Kimi Raikkonen accepts that Ferrari needs to work on its reliability after a mixed start to the 2016 season.
Ferrari has again emerged as Mercedes' nearest challenger, with Sebastian Vettel leading the Australian Grand Prix before finishing third, while Raikkonen placed second in Bahrain.
However, Raikkonen was unable to finish in Australia while Vettel retired on the formation lap in Bahrain.
Raikkonen is sure that the inherent speed of the SF16-H is encouraging but that work is required on its reliability.
"It's positive what the team has built over the winter," Raikkonen said ahead of the Chinese Grand Prix.
"It hasn’t been [an] ideal first two races, we have two podiums but two non-scores, non-finishes, and that’s not what we want, obviously there is work to be done on that side.
"But the speed is there, not in qualifying exactly if you take the last race, I think we have a good package we just have to improve it but it’s improved in all the areas [compared to 2015].
"[It's] not just one [place], the engine has improved, the team work has brought us a better package, not as good as we want it to be, but it’s definitely a good car and we go from there."