Valtteri Bottas believes he could benefit from developments intended for next season as Williams switch "some" focus to 2016.
This season's championship has failed to yield the impressive results of last season as Williams have fallen behind Ferrari in the battle to be best of the rest.
While in 2014 Bottas managed six podium finishes, this year he has just one to his name with five races remaining.
The Finn, though, reckons his chances over top-three results are by no means over as developments for next season could boost Williams' performance this year already.
He wrote in his post-Japanese GP blog: "As we get to this stage of the season some of the focus is switching to next year's car and for sure we've been developing the FW38 for a long time.
"That's the target until the end of the season – to look ahead and put us in the best place for 2016 – but if we can also find something that benefits this year's car then we'll use it as we would like to get more podiums before the season finishes. And if we can get closer to Ferrari then all the better.
"In fact, most of the tracks we're still going to this year should be good for us, so that's very positive. I believe the upgrades we introduced for Singapore gave us more downforce and worked well, so they definitively worked here [Suzuka] too.
"We ran the same bits on the car at Suzuka and were competitive but, obviously, Red Bull and Ferrari have made improvements too and they'll be very difficult to beat in the coming races."
Looking ahead to the next race, the Russian Grand Prix, the 26-year-old is confident Williams can challenge near the front having achieved a P3 last season.
"We were very competitive in Sochi last year – I nearly got pole position – so I'm looking forward to the next race as it's also a fun track," he added.