Hungary - Ferrari's car became 2 kilograms heavier ahead of the Hungarian grand prix weekend (July 22-24, 2016).
Germany's Auto Motor und Sport reports that a turbocharger failure at the Silverstone test earlier in July resulted in the housing being penetrated.
Safety demands
Reportedly, the FIA demanded that - on safety grounds - Ferrari must beef up the housing for Hungary, resulting in 2kg of extra weight and located in a position that compromises the centre of gravity.
The Hungarian GP has thus far been another difficult weekend for the Maranello team, amid the Italian press' characterisation of a 'crisis' of performance, reliability and management.
Sebastian Vettel was just fifth in qualifying, with McLaren-Honda's Fernando Alonso claiming that if it wasn't for his spin, "I could have been ahead of him".
READ: Hungarian GP - Rosberg snatches pole position in crash-filled qualifying
Kimi Raikkonen, meanwhile, is a miserable 14th on the grid, but team boss Maurizio Arrivabene played down Saturday's results.
Arrivabene is quoted by Finland's Iltalehti: "We made a mistake with Kimi.
"As for Seb, he was again faster than the two Red Bulls, but unfortunately the yellow flag disrupted the end of his lap."