Honda will return to Formula One in 2015 as McLaren engine partners, replacing Mercedes, sources close to the company said on Wednesday.
However, McLaren's David Coulthard warned Button not to be under any illusions.
"The reality check is a race weekend so there is nowhere to hide from that," said the Scot.
New McLaren driver Sergio Perez set the fastest lap on the second day of Formula One testing at Barcelona's Circuit de Catalunya on Wednesday.
Can Mercedes' seven-time world champion Lewis Hamilton add to his record tally of 103 victories?
Formula One driver Jenson Button had reportedly signed a deal with McLaren for one more year, months ago, and the announcement is set to be made soon.
McLaren boss Ron Dennis said on Tuesday he had decided to stay at the helm of the Formula One team, ending media speculation that he was about to stand down.
Following's Verstappen's 2021 title win, here's a list of F1 champions over the years...
Ferrari and McLaren take battle off the track with their new super cars.
World champion Jenson Button calmly steered his way through the chaos of a wet Chinese Grand Prix for his second win of the season on Sunday, leading Lewis Hamilton to a McLaren one-two.
Formula One championship leader Lewis Hamilton says he would have even driven for free for the team this year.
Force India Formula One team boss Vijay Mallya feels beating McLaren for fifth spot in the team standings will be a 'big task' in the remaining four races of the season.
Formula One served up a thriller in China at the weekend but the lack of fans indicated the sport must do more to sell itself to new audiences, according to McLaren boss Martin Whitmarsh.
Formula One drivers expressed shock after the sport's governing body quadrupled the amount stewards can fine them to a maximum of one million euros ($1.06 million).
A teary George Russell celebrated the first Formula One Grand Prix victory of his career in Brazil on Sunday in a one-two finish with Mercedes team mate and seven-times world champion Lewis Hamilton.
Force India's Paul di Resta's race ended prematurely due to a collision while Adrian Sutil finished ninth in the Belgian Grand Prix as Sahara Force India lost its fifth place to McLaren in Spa on Sunday.
Lewis Hamilton has signed a new contract with Mercedes and will continue to partner compatriot George Russell in 2024 and 2025, the team said on Thursday.
Max Verstappen became the first Formula One driver to take 16 victories in a season
McLaren ace Jenson Button has claimed he won't win a single race this season with his current car after finishing ninth in the inaugural Australian Grand Prix on Sunday.
Hamilton won Formula Three and GP2 (now Formula Two) championships with Vasseur's ART team in 2005 and 2006 before making a spectacular Formula One debut with McLaren in 2007.
On the sidelines of a promotional event in Mumbai, Hamilton talks to Rediff.com's Bikash Mohapatra about F1, his immediate goal and his future.
Lewis Hamilton said Real Madrid player Vinicius Jr as 'incredibly brave' for his response to racist insults in Spain.
Max Verstappen added his name to the list of triple Formula One World champions on Saturday after Red Bull team mate and sole title rival Sergio Perez crashed out of the Qatar Grand Prix sprint race.
Diksha Dagar fought back strongly in the second round to make the cut alongside compatriot Pranavi Urs at the Ladies Open.
Formula One and the championship-leading Red Bull team mourned the death of the energy drink company's Austrian founder Dietrich Mateschitz on Saturday at the age of 78.
Haas had argued that Alonso's car was in an unsafe condition after a collision because the right-hand mirror, which eventually fell off, was moving around. They also made the point they had been shown a black and orange flag, requiring a driver to pit due to mechanical problems or loose bodywork, on three occasions this season.
Max Verstappen clinched his second win of the season as the Australian Grand Prix was halted with three red flags.
Verstappen struggled for grip through qualifying but it all came together in his last effort
Max Verstappen leads Red Bull front row sweep in Bahrain
Red Bull's double World champion Max Verstappen won the Mexico City Grand Prix on Sunday to set a Formula One record of 14 victories from a single season, as well as the most points scored.
Red Bull's Max Verstappen qualified comfortably faster but dropped five places for a gearbox change.
Brad Pitt's as-yet untitled Formula One movie starts filming at Silverstone against the race backdrop at this weekend's British Grand Prix.
Max Verstappen won Red Bull's home Austrian Grand Prix from pole position and with the fastest lap on Sunday for the team's 10th successive Formula One victory and ninth in nine races this season.
It was Hamilton's first pole position since Saudi Arabia in December 2021.
DS Penske's Jean-Eric Vergne won Formula E's first race in India
The pole was Leclerc's seventh of the season and 16th of his career.
Max Verstappen won the Spanish Grand Prix from pole position to stretch his Formula One championship lead to 53 points.