Massa hopeful of improvement for Spain

The Italian squad have won two of the first three races of the year, but are behind rivals McLaren in the constructors' championship, despite the F2007 being widely considered as the car to beat at the moment.

"Looking at the last two races, it was clear that Malaysia did not go well for us, but in Bahrain we had an excellent race pace and now we need to concentrate on finding some improvements in the car, looking specifically at different phases of the race weekend, like qualifying and the race itself," said Massa on Ferrari's website.

"We have been analysing everything to try and improve for Spain, even if the last race was quite good for us. This is a Ferrari habit and it's a good one. After three races, this is a key moment in the championship, with the top runners all so close in the points.

"It is very tight, which makes it even more important to work even harder to improve every single little detail on the car."

The Brazilian is fourth in the standings following his win in Bahrain, five points behind Fernando Alonso, Lewis Hamilton and Kimi Raikkonen.

Massa, spending time in Brazil to celebrate his 26th birthday, will join his team at Barcelona next week, when Formula One will return to action for three days of testing ahead of the Spanish Grand Prix.

"The emphasis in testing has changed a lot this year, as in the past so much of our time was taken up with tyre testing," he added.

"Actually, at the moment, tyre testing is still one of our main areas of work, but there are other areas of the car where we can improve. But it does mean that we are not concentrating on tyres quite as much as usual."