Mercedes once again completed a record-breaking number of testing laps around the Circuit de Barcelona-Catalunya, with 185. For the second day in a row, the team split the driving between Lewis Hamilton, who completed 99 laps in the morning, and Nico Rosberg who managed 86 in the afternoon.

Raikkonen used the ultrasoft tyre to set the fastest time of the day, a 1m23.477s, which is 0.667s slower than the best lap of the whole test that his Ferrari teammate Sebastian Vettel posted on Tuesday.

The 2007 world champion completed 80 laps, just two more than his interrupted running yesterday, but still 105 off the benchmark set by the combined total of the two Mercedes drivers.

Daniil Kvyat was second fastest for Red Bull on a 1m24.293s, which he set mid-way through the afternoon session, as the Russian driver completed 96 laps on his second day in the RB12.

Force India’s development driver, Alfonso Celis Jr, returned to the cockpit of the VJM09 for the final day of the test after race drivers’ Nico Hulkenberg and Sergio Perez had undertaken the previous two days of running for the British squad.

Kevin Magnussen completed 153 laps, the most of any individual driver, for Renault and he finished the day fourth fastest despite causing a late red flag. Max Verstappen was fifth after 110 laps for Toro Rosso.

Felipe Nasr was sixth for Sauber – the final appearance of the team’s 2015 car – with Rosberg seventh, just in front of Hamilton. Both Mercedes again ran the medium Pirelli tyres and the team has not tried any soft compound rubber in the first four days of testing.

Felipe Massa ended up ninth for Williams and Esteban Gutierrez was tenth for Haas F1. The Mexican driver caused the second red flag of the day when his car stopped on the exit of Turn 4 with just over an hour of the day remaining.

Rio Haryanto was the slowest of the drivers to set a time, which was a 1m28.266s, and the Indonesian rookie brought out the red flags when he spun into the barriers at Turn 4 early in the afternoon and he did not return to the track.

Alonso completed just three laps for McLaren and did not set a time on his second day in the MP4-31 after a coolant leak early in the morning prevented the British squad from taking any further part in the session.

Results: Barcelona test one, day four:

1 Kimi Raikkonen Ferrari 1m23.477s, 80 laps
2 Daniil Kvyat Red Bull 1m24.293s +0.816s, 96 laps
3 Alfonso Celis Force India 1m24.840s +1.363s, 75 laps
4 Kevin Magnussen Renault 1m25.263s +1.786s, 153 laps
5 Max Verstappen Toro Rosso 1m25.393s +1.916s, 110 laps
6 Felipe Nasr Sauber 1m26.053s +2.576s, 121 laps
7 Nico Rosberg Mercedes 1m26.187s +2.710s, 86 laps
8 Lewis Hamilton Mercedes 1m26.295s +2.818s, 99 laps
9 Felipe Massa Williams 1m26.483s +3.006s, 54 laps
10 Esteban Gutierrez Haas 1m27.802s +4.325s, 89 laps
11 Rio Haryanto Manor 1m28.266s +4.789s, 51 laps
12 Fernando Alonso McLaren No time set, 3 laps

<FROM JAMES ALLEN>