Red Bull boss Christian Horner says outgoing engine supplier Renault will not be in a position to win until 2018 at the earliest.
- F1 sale could happen this year - Ecclestone
- Maldonado sponsors paid Lotus 'in advance' for 2016
- Mercedes wary of Singapore repeat in Sochi
- F1 without wind tunnels 'many years' away - Lowe
- McLaren's aero gains should not be overlooked - Button
- 'I'm not backing down' - Rosberg
- Pirelli hopeful of more exciting Russian GP this year