Mercedes Formula 1 champion Lewis Hamilton has insisted that he is not "stressed" about the threat of Ferrari following Sebastian Vettel's victory in Malaysia.

The German beat Hamilton in a straight fight two weeks ago, but the 30-year-old Brit does not share Mercedes boss Toto Wolff's concerns that Ferrari's win rung alarm bells.

"We are not too stressed or anything," ESPN quotes Hamilton as saying. "We had not the most amazing weekend [in Malaysia] and I think we will be stronger this weekend.

"I personally don't [think it rang alarm bells], but [Wolff's] the team boss and that's his perspective on it. For me, I think you can't get every weekend right. It wasn't that much of a disaster weekend for us apart from the fact we missed a [Friday practice] session, but that can happen any time."

This weekend, Hamilton will try to claim his second win of the season in the Chinese Grand Prix.