Formula 1: Day two of pre-season testing as it happened

Text commentary as world champion Sebastian Vettel manages just eight laps, while Jenson Button finishes fastest.

29 January 2014 Last updated at 07:48 GMT

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As it happened

  1. 16:18: 

    OK, that concludes this live text commentary for day two of testing, but we will be back 0800 GMT on Thursday for not only day three, but the latest on Red Bull after a trying couple of days so far. No more testing at Jerez for Sebastian Vettel as Daniel Ricciardo takes over. Join me then. Bye!

  2. 16:14: 

    As promised for reference, the fastest lap time on day two of testing at Jerez in 2013 was 1:18.218, set by Romain Grosjean.

  3. 16:12: 
    Lap times

    1. Jenson Button (McLaren) 1:24.165, 43 laps

    2. Kimi Raikkonen (Ferrari) 1:24.812, 47 laps

    3. Valtteri Bottas (Williams) 1:25.344, four laps

    4. Nico Rosberg (Mercedes) 1:25.588, 97 laps

    5. Sergio Perez (Force India) 1:28.376 , 37 laps

    6. Esteban Gutierrez (Sauber) 1:33.270, 53 laps

    7. Marcus Ericsson (Caterham) 1:37.975, 11 laps

    8. Sebastian Vettel (Red Bull) 1:38.320, 8 laps

  4. 16:07: 

    Red Bull's Sebastian Vettel, who managed just eight laps on Wednesday: "We've not had a lot of running and have a few problems to sort out but with such big rule changes it's usual to have teething problems. That's what tests are for, to sort those issues out. The next two days will be important to get some track time to prepare for the tests in Bahrain."

  5. 16:03: 
    CHEQUERED FLAG

    That is it for Wednesday's testing and Jenson Button tops the timesheet, with Nico Rosberg finishing just short of completing 100 laps. A good day for McLaren and Mercedes.

  6.  

    Caterham F1: DOH! Beaten by the clock... but we can still run through a couple more checks with Marcus Ericsson in the car so work continues.

    Dash! No chance for a crack in the Crystal Dome then.

  7. 16:00: 

    Nico Rosberg racks up his 93rd lap to equal the amount completed by all the drivers involved in Tuesday's testing. Almost time up for day two...

  8. 15:59: 

    Caterham: Bodywork on, floor on... 2.5 minutes left....

  9. 15:58: 

    Red Bull race engineering co-ordinator Andy Damerum has provided some information on the issue that caused Sebastian Vettel's testing to come to an abrupt halt earlier today.

    "It's obviously not ideal, but it's better to take the time to get to the root of the issue, so the decision to stop early today is probably a good one. We did get some track time this morning, however," he says. "As I said yesterday, even though it looks brief, the amount of useful data we're getting back is impressive. We cured the issue we had yesterday and ran that reliably this morning and it will be the same process this evening. It's a massive learning curve for everyone and it's simply a case of working through it step by step."

  10. 15:55: 

    Caterham: Eight minutes left of day two and we're aiming to send out Marcu Ericsson for one last run. Busy garage right now!

    A race against time! It feels like Richard O'Brien should be bouncing around outside the garage as tense music from the Crystal Maze counts down the clock. Will they get back out there?

  11. 15:53: 

    Less than 10 minutes remaining and Nico Rosberg is up to 88 laps, five short the amount the whole grid managed on Tuesday. He will surely surpass that in the coming minutes. Meanwhile, Esteban Gutierrez is also back out on the circuit.

  12.  
    Get involved

    Lawrence, via text: I think Caterham may surprise a few of the mid running teams this year and maybe score points with the help of Kamui Kobayashi's excellent overtaking techniques.

  13. 15:44: 

    Williams: That's it for us for today folks as Valtteri adds 35 laps to his tally Jerez.

  14. 15:42: 

    Nico Rosberg just cannot get enough of it out there as Mercedes feel confident enough in the reliability of the F1 W05 to let him loose in the car once again. Kimi Raikkonen also heads out for Ferrari.

  15. 15:40: 

    Marussia are in town and we will see their new car in testing on Thursday, and team principal John Booth believes fans will be "pleasantly surprised" by what will be on show. Technical issues meant the Banbury-based team were forced to miss the first two days of running.

    "We're happy with our development, our rate of progress," he says. "Year on year we've taken a step up in terms of what we have produced and we've taken a giant step this year."

  16. 15:37: 

    Nico Rosberg heads back into the pits on his 84th lap after hammering the set of hards he was on. His fastest time still stands at 1:25.588, over a second slower than Jenson Button. Just under 30 minutes of testing left for today.

  17. 15:30:  
    Ben Edwards, BBC F1 commentator at Jerez

    "Out on the track, the Mercedes engine definitely has more of a 'bark' than the Ferrari, whichever car it is in. The Sauber and the Ferrari sound slightly different, though. The Sauber has more of a whine on corner entry than the works car."

