Formula 1 2026 is underway -- under a cloud of secrecy with the initial preseason test in Barcelona taking place behind closed doors. Here are the fastest laps so far.

The RB7, which completed demonstration laps at the bp Adelaide Grand Final, was handed to Feeney and Brown at The Bend Motorsport Park last November. Feeney and Brown both sat in the car in Adelaide during Grand Final weekend, in preparation for The Bend laps.

Kimi Antonelli topped the timesheet from Mercedes team-mate George Russell; Lando Norris was at the wheel for McLarens first outing; watch F1 2026: Barcelona Shakedown with Ted Kravitz and guests every evening this week on Sky Sports F1 at 9pm,

Mercedes have continued their strong showing during Formula One’s test in Barcelona ahead of the new 2026 season. Teams are currently participating in a five-day behind-closed-doors test event in Barcelona with new regulations coming into place for the new season.

Stoppages aren’t a guaranteed sign of a problem. Teams undertake a fuel run-out test during pre-season testing to verify that the fuel pump can scavenge all the fuel in the tank. Normally these happen near the end of the first or second session of a day to minimise the disruption for others.

F1 2026 pre-season testing live: Day one lap times revealed in Barcelona - Follow live F1 action from the Circuit de Barcelona-Catalunya with the first glimpse of the 2026 cars on the racetrack

Aston Martin made its first appearance at this week's preseason test at the Circuit de Barcelona-Catalunya after completing a handful of laps in the final hour of the penultimate day.

Lap times from the first day of pre-season testing in Barcelona ahead of the 2026 Formula 1 campaign have been leaked on social media. This week, teams are ramping up their pre-season preparations as they begin testing their 2026 cars at the Circuit de Barcelona-Catalunya.