Valtteri Bottas believes that although Williams has failed to make a big enough step forwards compared to its closest Formula 1 rivals in 2015.
Bottas starts his 50th grand prix in Singapore this weekend having made his debut at the beginning of 2013, but is yet to break through and score a maiden grand prix victory.
After finishing fourth in last year’s Formula 1 drivers’ championship, Bottas had been hoping to build on this in 2015 and fight at the very front of the field.
However, he has scored just one podium finish so far this season, compared to four that he had by this point in 2014.
“I have to say I’m not really that pleased for the results,” Bottas admitted. “Of course we aim to make a step forward. I think we’ve improved from last year but, compared to others, not really.
“So, as a team, I think everyone in the team is expecting more and we are aiming to do better in the future and obviously I’m staying with the team so it’s very nice to start building from this because I still think we’re not yet at a peak and we can definitely do better.
“From my side also, it’s been a very mixed season. A lot of things have not been going to my side, so unlucky races, unlucky results. That’s how it is sometimes. Always need to look forward.”
Bottas called on Williams to work on ironing out some mistakes that have blighted its efforts in 2015, but is sure that these issues will quickly be resolved.
“I think as a team we really need to improve in all areas like we’ve seen we’ve had quite a few issues still with pitstops and some mistakes from us, as a team,” Bottas said.
“We’re still just getting stronger in all areas. Unfortunately, sometimes the way to improve is to do that mistake and then learn from it. I’m sure that soon there will be no more mistakes we can do.
“We can always just make sure we learn from those and improve. Like I said before, I think we definitely can be stronger than this year.”