Felipe Massa set the fastest time on the third day of testing at Jerez in Spain.
The Brazilian's time of 1:17.879 wasn't headed as he concludes his three day stint in the Ferrari F138, handing over to Pedro de La Rosa tomorrow.
After a difficult start to 2013 that included a minor fire and a crash, Mercedes got some good running under their belt as Nico Rosberg completed 148 laps, finishing in second place behind Massa.
World champions Sebastian Vettel and Kimi Raikkonen got their first taste of 2013 machinery, as did the Toro Rosso driver Jean Eric Vergne. Vettel completed 101 laps as he returned to the cockpit for the first time since his thrilling title win in Brazil last year.
Jenson Button resumed testing duties for McLaren, although he will hand over to team-mate Sergio Perez tomorrow. Button brought the day to a halt five minutes early when he stopped on track.
There was drama in the morning for Force India as James Rossiter missed his braking point in the pits and struck a mechanic. He was bruised and shaken but sustained no further injuries. Rossiter took the blame for the incident, citing cold brakes and tyres. An exhaust failure later in the day limited Paul di Resta's running to just seven laps. Jules Bianchi, a candidate for the vacant second seat, tests the VJM06 tomorrow.
Esteban Gutierrez completed his first run in the Sauber C32 and he was the third driver to break the hundred laps barrier. He eventually drove for 110 laps, finishing in eighth place.
Williams rookie Valtteri Bottas took to the track for the first time in the modified FW34, while Charles Pic also made his Caterham début in the CT03. The French driver suffered a mechanical failure early on but returned to the track later on.
Max Chilton was back in the Marussia MR02 and he set the team's fastest time of the week, ending up in ninth place. Fellow rookie Luiz Razia returns to the car tomorrow.
Pos | Driver | Team/Car | Time | Gap | Laps |
1 | F. Massa | Ferrari F138 | 1:17.879 | 85 | |
2 | N. Rosberg | Mercedes W04 | 1:18.766 | +0.887 | 148 |
3 | S. Vettel | Red Bull RB9 | 1:19.052 | +1.173 | 102 |
4 | K. Raikkonen | Lotus E21 | 1:19.200 | +1.321 | 40 |
5 | JE. Vergne | Toro Rosso STR8 | 1:19.247 | +1.368 | 85 |
6 | J. Rossiter | Force India VJM06 | 1:19.303 | +1.424 | 42 |
7 | J. Button | McLaren MP4-28 | 1:19.603 | +1.724 | 83 |
8 | E. Gutierrez | Sauber C32 | 1:19.934 | +2.055 | 110 |
9 | M. Chilton | Marussia MR02 | 1:21.269 | +3.390 | 78 |
10 | V. Bottas | Williams FW34 | 1:21.575 | +3.696 | 86 |
11 | C. Pic | Caterham CT03 | 1:22.352 | +4.473 | 57 |
12 | P. di Resta | Force India VJM06 | 1:23.729 | +5.850 | 7 |