Lotus have confirmed they are going to change the gearbox on Grosjean's car ahead of  next weekend's German Grand Prix.

Lotus became aware of a transmission issue on the final lap of the British GP last weekend

"It was a gearbox problem and we are very fortunate that Romain didn't have the problem earlier in the race, confirmed Lotus technical director James Allison. "Unfortunately for Romain it means he'll take a five-place grid penalty at Hockenheim, but he certainly showed at Silverstone that dropping down the order won't stop him challenging at the sharp end."