Current tensions between Red Bull and Renault have prompted speculation that the Milton Keynes outfit may be thinking about designing its own engine.
It isn't the first time such a prospect has been considered, as the possibility was briefly mentioned last summer, although at the time Christian Horner all but ruled it out, stressing that working with a strong partner was preferable.
But as both parties mutually lashed out at each other in the aftermath of a disastrous Australian Grand Prix weekend, the probability may have been once again put on the table by Red Bull management.
It is also rumored that Red Bull will have a dyno up and running at its factory by next September suitable for testing the engine and gearbox entity, while a new cylinder head designed by engine guru Mario Illien is also on the verge of being tested. Illien's engineering company has been working as a consultant for Renault to help the manufacturer improve its performance.
Difficult times often lead to crucial decisions, and there's no doubt the coming months will indeed have a strong bearing on the F1 future of both Red Bull and Renault.
Click here for the full gallery from the Australian Grand Prix
Keep up to date with all the F1 news via Facebook and Twitter
Charles Leclerc believes Formula 1's new-era machinery has forced him to rethink one of the…
Formula 1's teams and drivers regroup this weekend surrounded by the majesty of the Ardennes…
Max Verstappen has once again refused to reveal his hand on his Formula 1 future,…
Aston Martin is facing a race against time at Spa-Francorchamps, with the team's ambitious push…
Red Bull has opted for caution over innovation ahead of this weekend’s Belgian Grand Prix…
Max Verstappen has made a significant move away from the Formula 1 cockpit by welcoming…