Claire Williams says she expects Pat Symonds to have an immediate impact on the team when he takes up his new role with the Grove-based outfit.

Williams has endured a challenging season to date and only scored its first point of the year in the Hungarian Grand Prix, where Pastor Maldonado finished tenth.

In an attempt to turn its fortunes around, Williams confirmed a change to its technical team last month, with Mike Coughlan leaving his position of technical director and Pat Symonds being brought in from Marussia.

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Symonds is due to start his role ahead of the Belgian Grand Prix at Spa next weekend and Williams said she expected his arrival to have a positive impact.

"Clearly we are not where we would like to be, but we have exciting things ahead because of the changes we have made," she told TotalRace. "Pat Symonds is coming in after the August break and I think he will have an immediate impact and help to get us where we need to be.

"Our current situation is clearly not what we want, and we had to make some changes."

Williams added that the team wasn't yet prepared to write off the 2013 season to focus on next year and remained hopeful of adding more points to its tally.

"We can't do that," she replied when quizzed on switching focus to next year. "Williams always goes to a race trying to score points and wanting to win. We have to keep developing the current car while we also think about 2014."

Williams chief engineer Xevi Pujolar meanwhile insisted that the team was keen to continue its development push when racing resumes, with a series of upgrades planned for the upcoming races to try and add to the single point scored so far.

"We are still pushing, still developing this car," he told ESPN. "We had some new parts [in Hungary] and then in Spa and Monza it's different packages, but for Singapore we will still be pushing and trying to bring more parts to the car because we want to improve and we want to get closer to the top ten."