Why is Ferrari's engine legality always being questioned?

Why is Ferrari's engine legality always being questioned?

Why is Ferrari's Formula 1 engine being scrutinised? How did Racing Point find out about Renault's brake bias system? Is Sebastian Vettel any good at car development? Our ex-F1 technical director answers these questions and more

What's your take on the teams questioning the Ferrari's engine legality? Why is the Ferrari power unit questioned so often while Mercedes' dominance goes without legal challenge?

Sasha Selipanov, via Facebook

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