Fernando Alonso says Ferrari is still on a learning curve ahead of this weekend's Malaysian Grand Prix.
Alonso was fifth fastest in the second practice session at Sepang but was reluctant to make predictions for this weekend's race.
"We are on a learning curve, which is not unusual for the start of a championship and, to find out how competitive we are, as usual we will have to wait until Saturday and Sunday," he said.
"Usually, Friday is a very confusing day, because everyone is working on their own programmes, but this year it’s even more the case because of all the new elements.
"Everything went well, with no reliability problems and we managed to do a fair number of laps, enough to get a good understanding of the tyres, which will be a very important factor here because of the high temperatures.
"The Hard compound seems to stand up better over a long run, but it’s still too early to talk about qualifying and race strategy. For now, the only thing one can be sure of is the need to do everything to perfection."