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 a Formula One Grand Prix weekend.
Having only turned 17 on Tuesday, Verstappen completed 22 laps in a Toro Rosso, finishing twelfth fastest.
Verstappen 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.
The young Dutchman, who will hand the car back to Jean-Eric Vergne for qualifying and race, showed confidence and composure before engine trouble in the last 10 minutes of the session ended his day. He will be promoted from reserve to race driver in 2015.