Antonelli improves again with a 1m07.134s effort. Front suspension work is taking place on Russell's car.
Highlighting Aston Martin's problems, Alonso is only 0.336s clear of the 107% cutoff.
With 20 minutes remaining, the top 10 is:
Antonelli improves again with a 1m07.134s effort. Front suspension work is taking place on Russell's car.
Highlighting Aston Martin's problems, Alonso is only 0.336s clear of the 107% cutoff.
Here comes Antonelli for a second simulation. Norris moves up to P3 with his latest effor, 0.148 shy of the benchmark.
At the foot of the order, no surprises, it's Aston Martin. Stroll and Alonso are not even in the same postcode as the next team.
Antonelli has completed only one qualifying simulation. Russell completes his third, and still falls 0.017s off his Mercedes team-mate.
Enter Leclerc! The second Ferrari driver has had a stinker of a time lately, but goes P2. Another car in the pole battle? Yes please!
And now Russell goes P2 for a Mercedes 1-2. He's 0.173s back on Antonelli, but this looks like we could be set for an incredible qualifying session later on.
Hamilton now improves to P3, putting Ferrari in the mix.
Hold on though, here's Antonelli with a 1m07.533s, putting him to the top, as Verstappen shows pace with Red Bull for the first time to go second!
Oh wow! Piastri goes 0.049s off Norris and makes it a McLaren 1-2 in the early stages!
Exactly 0.5s off the pace for Russell in P3. That's not brilliant! Antonelli now heads out.
Only Verstappen and Antonelli are yet to head out, with Piastri just now exiting the garage.
Hamilton goes second, three tenths back.
A busy track of 15 drivers now, with Norris setting a strong pace, and he goes to the top, with a 1m07.832s. We said the times would fall!
This is not what Audi or Alpine would have wanted to see, as Hadjar goes faster than both while on the hard tyres. A 1m09.230s is the early benchmark, but that will come down by a significant amount in no time.
Hulkenberg and Hadjar make their ways out now. Hard tyres for Red Bull, while Colapinto and Audi waste no time and go straight onto the soft rubber.
Perez improves to a 1m10.944s, as Colapinto joins what had previously felt like an exclusive test session.
Now with four laps in the can, Perez is on a very, very slow lap. You can only hope that there isn't a problem, as he's taken 25s longer to complete the first two sectors than it did for him to complete an entire flying lap.
All appears to ok however, as he winds it up and begins a fresh push effort.
Having made it around two laps, Perez has already gone further than he managed in FP2. Success?
Final practice is underway, and out comes Perez immediately. Cadillac endured a dreadful time of it yesterday, with significant problems on both cars.
The music has played, the timing screens are live, and it's time to get going for FP3!
With less than 15 minutes before FP3 gets underway, can anyone topple Antonelli this weekend? Red Bull brought a significant package that it believes is working as expected, but comments from drivers Verstappen and Hadjar would have you believing otherwise.
Ferrari is an unknown with its new engine, and McLaren look strong.
It'll be tough, but the threats are definitely lining up to take on the Italian!
Further on ADUO, with the Red Bull engine found to be the best on the grid, team boss Laurent Mekies fears "large implications" if it is unable to develop its product.
The team is also attempting to convince the FIA that it is wrong with its findings, and believes that no data backs up what they have been told.

The topic of the weekend so far has once again been ADUO, the system by which the FIA decides which manufacturer has the best power unit, and who is allowed to make upgrades.
Predicting it would not be the benchmark, Ferrari took a calculated gamble by proceeding with developments, which it has brought to the track this weekend.

A couple of parish notices from the evening to bring you, as Audi and Mercedes both breached the curfew. On both counts Crash.net understands that this was just to complete pre-planned work, and was not to fit new parts or firefight problems.
As we mentioned, Antonelli led the way on Friday, but the picture was muddied slightly as Russell failed to get a clean qualifying simulation effort in.
You can catch up on all the events of FP2 here...

Good morning and welcome to the Red Bull Ring for qualifying day at the Austrian Grand Prix.
The sun continues to beat down on the track, which saw Kimi Antonelli set the pace in both Friday sessions.
McLaren looked like the most likely team to pose a threat across FP1 and FP2, but don't discount Ferrari, with the team looking similarly off the pace in Barcelona before turning it around to take a memorable victory with Lewis Hamilton on the Sunday!