Williams technical director Mike Coughlan believes the FW35 will be more competitive at this weekend's Bahrain Grand Prix.
Williams has yet to qualify higher than fifteenth this season and has failed to score points.
"It’s a high braking circuit so brake wear will be a factor, it is tough on rear tyres and it has a high ambient temperature. We feel that the current car, while not as competitive as we would like, will be more competitive in Bahrain because of these factors," said Coughlan.
While Coughlan admitted the opening three races had been underwhelming, the team has taken solace from the performances of rookie Valtteri Bottas.
Bottas has finished all three races, with a best result of 11th in Malaysia.
"It’s been disappointing not to score points in our first three races, but we can be pleased with the fact that Valtteri has managed to bring the car home in every race so far with very solid drives."
The Finn adds that the rarely used circuit will make track conditions difficult.
"The track in Bahrain isn’t used much throughout the year so can be quite green and the dusty surface means that the conditions can change quite a lot from one session to another, so it will be important to keep searching for the best grip on each lap," said Bottas.
"The tyres also tend to drop off quite a lot at this circuit so in Friday practice we need to try and find a good car setup to maximise the long run performance for the race so we can keep the tyres alive longer than others."