David Coulthard grabbed second place for McLaren, ahead of Jarno Trulli and Fernando Alonso in the two Renaults.
Kimi Raikkonen says his McLaren needs to be more powerful as well as more reliable if he is to win the championship this season.
Finland's Nico Rosberg, the 17-year-old son of 1982 world champion Keke Rosberg, became the youngest driver ever to take part in Formula One testing on Tuesday, the BMW-Williams team said.