Red Bull team principal Christian Horner praised Honda for the work they had done on their engine over the winter, but he still expects a strong fight from Mercedes.
“I think it’s going to be very, very tight,” Horner said. “The whole team has worked tremendously hard over the winter to get ourselves into this position, Honda have done a stellar job as well.
“Everyone was writing Mercedes off over the last couple of weeks and they’re right there, and they’re going to be right there in the race.
“It’s going to be a massive challenge for us to beat them but hopefully we’re starting from the best possible place.”