  18. 15:28: 

    Not too much to report on the circuit at the moment, but a few of you have been asking how the cars are sounding, so BBC F1 commentator Ben Edwards has just got back from having a listen...

  19.  
    Get involved

    Neil Dawes: It's quite concerning that Renault engines have very few laps done. Could we see a return of the Renault engine failures this year?

    Leonardo Opollo: Ain't writing off Red Bull yet. This is testing & Red Bull are known for coming out of tricky situations.

    Alexander Bridgwood: Don't think we should discount Red Bull yet. This is testing and Red Bull are known for coming out of tricky situations.

  20. 15:20: 

    Marussia: MR03, it's good to see you!

  21. 15:18: 

    Jenson Button is back out on the circuit, joining the Mercedes of Nico Rosberg, who is clocking up the mileage today as he completes his 65th lap of the day. The German is in with a solid shout of beating the amount of laps completed by the entire field on Tuesday (93).

  22. 15:16: 
    McLaren F1

    McLaren F1: RIP Papa - a touching memento on the helmet of Jenson Button.

  23.   
    Andrew Benson, Chief F1 writer

    "Red Bull design chief Adrian Newey was discussing on Tuesday the potential dangers of the large battery packs now required in F1 to run the hybrid 'Ers' systems which have become such an integrated part of the engine this season. 'These batteries can suffer thermal runaway through impacts,' Newey said, 'through causes which are difficult to predict and once they go into that it with such a big battery pack it is very difficult to control that fire, it is put it in the pit lane and watch it burn, frankly.

    "'I don't think it's a driver safety concern because you know about it in a reasonable amount of time, but it is still a danger. Also the voltages are now very high so large DC voltages are very dangerous, much more dangerous than AC voltage. So for the whole of the pit lane safety is a big challenge with these cars.'"

  24.  
    Get involved

    Ash032: Would be interesting to see the Lap times from First test last year.

    I will endeavour to put these in at the end of today's testing Ash.

  25. 15:05: 

    BBC F1 commentary box producer Tony Dodgins: "Here in testing, the cars have various warning lights on them. All have a flashing red light on the back of the car. This is a torque-reduction warning light. Basically, in the past, before a driver lifted off, he'd check his mirrors (well, usually) but with the torque distributor deciding where it is going to get the power from (engine, Ers, etc) various fuel-saving strategies could mean a car slowing down, say on the straight, other than simply via a throttle/torque map.

    "Therefore, they are experimenting with warning lights to warn following cars whenever there is a torque reduction. The flashing green light on the back of Marcus Ericsson's Caterham, meanwhile, signifies a rookie driver not yet in possession of a superlicence (although it is a formality). Not to be confused with the green light on top of the roll hoop, which signifies to pit crew/marshals that a car is Ers-safe at that time and they can touch it."

  26.  
    Get involved

    Roach, via text: I predict this season is going to be all about reliability and I fear Red Bull will suffer the worst. Adrian Newey will have undoubtedly designed a fast car but its Renault plant will stop it reaching the end of the races. 2014 is battle of the vexes!

  27. 15:01: 

    McLaren's Jenson Button is straight back on the circuit and smashes out a 1:24.165 to move top of the timesheet once again. Valtteri Bottas and Nico Rosberg join him, but Toro Rosso will not be making an appearance as the Renualt-powered car also has an Energy Recovery System issue.

  28. 14:56: 
    Sebastian Vettel

    Rumours abound that Sebastian Vettel has departed the Jerez circuit, with his time testing the RB10 over. Meanwhile, the stranded Caterham has been scooped up by the recovery truck and the circuit is clear. Should be green light soon for the last hour of testing.

  29. 14:51: 

    Caterham's problem means it is another Renault-powered car to have got into a spot of bother in Jerez.

  30. 14:46: 

    Mercedes: That red flag brings to an end a run of 21 consecutive timed laps for Nico Rosberg. Now back in the garage and downloading his thoughts.

  31. 14:40: 
    RED FLAG

    Another appearance from the red flag as Marcus Ericsson's Caterham has come to a halt on the circuit.

  32.  
    Get involved

    MJ: Red Bull hardly lit up the time sheets in last years testing, yet they go on to trounce the field. People have short memories.

    True, but Vettel got 198 laps under his belt in Jerez last year, compared to 11 this time.

