Mercedes have some worries Mercedes' reliability worries are not overin the aftermath of the weekend in Canada, where Lewis Hamilton failed to finish, while Nico Rosberg had to nurse his ailing W05 second place as the otherwise totally dominant German squad struck cooling problems with its energy recovery systems. During Friday and Saturday practice sessions at the Red Bull Ring, the problems appeared to be back. 'No, unfortunately not,' said team boss Toto Wolff, when asked by the Austrian broadcaster ORF on Saturday if the Canada problems were fully resolved. 'We still have aches and pains that we have not resolved but we need to for the race.' 'It's much like the cooling issues in...
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