As Friday’s practice sessions came to a close, Williams driver Felipe Massa has admitted that there is still work to be done ahead of Sunday’s Spanish Grand Prix.
The Brazilian explained that they did not gather all the data they wanted during FP1 and FP2.
"I think it was not a fantastic Friday for us, trying to understand the tyres, trying to understand the car," Massa said.
"I also made a mistake on my best lap with the new soft tyres, I went completely off on the outside of the track and I couldn’t do my best lap which is the lap. After that you get minimum 0.5-0.6s slower, so I did it on my second lap.
"So not so happy for the Friday compared to Russia for example but there's a lot to work on for tomorrow and a lot to work on trying to make the car more competitive."
Despite having a disappointing Friday, the former Ferrari man is confident that they can challenge Red Bull throughout the weekend and maybe even snatch a podium.
"I expect to be competitive. I expect to be maybe in a position to fight with Red Bull," he continued.
"We know it is not easy to have a good car here on this track but we will try."