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The third day of Formula 1 shakedown testing at Circuit de Barcelona-Catalunya saw Mercedes emerge as the dominant force, with both Andrea Kimi Antonelli and George Russell topping the timesheets while completing the highest number of laps. The Silver Arrows demonstrated impressive reliability across Wednesday’s running, with Russell clocking 92 laps during the morning session and Antonelli adding substantial mileage in the afternoon. Six teams participated in the day’s proceedings, with Lando Norris making his first appearance of the week for McLaren. The day was not without its complications, as multiple red flags disrupted the running and several teams continued to battle technical challenges that have plagued the pre-season testing programme.
Russell sets the benchmark in morning running
George Russell demonstrated Mercedes’ W16 capabilities during the morning session, establishing himself as the clear pace-setter with a lap time of 1:17.580 on soft compound tyres. The British driver’s performance went beyond raw speed, as he methodically worked through the team’s test programme to complete 92 laps before handing the car over to his rookie teammate. The mileage accumulation proved particularly valuable for Mercedes’ engineering team, providing crucial data points across long-run simulations and setup variations. Russell’s comprehensive morning allowed the team to explore different mechanical configurations and tyre allocation strategies.
Franco Colapinto secured second position in the morning timesheet for Williams after completing 56 laps, though he remained well adrift of Russell’s benchmark. Norris slotted into third after 33 laps in his first McLaren running of the week, while Red Bull junior Arvid Lindblad registered the fourth-fastest time for Racing Bulls with 61 laps completed. The session encountered two red flag interruptions, both caused by Haas drivers Oliver Bearman and Nico Hülkenberg, limiting their running to just 21 and 5 laps respectively.
Antonelli leads productive afternoon session for Mercedes
Andrea Kimi Antonelli reinforced Mercedes‘ dominance when he emerged as the fastest driver in the afternoon session with a lap of 1:17.362. The 18-year-old Italian, who replaced Lewis Hamilton in the team’s 2025 lineup, showcased his adaptation to the Silver Arrows machinery by not only setting the quickest time but also completing the highest number of laps during the final four hours of running. His performance provided Mercedes with a complete day of data gathering, with both drivers contributing to what became the most productive testing day for any team present at the Circuit de Barcelona-Catalunya.
The afternoon session allowed several teams to recover from morning setbacks. Hülkenberg managed to salvage Haas’ day by adding 63 laps in the afternoon despite the earlier technical trouble that had limited him to just five completed tours before lunch. The German’s extended running proved crucial for the American team’s data collection efforts.
McLaren’s cautious approach limits Norris mileage
Lando Norris finally got his first taste of McLaren’s MCL39 on Wednesday, but the Woking-based team adopted a conservative strategy that restricted the British driver’s track time. Norris improved his lap time in the afternoon session to 1:18.307, yet he didn’t emerge from the garage until approximately 16:30 local time. This delayed appearance meant McLaren accumulated just 77 laps across the entire day, significantly fewer than several rival operations. The limited running suggests McLaren may have encountered minor technical concerns or elected to prioritize quality over quantity in their testing approach.
Despite the reduced mileage, Norris provided valuable feedback on the car’s behaviour and helped the engineering team validate baseline setup directions ahead of the season opener. The team’s measured approach contrasted sharply with the aggressive testing programmes run by Mercedes and other competitors.
Lindblad completes marathon day for Racing Bulls
Arvid Lindblad endured the most demanding schedule of any driver present, completing an exhausting 119 laps across both sessions in the VCARB 02. The Red Bull junior driver’s substantial mileage provided Racing Bulls with extensive data, though his day included one red flag interruption that temporarily halted proceedings. Lindblad registered the seventh-fastest time overall, finishing behind Colapinto, Pierre Gasly, and Bearman in the combined classification.
The young driver’s endurance test demonstrated Racing Bulls’ focus on gathering comprehensive baseline information from their car. His marathon stint offered the team crucial insights into long-run tyre degradation patterns and fuel load effects that will prove invaluable when the competitive season begins.
Technical troubles continue for several teams
The third test day highlighted ongoing reliability challenges for multiple outfits. Audi encountered repeated problems throughout the day, though Hülkenberg’s afternoon recovery run partially offset the morning’s difficulties. Red Bull Racing remained absent from proceedings following Isack Hadjar’s crash at the conclusion of Tuesday’s running, with the team working to repair the damaged RB21 chassis. Aston Martin continued their transportation delays, with the team flying their AMR25 to Spain in hopes of beginning their test programme on Thursday.
Williams opted not to participate in Wednesday’s running, while Ferrari and Cadillac had scheduled rest days as part of their planned testing rotation. The varied participation levels across the grid reflected different testing philosophies and the logistical challenges of the shakedown programme.
Testing continues with uncertain grid for remaining days
The Barcelona shakedown programme continues with teams managing varied schedules and technical situations. Aston Martin’s late arrival means they face compressed testing time to complete their baseline work, while Red Bull’s repair efforts will determine when Max Verstappen and Liam Lawson can resume running. Mercedes’ productive Wednesday positions them well as teams prepare for the season-opening race, with both drivers contributing valuable data across different compounds and fuel loads. The unofficial nature of these times means little in terms of competitive order, but the mileage differential between teams could prove significant when racing begins in earnest.
