Valtteri Bottas believes Williams has made a step forward with an updated car during practice for the Hungarian Grand Prix.

While Williams has been very strong in recent races, the FW34 is expected to be less competitive in Hungary due to the high-downforce requirements of the circuit. However, Bottas said the new parts brought to the Hungaroring had all worked and he hopes the team will be able to remain competitive throughout the weekend.

"We made steps forward so that's really nice to see," Bottas said. "We went through all the updates and were trying all the bits. I'm really that happy that everything we put on the car - that was planned - made the car better. So that was good to see, but obviously I think it's going to be really tight this weekend."

With neither Williams managing to finish higher than seventh in the two sessions, Bottas said the team was aware it was likely to be less competitive in Hungary.

"I think it was really expected that could be the case. It's pretty difficult to predict where we will be tomorrow because from Friday practice to qualifying a lot of things can change. I know we can still improve everything for tomorrow. I can probably get a better lap in and we as a team can get the set-up better, so it's going to be close.

"All the bits that we put on the car which were new made the car better, so that was really good to see. I think there is still a lot of room - certainly in lap time - to go down tomorrow. From Friday to Saturday we can make some good steps."

And Bottas said Williams is still aiming to beat both Red Bull and Ferrari despite the circuit not suiting the car as much as previous tracks.

"We know here it's going to be more difficult. It's going to be really close I think this weekend but that should be the target. We know it's not going to be as easy as some other circuits but we need to be aiming for it."