  33. 14:38: 
    Testing update

    1. Valtteri Bottas (Williams) 1:26.322, 23 laps

    2. Kimi Raikkonen (Ferrari) 1:26.585, 26 laps

    3. Nico Rosberg (Mercedes) 1:27.073, 46 laps

    4. Jenson Button (McLaren) 1:27.556, 32 laps

    5. Sergio Perez (Force India) 1:28.376, 37 laps

    6. Esteban Gutierrez (Sauber) 1:33.363, 42 laps

    7. Sebastian Vettel (Red Bull) 1:38.320, eight laps

    8. Marcus Ericsson (Caterham) 1:38.438, eight laps

    Toro Rosso are still to complete a lap

  34. 14:35: 

    Williams: It's all system and reliability checks before we focus more on performance in Bahrain. Before we can have a quick car we need a reliable one!

  35. 14:31: 

    Nico Rosberg is the only driver out on the track at the moment, with the rest who were out there with him having returned to the pits.

  36.  
    Get involved

    Zach Kingsbury: Don't want to sound harsh on anything but I don't want Vettel to win this year. And I don't think he will.

    Edward Holt: Too early to tell about Red Bull but would be great to see Vettel chuck his teddies about race 5 or 6 because it isn't going well!!!

    Bradleigh Phelps: The 2014 rules were aimed at slowing Seb and Red Bull down and it seems to be working at the moment

  37. 14:25: 

    A short-lived spell at the top of the pile for Nico Rosberg as Kimi Raikkonen rattles round in 1:26.322 to leapfrog the German, who is then pushed down to third when Valtteri Bottas pops 1:26.577 on the board.

  38. 14:22: 
    Timesheet

    Caterham on Twitter: Who says you shouldn't read too much into testing times? Seems legit... ;)

  39. 14:20: 

    Can't read too much into things at this stage, but I'd be surprised if Nico Rosberg has not allowed himself a cheeky smile today. The German has completed 44 laps in the Mercedes without trouble and he has just jumped to the top of the timesheet with 1:27.073.

  40.  
    Get involved

    Ben, via text: Interesting how the teams doing most of the running are using Mercedes power. Are Mercedes better prepared for the new regulations than Ferrari and Renault maybe?

  41. 14:15: 

    Force India: Sergio's car is back in the garage after stopping on track. Investigating the causes.

  42. 14:11: 

    Sergio Perez's Force India has now been transported back to the garage, the track is clear and we are up and running once again. A couple of hours of testing remain.

  43.  
    Get involved

    So what do we all think about Sebastian Vettel and Red Bull? Managing just 11 laps over the course of his two days of testing at Jerez is hardly the ideal start to his title defence, but is it nothing to worry about or a warning of potentially troubling times ahead?

    Let me know your thoughts on Twitter via #bbcf1 and text me on 81111 (UK only)

  44. 14:08: 

    F1 Racing magazine associate editor James Roberts: So far today Mercedes-powered engines have completed 123 laps; Ferrari 56 laps and Renault just 13 laps in total. Not good!

  45. 14:01: 

    Extinguishers are spraying under the Force India's engine cover and, while it would appear things are ok now, there may well be damage. A potentially disappointing end to what had been shaping up to being a decent day for Sergio Perez.

  46. 13:57:  
    Lee McKenzie, BBC F1 pit-lane reporter
    Sergio Perez

    Extinguishers blasting away on to the Force India.

  47. 13:54:  
    Ben Edwards, BBC F1 commentator at Jerez

    "Sergio Perez's Force India has just stopped in front of me at Turn One. When the cars stop you can really see how hot the back ends are. The heat pours off them and the teams get to them as fast as they can - before very long at all, three Force India mechanics were there with cold-air blowers. Then a fire extinguisher was needed, although it is all under control."

  48. 13:52: 
    RED FLAG

    The red flag is out for the second time today as Sergio Perez, with a bit of smoke emanating from the back of his Force India, comes to a stop at Turn One.

  49. 13:48: 

    So if, as it would seem, Sebastian Vettel's day is over, that is just eight laps completed today for 11 over the course of the two days so far. Early days, but not the best start to his title defence.

  50. 13:38: 

    There is just the Mercedes of Nico Rosberg out on the circuit at the moment, with Kimi Raikkonen and Marcus Ericsson having both returned to their respective garages. It would seem Sebastian Vettel's day might be over, with Sport Bild reporter Bianco Garloff reporting that the Red Bull's 'turbo caught fire.'

  51.  
    Get involved

    Peter, via text: The new regulations this year have clearly produced some ugly looking cars (ref noses)! Lets hope the performance and more importantly the excitement of F1 Grand Prix racing doesn't get lost to memory and these new vehicles end up just following the lucky guy who starts at the front.

  52. 13:24: 

    After a brief spell of silence on the circuit, Ferrari's Kimi Raikkonen is back out, as is Caterham's Marcus Ericsson. Just Toro Rosso left to make an appearance this afternoon, as BBC F1 commentary box assistant Tony Dodgins confirms today comes too soon for Marussia.

