Sainz took over MCL34 from teammate Lando Norris – who completed the first day on Tuesday on the top, despite having stopped twice on the highway – on Wednesday morning and went faster in his first timing to the end of the first hour with 1m18.878  His subsequent upgrade led him to mid-night before he set his first session at 1m17.144s to a larger C4 connection for about an hour and a quarter for the session.
Nico Hylkenberg (Renault) Niko Hulenkenberg (1m17.393) set on the final day of the first test last week and left Sainz – who also called the first red flag of the day when he stopped at the exit from the pitlane – a full second at the head  Ferrari driver Vettel was the second fastest, but was limited to 40 laps on Turn 3 for just over two hours in the session.
The four-time champion has not long improved his fastest time of 1
Ferrari said an accident that required a 40-minute stopover when the car was restored and the bar was rebuilt was the result of a mechanical problem. Later he added: "We anticipate that the car will not go on track for several hours."
The car must be expelled in the second half of the day by Vettel's teammate Charles Leclere. The second test continued, as Max Verstappen completed 69 circles and set the third-fastest time. Once again, the team decided to operate exclusively on the C3 bus.
Valtteri Bottas was limited to only seven laps on Tuesday after the oil pressure questioned Mercedes to change the engine to W10 as a safety precaution, but at the beginning of the second day, Finn was much better.
Bottas was fourth in order with the fastest time of 1m18.941s and recorded 75 laps, most of any driver.
Morning ahead of Alfa Romeo driver Kimi Raikkonen and Racing Point Sergio Perez. The trio was divided into just 0.142 seconds in the middle of the package.
Robert Kubica climbed to the eighth place for Williams in the last four minutes of the session with a 1m19.367s circle on the C4, waiting for Haas's Romain Grozhan –
Daniel Riccardo was close to the three seconds left on the top of the order , as Renault decided to focus on the long term. on C2 at an early stage, and then faced a 13-lap limited to the C3 bus before the first red flag to stop Sainz in.