Gabby Chaves showed why Addax signed him for their GP3 Series campaign by topping the timesheets on the opening day of the pre-season test at Silverstone.
The 17-year-old was only formally announced as a driver for the coming season by the Spanish team on the day prior to the test. He repaid the team's faith by beating more experienced names to post the fastest time of the day.
Status Grand Prix driver Antonio Felix da Costa was the early pacesetter in the morning session, remaining at the head of the timing screens until he was knocked off his perch by fellow Formula 3 Euroseries defector Valtteri Bottas of ART around two hours into the session.
Bottas improved his time in the final ten minutes of the session, shortly before Adrian Quaife-Hobbs brought out the red flag with thirty seconds left on the clock. Formula Renault graduate Lewis Williamson ended the morning in second position, just ahead of sophomore drivers Nigel Melker, Simon Trummer and Nico Muller.
Muller was the early pacesetter in the afternoon session, but following a red flag delay caused by Kiwi teenager Mitch Evans it was Chaves who set a benchmark time of 1m51.449. This time would remain unchallenged, thanks to the arrival of rain that led to the session being played out in damp conditions. Carlin driver Kotaro Sakurai caused the final red flag of the day. Muller ended the session second, ahead of Williamson, Alexander Sims and Marlon Stockinger.
Morning session:
| Pos | No | Driver | Nat | Team | Time | Gap | Laps |
| 1 | 2 | Valtteri Bottas | FIN | ART | 1:51.608 | 32 | |
| 2 | 28 | Lewis Williamson | GBR | Arden | 1:51.688 | +0.080 | 31 |
| 3 | 31 | Nigel Melker | NED | Mucke | 1:51.755 | +0.147 | 28 |
| 4 | 27 | Simon Trummer | SUI | Arden | 1:51.801 | +0.193 | 26 |
| 5 | 7 | Nico Muller | SUI | Jenzer | 1:51.816 | +0.208 | 26 |
| 6 | 5 | Antonio Felix Da Costa | POR | Status | 1:51.821 | +0.213 | 41 |
| 7 | 10 | Adrian Quaife-Hobbs | GBR | Manor | 1:51.920 | +0.312 | 20 |
| 8 | 20 | Marlon Stockinger | PHI | Atech CRS | 1:52.017 | +0.409 | 27 |
| 9 | 3 | James Calado | GBR | ART | 1:52.025 | +0.417 | 33 |
| 10 | 1 | Pedro Nunes | BRA | ART | 1:52.053 | +0.445 | 34 |
| 11 | 30 | Michael Christensen | DEN | Mucke | 1:52.213 | +0.605 | 35 |
| 12 | 11 | Rio Haryanto | INA | Manor | 1:52.348 | +0.740 | 25 |
| 13 | 21 | Nick Yelloly | GBR | Atech CRS | 1:52.422 | +0.814 | 18 |
| 14 | 26 | Mitch Evans | NZL | Arden | 1:52.505 | +0.897 | 32 |
| 15 | 4 | Alexander Sims | GBR | Status | 1:52.510 | +0.902 | 25 |
| 16 | 19 | Tamas Pal Kiss | HUN | Tech 1 | 1:52.518 | +0.910 | 30 |
| 17 | 17 | Aaro Vainio | FIN | Tech 1 | 1:52.556 | +0.948 | 25 |
| 18 | 24 | Gabby Chaves | USA | Addax | 1:52.563 | +0.955 | 28 |
| 19 | 14 | Conor Daly | USA | Carlin | 1:52.777 | +1.169 | 33 |