    "Marussia's garage is set up, the new car is en route, and is about two hours away," says Dodgins. "It will not run today, probably tomorrow morning but not necessarily first thing. Max Chilton will run first and then Jules Bianchi on Friday."

  53. 13:16:  
    Andrew Benson, Chief F1 writer
    Ferrari

    "The new Ferrari has not exactly received an overwhelmingly positive response on the looks front, with its 'vacuum-cleaner' nose and 'beluga' hump. But from certain angles - particularly low down and front on, when the hump is less obvious - it reminds me of one of the most iconic F1 Ferraris of all time - the 640, or F1-89 - from 1989, the car which introduced semi-automatic gearboxes into F1.

    "It's fascinating that Ferrari, Mercedes and Red Bull - last year's top three teams - have all eschewed the 'anteater' nose in favour or a lower, wider design. If it was just one of them, you might think they could have missed something. But all three? They must be on to something - almost certainly the pursuit of front downforce. The low nose blocks the airflow under the car and to the rear, but the bigger underside could well generate more downforce at the front. And generally, in recent years, performance has been limited by how much front downforce can be run, and the need to balance the car front to rear."

  54. 13:11: 

    Right on cue, Kimi Raikkonen emerges on to the circuit in the F14-T for a brief run before diving back into the pits.

  55. 13:07: 

    A solid 10-lap run for Jenson Button and he is back in the McLaren garage. Both he and Sergio Perez are getting closer to the 1m27.1 Kimi Raikkonen set yesterday. Haven't seen too much of the Finn, incidentally, since he piled in a few runs this morning. Ferrari did say a couple of hours ago they planned to work on the car 'to prepare this afternoon's programme.'

  56. 13:02:  
    Ben Edwards, BBC F1 commentator at Jerez

    "I'm back out at Turn One and it was interesting to hear Nico Rosberg's Mercedes engine already in cylinder-cutting mode on the first lap through. It was difficult to tell whether it was on entry or exit and then it did not do it the next time around. Both he and Jenson Button, who is fastest in the McLaren at the moment, are beginning to push reasonably hard, although they're clearly nowhere near flat out yet.

    "Watching Williams's Valtteri Bottas earlier, he is revelling in the immediate throttle response of these engines - brought about by the motor-generator unit on the turbo being used to spool it up to speed so it is ready as soon as the driver goes on the accelerator. Turbo throttle lag is history."

  57. 12:59: 

    Nico Rosberg is back out in the Mercedes and is improving with every lap. The German's best of 1:31.227 puts him third on the board, behind Force India's Sergio Perez (1:28.376) and McLaren's Jenson Button (1:27.556).

  58. 12:56: 

    Force India: Purple, Purple, Purple! Three sector bests for Sergio Perez and a new fastest time. Getting more confident with his VJM07. Most importantly, though, lots of good work being done by driver and team - this is what winter testing is all about!

  59. 12:53:  
    Andrew Benson, Chief F1 writer

    "Wet tyre testing was brought forward from Friday to today after a downpour overnight. The wet tyre has a new rear tread pattern in order to reduce aquaplaning by increasing how much water can be dispersed at full speed - now up to 65 litres per second from 60 litres per second previously. It also has a new compound that is able to work well in damp and/or drying conditions, in order to increase the crossover point to the intermediate tyre."

  60. 12:47: 

    Sergio Perez and Jenson Button are trading places at the top of the timesheet as the pair continue to gobble up laps. Button's best of 1:29.114, set not too long ago, is subsequently bettered by Perez as he goes round in 1:28.376.

  61.  
    Get involved
    Gonzp

    Andy Holgate: The cars look inspired by Gonzo (pictured right)

    Joel Bennett: How about the Ferrari/Whale shark??

    David Turner: The McLaren nose resembles a COBRA about to strike.

    What do you think of the new Formula 1 cars, and what do their designs remind you of? Keep your nuggets of gold coming to #bbcf1, or text suggestions to 81111 (UK only)

  62. 12:36: 

    Caterham join the fray as Marcus Ericsson pops out for an installation lap before returning to the pits to allow the team to run through several checks.

  63. 12:32: 
    Jerez circuit

    After murky start to the day the sky is now blue above the drying Jerez circuit following a wet session of testing this morning. Jenson Button is clearly making up for time lost on Tuesday and has 21 laps under his belt in his patched-up McLaren. His latest time of 1:29.114 moves him back on top of the pile.

  64. 12:23: 

    Some of you may be wondering where Marussia is this week, with the team absent from Tuesday's testing and, so far, not present today. The debut of their MR03 has been delayed because of, according to the team, 'a small but frustrating technical issue', but word is they are en route to Jerez and set to arrive sometime this afternoon. It remains to be seen whether they will make an appearance today.

