Postpublished at 06:13 British Summer Time 25 March 2018
Everyone is in position.
All that's left is for those red lights to go out.
Summary
Vettel leapfrogs Hamilton to win during safety car
Mercedes say miscalculation caused confusion
Both Haas cars suffer identical pitstop wheel mistake after running well
Sirotkin, Ericsson, Gasly, Magnussen, Grosjean out
Get involved #bbcf1
Postpublished at 06:13 British Summer Time 25 March 2018
Postpublished at 06:12 British Summer Time 25 March 2018
Image source, F1.comHuge roar as Daniel Ricciardo passes the stands on his way round the formation lap.
The Australian is bidding to be the first winner of his home Formula 1 race. He has has it all to do from eighth on the grid.
Postpublished at 06:11 British Summer Time 25 March 2018
Into the car and away they go.
It's time!
Image source, Jennie GowThe top 10 on the gridpublished at 06:10 British Summer Time 25 March 2018
Image source, F1.comPostpublished at 06:08 British Summer Time 25 March 2018
BBC Radio 5 liveJennie Gow grabs a quick picture on the grid before the cars rumble off for the formation lap.
You can listen to full race commentary on BBC Radio 5 live right now.
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End of twitter postPostpublished at 06:06 British Summer Time 25 March 2018
Image source, RenaultThe ground is still shaking from the Australian Air Force flyover.
Incredible noise.
'I have butterflies'published at 06:04 British Summer Time 25 March 2018
BBC Radio 5 liveMercedes boss Toto Wolff has given us a pre-race update on pole-sitter Lewis Hamilton.
"He's good," he tells Jennie Gow. "He's in good spirits and optimistic for a solid race."
And as for how he is feeling about the race: "I have some butterflies which is really good and I am looking to the race with curiosity."
Ten minutes to go...published at 06:01 British Summer Time 25 March 2018
Remember, something different for 2018 - races start at ten past the hour.
Time to get one final cuppa before lights out.
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End of twitter postAustralian GP in numberspublished at 06:00 British Summer Time 25 March 2018
Laps: 58
Circuit length: 5.303 Km
Race distance: 307.574 Km
2017 winner: Sebastian Vettel
Image source, .Postpublished at 05:59 British Summer Time 25 March 2018
A proud and exciting moment for those grid kids as they stand in front of the drivers for the national anthem.
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End of twitter postWelcome to the grid kidspublished at 05:56 British Summer Time 25 March 2018
Jennie Gow
BBC Radio 5 live pit-lane reporterNo grid girls down here for the first time - instead they have grid kids, brightly dressed in fluorescent green outfits and green baseball caps.
Postpublished at 05:55 British Summer Time 25 March 2018
The drivers are making their way down towards the front of the grid because it's national anthem time.
Predict the top threepublished at 05:55 British Summer Time 25 March 2018
Image source, .A reminder again that there is still time to get your predictions in for this race.
Tell us who you think will finish in the top three here.
Latest forecast - windypublished at 05:52 British Summer Time 25 March 2018
Ian FergussonAir temp 24C, track 40C. Dry conditions (chance of showers 20%, rising after race). The brisk W-WNW wind will be a feature: giving a headwind into Turn 1; a tailwind e.g. Turns 11-12.
Postpublished at 05:52 British Summer Time 25 March 2018
Always good to see drivers take time to pose with their fans.
Oh...
Image source, .One stopper?published at 05:51 British Summer Time 25 March 2018
Andrew Benson
BBC Sport’s chief F1 writer in MelbourneWhat’s the weather going to do? As any local in Melbourne will tell you, you never know. Rain is predicted at some point, but whether it arrives in time to affect the race remains to be seen. As for strategy, if it stays dry, it looks like a sure-fire one-stop, with the quickest way said to be starting on the ultra-soft and then switching to the soft. Some, though, will doubtless try the super-soft first - and Red Bull have to, having decided it was a strategic advantage and used it to set their times in Q2.
Not everyone thinks they were right. “We will have to analyse what is the best starting tyre,” said McLaren’s Fernando Alonso, who has free choice after qualifying out of the top 10. “But I don’t think it is going to be a day and night difference.”
Postpublished at 05:50 British Summer Time 25 March 2018
The cars are on the grid and Jennie Gow is on the hunt for drivers and celebrities to speak to.
Listen in on 5 live.
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End of twitter postGet involved #bbcf1published at 05:49 British Summer Time 25 March 2018
Reece Young: Up early for the @F1, external race. New season - let's hope for a close race and plenty of battles.
Leslie Cliff: Nerves.. Good evening from Jamaica.
Postpublished at 05:49 British Summer Time 25 March 2018
Jennie Gow has been out and about with her Polaroid and captured these eager fans entering the circuit a little earlier...
Image source, .A crazy race?published at 05:44 British Summer Time 25 March 2018
Jennie Gow
BBC Radio 5 live pit-lane reporterThis can be a crazy race. We know what Melbourne can be like - four seasons in one day. Rain isn't predicted at the moment but you never know what can happen.