Renault Could Quit in 2017 - Horner

Red Bull team boss Christian Horner says, Renault could quit Formula 1 if the sport does not allow in-season engine development next year. Renault, which supplies engines to Red Bull and Toro Rosso, admits it cannot catch Mercedes and Ferrari this year. Horner said a failure to open it up would be "almost waving goodbye to" Renault. Renault has a contract with Red Bull and Toro Rosso until the end of 2016. Renault Sport boss Cyril Abiteboul said: "There will not be a future for Renault in F1 if we do not have a competitive engine."