The 2026 Formula 1 regulations received their first public test at Barcelona’s Circuit de Catalunya, where all ten teams ran shakedown sessions with modified machinery ahead of the sport’s most significant technical revolution in decades. The three-day test provided crucial track time as teams prepare for sweeping changes to power units and aerodynamics that will fundamentally reshape the competitive order. While current cars dominated the running, the data gathered will prove invaluable as engineers finalise designs for next year’s radically different machines.
Red Bull Racing maximises track time with dual focus
Red Bull Racing approached the Barcelona shakedown with characteristic intensity, splitting their programme between championship preparation and 2026 development work. Max Verstappen completed 89 laps across two sessions, focusing primarily on correlation work for the RB21 while gathering baseline data for next year’s power unit integration. The four-time champion’s running included multiple qualifying simulations and long-run pace analysis.
Liam Lawson took over for the final session, adding 62 laps to Red Bull’s total. The New Zealander’s programme concentrated on familiarisation with Barcelona’s layout and understanding current tyre behaviour across different fuel loads. Red Bull’s engineering team used the sessions to validate simulation tools that will become critical when 2026 components arrive later this year.
The Milton Keynes squad’s shakedown revealed their methodical approach to managing the transition period. While rivals focused exclusively on either race preparation or future development, Red Bull demonstrated their capacity to pursue both objectives simultaneously without compromising either programme.
Ferrari splits resources between Hamilton integration and future tech
Ferrari faced a unique challenge at Barcelona, needing to accelerate Lewis Hamilton‘s integration while maintaining focus on 2026 preparations. The seven-time champion completed 73 laps in the SF-25, his first extensive running at a circuit where Ferrari traditionally shows strong pace. Hamilton’s programme emphasised understanding the SF-25’s characteristics through Barcelona’s varied corner types.
Charles Leclerc contributed 58 laps across two sessions, with his running weighted toward 2026-specific testing. The Monegasque driver evaluated experimental floor configurations and cooling solutions that provide insight into next year’s drastically different packaging requirements. Ferrari’s technical team used sensors to gather thermal data that will inform their 2026 power unit installation.
The Maranello team’s shakedown highlighted the complexity of managing driver transition alongside technical revolution. Hamilton’s feedback on current machinery provided immediate value for the SF-25’s development, while Leclerc’s experimental running addressed longer-term strategic priorities that could define Ferrari’s competitiveness when regulations change.
Mercedes validates new power unit concepts with extensive running
Mercedes logged the highest lap count of any team, with George Russell and Andrea Kimi Antonelli combining for 167 laps across three intensive sessions. The Silver Arrows prioritised power unit validation work, running modified electrical systems that simulate aspects of 2026’s increased electrical power deployment. Russell completed multiple back-to-back comparison runs to assess different energy management strategies.
Antonelli’s involvement proved particularly valuable, with the rookie completing 81 laps to accelerate his adaptation to F1 machinery. The 18-year-old Italian focused on understanding Barcelona’s technical sections while providing feedback on brake-by-wire systems that will become standard in 2026. His lap times consistently improved throughout the test, suggesting rapid progress in his preparation.
Mercedes’ engineering team emphasised data quality over outright performance. The W16 ran with additional sensors monitoring energy flow patterns and thermal behaviour under sustained load. This information feeds directly into 2026 power unit development, where electrical efficiency becomes paramount under the new regulations.
McLaren and Aston Martin pursue contrasting philosophies
McLaren adopted a race-focused approach, with Lando Norris and Oscar Piastri sharing 114 laps of conventional running. The Woking team prioritised setup optimisation for the MCL39, using Barcelona’s characteristics to refine their aerodynamic package before the season’s European phase intensifies. Norris completed extensive work on high-fuel running, simulating race conditions across different tyre compounds.
Aston Martin took the opposite approach, dedicating significant track time to 2026 exploration. Fernando Alonso logged 67 laps with experimental cooling configurations, while Lance Stroll contributed 52 laps focused on understanding how increased electrical deployment affects driving technique. The Silverstone squad’s AMR25 ran with modified rear wing profiles that approximate downforce levels expected under future regulations.
The contrasting philosophies reflect different strategic priorities. McLaren seeks to maximise their current competitive window, having emerged as Red Bull’s primary challenger. Aston Martin acknowledges their 2025 struggles and invests resources in positioning for the regulatory reset that could shuffle the competitive order.
Midfield teams balance immediate needs with future preparation
Alpine, Haas and RB executed focused programmes that addressed both short-term performance and 2026 readiness. Pierre Gasly completed 76 laps for Alpine, evaluating updated floor specifications while testing modified energy recovery systems. Esteban Ocon added 59 laps for Haas, his new team using the sessions to accelerate his integration and gather comparative data on the VF-25’s behaviour.
Yuki Tsunoda contributed 83 laps for RB, the highest individual total from any driver. The Japanese driver’s extensive running included multiple qualifying simulations and race-distance tyre evaluations. RB’s VCARB 02 featured experimental front wing elements that explore concepts potentially applicable to 2026 aerodynamic regulations.
Williams and Kick Sauber completed more modest programmes, combining for 118 laps between four drivers. Both teams prioritised current car development, recognising that 2026 preparation requires resources they cannot yet fully commit while addressing immediate performance deficits.
Technical insights shape 2026 development direction
The Barcelona shakedown provided teams with crucial validation of simulation work that will guide 2026 car design. Power unit manufacturers gained real-world data on thermal management under sustained load, addressing concerns about overheating with increased electrical output. Aerodynamicists gathered information on how reduced downforce levels affect tyre behaviour and mechanical grip requirements.
Several teams reported unexpected findings that will influence design decisions. Cooling requirements for 2026 power units appear more demanding than initial projections suggested, potentially forcing compromises in bodywork packaging. Energy deployment strategies show greater complexity than anticipated, with drivers needing to adapt techniques for managing electrical power delivery through corners.
The test confirmed that 2026 will demand fundamental rethinking of car concepts rather than evolution of current designs. Teams that invested heavily in Barcelona’s shakedown running gained advantages in understanding the challenges ahead, while those prioritising current season competitiveness accepted short-term focus over future preparation.
