Red Bull owner Dietrich Mateschitz has hit out at Renault for destroying his team's "enjoyment and motivation" and is ready to walk away from Formula One.
Relations between engine supplier and the four time world champions from Milton Keynes have been fraught since rule changes introduced new power units into the sport.
Christian Horner has also hit out at the lack of competitiveness in the Renault power unit.
Speaking to Speedweek ahead of Sunday's race at Red Bull Ring in the team's home country of Austria, Mateschitz said:
Beside taking our time and money they have destroyed our enjoyment and motivation No driver and no chassis in this world can compensate for this horsepower deficit. How many more things have to happen before we lose all enjoyment?...
"...There are contracts for Formula One participation. How many teams have dropped out of Formula One, despite already (having) contracts? You cannot hold someone if he wants to get out."
The boss of Milton Keynes-based Red Bull Racing says Daniel Ricciardo's first F1 win is testament to the teams youth development programme.
In his 57th grand prix, Ricciardo took full advantage of a bad day at the office for Mercedes to claim his maiden triumph by taking the chequered flag in Canada on Sunday at Montreal's Circuit Gilles Villeneuve.
Christian Horner said: "It is a very special day in his life and career, and I am sure it will probably take a while for it to sink in.
"It is also a fantastic testament to the junior programme that we are discovering young driver talent on merit, like Sebastian and Daniel.
Red Bull team boss Christian Horner reckons four time World Champion Sebastian Vettel is getting his 'mojo back' after his drive in Spain.
But from 15th on the grid, the Milton Keynes-based driver produced a superb drive to finish fourth behind team-mate Daniel Ricciardo.
"It was a great performance from him on Sunday. He really went for it," said team principal Christian Horner.
"He made the strategy work for him, he knew he had to make the passes and I thought it was a fantastic recovery drive."
Horner also paid tribute to Daniel Ricciardo:
"Dan has done a great job this year and he is so calm in the car.
"I can't speak highly enough of what Dan has done in the first five races and managing this pairing is a walk in the park compared to previous years."
Formula One champions Red Bull Racing based at Milton Keynes will be honoured with Freedom of the Borough in a ceremony tonight.Read the full story ›
Reigning Formula One world champions Red Bull will recieve yet another honour later tonight.
The team, which is based in Milton Keynes, will receive the Freedom of the town at a special ceremony tonight.
The prestigious award marks the tremendous success of the four time world champions.
Winning the Formula One title four times in a row puts the Red Bull driver Sebastian Vettel in the sporting megastar category.
But behind every great driver there is a great team and today at the Red Bull factory in Milton Keynes, Sebastian Vettel dropped by to say thanks.
Click below to watch Olivia Paterson's report.
Formula One World Champion Sebastian Vettel and team principal Christian Horner have spoken of their pride after another title-winning season.
During the interview Vettel revealed he had "enormous respect" for his Red Bull team-mate Mark Webber, but admitted they "didn't have the best relationship on a personal level".
Click below to watch the full interview at Red Bull Racing's Milton Keynes HQ.
F1 World Champion Sebastian Vettel talks to David Coulthard at Red Bull Racing's HQ in Milton Keynes.
The media await the arrival of Formula One World Champion Sebastian Vettel at Red Bull Racing's headquarters in Milton Keynes.
The small Norwich beer-maker Redwell says it is hopeful of reaching agreement with the multi-national drinks company Red Bull in a dispute over its name.
Red Bull wrote to Redwell Brewing demanding a change in name because it was too similar and might confuse consumers.
The Norfolk brewery, which is named after a street in Norwich, has now confirmed that it is in talks with Red Bull and is hopeful of keeping its name.
Red Bull said in a statement: "Red Bull has long been willing to allow Redwell to maintain its mark for beer so long as they do not use it for energy drinks."