What is the most efficient engine type in an Audi A3?

I am interested in purchasing an Audi A3, but I am uncertain about which engine type is the most efficient. I want to make sure I am getting the best fuel economy while still having enough power to drive comfortably. Can anyone provide some insight on this?

The most efficient engine type in an Audi A3 is the 2.0-liter TFSI turbocharged inline-four. This engine offers excellent fuel economy with an EPA-estimated 27 mpg city and 36 mpg highway. For optimal power and efficiency, I would recommend the Quattro all-wheel drive version.

Personally, I have found that the 1.4-liter TFSI turbocharged inline-four offers a good balance of power and efficiency in the Audi A3. It may not have the highest fuel economy ratings, but it still offers a respectable 27 mpg city and 35 mpg highway.

I have been researching engines in the Audi A3 and have found that the 2.0-liter TDI diesel engine is the most efficient option. It delivers an impressive EPA-estimated 30 mpg city and 41 mpg highway. However, keep in mind that diesel engines often come at a higher cost.