A dynamic, tenacious, energetic, diminutive, and versatile left-footed player, who is regarded as a highly promising prospect in modern football, Bennacer is capable of playing in several midfield roles, and has been used as a deep-lying playmaker in a holding role in midfield, as an attacking midfielder, or as an central offensive-minded midfielder, known as the mezzala role in Italian football. His main characteristics are his speed, vision, intelligence, composure, dribbling skills, passing, and technique; he is also known for his ability to transition from defence into attack.