Max Verstappen said he was satisfied with his performance at the Japanese Grand Prix on Friday where he became the youngest driver to take part in Formula One.
Having only turned 17 on Tuesday, Max completed 22 laps in a Toro Rosso during the first practice session, finishing twelfth fastest.
The teenager is close to two years younger than the previous record holder Jaime Alguersuari, who was 19 years and 125 days when he contested the 2009 Hungarian Grand Prix.
Max, who will hand the car back to Jean-Eric Vergne for qualifying and the main race, showed confidence and composure before engine trouble in the last 10 minutes of the session ended his day.
He will be promoted from a reserve driver to a main race driver in 2015.