Williams Martini
Williams driver Felipe Massa reckons that the FW36 is lacking downforce ahead of this weekend's Malaysian Grand Prix.
Williams has demonstrated good pace in 2014 but Massa revealed in Malaysia that upgrades were not ready in time for the second round of the year.
"We are missing a little bit or rear downforce and we are working on that to improve," said the Brazilian racer.
"Pieces were not ready for this race, so we have the same car, more or less, as we had for Australia. This is a different track so we need to see how the car behaves here, but we are definitely working 100% in the factory to improve. There are some areas we need to improve and I'm sure when we fix them the car will grow.
"The car will show a better balance definitely and I think that will be positive for us as well.
"From now until Barcelona you will see many different results and different improvements from other teams and for us as well. We are working to have a big package for China and we will see how it happens race-to-race and we hope we can be competitive like we were in Australia."
Massa was eliminated on the first lap in Australia by Kamui Kobayashi, while team-mate Valtteri Bottas finished fifth despite clipping the wall and having to pit for repairs.
Massa reckons that without their problems, Williams would have finished on the podium.
"If I didn't have the problem in the first corner, it would have been possible to finish with both cars in the podium, but even looking at what happened to me, it was possible to see Valtteri on the podium with the race he was doing," he said.
"He had contact with the wall and lost his tyre, but he showed great potential and performance and that's positive for the next races and this one as well. I hope this is how our car is and not just specific to that track, this is a completely different track and we need to see how the car behaves here, but I hope we can see a competitive car again."
