The first test day of the 2010 season and for the Williams team it was their first run with the new FW32 at the Valencia Circuit. The opening day of testing would see the team focus on  initial systems, performance and reliability checks with the FW32.

The day would see few significant issues aside from a throttle software problem. Rubens Barrichello was behind the wheel for the day and will also complete the second day. Barrichello's fastest lap, 1m:14.449, was almost two full seconds off the quickest time of the day a 1m:12.574.

Sam Michael, Technical Director, Williams F1:
"It was a productive first day testing, with the car completing 75 laps in total. Considering everything is new, in particular the Cosworth engine installation, it was good to get through the day without any major problems. We did have a minor software issue with the throttle control towards the end of the session, but that is easily sorted out for tomorrow. We are well underway with set-up work now and tuning the FW32 around the new Bridgestone tyres."

Rubens Barrichello:
"I enjoyed today, it was like a first day at school! You can’t predict anything from
the times today; and probably won’t be able to for the remainder of the tests because of the fuel loads people will run with such big tanks. It probably won’t be until Bahrain qualifying that we will see where everyone is. We are working on improving the balance of the car, but it’s running reliably, despite the small issue with the throttle. As everything is new, it was a good day.