Nico Rosberg is convinced his Mercedes team can "turn the corner" after a difficult series of races in the build-up to the summer break.
Rosberg, the winner of the Chinese Grand Prix earlier this year, has scored just two points in the last three races and has not finished higher than sixth since the Monaco Grand Prix.
The German had another difficult weekend in Hungary, where he managed just one point from 10th position.
The Mercedes driver is hopeful, however, that his team will take a step forward after the summer break.
"A difficult period for us, but I'm convinced that we can turn the corner," said Rosberg in his post-race video blog. "There's stuff coming, upgrades and things, so I think over the next coming weeks we'll be able to take a step forward.
"Although again, it's difficult to know because the tracks are quite unusual. It's so difficult to predict, but I'm optimistic that we can do a lot better."
Rosberg admitted the Hungarian Grand Prix had been tougher than expected, as he thought Mercedes would be more competitive.
"It didn't really go to plan," he added. "I expected us to be quite quick but we were just not quick enough. 13th in qualifying, it really was quite bad.
"At least I got one point. I thought I could maybe race Massa and try to beat him but then my pace dropped off so there was no chance."