  65. 12:19: 

    It is all action on the circuit now as Jenson Button, on the slick tyres, improves his best time to 1:32.443 before Sebastian Vettel slots in fourth fastest with his first timed effort of 1:38.320. However, Sergio Perez is out on the slicks and he soon goes fastest of all with 1:29.641.

  66. 12:12: 

    But there is light, as Caterham add: The bodywork's on, the garage doors are open and we're nearly ready for Marcus Ericsson to head out for our first day-two laps.

  67. 12:10: 

    Just two teams are still to make an appearance on the circuit today - Toro Rosso and Caterham. We may have been having a little fun with Caterham's nose design this morning, but it sounds like it has been a trying day so far for the team.

    They have tweeted: "Fair to say it's been a testing morning ... we solve one issue and another crops up, but that's why we're here!

  68. 12:02: 
    McLaren's Jenson Button

    Nico Rosberg breaks the silence to head back out on the circuit in his Mercedes and he is off the mark with 1:41.278. Jenson Button is also out in the McLaren, with Sebastian Vettel back in the Red Bull and back on the circuit.

  69. 12:00: 
    Testing update

    If you are just joining us on your lunch break which, coincidentally, most of the drivers are on, then here is a quick recap of the morning so far. There have been 99 laps completed - already more than the whole of Tuesday - with Sauber's Esteban Gutierrez accounting for 33 of those. However, a lengthy time on the circuit came at a price for Gutierrez as he spun off onto the gravel, causing the red flag to make an appearance.

    Everything is going swimmingly for McLaren as Jenson Button tops the timesheet with 1:36.094. As always, though, it is not worth reading too much into that time.

  70.  
    Get involved

    John Le Signe: Never mind Anteater, the Ferrari looks like a vacuum cleaner! Maybe it will go round hoovering up rubber left by the other cars?

    Chris Cooper: The new Caterham looks like an Easter Island Moai. Strong brow and nose.

    Elliott Hutchins: The caterham nose reminds me of a giraffe with sunglasses!!! I actually quite like it in a weird way. Love their livery!

  71. 11:41:  
    Andrew Benson, Chief F1 writer

    "Among the teams with a lot on their plate on this second day of the test are world champions Red Bull. Sebastian Vettel got out for only three exploratory laps on Tuesday and when he returned to the pits the back of the car was on fire. Design chief Adrian Newey was on Tuesday bemoaning the loss of several ways in which they gained performance over the last few years - including the banning of exhaust-blow rear aerodynamics, at which they were particularly adept, and the requirement now to put the batteries for the hybrid systems on the front of the engine. Red Bull found a performance gain in putting them in the gearbox bellhousing from 2011-13."

  72. 11:36: 

    No we won't be as Sebastian Vettel is straight back into the pits. Silence, once more.

  73. 11:35: 

    Most, except for Sebastian Vettel, who instead jumps back in the RB10 and gets back out on the circuit. Could we be seeing his first timed lap in testing shortly?

  74. 11:33: 

    Valtteri Bottas has just scarpered to the Williams motorhome to wolf down a bit of food. There is no official break for lunch in testing but the silence on the circuit suggests this might be the time most take as an opportunity to tuck into their cheese and pickle sarnies.

  75. 11:28:  
    Andrew Benson, Chief F1 writer

    "Everyone wants to know how different these cars will be for the drivers, and as usual no-one can agree. Lewis Hamilton said the grip, downforce, power and tyres were all different. Kimi Raikkonen said 'from the driving side it's not a lot different'. And Williams's Valtteri Bottas said the 'main difference is definitely the engine ands how the power comes exiting the corners'. Fundamentally, the new turbo engines and aerodynamic rules mean that the cars will have much more torque - grunt out of corners - and less grip as a result of slightly reduced downforce and less grip from the tyres."

  76. 11:24: 

    Quietness has once again descended on the Jerez circuit. There have been a couple of questions from you asking how the new cars have been handling. I'll hand over to our chief F1 writer Andrew Benson to explain more...

  77.  
    Get involved
    Caterham

    Clive Crossman: Could the Caterham be based on a Green nosed Mandrill?

    Henry Ashman: The Caterham nose reminds me of the Xenomorphs in Aliens with the mouth in a mouth thing going on there.

    Kamesh: The Ferrari nose reminds one of a bottlenose dolphin.

  78. 11:10: 

    Jenson Button: "The circuit's almost dry. There are still a few wet patches, but it'll be dry after lunch."

  79. 11:08: 

    Jenson Button is straight to the top of the timesheet with his first flyer, clocking 1:36.232. The Briton then goes even quicker, shaving off 0.138s. Cars are running on intermediates as the circuit continues to dry out. No sign of 'water tractor', as I've decided to name it, being called upon as yet.

