Massa (left) has delivered Todt two wins so far this season

Felipe Massa gave Ferrari their third win from four races in Spain on Sunday, but McLaren lead both the drivers' and constructors' championships.

Massa had gearbox and engine problems in Australia and Kimi Raikkonen retired in Spain with an electrical fault.

"Reliability is one of the ingredients for winning the championship and twice it has been missing," said Todt.

"Pole, victory and fastest lap for the second consecutive race weekend - Felipe put in a flawless performance.

"He was really great in a great Ferrari car. In the second part of the race, he drove impeccably to control the situation and bring home a wonderful win.

If you only finish the race with one car then it's a concern Felipe Massa

"But we had Kimi's retirement because of a problem in the wiring to the alternator.

"So despite three wins and four pole positions, we are back to a following role in both classifications because of the competitiveness of our main rivals.

"Right now this season is very hard to predict. There is still a long way to go and much work to do to reach the objectives we have set ourselves. But we know what is required."

Lewis Hamilton leads the drivers' standings with 30 points - two more than team-mate Fernando Alonso, three more than Massa and eight more than Raikkonen - while McLaren have a nine-point cushion over Ferrari in the constructors' standings.

606: DEBATE Should Ferrari be worried?

The finishing record of the two teams is the reverse of the last few seasons, in which Ferrari became renowned for setting new standards in reliability and McLaren were unable to match them.

Poor McLaren reliability in 2005 blunted Raikkonen's hopes of overhauling Renault's Fernando Alonso in the title race.

The Finn left McLaren to join Ferrari this year partly because he had become frustrated by his former team's inability to make their cars reliable.

And Massa expressed his worries when he said: "If you only finish the race with one car then it's a concern.

"We need to make everything right if we are to finish the race with both cars.

"It's important both cars are consistent in the championship, so we need to keep improving because both McLarens are finishing every race."