Formula 1 teams held a closed‑doors 2026 season shakedown test at the Barcelona circuit, which was not open to the public or media. On the first day, teams focused on basic checks and system testing rather than showing full performance.
Because of major rule and design changes for 2026 cars, teams used the first day to make sure all parts and electronics worked correctly, and to solve small mechanical or software problems early. Only limited running happened on track, and most cars spent time checking brakes, cooling systems, steering, and reliability.
The secretive nature of the test was partly to keep expectations low and avoid showing unfinished cars while teams iron out issues. The first day mostly gave engineers useful data and confidence that the new 2026 cars are functioning, even though fast lap times were not the focus.
Overall, the closed shakedown helped teams prepare for future official testing and the new season ahead.