Gas station

How do you say in United States :" cargar combustible en una estación de servicio" ? I know that is self-service but i dont know what is the correct question.

We would say "fill up with gas at a gas station" or just "fill up at a gas station" or sometimes "gas up at a gas station".

To make it a question you could ask:

Do you need to fill up?

Can I fill up?

Are you going to gas up at the next station?

Hope that helps! Házmelo saber si tienes cualquier preguntas.