Mercedes' Lewis Hamilton believes he may struggle to hang on to his lead in the 2018 world championship.
Hamilton won his first race of the season in Baku, to put him 4 points ahead of Sebastien Vettel, but Hamilton believes holding the lead will be difficult.
"Leading the championship is great, but if we continue as we are, it will take a lot of lucky races to keep me here," Hamilton said
"You can't expect that for the next 17 races,
"The car has the pace but we are not unlocking it. We need performance and I need a rhythm and they're not in perfect harmony."
The Britain added that Ferrari are the team to beat, saying:
"Their pure pace is much better than ours at the moment.
"By no means do we have a bad car, but we need to improve it to make it easier to drive.
"I felt really good in Australia but it hasn't worked out since then and I'm not sure why."
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