hay and tiene

Hola Danielle H.

Good question!

• Hay means there is / there are.

  For example:

  Hay un carro en la calle = There is a car in the street.

• Tiene (from tener) means he/she/it has.

  For example:

  Él tiene un carro = He has a car.

• Tienes means you have.

  For example:

  ¿Tienes un carro? = Do you have a car?

So your example ¿Tienes un carro? makes sense — it means Do you have a car?

Hope that clears it up!

Best

Silvia