ART’s Anthoine Hubert has gone fastest in the final pre-season test day at Barcelona ahead of the 2018 GP3 season.
The Frenchman set a time of 1m31.751s in the morning session to lead the way ahead of team-mates Callum Ilott and Jake Hughes, the only drivers to lap under 1m32s.
This is the third time in six sessions that Hubert has placed on top of timesheets.
Dorian Boccolacci finished in fourth, with Leonardo Pulcini fifth.
Force India Formula 1 tester Nikita Mazepin ended in sixth above Sauber F1 test driver Tatiana Calderon.
Ferrari academy racer Giuliano Alesi was eighth in the opening hours before setting the best lap of the afternoon running.
The Frenchman found a time of 1m32.901s to top the timesheets, moving Calderon from the position during the last hour.
Julien Falchero and Niko Kari completed the overall top 10.
The same Spanish circuit will host the first event of the final year of the category on May 11-13.
| Pos. | Driver | Team | Morning | Laps | Afternoon | Laps |
| 1 | Anthoine Hubert | ART | 1m31.751s | 54 | 1m35.499s | 41 |
| 2 | Callum Ilott | ART | 1m31.780s | 57 | 1m35.433s | 37 |
| 3 | Jake Hughes | ART | 1m31.983s | 57 | 1m34.724s | 40 |
| 4 | Dorian Boccolacci | MP | 1m32.049s | 44 | 1m34.960s | 42 |
| 5 | Leonardo Pulcini | Campos | 1m32.073s | 43 | 1m35.078s | 36 |
| 6 | Nikita Mazepin | ART | 1m32.290s | 45 | 1m34.404s | 38 |
| 7 | Tatiana Calderon | Jenzer | 1m32.378s | 35 | 1m33.154s | 33 |
| 8 | Giuliano Alesi | Trident | 1m32.383s | 36 | 1m32.901s | 44 |
| 9 | Julien Falchero | Arden | 1m32.418s | 50 | 1m35.629s | 39 |
| 10 | Niko Kari | MP | 1m32.479s | 49 | 1m35.303s | 41 |
| 11 | Pedro Piquet | Trident | 1m32.484s | 49 | 1m33.256s | 50 |
| 12 | Simo Laaksonen | Campos | 1m32.520s | 38 | 1m33.802s | 55 |
| 13 | Will Palmer | MP | 1m32.579s | 49 | 1m35.355s | 41 |
| 14 | David Beckmann | Jenzer | 1m32.633s | 46 | 1m33.611s | 40 |
| 15 | Juan Manuel Correa | Jenzer | 1m32.803s | 41 | 1m33.396s | 32 |
| 16 | Joey Mawson | Arden | 1m32.839s | 40 | 1m33.606s | 34 |
| 17 | Diego Menchaca | Campos | 1m32.914s | 35 | 1m33.635s | 50 |
| 18 | Ryan Tveter | Trident | 1m32.937s | 41 | 1m33.719s | 49 |
| 19 | Gabriel Aubry | Arden | 1m33.392s | 51 | 1m34.189s | 43 |
| 20 | Alessio Lorandi | Trident | 1m43.109s | 3 | No time set | 0 |
