Barrichello has picked up eight points in three races this season

The F2005 made its debut at the last race in Bahrain, but Michael Schumacher failed to finish while Barrichello had gearbox problems and finished ninth.

But after testing, Barrichello told the Gazzetta dello Sport newspaper: "This car arrived a bit late and we just had to understand it fully.

"I think that from now on we will have everything we need to finish races."

Ferrari have managed just 10 points from three Grands Prix but Barrichello expects the team to begin a revival at Imola next week.

"There is a lot of confidence for Imola," he said.

The car is undoubtedly quicker and more balanced Rubens Barrichello

Barrichello completed 86 laps in testing at the Mugello circuit while Schumacher did 139 at Ferrari's shorter Fiorano test track.

A Ferrari spokesman confirmed Schumacher had suffered a hydraulic pressure problem but said it was no cause for concern and nothing different to any other testing glitch.

"We should be really happy with the reliability," said Barrichello.

"We have done so many laps with the same engines, we are really in good shape.