Nakajima turns fastest lap of all
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| Kazuki Nakajima |
Kazuki Nakajima set the quickest time of the week at the Jerez circuit, as Formula 1 testing came to an end for the 2009 season.
Nakajima's 1:17.494 lap was nearly four tenths of a second quicker than the previous best, set by Brawn GP's Jenson Button on Tuesday.
| Pos | Driver | Team | Car | Time | Behind | Laps |
| 1. | K. Nakajima | Williams | FW31 | 1:17.494 | +0.000 | 102 |
| 2. | H. Kovalainen | McLaren | MP4-24 | 1:17.933 | +0.439 | 84 |