  80. 11:03: 
    Esteban Gutierrez

    Esteban Gutierrez's Sauber is back in the garage after that earlier spin, the green flag is waved and off we go again. No messing from Mercedes' Nico Rosberg as he quickly heads out, followed by the McLaren of Jenson Button.

  81. 10:53:  
    Lee McKenzie, BBC F1 pit-lane reporter

    "Esteban Gutierrez had just set his fastest time of the day so far (1:41.798) when he spun off into the gravel. There's now a break in proceedings as his car is recovered. The conditions have changed a great deal during the morning. The day started wet and grey, but the sun is now out and the track is drying rapidly."

  82. 10:50: 

    Esteban Gutierrez is out of the car and the crane is now on the scene to take away his Sauber.

  83. 10:44: 
    RED FLAG

    Red flag is out for the first today as Esteban Gutierrez, the only driver on the circuit, spun at Turn Five and into the gravel.

  84. 10:34: 

    Now emerging onto the circuit is Nico Rosberg in the Mercedes - just reward for the team after they worked through the night to ensure they could resume testing after Lewis Hamilton's wing failure on Tuesday.

  85. 10:33: 

    The developing story of Eric Boullier's appointment as racing director of McLaren is on the BBC Sport website. Interesting to note there is no mention of ex-team principal Martin Whitmarsh in the statement, which went into detail about the structure of McLaren Racing.

    Whitmarsh has not been at work since Dennis regained control of the F1 team on 16 January.

  86. 10:27: 
    Esteban Gutierrez at Jerez

    On to lap 24 for Esteban Gutierrez, meaning he is just seven shy of the 31 racked up by Kimi Raikkonen - the most of any driver on Tuesday.

  87. 10:24: 

    Lotus F1: Congrats and good luck to Eric Boullier just announced as Racing Director of McLaren F1.

  88. 10:22: 

    With no update on Michael Schumacher's condition since 6 January, professor Gary Hartstein, Formula 1's chief medic between 2005 and 2012, and Mr Colin Shieff, neurosurgeon at the National Hospital for Neurology and Neurosurgery in London - attempt to tackle some of those questions in an article on the BBC Sport website.

    It is important to stress that neither man has been involved in the Ferrari legend's treatment, but they offer their insights into how a patient with injuries like Schumacher's might be treated and run through the possible prognoses based on their experience of similar cases.

  89. 10:18: 
    Schumacher update

    It is exactly one month since a ski accident left Michael Schumacher with critical head injuries and the Formula 1 legend remains in a medically-induced coma in a French hospital.

    A statement has just been released by Sabine Kehm, Schumacher's manager, which reads: "I am stressing again that any statement regarding Michael's health not coming from the doctors treating him or from his management must be considered as speculation. I repeat that we will not comment on any speculation."

  90. 10:13: 

    Back to matters on the circuit and Kimi Raikkonen briefly leaps to the top of the timesheet with 1:38.272, but Valtteri Bottas reclaims top spot with 1:38.102 on his 10th lap. Jenson Button is back out on the circuit in 'Nellie'.

  91.  
    Get involved

    Smoore326: Nice image. McLaren MP429 must now be known as 'Nellie'. Nellie the Elephant packed her trunk and said goodbye to the circus...

  92. 10:06: 
    Boullier in at McLaren

    All quiet on the circuit once again but a bit of breaking news to bring you. McLaren have confirmed the appointment of Eric Boullier as the team's racing director.

    Boullier resigned as Lotus' team principal last Friday.

    A McLaren statement reads: "Working with Jonathan Neale (chief operating officer) and his senior colleagues within McLaren racing, Eric will ultimately report to the chief executive officer of McLaren Racing, an all-new position, whose yet to be appointed occupant will in turn report to Ron Dennis."

  93. 09:59: 

    Three laps completed for Sebastian Vettel, but no timed effort as yet in the RB10. We have had six of the nine scheduled drivers out on the circuit so far this morning, with Mercedes' Nico Rosberg, Toro Rosso's Daniil Kvyat and the much-discussed Caterham of Marcus Ericsson yet to make an appearance. No rain at Jerez and parts of the track are drying up.

  94.  
    Get involved
    McLaren

    Anyone having this one? McLaren's MP4-29 and an elephant (playing football).

    Let me know what you think of the new F1 cars and what they look like via #bbcf1 and on text 81111 (UK only)

  95. 09:48:  
    Ben Edwards, BBC F1 commentator at Jerez

    "I'm standing at Turn One. It's damp rather than wet, not raining but the air is cool. There is some spray coming off Valtteri Bottas's Williams on the straight and a little as he rounds the corner. The drivers are having to get used to much greater torque from 2014's new turbo-charged engines, and the Finn holds a nice oversteer slide just now through the tricky uphill corner. There's not a lot of running going on. There has been a lot of talk about the sound of the new engines, and while they are different, I like it. They sound powerful and muscular, and really quite evocative. Now Sebastian Vettel has gone out to put more miles on the Red Bull. It's a fascinating time."

