"For the moment, I'll look back over these six days with my engineers, what I liked and what I didn't like, and try to put together the best compromise for my last day in the vehicle on Friday".
Vettel's young Monegasque team mate Charles Leclerc was testing the vehicle on Thursday with the four-times world champion German, who was not hurt in Wednesday's incident, due to return for the final day on Friday.
Despite this Leclerc remained happy with the efforts from Ferrari, after a wheel rim issue sent team-mate Sebastian Vettel into the barriers at the high-speed Turn 3 and sacrificed a large portion of Wednesday's running.
Speaking about his lap time, Leclerc added: "Obviously, I think as every team, we are not flat out".
"It hasn't changed since day one, to be honest".
"I've still got a lot to learn, but up until now, I can say I'm satisfied".
His 138 laps were second to Williams rookie George Russell, who led the field with 140 laps on the day.
Sebastian Vettel's Ferrari is removed from the track (L), and the driver leaves the scene (R).More news: ‘Space Jam 2’ Scheduled To Be Released July 16, 2021
More news: FRA pulls funds from California high speed project
More news: Gun battle with militants kills 4 Indian soldiers, civilian in Kashmir
But while the vehicle was checked in the garage, the team assured fans that Vettel was fine with a short post on Twitter.
"We need to unlock more from the new package to be able to compete with them", the Finn said.
Red Bull's Pierre Gasly swiftly lowered the mark at 1min 17.91secs on medium compound C3 tyres. His auto went through the gravel and hit the barrier head-on.
Another red flag came out when Lance Stroll's Racing Point vehicle stopped in a straight.
Ferrari driver Charles Leclerc of Monaco takes a curve during a Formula One pre-season testing session at the Barcelona Catalunya racetrack in Montmelo, outside Barcelona, Spain, Thursday, Feb. 28, 2019.
Carlos Sainz, in a McLaren, was fastest, timing 1:17.166 off 130 laps with Mexico's Sergio Perez third fastest for Racing Point in 1:17.962 having completed 88 laps.
His benchmark - comfortably the quickest of pre-season testing - was just six-tenths down on the circuit record, the pole position time set by Lewis Hamilton for last May's Grand Prix.