Hello and welcome to the first day of the second pre-season test of 2015. Two weeks after the last test in Jerez, the F1 teams have decamped to Barcelona for another four days of track action.
Lots of teams keen to make an early start as Felipe Nasr in the Sauber, Susie Wolff in the Williams, Kimi Raikkonen in the Ferrari, Lewis Hamilton in the Mercedes, Pastor Maldonado in the Lotus and Pascal Wehrlein in the 2014 Force India head out on track.
Max Verstappen in the Toro Rosso also heads out on track - only Jenson Button in the McLaren and Daniel Ricciardo haven't ventured out for an early installation lap or two.
@Heartmuscle: It's dry and clear but rather chilly. Track temperature is struggling to nudge 12C, but it should warm up nicely as the day progresses.
Your comments and questions are welcome throughout the day, so don't hesitate to get in touch.
Lewis Hamilton has clocked our first timed lap with a 1:55.515 on his fourth lap. Usual Mercedes efficiency at the start of the session.
@XanBex: I am sure she does want to, but that is not the official reason. She's been promoted to test driver this year, and Williams is one of the teams that still believes in allowing its test drivers to test. She's the first reserve if anything happens to its race drivers and is still involved in the development of the car. She'll also drive another test day at some point this season and two FP1 sessions as part of her deal.
@Awais: They will test the 2015 tyres on the old car, which is quite useful for making a direct comparison. Wehrlein is at the wheel of the car for two of the four days this week, which is part of the team's engine deal with Mercedes, so that's another reason.
@nicomaniac: Mileage is always important at tests, but we will start to get a clearer picture of the pecking order. However, don't be tricked into reading the headline times as a true indicator - the long runs is where the truth lies, although that is hard to determine exactly due to fuel loads.
@GB: My understanding is that it's part of the engine contract between Mercedes and Force India.
@jbedair85: Marussia still plans to race this year, but is at loggerheads with some of its rivals over whether it can run a 2014 car. It would need the agreement of all the teams and that isn't forthcoming.
The McLaren Honda heads out for a second run, which is a good sign for them at this early stage.
@jbedair85: Haas is still on track for its arrival next year. I think they have learned some lessons from the mistakes of the three teams that joined in 2010 and have since dropped out.
Red flag. It looks like a car has stopped on track as a recovery vehicle heads down the pit lane.
It's Maldonado. The Lotus has stopped in the first sector and he's facing the wrong way.
@Brolloks: No issues as far as I know. The car looks fairly familiar from the outside, but they had a huge advantage at the end of last year anyway. They didn't even get close to showing their true pace in Jerez and managed a lot of mileage over the course of the week - probably the most we have ever seen at a first test. But their main weak point last year was reliability and now each car is restricted to just four engines rather than five over the course of the season. I'd say they are still the overwhelming favourites and we should see a lot of new developments come to the car over the next two weeks.
The Lotus has finally returned to the garage and the track is green again.
@Senthil: Mercedes completed 516 laps at the first test and Ferrari managed 349. That's not to say the Ferrari won't be reliable, but it was mightily impressive from Mercedes at the first test as they focused on mileage over lap time.
Ricciardo heads out in the camo Red Bull.
Hamilton lowers the benchmark to a 1:37.684. An ominous early sign for the pack as it looked like the Mercedes backed off slightly.
@aman: He appeared to ease off out of the final corner.
Hamilton lowers the benchmark again, it's now a 1:30.329. Button slots in behind him with a 1:31.984.
Raikkonen has gone top with a 1:30.210.
Wehrlein, driving a 2014 Force India, jumps to the top of the board, posting a 1:29.675.
@AnkurMittal: It most certainly does. But it's also more expensive to get there and a longer distance to fly out new parts.