Valtteri Bottas says he is fully confident the upgrades Williams are bringing to the Austrian Grand Prix could well see them in the leading fight once again, if not quite challenging Mercedes for victory.

Fresh from his first podium of the season in Canada, Bottas comes to the Red Bull Ring looking to lead a repeat of Williams' surprise front row lockout in qualifying - and subsequent third and fourth in the race - from last season.

Getting his hands on the revised FW37 this weekend, with its updated aero package, Bottas believes the upgrades alone will see Williams challenging Ferrari.

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"We had our strongest weekend of last season. Last year's' car suited this track really well, I think this year it should be the same thing. Obviously Mercedes is a little bit more ahead this season than last year, so being 1-2 in qualifying is trickier, but you never know.

"We have some updates on the car that we will try on Friday and then we will see how strong we are. From the last race and getting the first podium of the season motivates everyone, so we know we can again do a good result. It is looking good for the weekend.

"I reckon if all the updates work as expected, we should be really close with Ferrari and that is what we are hoping for."

Indeed, though Williams hasn't started the 2015 season in the way it ended it by being Mercedes' closest rival on track, Bottas believes the Red Bull Ring will still suit this year's car.

"There are a couple of high speed corners here so you need a car that is good in high speed corners, which hasn't been a problem for us this season," he said. "It has been more the slow speed corners, so it should be alright."