 In August 2018, Vázquez was called up by Argentina for their September friendlies.On 7 September 2018, Vázquez made his debut with Argentina in a 3–0 win over Guatemala, as he came on as a 56th minute substitute.Vázquez is a quick, talented, and mobile left-footed player, who, despite not being particularly fast, possesses a decent burst of acceleration and good physical strength, as well as excellent dribbling skills, close control, and a solid first touch, which enables him to turn past challenges, beat opposing players, and run towards goal during counter-attacks, or retain the ball in tight spaces and hold up the ball for teammates with his back to goal; he also has a penchant for using the nutmeg, which is often a trademark move he utilises in order to get past his opponents.