Standings after 15 minutes
- Norris
- Verstappen
- Leclerc
- Hamilton
- Antonelli
- Piastri
- Bearman
- Sains
- Lawson
- Ocon
- Russell
- Hadjar
- Albon
- Hulkenberg
- Gasly
- Colapinto
- Linblad
- Perez
- Bortoleto
- Bottas
Standings after 15 minutes
Odd message from Pierre Gasly over the radio:
"It smells very strange in the car."
Norris crosses the line with a 1m30.688s from Verstappen and Piastri.
Everyone is on track apart from the Aston's at this stage. All of the mechanics have insulated gloves on just now, so that's not good.
Leclerc takes the updated Ferrari to the top of the pile again with a 1m31.874s.
Lewis Hamilton has just shown how little grip there is just now on the hard tyres. He had a big slide into Turn 11.
Williams will be ones to watch this weekend, as it looks to make a step from a disappointing start to the season.
Reigning champion and a previous Miami winner Lando Norris is now top in the McLaren on a 1m31.941s.
McLaren has a lot of new parts on its car for this weekend.
Lewis Hamilton has gone top early on with a 1m32.564s.
We've just had our first look at the Audi on track. With everything that's gone, it's easy to forget that Allan McNish, ex-F1 driver and Le Mans legend, has taken on a new senior role in the wake of Jonathan Wheatley's departure.
McNish is on the pitwall this weekend.
It's absolutely scorching out there. Air temp is up at 30 degrees Celsius. Track temp is at 54C already.
Carlos Sains and Charles Leclerc are the first on track.
Pitlane has gone green.
FP1 at the Formula 1 Miami Grand Prix is underway.
Charles Leclerc also has a fresh lid for this weekend's Miami GP.
Five minutes till pitlane opens.
Ferrari headlines the upgrades F1 teams have brought to the Miami Grand Prix.

15 minutes until FP1 goes green.
It's lovely ahead of FP1, but there are threats of thunderstorms this weekend, which could lead to some schedule headaches.
Read more ⬇️

Just half an hour until cars are on track for FP1.
Aston Martin's start to the season has been... not great, to put it mildly.
Over the break, Honda was able to implement some countermeasures for the vibration issues it's been suffering.
But Aston has downplayed any major step forward in Miami.

There's a considerable American presence on the grid this year in Miami.
As mentioned, we have Cadillac. There's also Haas and, of course, Ford's return to its homeland as an engine partner with Red Bull.
The search for the next US F1 driver goes on, but Colton Herta will have the crowd's support this weekend in F2.
Though we're all excited for F1's return, let's not forget that today is one tinged with sadness, as we remember the passing of Ayrton Senna on this day in 1994.

Cadillac enters its first home grand prix as an F1 manufacturer. Sergio Perez has a nice, one-off helmet to mark the occasion.
Just about every team has brought a significant set of upgrades to the Miami Grand Prix.
McLaren says it has a 'completely new' car, as it hopes to put on a repeat of its recent Miami success and close the competitive gap to Mercedes.
But Lando Norris has warned against getting too excited about the updates.

This is, of course, a sprint weekend. So, we'll have only one practice session before we get into the meaty stuff.
Sprint qualifying is up later this evening.
The Formula 2 field has already been out on track today at Miami. Conditions look good, circuit looks in nice shape ahead of FP1.