The BMW WilliamsF1 team would return to testing , this time at the Jerez circuit, in preparation for the French Grand Prix at Magny-Cours. Test driver Antonio Pizzonia was joined by Nick Heidfeld as the team tested several new developments for the FW27.

The team had a new aerodynamic package that will be used at the French Grand Prix. The job of testing this was given to Nick but he was to have difficulties with over heating problems with the car. He would only complete twenty eight laps and would finish slowest on the day with a time of 1m:19.968.

The day would not go any better for Antonio as he was to crash his car in the morning session. This would see the session red=flagged as his car was returned to the teams garage. Prior to his accident he would focus on tyre testing for Michelin. He would complete sixty four laps with a best time of 1m:18.683.

WilliamsF1 Test Team Manager Tim Newton commented: "Antonio Pizzonia spent today’s session tyre testing with Michelin while Nick Heidfeld completed some exploratory running of the new MK2 bodywork. Over the course of the day, we identified some expected teething problems which we will be working on this evening before re-evaluating tomorrow. At present, it looks promising but we have some homework to do. Both Nick and Antonio will be on duty again for the team tomorrow.”"

Driver		Car / Engine	 Best	  Laps      Tyres

J P Montoya	McLaren Mercedes 1:17.370 21 / 57       M
J Button	BAR Honda	 1:17.555 29 / 115 	M
T Sato		BAR Honda	 1:17.708 87 / 118 	M
F Montagny	RenaultF1 Team	 1:17.783 63 / 80  	M
R Zonta		Toyota Racing	 1:17.953 25 / 108 	M
H Kovalainen	Renault F1 Team	 1:18.076 66 / 69  	M
O Panis		Toyota Racing	 1:18.497 22 / 41  	M
A Pizzonia	BMW WilliamsF1	 1:18.683 51 / 65  	M
C Klien		Red Bull Racing	 1:18.798 64 / 70  	M
A Wurz		McLaren Mercedes 1:19.246 4 / 8    	M
D Coulthard	Red Bull Racing	 1:19.472 10 / 63  	M
J Villeneuve	Sauber Petronas	 1:19.622 37 / 106 	M
N Heidfeld	BMW WilliamsF1	 1:19.968 21 / 29  	M