Mercedes, Ferrari, McLaren, Racing Bulls and Cadillac additionally ran on Thursday.
Lewis Hamilton had a spin within the Ferrari out of Flip 10, however he and team-mate Charles Leclerc managed 170 laps between them.
Seven-time champion Hamilton mentioned: “Good to get out within the dry. It was nice to have the ability to perceive the tyres… [and get] a little bit of an understanding as to the place the automobile is at.
“I did 85 laps within the morning, which is superb. Final yr we had a worse begin to testing so contemplating this can be a new algorithm it’s higher than up to now.
“Nonetheless persevering with to get as a lot mileage and data on this engine and the automobile on the aero aspect.”
At McLaren, Oscar Piastri managed 48 laps earlier than his day was curtailed by a fuel-system downside.
Technical director efficiency Mark Temple mentioned: “The automobile may be very complicated so we determined to carry it again and strip it down to grasp the place it was coming from.”
Mercedes once more impressed, with George Russell and Kimi Antonelli setting the 2 quickest occasions and finishing 168 laps between them on what was their final day of testing.
Groups are solely allowed to run on three of the 5 days and Mercedes have reached their allocation.
Russell mentioned: “A really constructive take a look at and we had quite a lot of mileage on the automobile, which was the primary focus of the take a look at.
“The automobile is feeling good to drive, no main points, no porpoising – which is fairly excellent news for all of us, it is going to save us a number of years on the again. All in all a good few days.”
Russell’s reference to porpoising issues an aerodynamic phenomenon that blighted the automobiles from 2022-25. When airflow below the automobile is disrupted a high-speed bouncing might be set in movement.
The brand new automobiles have a special design philosophy so is not going to be affected by it.
“The automobile has been working properly, however it’s not about how properly it really works, it’s about how fast it goes across the observe and we do not actually have a sign of that in the mean time,” he added.
“We’re in a fairly good place and I’m positive issues are going to alter between now and the Bahrain take a look at and I am positive individuals are going to be bringing upgrades to the automobile.”
Crimson Bull are hoping to be again out on Friday. They had been unable to run on Thursday as a result of they had been ready for spare elements.
Lap occasions can’t be thought of consultant of efficiency at what has been dubbed a “shakedown” take a look at, as groups don’t reveal what programmes they’re working and gas load, engine modes and tyre compounds all make main variations to lap occasions.
There are two additional pre-season checks, in Bahrain on 11-13 and 18-20 February, earlier than the opening grand prix in Australia on 6-8 March.













