Formula One title contender Kimi Raikkonen accused McLaren's Sergio Perez of driving like an idiot after a Monaco Grand Prix collision that almost ended the Finn's 23-race run of scoring finishes.
Ferrari are closer to Mercedes than results have suggested in this season's two races and look like posing a real challenge, according to Formula One world championship leader Nico Rosberg.
Lotus apologised on Monday for bad language in a heated exchange with their driver Kimi Raikkonen during Sunday's Indian Formula One Grand Prix.
Ferrari were already feeling the frustration and Sunday's Chinese Grand Prix added a measure of embarrassment to the mix for Formula One's most successful and glamorous team.
Formula One's first pre-season test ended in Jerez with Ferrari's Kimi Raikkonen fastest.
Finnish team mate Kimi Raikkonen, who started on pole for the first time in nine years but lost the lead in the pitstops, made sure of a Ferrari one-two with Hamilton finishing seventh for Mercedes after starting 13th.
Nico Rosberg won a dramatic Australian Grand Prix on Sunday after a bungled tyre strategy dashed Sebastian Vettel's chances of a season-opening triumph and Fernando Alonso survived a spectacular crash that left his McLaren wrecked.
Formula One world champion Sebastian Vettel limbered up for a Japanese Grand Prix that could bring him a fourth successive title on Sunday with the fastest time in Friday practice.