Tom Clarkson
BBC F1 pit lane reporter

"Notice the sheet under Kvyat's car, to keep away prying eyes. Red Bull think of everything, don't they?"

The marshals do a great job recovering the Red Bull quickly and now we're back under way.

It's Daniil Kvyat who has stopped out on track. More problems for Red Bull.

The red flag is out for the first time today!

McLaren:, external Jenson's completed his installation. Now waiting for the track to dry a little...

Marcus Ericsson improves to a 1:37.533, 0.338 seconds off the pace set by Daniil Kvyat. Romain Grosjean and Felipe Massa have set lap times, but they're nothing to write home about.

Andrew Benson
Chief F1 writer

Image source, AP

"A Sauber at the top of the timesheet? You don't see that everyday, but that is where new recruit Felipe Nasr found himself on Tuesday - and that followed second-fastest times from team-mate Marcus Ericsson on the first two days of the test.

"As Nasr himself pointed out, though, he was out on soft tyres, when everything else was using mediums, and this is not likely to be the start of a major Sauber assault on the front of the grid. 'To be honest, I don't feel we're going to be leading sessions in this car in all the situations, but nevertheless it feels good to finish first,' the Brazilian said.'"

If the season started tomorrow, how would you rank the teams? Answers on a tweet, using the #bbcf1 hashtag or text 81111 (UK only), remembering to put your name on those texts.

McLaren's Jenson Button makes his first appearance of the forming, completing a single lap before heading back to the pits.

Honda Racing F1:, external It's time. The engineers are finishing up. Now it's down to @JensonButton and the power unit. #McLarenHonda

Daniil Kvyat gets a time on the board early doors with a 1:37.195, 21 seconds fastest than Marcus Ericsson's opener in the Sauber but considerably slower than the quickest times we've had over the last few days.

So far, the Russian has managed to keep hold of his front wing, which he broke on Monday limiting his running as Red Bull had no spares at the circuit, so he'll be hoping it stays that way.

Image source, Lotus

Lotus:, external @RGrosjean heads out for a cheeky look-see to start the day at @circuitodejerez

Image source, Nico Rosberg

With Lewis Hamilton in the Mercedes, Nico Rosberg has some time on his hands. So the German, who completed a massive 308 laps over two days, has arrived at the circuit and is currently doing a Q&A via his Twitter account, external in Spanish, one of five languages he speaks - German, English, Italian and French are the others if you were wondering.

Andrew Benson
Chief F1 writer

"What does the day have in store? Can a car powered by something other than a Ferrari engine top the times, after two Ferrari bests and, on Tuesday, a Sauber, of all things? Can Mercedes break 500 laps for the week? Will the McLaren-Honda run all day? There is plenty to watch out for as the teams hit the one-third distance mark of their preparation for the start of the season."

We're already under way in Jerez, with Lewis Hamilton out nice and early to get an installation lap out of the way. He's soon followed by Marcus Ericsson, Daniil Kvyat, Max Verstappen and Felipe Massa.

As mentioned, Lewis Hamilton will drive the Mercedes, while Jenson Button takes the wheel of the McLaren. Elsewhere, Red Bull run Daniil Kvyat and Felipe Massa will be in the Williams.

Kimi Raikkonen keeps hold of the Ferrari, Max Verstappen reclaims the Toro Rosso, Romain Grosjean gets his first taste of the new Lotus and Marcus Ericsson is back in the Sauber.

Image source, Getty Images

F1 journalist Dan Knutson in Jerez: "The track is wet after 0.4mm of rain fell just after 07:00 local time.

"It took a long time for the track to dry after yesterday morning's brief rain shower, and Kimi Raikkonen said some patches of track never properly dried out all day.

"The air temperature is 7.8C and the track temperature is 6.7C."

Image source, Getty Images

On the face of it, Sauber have had a stormer so far in Jerez, with the car finishing second quickest on the first two days and fastest of all yesterday.

But it's unwise to read too much into the times at this stage of the season. The teams' focus is not on performance but rather set-up and getting an understanding of how their 2015 challengers work.

It won't be until the final test in Barcelona, which starts at the end of the month, where we will get a truer picture of the pecking order.

But what we can find out in Jerez is who is reliable and who is not - so watch this space.

Morning all and welcome to our live text coverage of the final day of the first pre-season test at Jerez, southern Spain.

Mercedes have looked supreme over the first few days and Ferrari and Williams look pretty handy, too. Red Bull have had it tough, but not as tough as McLaren, who only got their first meaningful laps on the board yesterday.

Over the next EIGHT HOURS, the drivers will circulate the track before the teams pack up and head back to their factories. Two more tests follow, both in Barcelona, before the season starts on 15 March in Melbourne, Australia. It's almost upon us.

The Brits are back. Back again.

Image source, PA

Yep, Lewis Hamilton and Jenson Button will get behind the wheel of their respective 2015 challengers today for a second day of running.

Image source, PA

But will they end the day with a reason to raise a smile?