Sergio Perez has confirmed that he will leave McLaren at the end of 2013, just 12 months after signing for the team.
Perez, 23, joined McLaren from Sauber in place of Lewis Hamilton and is currently 12th in the championship with 35 points.
It is expected that McLaren will replace Perez with Formula Renault 3.5 Series champion Kevin Magnussen.
"I would like to thank McLaren for giving me the opportunity to be with them this season," Perez said in a statement posted on his website.
"It has been an honour for me to have been in one of the most competitive teams in the sport and I do not even a bit regret joining them."
"I have always given them my best and still despite this I could not achieve what I aimed for in this historic team."
"I am committed to delivering very good results in these last two race, especially in Austin."
"I am so much looking forward to see all my people gathered together, feel their energy and show them the best of me. I would like to say to every single of of my fans around the world and in my country that I am eternally grateful to them. They have never let me down, especially in difficult moments like these. I truly appreciate their support, the have never forgotten me."
"I have met a lot of new people at McLaren this season and I have made many good friends as well. From the top management level to the marketing, accounting and engineering departments to the mechanics, the cooks, the catering people and basically everyone in the team, I am eternally grateful. It has been a learning experience to me."
Perez thanked McLaren and said that he is now focusing on securing a seat on the grid next season.
"I would like to wish the team the very best in the future."
"In the meantime I will be looking at my future to ensure my position in the best possible package to fight for wins."
"Thanks to McLaren and all their partners for this season, you can rest assured that I will never give up."