Michael Schumacher will look to rebound from his first Formula One failure of 2004 and from a poor practice day, in qualifying for the European Grand Prix.
The German crashed out at Monaco last week and his preparations for Sunday's race at the Nurburgring were hit by a hydraulic problem on Friday.
Ferrari's technical chief Ross Brawn said the situation was far from ideal.
"It will make the tyre choice more difficult because Michael didn't get a
chance to try both tyres," he said.
Jarno Trulli, who ended Schumacher's winning run in Monaco last Sunday, was happy with his preparations after being fifth-quickest in second practice.
"It was a standard opening day - our car was designed to help us choose tyres and begin the car set-up programme.
"The car was lacking some grip in the cold conditions. However, we still seem quite competitive."
The top of the timing sheets had an unusual look about them yesterday, with first Anthony Davidson setting the quickest time and then Kimi Raikkonen.