Mercedes

Mercedes-AMG Petronas Motorsport brought an updated bodywork kit to the second and final week of pre-season testing in Barcelona.

The team's programme for the day focused on the initial set-up work and developing an understanding of the new aero package; however, owing to an oil-pressure issue in the early afternoon, the team decided to swap the Power Unit which limited Valtteri's time behind the wheel.

Lewis drove the car in the morning, gathering data on the new aero package as well as working on the set-up of the car. Valtteri got a first feel of the W10 with the updated bodywork in the afternoon; however, his programme was limited owing to an oil pressure issue.

Lewis Hamilton: It's been a beautiful day here in Barcelona and it was great to see that even more fans turned out today. We got through our run programme and the car was feeling relatively good. It was an improvement from last week which is a good step. The tyres are also working a better now that the track temperature is a bit higher. We have to continue to analyse everything and keep pushing.

Valtteri Bottas: Unfortunately, after four days of flawless reliability last week, I spent most of the day waiting as we had an oil pressure issue on my first outlap and had to change the Power Unit. But I'm glad I still got to do a few laps, the team did a really good job to get the car out again; it was important to get a bit of a feel for the new aero package. My running was obviously very limited, but it seems like we've made improvements. We need to review everything in more detail tonight and I'm looking forward to continuing our programme tomorrow morning.

James Allison: It was not exactly the day we hoped for, running for the first time with the bodywork kit that we expect to use in Melbourne, with a large part of the day lost to an oil pressure issue at lunchtime. Nevertheless, either side of that problem we did do some useful things, finding that the car behaves a little differently with the new package. We're looking forward very much to have a trouble-free day tomorrow to get a better feel for what it can do.

Ferrari

Today was the first day of the final four-day test session at the Barcelona-Catalunya Circuit, prior to the start of the 2019 Formula 1 season. Charles Leclerc was at the wheel of Scuderia Ferrari Mission Winnow's SF90 in the morning and Sebastian Vettel drove in the afternoon. Between them, they completed 110 laps.

Leclerc spent less time on track than planned, because some checks were required on the SF90's cooling system. The Monegasque driver did 29 laps, working on set-up and tyre evaluation, before it was time to hand over to his team-mate.

Charles' best time was a 1:18.651 and had this to say at the end of his time in the car. "This morning we did fewer laps than planned, but I'm sure we can make up for lost work in the coming days. Track conditions were slightly different today compared to the first test, so it took a moment to adapt to them".

Sebastian Vettel got behind the wheel shortly after 2pm and continued working on the car in different configurations and simulating various race scenarios, including some long runs. The German did a total of 81 laps, with a best time of 1:17.925.

"It was a busy afternoon, but it was good to make up for the laps lost in the morning" - commented Sebastian at the end of the day - "We are still trying to understand the car, trying various set-ups. This afternoon, we also had a first go with the supersoft compound, just to get some more information. The next couple of days will be important for us".

Sebastian will be first in the cockpit of the SF90 tomorrow, before Charles takes over for the afternoon.

Red Bull

Pierre kicked off the second week of 2019 pre-season testing for Aston Martin Red Bull Racing by posting 136 laps of the Circuit de Barcelona-Catalunya, the largest single-driver lap count on day one at the Spanish track.

The long day's work at the wheel of the RB15 also netted the French driver the second fastest time of the day, a lap of 1:17.715s set on the yellow-banded C3 Pirelli compound.

Commenting on the day's running, Pierre said: "We pushed a little more today, but really it's all about understanding how the car works. There were a lot of aero tests and a lot of items to evaluate for the Team today, and that's good for me as it helps me get more comfortable with the car. Lap after lap it's getting better, but of course there's still work to do. The pace was good, but we just have to focus on ourselves and work through the programme we've defined for each day. So far it's been positive; we've managed to get through our plan and we've gained a lot of mileage. The potential is there so we'll just try to improve in the areas we can, keep our heads down and keep working."

Head of Race Engineering, Guillaume Rocquelin, added: "We had a successful first week of testing here in Barcelona. To start the week, we changed the run plan today slightly and focused on shorter runs, which enabled us to work through a greater number of test items. That obviously meant more time in the garage between runs, but it went very smoothly and we were able to tick a lot of boxes – including some purely procedural things that we wanted to get done. We were also able to look at performance a little more, hence Pierre's run in the afternoon, so in all it's been a very solid start. Tomorrow, we'll start to look more at race preparation."

Renault

To Follow

Haas

Rich Energy Haas F1 Team driver Kevin Magnussen began the second and final week of preseason testing Tuesday at Circuit de Barcelona - Catalunya behind the wheel of the Haas VF-19.

Keen to build upon his 125-lap total from last week's test sessions, the Dane ultimately set the highest single-day lap tally for the American squad in testing so far, accumulating a total of 131 laps on his return to the 4.655-kilometer (2.892-mile), 16-turn track.

Magnussen rolled out the garage shortly after 9 a.m. local time and proceeded to work through early reconnaissance laps on the C2 and C3 Pirelli rubber. A priority for the morning session was then accruing mileage on the VF-19, with Magnussen working on long-distance runs to deliver 84 laps by the lunch break.

The afternoon saw Magnussen produce his best lap of the day - a 1:18.769 utilizing the second-softest compound from Pirelli's available range in testing, the C4 tire. The time placed him eighth among the 13 drivers participating in Tuesday's session.

Teammate Romain Grosjean takes over the Haas VF-19 on Wednesday, with Magnussen returning for his final preseason stint on Thursday before Grosjean concludes preseason testing in Spain on Friday.

Kevin Magnussen: "It's been a good day with lots of laps. I'm very happy to have had a problem free day, it's been good just to run all day with no issues. We needed to start the week off like that. It's nice to get those laps in and see that the car is reliable. The car feels good and we managed to get some long runs in on different tires. Overall, it's been a very positive day."

Guenther Steiner: "It was a pretty good day. We managed to achieve our highest lap total since we started testing last week. We just got on with the job today, I think we've caught up a little bit with what we missed out on in week one. It's been a positive start, hopefully we can continue like this tomorrow."

McLaren

Lando completed a total of 80 laps today, despite a couple of small issues which led to two stoppages on track.

The first stopped running just before the lunch break and was caused by a loss of hydraulic pressure. The second happened just before the end of the day's running, the reason for which the team is still investigating.

Despite the minor disruption, the team made good progress with today's run plan as we start to turn our attention to final on-track preparations ahead of the Australian Grand Prix.

Lando Norris: "On the whole today was a good day, although we didn't get to do quite as much running as we wanted.

"We've improved the car slightly since last week, especially on the longer runs, so we're going in the right direction, which is positive. It's important that we keep doing that.

"Overall, I'm feeling more prepared. I now have one last session in the car on Thursday, to finalise everything before Australia."

Gil de Ferran, Sporting Director: "Unfortunately, we didn't complete as many miles as we had on the programme today, due to some small issues. Nevertheless, on balance, it was a positive day.

"We were again able to complete some important work in preparation for Australia, with regards to the development and our understanding of the car, as well as getting Lando ready for his debut grand prix. Onwards to tomorrow."

Check out our Tuesday gallery from Barcelona, here.