
Red Bull Team Principal Christian Horner has confirmed that the reigning Formula 1 world champions are staying with Renault engines in 2015.
In recent days, the team’s more outspoken director, Helmut Marko, has suggested the forthcoming Austrian Grand Prix is the deadline for Renault to prove that they have overcome their early-season crisis. The blunt Austrian has even mentioned Volkswagen as a potential alternative.
“There are no ultimatums for Renault,” Horner insisted ahead of the Canadian Grand Prix, “other than that we want to improve as quickly as we can.”
Although the reigning quadruple world championship-winning team, with ‘genius’ Adrian Newey designing its industry-leading cars, Red Bull’s engine alternatives are scant.

Mercedes and Ferrari, also suppliers of Formula 1 engines, are Red Bull’s fiercest on-track rivals, while incoming Honda’s works team next year will be McLaren.
So for now, Red Bull is sticking with Renault, “They know the situation. [Renault president] Carlos Ghosn reassured us on his visit to Monte Carlo. We must not forget that we have also had a lot of success with Renault, and we trust them to solve their problems.”
As for reports that Red Bull might axe the Renault contract on the grounds of poor performance, Horner answered: “We will have Renault engines in our cars next year – 100 per cent.” (GMM)