The final day of the official Formula 1 shakedown test takes place today at the Circuit de Barcelona-Catalunya.
Mercedes will not feature after completing its third day of running on Thursday, with the Silver Arrows having gathered 500 laps worth of data.
Aston Martin also hit the track at last on Thursday and will be looking to gather a full day's worth of data today.
Red Bull face a race against time to repair its RB22 for Max Verstappen, who is yet to feature since Tuesday morning.
It is the final chance for the teams to collect data ahead of the next pre-season test next month in Bahrain.
We will provide you with all of the happenings we can during the day of running, which you can follow in the live updates below!
LIVE: 2026 F1 Barcelona Pre-Season Test - Day 5
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