Jenson Button may bring down curtain on his F1 career at end of disastrous McLaren Honda season
Jenson Button could be set to end his Formula One career at the end of the season with an announcement on his future expected as early as this week's Japanese Grand Prix.
The 2009 world champion is in the midst of his worst-ever season in the sport with McLaren's Honda partnership having descended into a farce.
Button has finished in the points in just two of the 13 races this season and retired from Sunday's Singapore Grand Prix with a gearbox problem.
"Only my head knows, but my mouth and tongue don't," said Button, a 15-time winner, when asked if the time was right to end his stay in F1.
"The race was mentally very tough. You get out of the car and you are angry but you learn in this business to get over things pretty quickly, otherwise they pull you down.
"The joy of being in the car is only there if you're fighting at the front, because you feel like you're achieving something. If you're fighting near the back, you're driving an F1 car, but you can easily get joy driving something else.
"The joy you get is competing. It's about fighting at the front. It's about the possibility of standing on top of the podium. That's the joy of Formula One."
Button and his beleaguered McLaren team - who endured their fourth double retirement of the season in Singapore after Fernando Alonso also suffered a gearbox failure - will now head to Honda's home race in Japan where a decision on their line-up for 2016 could be revealed.
McLaren have an option on Button for next season, but that clause expires at the end of September.
He has been entered for 281 races in his career - a record for a British driver. He made his F1 debut in 2000.