McLaren and Honda have confirmed that their partnership will come to an end at the conclusion of this year’s Formula 1 campaign.
The operations reunited prior to the 2015 season in a bid to rekindle the alliance that claimed multiple titles in the late 1980s and early 1990s.
However, the relationship has been fraught with trouble, amid a lack of reliability and performance, restricting McLaren to a best race finish of fifth and highest championship classification of sixth.
McLaren has spent several months seeking to extricate itself from its partnership with Honda and on Friday it was confirmed that the organisations will go their separate ways for 2018.
McLaren is poised to link up with Renault to receive the power units originally assigned for Toro Rosso, which in turn will take up McLaren’s abandoned supply of Honda engine.
"There has never been any doubt over Honda’s commitment and energy to the mission of success in Formula 1," said McLaren chief Zak Brown.
"They are proven winners and innovators. For a combination of reasons our partnership has not flourished as any of us would have wished.
"It is certainly not for the want of effort on the part of either Honda or McLaren, but the time has come to move ahead in different directions.
"As fellow racers, we hope to see the great name of Honda get back to the top – our sport is better for their involvement. I know this view is shared by everyone in the sport."