Kimi Raikkonen was the fastest on the final day of pre-season testing at the Circuit de Catalunya.
The Finn set a time of 1:22.030 in his Lotus Renault, which was 0.220 seconds faster than Fernando Alonso's Ferrari.
Brazil's Bruno Senna came in third-quickest in his Williams-Renault, ahead of Nico Hulkenberg's Force India and Kamui Kobayashi's Sauber.
Lewis Hamilton could only manage sixth fastest, while Red Bull's world champion Sebastian Vettel was slowest.
Full list:
1. Kimi Raikkonen (Fin) Lotus-Renault 1:22.030
2. Fernando Alonso (Spa) Ferrari 1:22.250
3. Bruno Senna (Brz) Williams-Renault 1:22.296
4. Nico Hulkenberg (Ger) Force India-Mercedes 1:22.312
5. Kamui Kobayashi (Jpn) Sauber-Ferrari 1:22.386
6. Lewis Hamilton (GB) McLaren-Mercedes 1:22.430
7. Vitaly Petrov (Rus) Caterham-Renault 1:22.795
8. Michael Schumacher (Ger) Mercedes 1:22.939
9. Pastor Maldonado (Ven) Williams-Renault 1:23.347
10. Daniel Ricciardo (Aus) Toro Rosso-Ferrari 1:23.393
11. Sebastian Vettel (Ger) Red Bull-Renault 1:23.608