Wolff reveals problem with Mercedes' W15: 'It has become more difficult'

Toto Wolff has pinpointed the issue, which has caused a small setback in results for Lewis Hamilton and George Russell at Mercedes. The German team went into the summer break as the form team, winning three of the previous four races. However, results have dipped slightly since the Dutch Grand Prix at Zandvoort. Wolff has noted where the W15 is lacking.