Massa puts Williams on top on final day at Jerez

F1 Test, Jerez, Circuit Permanente de Jerez

Just a single day after urging Williams to fix the small problems that delayed the team in the earlier days of the test, Felipe Massa managed to complete 86 laps in the new Williams, including setting the fastest lap of the day.

Today started wet at Jerez though, allowing the teams and Pirelli to analyse their new full wets a bit further, while also enabling more running on the intermediate tyres later on. Pirelli has earlier in the test announced to make today a wet weather test, but this time they did not need to water the track as on Wednesday.

As the day went well for Williams, it was probably even more valuable for Ferrari as Fernando Alonso racked up 115 laps, trying out a new diffuser and some cooling modifications on the Ferrari F14T. A quick fix modification on the sidepods appears to have done the job to get the car running reliably during longer stints.

Mercedes completed even more laps, even though they split duties between Nico Rosberg and Lewis Hamilton. Together they added 132 laps on the W05's already impressive tally.

In general, today was fairly busy day at Jerez and most teams as even Marussia completed 25 laps on only their first complete day of running for the MR03.

Troubles were again particularly for both Red Bull Technology teams. Red Bull Racing gave up at noon and started packing to return to the factory after the team encountered a new mechanical issue that was not easy to fix. Toro Rosso had Daniil Kvyat in the car, and even while he probably hoped for more running than on Wednesday he got stuck at 9 laps for the entire day.

The day did come to an early end 10 minutes before schedule when Kevin Magnussen crashed off with the McLaren. Moments later, Daniil Kvyat stopped at the same location.