Red Bull Racing boss Christian Horner admits his team could be powered by a different engine company in 2016.
Red Bull’s relationship with Renault, which brought them eight titles between 2010 and 2013, has his the rocks in the last 18 months, coinciding with the team’s plummet down the order.
Red Bull have been heavily linked with a move to Mercedes power next season, but find themselves tied into a deal with Renault for next season.
Renault meanwhile are linked with a move to buy the Lotus team, who are struggling to stay afloat as the season goes on.
But with rumours abound in both camps, Horner has demanded answers from the engine manufacturer with regards to their future.
“We have an agreement until 2016 and it’s important to understand what Renault’s plans are,” said Horner. “Then we can react accordingly.
“We want to see what Renault’s commitment is in the long term regarding F1. We can’t afford to have another season like this season.”