Williams is faster than it has been able to show in recent races and still stands a chance of scoring more top results later in the season, according to its reserve driver Valtteri Bottas.
The Finn is driving Bruno Senna's Williams in most Friday morning practice sessions this season. Although Williams is only seventh in the constructors' championship and has not taken any top-six finishes since Pastor Maldonado's shock Spanish Grand Prix win, Bottas is adamant that its car is getting better and better.
"We are definitely improving and we are understanding much more about the car since the beginning of the year," he said. "The direction is right all the time. Of course other teams are improving as well, but if we can up the good work and if everyone keeps pushing I think we can still get some proper points."
Bottas is adamant that it is bad luck, not a lack of pace, that has kept Williams off the podium since Spain.
"I think the results we've got in the last few weekends, we've been really unlucky," he said. "I think we should've had more points, there's been a lot of bad luck. The car has more pace than it's been showing."