Red Bull Racing is on the verge of terminating its partnership with Renault, with a split becoming effective as soon as 2016.
According to Autosport, the Milton Keynes outfit has sent the French manufacturer a document requesting termination of the pair's collaboration, which Renault will likely accept.
The strained and contentious relationship between Red Bull and Renault has developed on the back of a disastrous 2015 campaign, with the French power unit suffering from appalling reliability and a sub-par performance level which have led to Red Bull enduring its worst season in its existence.
Red Bull's Christian Horner said over the Italian Grand Prix weekend that the team was awaiting a response from Renault over its future F1 plans.
“Time is starting to press on now,” he said. “We are now into September and everyone needs to know what are Renault’s plans for the future. within the next two weeks. We should all know what Renault’s position is.”
It remains to be seen whether Red Bull's unilateral decision, should it be confirmed, would lead to a financial penalty for the British team, or whether the split would be contractually labeled as 'mutually agreed'.
As for Renault, an announcement regarding its Formula 1 future is expected any day now, with a buy-out of Lotus expected as the most likely outcome.
Hamilton cruises to dominant Monza victory
2016 F1 driver line-ups so far
F1 drivers' girlfriends gallery
Keep up to date with all the F1 news via Facebook and Twitter