Christian Horner has stated that Red Bull do not have to stick with their Renault engines despite having a contract running with the French company until 2016.
Red Bull's defence of their Driver and Constructor titles has disappointed with a relative lack of power from their Renault units compared to the Mercedes engines in their rivals cars. Horner had his worries as early as 2012.
"We sat down to express our concerns with Renault in autumn 2012," he told reporters. "Renault have got to get it together. They're not in Formula One to make up the numbers.
"They've been tremendously successful in their time in Formula One and they've stated they're in it to compete and win and not just make up the numbers. Anything other than success is on their agenda. I believe that they will be addressing that in the near future."
Despite being tied to Renault for another two seasons after this, Horner claims they will do what they need to do to be at the front of the pack
"The great thing about a team like Red Bull is that we've always got options," he said according to GPUpdate.net.
"I'm obviously not going to disclose what those are here. But we want to run at the front and we want to be competitive and in order to be competitive we have to have a sensible power unit."
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