Pace setter Kimi Raikkonen insists lap times at this stage in the pre-season 'don't mean much', but was pleased to report a good feeling with the Ferrari as he completed the first F1 test of 2015 with the fastest lap.

On a week that has seen Ferrari top three of the four days - and Felipe Nasr in the Ferrari-powered Sauber go quickest on the other -, Raikkonen would eventually come away with the quickest lap overall in the new SF15-T.

Joining new team-mate Sebastian Vettel as the only drivers to go beneath the 1min 21secs mark, Raikkonen played down the importance of the times, but was positive about the general reliability and the characteristics of the car.

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"It doesn't mean much," he said when asked about topping the timesheets. "The lap time can be anything but we've got a good amount of laps and things are working, we're not really having many issues. That's the main thing plus the feeling is pretty fine, so that's good.

Reiterating his point that the car already feels like a step forward over its unloved F14-T predecessor, Raikkonen is happy with the gains made over the test.

"I think the whole package is better all-round; the engine and the car itself, everything has improved. Obviously we still have a lot of hard work to try and improve things but it's a good starting point. Compared to last year I found it much better but we still have a lot of things to work on and improve."