| Date: | Wednesday, 19 November 2008 |
| Session: | Day 3 (of 3) |
| Track: | Barcelona |
| Track length: | 4.655 km |
| Weather: | Sunny (Air: 7-18°C, Track: 8-23°C) |
| News article: | Barcelona: Vettel dominates on day 3 Barcelona: Day 3 team test notes |
| P | Driver | Constructor | Car | T | Time | Gap | Avg Speed | Laps |
| 1 | Sebastian Vettel | Red Bull-Renault | RB4 | B | 1:19.295 | 211.337 | 75 | |
| 2 | Sébastien Bourdais | Toro Rosso-Ferrari | STR3 | B | 1:19.839 | 0.544 | 209.897 | 122 |
| 3 | Sébastien Buemi | Toro Rosso-Ferrari | STR3 | B | 1:20.154 | 0.859 | 209.073 | 115 |
| 4 | Gary Paffett | McLaren-Mercedes | MP4-23K | B | 1:21.140 | 1.845 | 206.532 | 81 |
| 5 | Jenson Button | Honda | RA108 | B | 1:21.387 | 2.092 | 205.905 | 94 |
| 6 | Christian Klien | BMW Sauber-BMW | F1.08B | B | 1:21.534 | 2.239 | 205.534 | 88 |
| 7 | Nick Heidfeld | BMW Sauber-BMW | F1.08B | B | 1:21.592 | 2.297 | 205.388 | 106 |
| 8 | Bruno Senna | Honda | RA108 | B | 1:21.676 | 2.381 | 205.177 | 107 |
| 9 | Nelson Piquet jr. | Renault | R28 | B | 1:22.148 | 2.853 | 203.998 | 94 |
| 10 | Nico Hülkenberg | Williams-Toyota | FW30B | B | 1:22.410 | 3.115 | 203.349 | 52 |
| 11 | Luca Badoer | Ferrari | F2008 | B | 1:22.866 | 3.571 | 202.230 | 120 |
| 12 | Giancarlo Fisichella | Force India-Ferrari | VJM01 | B | 1:23.086 | 3.791 | 201.695 | 93 |
| 13 | Pedro de la Rosa | Force India-Ferrari | VJM01 | B | 1:23.103 | 3.808 | 201.653 | 88 |
| 14 | Gary Paffett | McLaren-Mercedes | MP4-23 | B | No Time | 3 |