| Date: | Monday, 17 November 2008 |
| Session: | Day 1 (of 3) |
| Track: | Barcelona |
| Track length: | 4.655 km |
| Weather: | Sunny (Air: 6-18°C. Track: 8-21°C) |
| News article: | Barcelona: Sato tops first winter test for STR Barcelona: Day 1 team test notes |
| P | Driver | Constructor | Car | T | Time | Gap | Avg Speed | Laps |
| 1 | Takuma Sato | Toro Rosso-Ferrari | STR3 | B | 1:20.763 | 207.496 | 121 | |
| 2 | Sébastien Buemi | Toro Rosso-Ferrari | STR3 | B | 1:21.071 | 0.308 | 206.708 | 117 |
| 3 | Alexander Wurz | Honda | RA108 | B | 1:21.198 | 0.435 | 206.384 | 77 |
| 4 | Pedro de la Rosa | McLaren-Mercedes | MP4-23K | B | 1:21.417 | 0.654 | 205.829 | 65 |
| 5 | Gary Paffett | McLaren-Mercedes | MP4-23 | B | 1:21.956 | 1.193 | 204.476 | 78 |
| 6 | Luca Badoer | Ferrari | F2008 | B | 1:22.038 | 1.275 | 204.271 | 94 |
| 7 | Robert Kubica | BMW Sauber-BMW | F1.08B | B | 1:22.341 | 1.578 | 203.520 | 56 |
| 8 | Sébastien Loeb | Red Bull-Renault | RB4 | B | 1:22.503 | 1.740 | 203.120 | 82 |
| 9 | Nelson Piquet jr. | Renault | R28 | B | 1:22.560 | 1.797 | 202.980 | 80 |
| 10 | Christian Klien | BMW Sauber-BMW | F1.08B | B | 1:22.883 | 2.120 | 202.189 | 53 |
| 11 | Nico Hülkenberg | Williams-Toyota | FW30B | B | 1:23.467 | 2.704 | 200.774 | 116 |
| 12 | Vitantonio Liuzzi | Force India-Ferrari | VJM01 | B | 1:23.794 | 3.031 | 199.990 | 86 |
| 13 | Adrian Sutil | Force India-Ferrari | VJM01 | B | 1:23.832 | 3.069 | 199.900 | 88 |
| 14 | Marc Gené | Ferrari | F2008 | B | 1:24.177 | 3.414 | 199.081 | 32 |
| 15 | Bruno Senna | Honda | RA108 | B | 1:24.343 | 3.580 | 198.689 | 39 |
| 16 | Giedo van der Garde | Renault | R28 | B | 1:24.908 | 4.145 | 197.367 | 32 |
| 17 | Lucas Di Grassi | Honda | RA108 | B | 1:25.512 | 4.749 | 195.972 | 48 |