Marcus Ericsson ended the two-day GP2 Series pre-season test at Silverstone on top after posting the fastest time on the second day of running.
Conditions had improved considerably from the cold and wet of Tuesday, with sunshine greeting the teams and drivers at the beginning of the morning session.
Giedo van der Garde was the early pacesetter for Addax, before Sam Bird went top for iSport. He was later replaced at the top by fellow Brit Jolyon Palmer of Arden, the Formula 2 graduate going half a second quicker than Bird. Soon after though Jules Bianchi moved ahead.
In the second half of the session Christian Vietoris posted a benchmark time for Racing Engineering, which nobody else would match. The German managed to improve his personal best further to end the session more than two tenths ahead of Bianchi. Ericsson was third for iSport, ahead of Dani Clos and Bird.
The temperature increased further for the afternoon session, with Vietoris carrying on where had left off and setting the early pace. ART teammates Bianchi and Esteban Gutierrez headed the field at the one-hour mark. Vietoris later returned to the top spot, before Ericsson took the lead with 45 minutes remaining. Michael Herck then went top, but Ericsson was able to reclaim the position before the end of the session. The Swede's time was the best of the day, six hundredths of a second up on Vietoris' morning benchmark. Bianchi was second again in the afternoon session, with Charles Pic, Vietoris and Day 1 pacesetter Romain Grosjean rounding out the top five for the session.
GP2 testing will resume at Barcelona's Circuit de Catalunya on 19-20 April.
Morning session:
| Driver | Team | Laptime | Gap | Laps | |
| 1. | Christian Vietoris | Racing Engineering | 1:40.218 | 31 | |
| 2. | Jules Bianchi | Lotus ART | 1:40.442 | +0.224 | 36 |
| 3. | Marcus Ericsson | iSport International | 1:40.505 | +0.287 | 34 |
| 4. | Dani Clos | Racing Engineering | 1:40.562 | +0.344 | 31 |
| 5. | Sam Bird | iSport International | 1:40.653 | +0.435 | 29 |
| 6. | Charles Pic | Barwa Addax Team | 1:40.692 | +0.474 | 33 |
| 7. | Romain Grosjean | Dams | 1:40.711 | +0.493 | 30 |
| 8. | Giedo van der Garde | Barwa Addax Team | 1:40.760 | +0.542 | 21 |
| 9. | Jolyon Palmer | Arden International | 1:40.840 | +0.622 | 36 |
| 10. | Max Chilton | Carlin | 1:41.024 | +0.806 | 25 |
| 11. | Oliver Turvey | Carlin | 1:41.027 | +0.809 | 21 |
| 12. | Fabio Leimer | Rapax | 1:41.153 | +0.935 | 20 |
| 13. | Davide Valsecchi | Team AirAsia | 1:41.183 | +0.965 | 35 |
| 14. | Michael Herck | Scuderia Coloni | 1:41.271 | +1.053 | 25 |
| 15. | Esteban Gutierrez | Lotus ART | 1:41.504 | +1.286 | 31 |
| 16. | Johnny Cecotto | Ocean Racing Technology | 1:41.587 | +1.369 | 22 |
| 17. | Davide Rigon | Scuderia Coloni | 1:41.591 | +1.373 | 31 |
| 18. | Luiz Razia | Team AirAsia | 1:41.634 | +1.416 | 22 |
| 19. | Julian Leal | Rapax | 1:41.735 | +1.517 | 28 |
| 20. | Luca Filippi | Super Nova Racing | 1:41.845 | +1.627 | 21 |
| 21. | Fairuz Fauzy | Super Nova Racing | 1:41.905 | +1.687 | 22 |
| 22. | Stefano Coletti | Trident Racing | 1:42.000 | +1.782 | 16 |
| 23. | Josef Kral | Arden International | 1:42.010 | +1.792 | 23 |
| 24. | Pal Varhaug | Dams | 1:42.064 | +1.846 | 31 |
| 25. | Kevin Mirocha | Ocean Racing Technology | 1:42.092 | +1.874 | 36 |
| 26. | Rodolfo Gonzalez | Trident Racing | 1:42.107 | +1.889 | 26 |
Afternoon session:
| Driver | Team | Laptime | Gap | Laps | |
| 1. | Marcus Ericsson | iSport International | 1:40.154 | 31 | |
| 2. | Jules Bianchi | Lotus ART | 1:40.322 | +0.168 | 36 |
| 3. | Charles Pic | Barwa Addax Team | 1:40.586 | +0.432 | 29 |
| 4. | Christian Vietoris | Racing Engineering | 1:40.589 | +0.435 | 38 |
| 5. | Romain Grosjean | Dams | 1:40.623 | +0.469 | 23 |
| 6. | Esteban Gutierrez | Lotus ART | 1:40.645 | +0.491 | 30 |
| 7. | Oliver Turvey | Carlin | 1:40.772 | +0.618 | 29 |
| 8. | Luiz Razia | Team AirAsia | 1:40.925 | +0.771 | 33 |
| 9. | Max Chilton | Carlin | 1:40.929 | +0.775 | 27 |
| 10. | Johnny Cecotto | Ocean Racing Technology | 1:40.936 | +0.782 | 30 |
| 11. | Dani Clos | Racing Engineering | 1:41.019 | +0.865 | 28 |
| 12. | Giedo van der Garde | Barwa Addax Team | 1:41.032 | +0.878 | 31 |
| 13. | Pal Varhaug | Dams | 1:41.133 | +0.979 | 33 |
| 14. | Stefano Coletti | Trident Racing | 1:41.241 | +1.087 | 28 |
| 15. | Michael Herck | Scuderia Coloni | 1:41.346 | +1.192 | 21 |
| 16. | Davide Valsecchi | Team AirAsia | 1:41.375 | +1.221 | 38 |
| 17. | Davide Rigon | Scuderia Coloni | 1:41.378 | +1.224 | 32 |
| 18. | Josef Kral | Arden International | 1:41.416 | +1.262 | 16 |
| 19. | Luca Filippi | Super Nova Racing | 1:41.432 | +1.278 | 34 |
| 20. | Sam Bird | iSport International | 1:41.503 | +1.349 | 16 |
| 21. | Julian Leal | Rapax | 1:41.600 | +1.446 | 33 |
| 22. | Rodolfo Gonzalez | Trident Racing | 1:41.701 | +1.547 | 30 |
| 23. | Fabio Leimer | Rapax | 1:41.839 | +1.685 | 38 |
| 24. | Kevin Mirocha | Ocean Racing Technology | 1:41.866 | +1.712 | 40 |
| 25. | Jolyon Palmer | Arden International | 1:42.012 | +1.858 | 25 |
| 26. | Fairuz Fauzy | Super Nova Racing | 1:42.240 | +2.086 | 27 |
