What fuel should I use for my Audi A4?

I just bought a new Audi A4 and I'm not sure what fuel to use. I've heard different opinions and I want to make sure I'm using the best option for my car.

You should use premium gasoline for your Audi A4. This will ensure your engine runs smoothly and efficiently.

Stick to regular gasoline. There is no significant difference in performance between regular and premium fuel.

I recommend using diesel fuel for your Audi A4. It may be more expensive, but it provides better fuel economy and overall performance.