Double World Champion Fernando Alonso is sure that Mclaren can win next year - only if they can find 2.5 seconds over the winter.
Mclaren/Honda have endured a disastrous season for their standards and with their all-star lineup, neither Button or Alonso have been able to challenge for race wins. For 2016, Alonso has admitted that the team needs to find 2.5 seconds worth of improvement for next year's car.
"If we improve two and a half seconds we will win."
"Winning is another step, it is beating Mercedes but even now very big teams can't do it.
"So for us it will be a huge task but we are ready to try."
Formula One teams are allowed to bring as many aero updates they wish for each race weekend. However, development of the engine is restricted via a token system. The Spaniard told Autosport that Honda's plans for next year engine are far more advanced compared to Mercedes, Ferrari and Renault.
"We are working on that and we understand that but it is a very big gap that we have to close.
"The steps that we can do are much bigger than any other team.
"They don't promise anything, but they are very optimistic about the results of next year's engine.
"The steps that are in this [new] spec engine, the information they have from this year, mean they have learned many things that they didn't expect."
Written by Harry Shovelar
Bahrain International Circuit - Winter testing