After confirmation of Ferrucci's entry into the 2016 GP3 Series, he became a test and reserve driver for the Haas F1 Team alongside Ferrari Driver Academy member and GP3 champion, Charles Leclerc. Ferrucci got his first taste of F1 machinery when he tested for Haas at Silverstone after the British Grand Prix. Haas retained Ferrucci as development driver for 2017 and 2018.