[h=2]Raikkonen sets pace as Mercedes stumbles[/h] Chris Medland / Images by LAT, F1

Kimi Raikkonen posted the fastest time on the final day of the first pre-season test as Mercedes finally showed cracks in its reliability.

On a day when plenty of running took place on an artificially soaked track to test Pirelli's wet tires, the Ferrari-powered cars completed the most mileage and Raikkonen set the pace for the second time this week. The track conditions ensured there was no improvement on the quickest time so far this week, with parts of the pit straight still damp late in the afternoon when the Finn posted a 1:20.872 on soft tires.