| 20 | 12 | Matias Laine | FIN | Manor | 1:52.794 | +1.186 | 34 |
| 21 | 18 | Andrea Caldarelli | ITA | Tech 1 | 1:52.803 | +1.195 | 34 |
| 22 | 9 | Vittorio Ghirelli | ITA | Jenzer | 1:52.935 | +1.327 | 31 |
| 23 | 29 | Willi Steindl | AUT | Mucke | 1:52.955 | +1.347 | 32 |
| 24 | 16 | Kotaro Sakurai | JPN | Carlin | 1:53.009 | +1.401 | 28 |
| 25 | 22 | Zoel Amburg | SUI | Atech CRS | 1:53.315 | +1.707 | 38 |
| 26 | 8 | Maxim Zimin | RUS | Jenzer | 1:53.490 | +1.882 | 27 |
| 27 | 23 | Thomas Hylkema | NED | Addax | 1:53.563 | +1.955 | 40 |
| 28 | 15 | Tom Dillmann | FRA | Carlin | 1:53.858 | +2.250 | 31 |
| 29 | 6 | Ivan Lukashevich | RUS | Status | 1:54.344 | +2.736 | 36 |
| 30 | 25 | Fernando Monje | ESP | Addax | 1:54.504 | +2.896 | 35 |
Afternoon session:
| Pos | No | Driver | Nat | Team | Time | Gap | Laps |
| 1 | 24 | Gabby Chaves | USA | Addax | 1:51.449 | 22 | |
| 2 | 7 | Nico Muller | SUI | Jenzer | 1:51.596 | +0.147 | 19 |
| 3 | 28 | Lewis Williamson | GBR | Arden | 1:51.641 | +0.192 | 27 |
| 4 | 4 | Alexander Sims | GBR | Status | 1:51.752 | +0.303 | 24 |
| 5 | 20 | Marlon Stockinger | PHI | Atech CRS | 1:51.775 | +0.326 | 11 |
| 6 | 10 | Adrian Quaife-Hobbs | GBR | Manor | 1:51.981 | +0.532 | 28 |
| 7 | 9 | Vittorio Ghirelli | ITA | Jenzer | 1:52.328 | +0.879 | 26 |
| 8 | 11 | Rio Haryanto | INA | Manor | 1:52.472 | +1.023 | 30 |
| 9 | 27 | Simon Trummer | SUI | Arden | 1:52.538 | +1.089 | 24 |
| 10 | 15 | Tom Dillmann | FRA | Carlin | 1:52.557 | +1.108 | 19 |
| 11 | 26 | Mitch Evans | NZL | Arden | 1:52.741 | +1.292 | 22 |
| 12 | 30 | Michael Christensen | DEN | Mucke | 1:52.770 | +1.321 | 25 |
| 13 | 3 | James Calado | GBR | ART | 1:52.886 | +1.437 | 29 |
| 14 | 5 | Antonio Felix Da Costa | POR | Status | 1:52.940 | +1.491 | 23 |
| 15 | 25 | Fernando Monje | ESP | Addax | 1:52.976 | +1.527 | 22 |
| 16 | 1 | Pedro Nunes | BRA | ART | 1:53.021 | +1.572 | 30 |
| 17 | 23 | Thomas Hylkema | NED | Addax | 1:53.081 | +1.632 | 18 |
| 18 | 12 | Matias Laine | FIN | Manor | 1:53.214 | +1.765 | 23 |
| 19 | 2 | Valtteri Bottas | FIN | ART | 1:53.249 | +1.800 | 31 |
| 20 | 17 | Aaro Vainio | FIN | Tech 1 | 1:53.263 | +1.814 | 19 |
| 21 | 8 | Maxim Zimin | RUS | Jenzer | 1:53.436 | +1.987 | 24 |
| 22 | 22 | Zoel Amberg | SUI | Atech CRS | 1:53.682 | +2.233 | 24 |
| 23 | 29 | Willi Steindl | AUT | Mucke | 1:53.803 | +2.354 | 27 |
| 24 | 19 | Tamas Pal Kiss | HUN | Tech 1 | 1:53.895 | +2.446 | 27 |
| 25 | 16 | Kotaro Sakurai | JPN | Carlin | 1:53.941 | +2.492 | 11 |
| 26 | 18 | Andrea Caldarelli | ITA | Tech 1 | 1:53.980 | +2.531 | 21 |
| 27 | 31 | Nigel Melker | NED | Mucke | 1:53.989 | +2.540 | 27 |
| 28 | 14 | Conor Daly | USA | Carlin | 1:54.967 | +3.518 | 15 |
| 29 | 21 | Nick Yelloly | GBR | Atech CRS | 1:55.075 | +3.626 | 20 |
| 30 | 6 | Ivan Lukashevich | RUS | Status | 1:59.785 | +8.336 | 19 |
