Jenson Button reckons McLaren's major upgrade package for the Austrian Grand Prix has improved its Formula 1 car, but doubts it is enough to put it in podium contention.
Button was fifth fastest in first free practice on Friday, just half a second shy of the pacesetting Mercedes of Nico Rosberg, but slipped back to seventh in the afternoon session when drivers set their quickest times on Pirelli's super-soft tyre.
McLaren brought a new front wing, floor and brake ducts to the Red Bull Ring.
Button said tests of the parts had been positive, but had not produced enough of an improvement to dramatically change McLaren's fortunes.
"We had a couple of good tests," Button confirmed.
"This morning it was about getting aero data with the new parts and it was alright.
"This afternoon we did more set-up work. It was a bit windy out there, so it was a bit tricky.
"We're still struggling on the super-soft tyre with graining at the rear, but the prime tyres seem good on both shorter runs and longer runs, so it seems OK, but we won't really know until tomorrow.
"Everyone has something here; a couple of cars look quicker than we expected - especially the Williams and the Ferrari - and then the Force India doesn't look as quick as we expected, so we'll see what happens when qualifying comes.
"We want to improve the whole time, but it's not as easy as magic out of thin air, so we're all working hard.
"We're not going to suddenly be on the podium here - we're not quick enough for that."