Mercedes says it is 'optimistic' Nico Rosberg's gearbox has been repaired and won't need to be replaced for the Hungarian Grand Prix following its issues at Silverstone.

Rosberg lost seventh gear in the closing stages of the British Grand Prix but was able to nurse the car home to retain his second place on the road, only for a 10secs time penalty to drop him to third as punishment for Mercedes' illegal radio communications.

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Ahead of the Hungarian Grand Prix, Mercedes has confirmed it will test the gearbox in FP1 and is confident there will be no lasting damage.

"We will be running the race gearbox tomorrow to make sure it is OK and are optimistic that it will be," confirmed a Mercedes spokesperson.

Rosberg comes into the Budapest event with a mere one point lead over Mercedes team-mate Lewis Hamilton in the overall standings.

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