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Summary

  1. Bottas fastest, Rosberg sixth
  2. McLaren's Jenson Button completes just two laps before lunch
  3. ERS problem hits Red Bull of Daniel Ricciardo after 10 laps
  4. Nico Rosberg has set fastest time of winter so far and is back in Mercedes today
  5. Pastor Maldonado crashes after lunch, bringing out red flag
  6. First race is the Australian Grand Prix a fortnight today

Live Reporting

By Jamie Strickland

All times stated are UK

Get involved

Thanks and goodbye

Well it's been a busy four days but I think we now have a clearer picture of where we stand heading into the new season.

Mercedes look far and away the team to beat, with Williams and Ferrari looking the pick of the chasing pack. Special mention too for the Sauber and Force India cars, which look both reliable and quick.

Work clearly remains to be done at McLaren, but they are not the kind of team to stay down for too long.

First practice in Melbourne on 13 March is where the new season begins in earnest.

Do please join us.

Nico Rosberg's Mercedes
Getty Images

Final pre-season test, overall top six

Here's the top six times from the past four days of testing, and the tyre the lap was done on (only best time from each driver is included).

1. Nico Rosberg (Mercedes) 1:22.792 (soft)

2. Lewis Hamilton (Mercedes) 1:23.022 (soft)

3. Valtteri Bottas (Williams) 1:23.063 (super-soft)

4. Felipe Massa (Williams) 1:23.262 (super-soft)

5. Kimi Raikkonen (Ferrari) 1:23.276 (super-soft)

6. Sebastian Vettel (Ferrari) 1:23.469 (super-soft)

Testing points to only one outcome in Melbourne

Andrew Benson

Chief F1 writer

"Well, that's it. Twelve days of pre-season testing are over. By the end of the week, the cars will be on their way to Melbourne for the first race and in a fortnight's time we will know the winner of the first grand prix of the 2015 season.

"On the evidence so far, you'd have to say it would take a miracle - or some poor reliability - for it not to be either Lewis Hamilton or Nico Rosberg.

"Mercedes are the class of the field, and are very likely to start the new season as they ended the last.

"A full analysis of the lessons of pre-season testing will be on the BBC Sport website later this evening."

Final times, day four

1. Valtteri Bottas (Williams) 1:23.063 (89 laps)

2. Sebastian Vettel (Ferrari) 1:23.469 (129)

3. Felipe Nasr (Sauber) 1:24.023 (159)

4. Max Verstappen (Toro Rosso) 1:24.527 (85)

5. Daniel Ricciardo (Red Bull) 1:24.638 (72)

6. Sergio Perez (Force India) 1:25.113 (130)

7. Nico Rosberg (Mercedes) 1:25.186 (148)

8. Jenson Button (McLaren) 1:25.327 (30)

9. Pastor Maldonado (Lotus) 1:28.272 (35)

There's £4.37 I'll never see again

So Mercedes left us wondering on their super-soft pace after all. No gung-ho heroics at the end there.

Very sensible. Very Mercedes.

It also underlines why I am not an F1 team boss and never have any money.

Chequered flag

Pre-season testing 2015 is at an end. Next stop Oz.

Five minutes left

Sergio Perez, Daniel Ricciardo, Max Verstappen, Nico Rosberg and Sebastian Vettel still circulate.

Is this going to end with a whimper or a bang?

F1 journalist Dan Knutson in Barcelona

"The teams are starting to pack up anything not needed if their cars are still running. The crews have been here for a long time - nearly two weeks if you include a couple day of setting up before testing began at the Barcelona circuit."

knutson
knutson

Get involved - #bbcf1

Blackburn Lad: "If I were Mercedes I'd blitz everyone else's times on the soft and then call it a day. Leave them all wondering."

Rosberg rides again

Mercedes tweet: "@nico_rosberg isn't ready to head into the sunset just yet! Just over 30mins to go and he's maximising every one! #F1"

That's the soft tyre he has on. Still we wait for the super-softs.

Mercedes of Nico Rosberg
Mercedes

Thirty minutes remain in pre-season testing

The final throes of pre-season are upon us. Here's how we stand:

1. Valtteri Bottas (Williams) 1:23.063 (89 laps)*

2. Sebastian Vettel (Ferrari) 1:23.469 (109)

3. Felipe Nasr (Sauber) 1:24.023 (151)

4. Daniel Ricciardo (Red Bull) 1:24.638 (58)

5. Sergio Perez (Force India) 1:25.113 (120)

6. Nico Rosberg (Mercedes) 1:25.186 (132)

7. Jenson Button (McLaren) 1:25.327 (29)

8. Max Verstappen (Toro Rosso) 1:25.710 (71)

9. Pastor Maldonado (Lotus) 1:28.272 (35)*

* No more running today

Verstappen back on track

Toro Rosso tweet: "Now this is good news, Max is back! It will be good to get out for the final hour of pre-season testing #GOTOROROSSO"

Max Verstappen brought out the red flag earlier this afternoon when the STR10 sufferered an engine problem between turns 11 and 12.

