Marc's day was spent focusing on various setups for the FW26 as well as tyre testing fro Michelin including testing various constructions and compounds. He would  complete 109 laps, with his best lap time been a 1m:15.211.

Scott Dixon's day would see him getting use to the FW26 before working on various setups later in the day. he would complete 96 laps, his best lap being a 1m:15.922. This would see him ninth and only 0.7 behind more experienced Gene.

WilliamsF1 Test Team Manager Tim Newton commented on the days testing:  "Marc Gené and Scott Dixon were on hand to carry out testing duties today for our first of three days at Barcelona. In preparation for the forthcoming European rounds, Marc spent the day concentrating on set-up work on the FW26 as well as performing some tyre testing with Michelin. Scott spent the majority of the morning completing familiarisation laps while, in the afternoon, he concentrated on set-up work of the FW26."

Marc and Scott will continue testing at Barcelona on Thursday, when they will be joined by Ralf Schumacher.

Pos Driver Team-Engine Tyres Time Laps

1. Sato BAR-Honda (M) 1:14.687 106
2. Trulli Renault (M) 1:14.702 75
3. Badoer Ferrari (B) 1:14.864 111
4. Wurz McLaren-Mercedes (M) 1:14.935 66
5. Alonso Renault (M) 1:15.119 54
6. Gene Williams-BMW (M) 1:15.211 109
7. Panis Toyota (M) 1:15.803 99
8. Coulthard McLaren-Mercedes (M) 1:15.835 72
9. Dixon Williams-BMW (M) 1:15.922 96
10. Zonta Toyota (M) 1:16.144 97
11. Wirdheim Jaguar-Cosworth (M) 1:16.579 99
12. Massa Sauber-Petronas (B) 1:17.125 47