Red Bull Racing boss Christian Horner believes Mark Webber will do much better in this weekend's Grand Prix in Malaysia.

Horner said they had investigated a few problems with the car after Webber complained he couldn't match teammate Vettel's speed at the opener, and he fully expected Webber to be at the front of the pack this time.

He said he was expecting their rivals Ferrari and Mclaren to come back at them strongly and warned that nothing was a given yet.