Photo: Sam Bloxham/GP2 Media Service
GP2’s points leader Stoffel Vandoorne topped the practice session of the Hungarian round by almost half a second.
The Belgian took the lead in the early stages of the running, ending up as the only driver to dip below the 1.29s barrier.
As improvements became scarce?in the second half, the McLaren junior remained first with a lead of four tenths.
His closest pursuer was Rio Haryanto, three-time sprint race winner this year.
Alex Lynn ended the session in third, closely followed by French duo Arthur Pic and Pierre Gasly, who completed strong runs for their teams Campos and DAMS respectively.
Raffaele Marciello was sixth quickest ahead of Andre Negrao and Nick Yelloly, while Silverstone winner Sergey Sirotkin and Mitch Evans completed the top ten.
Championship runner-up Alexander Rossi ended up 11th, a second slower than pace-setter Vandoorne.
Nicholas Latifi, who returns after taking part in the final round last year, and debutant Sean Gelael completed the practice in 25th and 26th respectively.
Session results
| Pos. | Driver | Team | Time | Gap | Laps |
| 1 | Stoffel Vandoorne | ART Grand Prix | 1:28.969 | 20 | |
| 2 | Rio Haryanto | Campos Racing | 1:29.384 | 0.415 | 18 |
| 3 | Alex Lynn | DAMS | 1:29.499 | 0.530 | 21 |
| 4 | Arthur Pic | Campos Racing | 1:29.552 | 0.583 | 18 |
| 5 | Pierre Gasly | DAMS | 1:29.562 | 0.593 | 20 |
| 6 | Raffaele Marciello | Trident | 1:29.742 | 0.773 | 21 |
| 7 | Andre Negrao | Arden International | 1:29.797 | 0.828 | 19 |
| 8 | Nick Yelloly | Hilmer Motorsport | 1:29.856 | 0.887 | 19 |
| 9 | Sergey Sirotkin | Rapax | 1:29.873 | 0.904 | 21 |
| 10 | Mitch Evans | Russian Time | 1:29.939 | 0.970 | 19 |
| 11 | Alexander Rossi | Racing Engineering | 1:29.971 | 1.002 | 17 |
| 12 | Jordan King | Racing Engineering | 1:30.073 | 1.104 | 19 |
| 13 | Norman Nato | Arden International | 1:30.164 | 1.195 | 17 |
| 14 | Daniel de Jong | MP Motorsport | 1:30.375 | 1.406 | 19 |
| 15 | Julian Leal | Carlin | 1:30.475 | 1.506 | 18 |
| 16 | Richie Stanaway | Status Grand Prix | 1:30.575 | 1.606 | 18 |
| 17 | Nobuharu Matsushita | ART Grand Prix | 1:30.578 | 1.609 | 19 |
| 18 | Robert Visoiu | Rapax | 1:30.763 | 1.794 | 19 |
| 19 | Rene Binder | Trident | 1:30.802 | 1.833 | 17 |
| 20 | Artem Markelov | Russian Time | 1:30.902 | 1.933 | 17 |
| 21 | Nathanael Berthon | Daiko Team Lazarus | 1:30.930 | 1.961 | 15 |
| 22 | Marlon Stockinger | Status Grand Prix | 1:30.954 | 1.985 | 18 |
| 23 | Sergio Canamasas | Hilmer Motorsport | 1:31.107 | 2.138 | 18 |
| 24 | Zoel Amberg | Daiko Team Lazarus | 1:31.575 | 2.606 | 12 |
| 25 | Nicholas Latifi | MP Motorsport | 1:31.674 | 2.705 | 20 |
| 26 | Sean Gelael | Carlin | 1:32.200 | 3.231 | 22 |