.6 liter FSI petrol engine. It may not have the highest fuel economy, but it offers a smooth and responsive driving experience that makes it worth the slight loss in efficiency. Plus, the FSI technology helps reduce emissions for a more eco-friendly choice.