Lewis Hamilton earned his first Grand Prix victory for Ferrari in Barcelona last time around which means he is second in the drivers' standings with 115 points.
Mercedes' Kimi Antonelli is still in top spot but his DNF almost two weeks ago means there is only 41 points between him and the seven-time world champion.
Antonelli's team-mate George Russell is nine points behind Hamilton.
Austrian GP declared heat-hazard race amid heatwavepublished at 14:33 BST 27 June
14:33 BST 27 June
Image source, Getty Images
A reminder that this weekend's Austrian Grand Prix has been declared a heat-hazard race by Formula 1's governing body the FIA.
The designation comes at any event where the temperature is forecast to exceed 31C at any time the cars are on track.
The ruling means drivers can use a cooling kit that flows cooled liquid, such as glycol, through a system of pipes in a fireproof top worn under their overalls.
The cooling kit is not mandatory but any driver who chooses not to use it has to carry 5kg of ballast in their car to ensure he does not have a competitive advantage.
Temperatures are expected to peak at 33C today. Hot hot!
Temperatures are still very high with the Europe-wide heatwave still in full flow.
Mercedes' George Russell went fastest late into third practice earlier, topping the charts over his team-mate Kimi Antonelli who has looked impressive all weekend so far.
But can he make it two pole positions in a row and put the fight to Antonelli and the Ferrari of Lewis Hamilton?
George Russell prevented Mercedes team-mate Kimi Antonelli from achieving a clean sweep of practice sessions at the Austrian Grand Prix with the fastest time in the final session as the Formula 1 teams prepared for qualifying.
Russell led the Italian by 0.038 seconds, with Ferrari’s Lewis Hamilton 0.115secs off the pace in third.
McLaren’s Oscar Piastri and Lando Norris were fourth and fifth, separated by 0.015secs and just over 0.2secs off the pace.
Max Verstappen in the upgraded Red Bull was sixth fastest, split from team-mate Isack Hadjar by the second Ferrari of Charles Leclerc.
An uneventful session suggested a tight fight for pole position later on Saturday but the Mercedes drivers are still favourite to edge out Hamilton.
The signs for Ferrari’s upgraded engine are positive so far on this power-sensitive circuit, but judgement remains out on Red Bull’s chassis upgrade.
Sam Bird Formula E driver on BBC Radio 5 Sports Extra 3
It looks like Charles Leclerc is struggling under braking in his Ferrari and it's something that's plagued him in his past couple of grands prix.
Lewis now has has a few good races where he's been clearly the fastest of the two Ferrari drivers and he's looked comfortable with the car beneath him.