Ferrari's Leclerc fastest on final day of pre-season testing in Bahrain
McLaren's Norris in second, with Red Bull's Verstappen third
Aston Martin finished testing early after completing only six laps on last day
First race in Melbourne takes place from 6-8 March
New technical regulations biggest change in F1 for years
Max Verstappen is in the Red Bull this afternoon.
The four-time world champion is out on the track with a set of medium tyres bolted on.
Racing Bulls' Arvid Lindblad does a practice start at the end of the pit lane before he joins the track.
The first car heads out on to the circuit in Bahrain.
It is the Haas of Oliver Bearman. He does two laps before heading back to the pits.
Also joining him is Lance Stroll, eager to get out after missing almost all of the morning session.
The clock has started its countdown but no one is ready to head out onto the circuit, just yet.
The screens are up in the McLaren garage. Work is being done to the car before Lando Norris steps in for the final four hours of testing.
Afternoon session:
Lando Norris (McLaren)
George Russell (Mercedes)
Max Verstappen (Red Bull)
Oliver Bearman (Haas)
Gabriel Bortoleto (Audi)
Valtteri Bottas (Cadillac)
All day:
Charles Leclerc (Ferrari)
Carlos Sainz (Williams)
Arvid Lindblad (Racing Bulls)
Lance Stroll (Aston Martin)
Pierre Gasly (Alpine)
Tasnim Chowdhury
BBC Sport journalist
Image source, Getty ImagesHello all!
There is just one session left of testing now, before the season begins in Australia.
This is the last opportunity to fine tune the cars and gain data on the new regulations.
As a reminder, we are missing five drivers from testing - Lewis Hamilton, Fernando Alonso, Alex Albon, Liam Lawson and Franco Colapinto finished their duties yesterday.
So, who are the drivers taking part in the final four hours of testing?
That's all for this morning guys! Go grab some lunch and join us for the afternoon session starting at 12:00 GMT.
Charles Leclerc was the top of the times in his Ferrari, with Mercedes' Kimi Antonelli in second and McLaren's Oscar Piastri rounding out the top three.
Aston Martin's Lance Stroll did just two laps, while Cadillac had a more positive session with Sergio Perez completing 61 laps.
See you shortly!
The drivers are just practicing some race starts and going through the procedures which is just as important for the teams to make sure everything is running smoothy.
Oscar Piastri (McLaren) - 66
Kimi Antonelli (Mercedes) - 49
Isack Hadjar (Red Bull) - 59
Charles Leclerc (Ferrari) - 80
Carlos Sainz (Williams) - 66
Arvid Lindblad (Racing Bulls) - 77
Lance Stroll (Aston Martin) - 2
Pierre Gasly (Alpine) - 57
Esteban Ocon (Haas) - 82
Nico Hulkenberg (Audi) - 64
Sergio Perez (Cadillac) - 61
The drivers are getting their final bit of running done before the lunch break.
Charles Leclerc is still sitting at the top of the times with a 1:33.689.
The Ferrari man has completed 80 laps this session and will be back out this afternoon.
Lance Stroll is back out on track to squeeze in the last minutes of running.
Image source, Getty ImagesWell, that wasn't long at all! Lance Stroll is back in the pits after a quick installation lap in the Aston Martin.
Finally! The Aston Martin of Lance Stroll has left the garage and is making his way back on the track with just over 15 minutes remaining.
Carlos Sainz has been laying down some rubber in the Williams and has completed 66 laps, and they are just doing some practice pit stops before the lunch break now.
He will be in the cockpit for the full day, so he will be back this afternoon to collect some more data and get to grips with the new car.
The team arrived in Bahrain on the back foot and have been playing catch up ever since after they missed out on the private test in Barcelona in January because their car was not ready.
Image source, Getty Images1) Charles Leclerc (Ferrari) - 1:33.689
2) Kimi Antonelli (Mercedes) +0.227
3) Oscar Piastri (McLaren) +0.663
4) Esteban Ocon (Haas) +0.805
5) Isack Hadjar (Red Bull) +0.822
Image source, Getty ImagesThere has been a lot of talk about the start procedure under these 2026 regulations, so today will be the final chance the FIA has to make any tweaks around the race start before the opener in Melbourne in two weeks' time.
With the balance of the new power unit a near 50-50 split between electric and combustion power - and the MGU-H removed - drivers must now hold high revs in advance to build pressure for a clean getaway.
There have been some concerns we could see a chaotic start to the Australian Grand Prix next month, but yesterday's tests went fairly smoothly. So, 10 minutes before the end of each session, this is what is going to happen:
Aston Martin's Lance Stroll is yet to appear on the track with 30 minutes to go. The Canadian is running all day, so at least he will hopefully get some running in during the four-hour afternoon session.
The team have not had the week they would have wanted after Stroll spun and beached the car in the gravel on day one of testing, and team-mate Fernando Alonso's full day session on day two was cut short after an issue with the power unit.
Kimi Antonelli had to pull over on the track which caused a red flag earlier on. The Italian teenager grabbed a lift back to the Mercedes garage, but kept his helmet on throughout, despite the hot conditions.
We've not seen any sign of him coming back out yet, so I wonder if the team will be able to fix the issue before the lunch break.
If not, that will be day done as his team-mate George Russell is taking over for the afternoon session.
1) Charles Leclerc (Ferrari) - 1:33.689
2) Kimi Antonelli (Mercedes) +0.227
3) Oscar Piastri (McLaren) +0.663
4) Esteban Ocon (Haas) +0.805
5) Isack Hadjar (Red Bull) +0.822
Audi's Nico Hulkenberg has just set a personal best this session, clocking a time of 1:36.019 and sits in ninth.
Audi is entering Formula 1 for the first time this season, having taken over the Swiss-based Sauber team, and principal Jonathan Wheatley is aiming high - really high.
"We want to make Audi the most successful F1 team in history," said Wheatley.
Image source, Getty ImagesSelect the 'Get Involved' button to have your say
James, Woodbridge: I always believed the big manufacturers entered F1 to accelerate development of their road cars. The emphasis on battery power suggests the reverse is now true and F1 is being reduced to a marketing forum instead of cutting edge racing. No wonder the drivers are disappointed.
David, Essex: It seems like Aston Martin are experiencing the same sort of problems with Honda that McLaren had when they went with Honda at the start of a new engine era.
There were six rookies on the grid last season, but Arvid Lindblad is the only new face in the paddock that has been quietly going about business in his Racing Bulls around the Bahrain International Circuit.
The 18-year-old has completed 62 laps so far and is doing the full day of running. He's taking a breather and has been wheeled back into the garage.
Lindblad, who has a Swedish father and a mother of Indian descent, finished his Formula 2 campaign with Campos Racing in sixth place and will be team-mate to New Zealander Liam Lawson.
Image source, Getty Images