Jaime Alguersuari said he was happy with the result in his Formula 1 debut after finishing the Hungarian Grand Prix in 15th position.
The 19-year-old made Formula 1 history on Sunday when he became the youngest driver to compete in a grand prix. The Spaniard continued with his promising start and finished ahead of Toro Rosso teammate Sebastien Buemi.
Alguersuari conceded he struggled physically over the last laps, but was delighted with the result.
"I am very happy to have finished, but the last five laps were very difficult from the physical point of view," said Alguersuari. "I found it hard to keep the car on the pace, but I am very satisfied. P15 is not so bad, but the main objective was to complete the 70 laps, with no mistakes, maintaining my pace. I have learned a lot but I have to say there are some aspects of F1 which made me think, 'S***, this is tough.'"
Buemi, meanwhile, was unhappy with his performance after some costly errors relegated him down the order.
"I am very disappointed with this race, as I made a lot of mistakes and I am not at all happy with my performance," he said. "I don't think starting on the harder tyres was the right decision. I lost several places at the start and got stuck in traffic. Just a bad race.
"The car was good, as we showed in qualifying but today I was the one who made the mistakes. The only positive thing is that the car is definitely improved with this new package."