Photo: Alastair Staley/GP3 Series Media Service
Oscar Tunjo set the pace on the first day of the final GP3 pre-season test at Barcelona.
The Colombian, returning to GP3 this year with Jenzer, led the morning session with a time of 1m33.554s.
He was almost three tenths of a second ahead of second-placed Trident driver Antonio Fuoco, who was followed by the Koiranen duo of Ralph Boschung and Matt Parry and the Arden pair Jack Aitken and Tatiana Calderon.
Charles Leclerc was seventh in the morning – ahead of Matevos Isaakyan, Nirei Fukuzumi and Alex Palou – before topping the afternoon session, albeit more than 1.5s off Tunjo’s earlier benchmark.
Jake Hughes was second ahead of Palou and Santino Ferrucci. Steijn Schothorst and Alex Albon made the top six, with Tunjo seventh.
Combined day one times
| Pos. | Driver | Team | Session 1 | Session 2 |
| 1 | Oscar Tunjo | Jenzer Motorsport | 1:33.554 | 1:35.451 |
| 2 | Antonio Fuoco | Trident | 1:33.843 | 1:38.757 |
| 3 | Ralph Boschung | Koiranen GP | 1:33.922 | 1:38.542 |
| 4 | Matthew Parry | Koiranen GP | 1:34.036 | 1:37.920 |
| 5 | Jack Aitken | Arden International | 1:34.046 | 1:36.104 |
| 6 | Tatiana Calderon | Arden International | 1:34.081 | 1:36.936 |
| 7 | Charles Leclerc | ART Grand Prix | 1:34.160 | 1:35.167 |
| 8 | Matevos Isaakyan | Koiranen GP | 1:34.198 | 1:35.814 |
| 9 | Nirei Fukuzumi | ART Grand Prix | 1:34.245 | 1:35.576 |
| 10 | Alex Palou | Campos Racing | 1:34.345 | 1:35.205 |
| 11 | Jake Hughes | DAMS | 1:34.350 | 1:35.198 |
| 12 | Alex Albon | ART Grand Prix | 1:34.441 | 1:35.427 |
| 13 | Kevin Jorg | DAMS | 1:34.529 | 1:36.030 |
| 14 | Nyck de Vries | ART Grand Prix | 1:34.565 | 1:35.718 |
| 15 | Steijn Schothorst | Campos Racing | 1:34.623 | 1:35.376 |
| 16 | Jake Dennis | Arden International | 1:34.715 | 1:36.045 |
| 17 | Giuliano Alesi | Trident | 1:34.822 | 1:35.934 |
| 18 | Artur Janosz | Trident | 1:34.823 | 1:37.163 |
| 19 | Santino Ferrucci | DAMS | 1:34.928 | 1:35.371 |
| 20 | Richard Gonda | Jenzer Motorsport | 1:35.122 | 1:36.476 |
| 21 | Sandy Stuvik | Trident | 1:35.251 | 1:35.780 |
| 22 | Konstantin Tereshchenko | Campos Racing | 1:35.261 | 1:35.734 |
| 23 | Akash Nandy | Jenzer Motorsport | 1:35.902 | 1:36.132 |