One of Ferrari's main problems is that its all-new 2014 engine is overweight.
That is the claim of the German magazine Auto Motor und Sport, who said customers Sauber and Marussia are also struggling with a 'power unit' that weights 13 kilograms too much.
Correspondent Michael Schmidt said the overweight Ferrari caught even the Maranello based team by surprise, having successfully argued against a further increase in the minimum car-plus-driver weight of 691 kilos for 2014.
Fernando Alonso finished just fifth in Melbourne.
"I have 12 points more than Vettel and Hamilton, which is a positive," the Spaniard said, "but I was missing 35 seconds to Rosberg.
"That must give us...
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