Eli5: 2 cars have the same Horsepower but different engine in terms of displacement (2.0L TDI vs 3.0L TDI) but what difference does it make and which one is better?

Question

Eli5: 2 cars have the same Horsepower but different engine in terms of displacement (2.0L TDI vs 3.0L TDI) but what difference does it make and which one is better?

In: 87

Answer 1

Your question is to vague. What are your parameters for which one is better?

You wanna talk about fuel mileage, or torque, or weight, physical size, cost to repair, part availability, warranty, etc etc.

If you wanna forget about all that or say they are both the same on all points for comparison sake, then I would at the 2.0.
For a smaller engine to make the same HP as a larger one, the smaller is more efficient, which is better.

Add in any other factory and the conversation is a different one.