Nico Muller topped the second GP3 practice session at Barcelona as less than one tenth of a second covered the top three runners. The Jenzer driver moved to the top of the times shortly before the halfway mark in the 30-minute session.
There were no significant improvements from the other frontrunners from then on, leaving his slender gap over Rio Haryanto (Manor) and Andrea Caldarelli (Tech 1) safe.
Places four to six were taken by the three ART cars. James Calado led the trio of French cars ahead of Pedro Nunes, while morning pacesetter Valtteri Bottas was the only front runner to move up the order in the second half of the session as he took sixth.
Manor's Adrian Quaife-Hobbs took seventh despite his session ending early in the Turn 3 gravel trap. Next up was Tamas Pal Kiss, while Alexander Sims and Mitch Evans completed the top 10.
Pos Driver Team Time Gap
1. Nico Muller Jenzer 1m39.791s
2. Rio Haryanto Manor 1m39.873s + 0.082s
3. Andrea Caldarelli Tech 1 1m39.884s + 0.093s
4. James Calado ART 1m40.037s + 0.246s
5. Pedro Nunes ART 1m40.040s + 0.249s
6. Valtteri Bottas ART 1m40.072s + 0.281s
7. Adrian Quaife-Hobbs Manor 1m40.117s + 0.326s
8. Tamas Pal Kiss Tech 1 1m40.219s + 0.428s
9. Alexander Sims Status 1m40.303s + 0.512s
10. Mitch Evans MW Arden 1m40.312s + 0.521s
11. Gabby Chaves Addax 1m40.314s + 0.523s
12. Aaro Vainio Tech 1 1m40.349s + 0.558s
13. Matias Laine Manor 1m40.372s + 0.581s
14. Michael Christensen RSC Mucke 1m40.399s + 0.608s
15. Vittorio Ghirelli Jenzer 1m40.426s + 0.635s
16. Nigel Melker RSC Mucke 1m40.449s + 0.658s
17. Daniel Morad Carlin 1m40.576s + 0.785s
18. Nick Yelloly Atech CRS 1m40.595s + 0.804s
19. Marlon Stockinger Atech CRS 1m40.624s + 0.833s
20. Leonardo Cordeiro Carlin 1m40.705s + 0.914s
21. Lewis Williamson MW Arden 1m40.773s + 0.982s
22. Simon Trummer MW Arden 1m40.789s + 0.998s
23. Antonio Felix da Costa Status 1m40.809s + 1.018s
24. Dominic Storey Addax 1m40.912s + 1.121s
25. Conor Daly Carlin 1m41.079s + 1.288s
26. Zoel Amberg Atech CRS 1m41.280s + 1.489s
27. Ivan Lukashevich Status 1m41.416s + 1.625s
28. Luciano Bacheta RSC Mucke 1m41.929s + 2.138s
29. Maxim Zimin Jenzer 1m42.021s + 2.230s