Kimi Raikkonen was left to lament a difficult day after technical issues restricted his running in the Ferrari F14T.
Raikkonen completed just an installation lap during the first practice session but returned to the circuit in the second session and set the seventh fastest time.
"It was a difficult day, that began with a technical problem in the morning session, which meant I only did an installation lap," he said.
"Once that was sorted out, in the afternoon, we tried to make up for lost time, concentrating mainly on getting the set-up suited to this track, sacrificing some of our race simulation. It’s difficult to give an overall assessment and I definitely missed out a bit because of the lack of track time."
Team-mate Fernando Alonso was second fastest on practice day and reckons Ferrari has made progress with their upgrades.
"We have brought some small updates here, which we already tried at the Bahrain test," he said.
"Everything worked well and that’s good news. Leaving aside the performance of the others, I am happy with what we have done today. At every race, all the teams bring something new and we must try and make an additional step forward if we want to be competitive. This track is particularly tough on tyres, with the Softs especially suffering from graining over a long run."