Mercedes chief Toto Wolff has sent an ominous warning to their F1 rivals claiming that the 'puzzle is complete' as to why their W13 car has been trailing behind this season.
Seven-time world champion Lewis Hamilton has been left frustrated and without a race victory with four rounds remaining of this year's championship - which Red Bull have dominated.
Exactly what has been wrong with the Mercedes this year has not been revealed with some pointing at them introducing the revolutionary 'zero sidepods' design. They also had to raise the car due to bouncing problems in Azerbaijan, which caused Hamilton spinal pain.
