The team would spend the day conducting a mixture of tests with Juan Pablo conducting loner runs with the FW25 in the afternoon, as well as tyre tests with the FW24. Juan Pablo would complete one hundred and four laps over the course of the day, a total of 416.52 kilometres.

His best time of the day would be a lap time of 1m:10.556. This would be almost a second faster than the second placed driver Jaguar's Mark Webber.

Spaniard Marc Gene and German Ralf Schumacher followed in the second and third. Marc would complete sixty two laps whilst conducting set-up work. Ralf would only complete twenty two laps having suffered a broken drive shaft in the morning session. Marc would set a best time of 1m:12.485 while Ralf did a 1m:12.634.

For WilliamsF1 Test Team Manager Tim Newton he spoke of the day by saying:
“The test team worked really hard today as again we had all three drivers on the track in three cars. Juan completed a successful race simulation in addition to some tyre work driving an FW24. Marc was running an FW25 for continued systems and set-up work and Ralf who was also in an FW25 was assisting the team in some practice race situations."

Pos Driver Team/Engine Time Laps

1. JP Montoya WilliamsF1 BMW 1:10.556 47/104
2. M Webber Jaguar 1:11.466 36/111
3. G Fisichella Jordan Ford 1:11.824 56/64
4. J Button BAR Honda 1:11.987 64/80
5. M Gene WilliamsF1 BMW 1:12.485 51/62
6. R Schumacher WilliamsF1 BMW 1:12.634 20/22