Toro Rosso of Max Verstappen
Toro Rosso

Lotus admit defeat with car rebuild

Andrew Benson

Chief F1 writer

"That's it for Lotus. They have abandoned their hopes of getting the car repaired in time to go out again following Pastor Maldonado's post-lunch crash and called it a day."

Pastor Maldonado of Lotus
Getty Images

Place your bets for a Mercedes showstopper

Now I'm a long way from being a big gambler, but if a book was running on Mercedes choosing to end pre-season testing with a super-soft tyre extravaganza I would be prepared to wager my life savings on it happening.

And I'm not one to bandy £4.37 around lightly.

The world champions' fearsome W06 is yet to don the red-walled tyre this winter, even though the rubber is estimated to be 0.5-0.8secs a lap quicker. For the record, their best lap so far is a 1:22.792. So it's feasible a lap in the 1:21s could maybe - maybe - be within reach.

Surely that's how they want to sign off. I know I would.

John McCririck
BBC

Vettel on the move again

Andrew Benson

Chief F1 writer

"Ferrari have sent Vettel out again - he's now just over 20 laps into his interrupted race simulation."

Ferrari race sim hits trouble

Andrew Benson

Chief F1 writer

"Ferrari sent Sebastian Vettel out on a race simulation run earlier this afternoon, but it appears they have run into trouble - the German has not re-emerged after pitting at about what would have been the end of a first stint. We'll check and report back."

F1 journalist Dan Knutson in Barcelona

It's a pleasant, warm (18 degrees Centigrade) afternoon, but there are not that many fans in the grandstands as neither Fernando Alonso nor Carlos Sainz is testing today.

knutson
knutson

Williams' pre-season testing is over

Williams tweet: "So that's winter testing completed for us. Next stop for the guys is @ausgrandprix Well done team!"

Williams end the day with Valtteri Bottas leading the way on a 1:23.063, set this morning on the super-soft tyre. The FW37 did just 89 laps but the team have not reported any issues.

Williams pit crew
Getty Images

F1 journalist Dan Knutson in Barcelona

"Lotus's pit wall gear is all still in place, as is the pit stop gantry equipment. It does not look like the team is packing up the transporters either, so the crew must be working on getting the car repaired so Pastor Maldonado can get some more laps in before the end of the day."

Force India pass go 100 times

Another good day for Force India and the fledgling VJM08.

It has cracked 100 laps for the second day running having only first turned a wheel in anger late on Friday morning.

Sergio Perez, in the car today for the first time, sits fifth at present with a best time of 1:25.113.

Force India of Sergio Perez
Getty Images

Pictures of the day

Daniel Ricciardo
Getty Images

Red Bull's Daniel Ricciardo chats with an engineer from the cockpit of the 'camo' RB11.

Pictures of the day

Sebastian Vettel and Valtteri Bottas
Getty Images

Lovely shot here of Sebastian Vettel's Ferrari SF15-T in close quarters with the Williams FW37 of Valtteri Bottas.

Get involved - #bbcf1

Anthony Wyatt: "If that Fangio statue was near my old home the wheels would be gone."

McLaren's day getting better

McLaren tweet: "Good to be out getting some more laps on the board."

Jenson Button has done 21 laps since lunchtime, having managed just two this morning.

McLaren
McLaren

F1 journalist Dan Knutson in Barcelona

"This statue of five-time world champion Juan Manuel Fangio and his 1955 Mercedes W196 is located just outside the entrance to the paddock here at the Circuit de Catalunya."

knutson
knutson

Engine problem caused Verstappen stoppage

Toro Rosso tweet: "We've had to stop due to engine problem. Max will have to wait before hopefully going out again. Nice view meanwhile."

Toro Rosso
Toro Rosso

Times and laps update

Laps times are largely unchanged since the lunch break as longer runs and race simulations take precedence, although Jenson Button's McLaren is at least on the board now and Daniel Riccardo's Red Bull has improved after an earlier ERS problem.