  96. 09:39: 

    It was a frustrating day for McLaren and Jenson Button on Tuesday as an electrical problem meant the new MP4-29 stayed in the garage. But it is so far so good this morning as Button completes his third lap before returning to the pits. Williams, who managed five laps yesterday, are getting some decent running under their belts so far and Valtteri Bottas clocks the fastest time in the wet so far with 1:38.944.

  97. 09:33:  
    Andrew Benson, Chief F1 writer

    "The look of the 2014 cars had already become controversial, after a series emerged with rather unusual looking noses over the days leading up to the first test. F1 insiders had been expecting the phallic-looking protuberances that have sprouted out of the front of many of the cars. But there were some surprises in store on Tuesday. The first was just how elegant and attractive the new Red Bull and Mercedes looked. The second was the shock at the appearance of the new Caterham, whose wedge-shaped front and apparently tacked-on nose prong had the look of something that had been conjured up by a nine-year-old with some cardboard boxes and toilet rolls. Even the team themselves admitted it had a 'Marmite' quality to it."

  98.  
    Get involved

    John, via text: You'd have thought F1 would have learnt its lesson after the whole 'stepped' nose debacle. Some of them aren't too bad but the Ferrari looks hideous and the McLaren frankly disgusting. F1 should be about beauty as well as speed.

    Kiri, via text: I don't get why everyone is so looks obsessed, I'm of the same opinion as Kimi and Seb - all that really matters is the performance. There are no points available for the prettiest car.

  99. 09:27: 
    Lap times so far

    Just three drivers have put times on the board with 90 minutes of testing gone:

    1. Kimi Raikkonen (Ferrari): 1:39.148, five laps

    2. Sergio Perez (Force India): 1:41.444, five laps

    3. Esteban Gutierrez (Sauber): 1:44.610, seven laps

  100.  
    Get involved

    Clark Wainwright: You compare f1 noses to anteater - Caterham F1 is more Sam The Eagle from The Muppets.

  101. 09:18: 

    As expected, Sebastian Vettel makes a morning appearance on the circuit, heading out for a lap in this second hour before returning to the Red Bull garage, while Kimi Raikkonen is round in 1:39.148, the quickest so far on day two.

  102. 09:08: 

    Sergio Perez heads out for his first flyer, clocks 1:41.444 to knock Esteban Gutierrez's best effort (1:44.610) off the top of the board before the Force India driver heads back in again.

  103.  
    Get involved
    Formula 1

    Many of the F1 cars' noses this year have been compared to this furry mammal - the anteater. Here are a few of your thoughts on this year's cars.

    Michael Toomey: Some people think horses are beautiful and, no doubt, some feel the same way about anteaters!

    Be Fighting Fit: Looks of the cars are irrelevant. This isn't Britain's next Top Model, it's about performance and design creativity to maximise that.

    Darren Brown: If you stick a couple of eyes on the McLaren you will get an elephant lol.

    Have your say via #bbcf1

  104. 08:50:  
    Andrew Benson, Chief F1 writer

    "First day 'honours', such as they were, went to Ferrari and Kimi Raikkonen, who set the 'fastest' time, about 0.7secs ahead of Lewis Hamilton's Mercedes. 'The biggest challenge is getting the new stuff working as we want and working together with the electric motor on the engine and all those small details, it is more tricky than the ones we are used to,' the Finn said. 'From the driving side it is not an awful lot different, it is just the first day with all new stuff so it takes time to get things as we want, there is along way to go and a lot of work to do, but the things are running pretty OK so not too bad.'"

    Read Andrew's report on day one of testing on the BBC Sport website.

  105. 08:45: 

    Esteban Gutierrez is our first man to put a timed lap on the board, navigating the damp circuit in 1:49.424. Force India's Sergio Perez emerges for the first time, quickly followed by Ferrari's Kimi Raikkonen, who clocked day one's fastest time.

  106. 08:39: 

    A bit of movement once again on the circuit as Esteban Gutierrez pops out once for a second lap in the Sauber. Red Bull's Sebastian Vettel racked up three laps late on day one and I expect he will be out much earlier today, although no sign of the German just yet.

  107.  
    Get involved

    Sam Porter: Some of the cars look better than others, I like the Caterham approach, favourite is the Red Bull. Lots of variety!

    What do you think? Have your say via #bbcf1 or fire over a text to 81111 (UK only).

  108. 08:31: 

    On that 'ugly' Caterham CT05 nose, here is what driver Marcus Ericsson had to say: "People either love it or hate it

    "The reaction to the car has been huge, but to me it's not really important what it looks like, as what counts is how quick it is."

