Fernando Alonso said he has no intention of leaving McLaren or Formula 1 before his contract ends in 2017.
His future has been the subject of speculation after McLaren boss Ron Dennis said last November that they had discussed the idea of a sabbatical.
After his first test in the new McLaren, Alonso said he would “of course” see the season out, adding: “And the next one.
“I have a contract for three years. I’m not thinking about anything else.”
He added: “This is a very important year for us.”
The 34-year-old two-time champion, who is still regarded by many as the best driver in F1, indicated on Tuesday his wish for McLaren – and Honda – to turn their performance around after a difficult 2015 in which they finished ninth out of 10 teams.
“The ambition is very high,” he said. “I am not here just to travel around the world and to jump in the car and have some fun on Sunday. I am here to win.”