'Practice sessions more valuable than ever before right now'published at 01:46 GMT 7 March
01:46 GMT 7 March
Marc Priestley Former F1 mechanic on BBC Radio 5 Sports Extra
These practice sessions are so valuable, more than ever before right now because everything is so new.
You're going to hear the words energy management, harvesting and deployment a lot more this year because of the way the new cars are constructed and how the power is delivered.
It's about a 50-50 split now between the electric motor and battery, and the internal combustion engine.
There's a huge amount of strategy behind how you harvest the energy and where you do it because you've got a battery now that is almost going to be empty and refilled a couple of time during the course of a single lap.
Straight mode between T6-9 stayspublished at 01:42 GMT 7 March
01:42 GMT 7 March
The FIA has already busy in Melbourne in today.
Earlier on, the straight-line mode between Turns Six and Nine was removed for safety reasons after some concerns were raised, however, there was a big push-back from teams and drivers, as this would've had an impact on car set-up at such short notice.
So, the decision has now been scrapped and it's as you were for third practice and qualifying.
In a statement, the FIA said: "Following feedback in last hour from teams and drivers, and additional analysis contributed by teams, decision to remove Straight Mode zone #4 is rescinded. Further evaluation during and after FP3."
The narrative of the weekend so far has been about Aston Martin's plight at the back of the field as much as the fight at the front, following the biggest regulation change in the sport's history.
Team principal Adrian Newey has laid bare the team's struggles across two compelling news conferences, and revealed as well that star driver Fernando Alonso is in a "hard mental place" as a result of engine partner Honda's lack of performance and reliability.
Newey said the current problems are rooted in vibrations from the engine affecting the batteries of the hybrid system. There are only two of those left for the rest of the weekend in Melbourne.
He also revealed thevibrations are risking permanent nerve damage for their drivers within 25 laps of running.
"Fernando [Alonso] is of the feeling that he can't do more than 25 laps consecutively before he will risk permanent nerve damage to his hands," he said.
"Lance [Stroll] is of the opinion that he can't do more than 15 laps before that threshold."
Listen to live commentarypublished at 01:28 GMT 7 March
01:28 GMT 7 March
BBC Radio 5 Sports Extra
Jennie Gow, Harry Benjamin, F1 correspondent Andrew Benson and former McLaren mechanic Marc Priestley are in position and ready to take us through this third practice session.
You can tune in by clicking the 'listen live' tab at the top of this page, via the BBC Sounds app or by asking your smart speaker to "play BBC Radio 5 Sports Extra".
What's new in F1 2026?published at 01:21 GMT 7 March
01:21 GMT 7 March
Cars - shorter, lighter, nimbler and more environmentally friendly
Engines - now a near 50-50 split between electric and internal combustion power - and use fully sustainable fuels
DRS overtaking aid gone - replaced by overtake mode, a burst of extra electrical power when a driver is within one second of the car ahead at a detection point, usually the final corner
Active aero - both the front and rear wings adjust angles to reduce drag on straights (straight mode) and increase downforce in corners (corner mode)
Recharge - cars can recover energy during braking, running the engine at high revs in corners, lifting off early and coasting at the end of straights and from not being at full throttle
Boost mode - at the push of a button anywhere on track, drivers can get maximum power from the battery to aid with an attack or defense
The competitive picture is still unclear after a day on which many of the teams and drivers admitted they were struggling to work out the optimum use of energy with this year's new engines. Management of the hybrid system is critical with the power split about 50-50 between internal combustion engine and electrical power.
World champion Lando Norris, seventh fastest in his McLaren ahead of the impressive 18-year-old British rookie Arvid Lindblad in the Racing Bull, was affected by a gearbox problem in the first session.
Mercedes, though, set highly impressive times on their race-distance runs late in the session that seemed to underline their position as pre-season favourites.
Ferrari, also fancied by many coming into the season, spent much of the day at the top of the times, only to be usurped by McLaren and Mercedes.