    For those who recoil in disgust at the very sight of the Caterham's nose, let the team's technical director Mark Smith potentially allay your fears. "The package we start testing with is by no means our definitive answer and we fully expect to evaluate alternative solutions throughout the course of 2014," he said on Tuesday.

  109.  

    Alex Bone: The 2014 F1 cars will definitely go down as the ugliest in history. The new nose designs are hideous.

  110. 08:25:  
    Andrew Benson, Chief F1 writer

    "McLaren need a competitive car and a good season in 2014, for all sorts of reasons, but largely because 2013 was so dismal. But it did not get off to a good start. They failed to get the car out of the pits at all on day one after suffering what they described as 'predominantly electrical issues'. McLaren described the day as 'challenging', saying they had 'dismantled, inspected and re-installed several major components'. That's one of Jenson Button's six days of pre-season testing gone. The Englishman is in the car today."

  111. 08:20: 
    GO! GO! GO!

    The green flag is out and immediately Jenson Button's McLaren MP4-29 takes to the track for an installation lap, quickly followed by the Williams of Valtteri Bottas and Esteban Gutierrez in the Sauber.

  112.  
    Get involved
    Caterham

    While we wait for things to get going in Jerez I'll take this opportunity to issue a plea for your involvement throughout the day. One of the biggest talking points concerning the 2014 cars is their look, with Caterham's CT05 in particular dividing opinion because of its unusual front nose, which has been labelled "ugly" by some Twitter users.

    A lot of cars boast what insiders call an 'anteater' nose, while the front of the new Ferrari has been likened to a vacuum cleaner.

    What are your views on the look of the cars? In reference to the 'anteater' description, what do you think some of the cars look like? Send across your thoughts to #bbcf1 hashtag or text 81111 (UK only).

  113. 08:09: 
    Driver line-up

    Red Bull: Sebastian Vettel

    Mercedes: Nico Rosberg

    Ferrari: Kimi Raikkonen

    McLaren: Jenson Button

    Force India: Sergio Perez

    Sauber: Esteban Gutierrez

    Toro Rosso: Daniil Kvyat

    Williams: Valtteri Bottas

    Caterham: Marcus Ericsson

  114. 08:07: 

    We are still waiting for the track to open as the rain-bringing tractor continues to trundle around the circuit. Hopefully should be hearing the firing up of engines shortly. As we wait, let's have a look at the projected driver line-up for today...

  115. 08:05:  
    Andrew Benson, Chief F1 writer

    "Things started so well for Mercedes on the first day of testing. Their car was the first one out, and the first to do a timed lap. Lewis Hamilton was setting the pace and then, bang, the front wing fell off on the main straight, Hamilton speared into the barriers and all of a sudden things were not going quite so well. It was ironic that the failure was on a part that, while new, was not one that should have been affected by the new rules. ''These are things we test extensively,' said Mercedes co-team boss Paddy Lowe, 'and model a lot of work in the laboratory, so it is a confusing situation for us.' Mercedes were hopeful of finding a fix overnight to allow for running on Wednesday."

  116. 08:02: 

    Mercedes will likely be looking to get out on the circuit pretty quickly this morning after technical gremlins cut Lewis Hamilton's time on the circuit yesterday, with the Brit crashing out after only 18 laps. His team-mate Nico Rosberg is taking on the wet-weather testing responsibilities today.

  117. 07:59: 

    It is all bit gloomy at Jerez this morning with rain having fallen overnight. There is no rain at the moment but the circuit is a bit damp, although seemingly not damp enough as a tractor sprays more water on the circuit from a water tank. That means wet-weather testing, initially planned for Friday, has now been moved forward.

  118. 07:56:  
    Andrew Benson, Chief F1 writer

    "The Formula 1 teams have spent the last two years or so telling the media just how complicated the 2014 regulations are and just how much reliability would be at a premium while they learn about the new cars. They were not kidding. On the first day of pre-season testing on Tuesday, the 10 teams in Jerez collectively managed just 93 laps. Only six of them recorded a timed lap, one team did not get out at all, one did not even have a car at the test for its crew to work on and the fastest time was about 10 seconds off the pace set on the same day last year. All involved will be hoping things go a bit better on Wednesday."

  119. 07:53: 
    F1 testing

    ...except it didn't so much begin with a bang, but a whimper.

    Yep, the revolution of Formula 1 got off to a pretty low-key start with silence largely prevailing at the Jerez circuit on Tuesday. Just 93 laps were completed by the entire field, compared to 637 on day one last year. That ginger approach should be absent today with teams promising to get more running under their belts today. So settle in and join me for the next eight hours or so on day two of pre-season testing.

  120. 07:50: 
    Formula 1

    Ahh the first day of pre-season testing. It marked the start of a new era in Formula 1. The exciting new world of turbo engines. The brave unknown....

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