A demonstrative adjective accompanies a noun. In the
phrase (este carro), the demonstrative adjective (este)
explains which car you are talking about (this car).

Examples:

Me gusta este perro. - I like this dog.
Prefiero estas computadoras. - I prefer these computers.
Voy a comprar ese coche. - I'm going to buy that car.
Me gustan aquellas casas. - I like those houses.
Me gustan aquellos gatos. - I like those male cats over there.

Note: Pay attention to gender an number.

Prefiero este suéter - I prefer this sweater.(masculine, singular)
Prefiero estos suéteres - I prefer these sweaters.(masculine, plural)

Prefiero esta blusa - I prefer this blouse.(feminine, singular)
Prefiero estas blusas - I prefer these blouses.(feminine, plural)

The following tables will help you decide which
demonstrative adjective you will need to use.