Here's where were at:

1. Valtteri Bottas (Williams) 1:23.063 (76 laps)

2. Sebastian Vettel (Ferrari) 1:23.469 (66)

3. Felipe Nasr (Sauber) 1:24.023 (113)

4. Daniel Ricciardo (Red Bull) 1:24.638 (22)

5. Sergio Perez (Force India) 1:25.113 (86)

6. Nico Rosberg (Mercedes) 1:25.186 (94)

7. Jenson Button (McLaren) 1:25.994 (23)

8. Max Verstappen (Toro Rosso) 1:26.267 (68)

9. Pastor Maldonado (Lotus) 1:28.272 (35)

Button goes beyond 20 laps

Jenson Button's McLaren is getting closer to the times he managed on Friday. A 1:25.994 on the soft compound sees him into seventh, and 23 laps are now on the board.

Rosberg closes on century

Mercedes tweet: "Box, box, box is the call for @nico_rosberg! 93 laps on the board with 2hrs30mins to go... he's racking up the miles."

Rosberg
Getty Images

Sauber first to 100 laps again

Not for the first time this week it is Sauber who break the tape on a century of laps.

Felipe Nasr brings up his ton during a run on the hard Pirelli tyre. He has a best time of 1:24.023, good for third in the standings with around two and a half hours to go.

Felipe Nasr of Sauber
Getty Images

Lunchtime quiz #3 Answer

I asked you what Ronnie Peterson, Jody Scheckter, James Hunt and Gerhard Berger all have in common.

The answer is they are all 10-time grand prix winners, indeed they are the only men currently on that tally. David Harrison was quickest with the right answer.

Thanks again for playing.

Mika Hakkinen, Gerhard Berger and Michael Schumacher
Getty Images
Berger won his 10th grand prix at Hockenheim in 1997

Green flag

We're off again.

Maldonado targets top 10 in Melbourne

Andrew Benson

Chief F1 writer

"Pastor Maldonado held a media briefing at lunchtime, shortly before his unfortunate accident at Turn Four - after which he is fine, incidentally.

" Maldonado said that Lotus remained encouraged about their new car: 'For sure not as top as Mercedes but not that bad. It is a good step forward. The feeling is not too bad.'

"Asked why he and team-mate Romain Grosjean were faster in the second test than this one he said: 'We are now focused on testing different things. More focus on the race pace. Last week we were pushing a bit more than this week. If we want to go forward in qualifying we can do it.'

"As for the team's aims for Melbourne, he said: 'Let's start the season targeting the top 10 and then we'll see after that.'"

Pastor Maldonado
Getty Images

Get involved - #bbcf1

Courtland Adams: "Will Lotus ever realise that they'd most likely have more success without Crashtor Maldonado? Even without the PDVSA investment..."

Chris Brassett: "I really hope McLaren can sort out all their problems in time for the season open in Melbourne!"

Matthew Cheshire: "Think I could hear JEV and I'm 10k from the Adelaide circuit. Joys of a Ferrari V8!" [see 09:07]

Phil: "McLaren were in a similar situation in 2011 but went on to qualify & finish 2nd in The 1st race. Fingers crossed for a repeat."

Red flag

Max Verstappen's Toro Rosso has stopped out on track.

Meanwhile, 300 miles away in Monaco...

Lewis Hamilton tweets: "At the beach with Roscoe. I'm wishing you an amazing Sunday. #Monaco #bestdog #blessed"

Hamilton completed his pre-season commitments for Mercedes yesterday.

Lewis Hamilton
Lewis Hamilton/Twitter

Lotus with decision to make after Maldonado crash

Lotus tweet: "A bit of work in the garage after an off this afternoon. Currently assessing whether we'll return to the track."

Red Bull and Ricciardo back on track

Andrew Benson

Chief F1 writer

"When Daniel Ricciardo said on Saturday evening that he 'couldn't wait for testing to be over', it's a fair bet he wasn't wishing for a final day like this.

"Ricciardo managed 10 laps this morning before an ERS problem - something of a recurring theme with Renault engines - consigned him to the garage.

"But after a four-hour delay he has finally gone out again. Only McLaren, with their new Honda engine, and Force India, whose new car did not appear until Friday, have done less mileage than Red Bull this winter."

Lunchtime quiz #2 Answer

I asked you who came next in this sequence of drivers: Olivier Panis, Eric Bernard, Johnny Herbert...

The answer is Franck Lagorce, and the reason, as many, many of you told me, was that he was the fourth and final man after Panis, Bernard and Herbert (below) to drive for the Ligier team in 1994.

Panis was ever-present for Ligier in 1994, his debut season, while Bernard contested 13 races and Herbert one before he was scooped up by Benetton. Lagorce was drafted in for the final two races of the year in Japan and Australia.

Johnny Herbert
Getty Images

Button and McLaren up and running

Finally we have some better news out of McLaren.

The MP4-30 has set a time in Jenson Button's hands - a 1:28.391 - and has done eight laps.

They're back in the pits again now mind you.

McLaren
McLaren