Formula 1 testing day six - Sebastian Vettel crashed into barrier

Summary

Sebastian Vettel OK after crashing into barrier
McLaren's Carlos Sainz sets fastest 2019 testing time but then breaks down
Alonso becomes McLaren ambassador, Sirotkin named as Renault's reserve driver
Afternoon session 13:00 to 17:00
Testing finishes on Friday
Get involved: Your reaction to Alonso becoming McLaren ambassador #bbcf1

Live Reporting

Michael Emons

'We've improved the car'published at 08:06 Greenwich Mean Time 27 February 2019
A mixed day for Lando Norris, who was quickest, but also broke down twice.
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Postpublished at 08:05 Greenwich Mean Time 27 February 2019
A quick round-up of the social media reaction from the main men involved...
Yesterday's statspublished at 08:04 Greenwich Mean Time 27 February 2019
And these were the times of the drivers involved. It was a long day for some with Pierre Gasly, Kevin Magnussen, George Russell and Alexander Albon all in their cars for more than 100 laps
Image source, F1
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What happened on Tuesday?published at 08:03 Greenwich Mean Time 27 February 2019
Andrew Benson
BBC Sport’s chief F1 writer
British rookie Lando Norris set the fastest time in his McLaren on the first day of the final pre-season test.
The 19-year-old used the second softest tyres to pip Red Bull's Pierre Gasly by just 0.006secs before breaking down on track in Barcelona.
Gasly, using the middle of five compounds, was 0.109secs ahead of Lance Stroll's Racing Point.
Ferrari's Sebastian Vettel was a further 0.101secs back while Lewis Hamilton was 12th fastest for Mercedes.
Hamilton's team-mate Valtteri Bottas stopped on track with a loss of oil pressure and Mercedes decided to change the engine. Bottas only made it out again for the final eight minutes of the session to set the 11th fastest time.
Image source, Getty Images
Hi therepublished at 08:03 Greenwich Mean Time 27 February 2019
Hello and welcome along to day six of Formula 1 testing. Thanks for joining us.
I'm Michael Emons and it is my pleasure to talk you through all the action today. First up, a quick recap of what you may have missed yesterday.
Highs and lows for McLarenpublished at 07:53 Greenwich Mean Time 27 February 2019
A Formula 1 legend was in Barcelona during Tuesday's testing...
Image source, Getty Images
...and Fernando Alonso would have liked what he saw as his former team McLaren ended the day top with rookie Lando Norris the quickest man out there.
Image source, Getty Images
Although not everything went smoothly. Norris twice stopped in the gravel as his car faltered, while it was a tough day for world champions Mercedes with an oil leak early on for Valtteri Bottas ruining their afternoon.
Image source, AFP
What's going to happen today? Let's find out.