Fernández spent his first two seasons in single-seaters in the Italian, German, Spanish and Emirati Formula 4 championships.

2018 would see Fernández competing in the final season of the FIA Formula 3 European Championship for the Motopark team.

He would do even worse than in the season before and score no points, with a 12th place in Barcelona being his best result.

The ART Grand Prix team signed Fernández to partner Frenchman Théo Pourchaire and Russian Aleksandr Smolyar for the 2020 season.

Fernández took pole position, his first in FIA Formula 3, at the opening round at the Red Bull Ring.