Blustery conditions all day made running conditions quite difficult, but Frentzen posted the 2nd fastest lap time of twelve drivers with 1:21.29, and ran the EJ11 chassis 05 for the first time, completing 86 trouble free laps.

The team concentrated on chassis set-up for the Spanish Grand Prix which included engine and software development and tyre testing and evaluation for Bridgestone.
Heinz-Harald was happy withe the progress made, despite the difficult conditions, "This was a true day of a battle at Barcelona. Nearly all the teams have been there, some of them, however, only with last year’s cars. I did 86 laps with our current car, the EJ11.
"Primarily, I’ve been concentrating on tyre tests. And there was something else to be tested: a traction control. Just to avoid any misunderstandings: we did that, of course, in preparation for the Spanish Grand Prix on April 29."