Lewis Hamilton insists he is not worried Mercedes’ performance slump could slide into 2013.

Despite the Brackley based team’s Shanghai breakthrough and Michael Schumacher’s Monaco pole, Nico Rosberg’s best result more recently was a fifth in Singapore, while the W03 is still a regular non-finisher.






















Sebastien Buemi has allowed himself only a modest dig at Toro Rosso’s new drivers, after Jean-Eric Vergne and Daniel Ricciardo slumped to 16th and 17th places in qualifying for the Chinese grand prix. 









