Lewis Hamilton admits Mercedes have a "mountain to climb" after a difficult three days of pre-season testing.
Sergio Perez set the fastest time on the final day of pre-season testing as Red Bull underlined their status as favourites going into the opening race of the season.
Charles Leclerc says Ferrari have got "work to do" before next weekend's season-opening race if they are to compete with a "very strong" Red Bull.
George Russell has admitted he doesn't expect Mercedes to be able to compete with Red Bull and Ferrari for victory at opening race of the season in Bahrain next weekend.
Mercedes' preparations for the new Formula 1 season took a major hit on the second day of pre-season testing after breaking down on track in Bahrain
The quickest laps in testing by driver and team - plus the most laps completed as 2023 pre-season concludes in Bahrain.
Reigning world champion Max Verstappen topped the timesheet on the opening day of pre-season testing in Bahrain as Red Bull received "positive signs" from their new car.
Max Verstappen ensured a familiar-looking timesheet to kick off Formula 1 2023's pre-season test by out-pacing Carlos Sainz on the opening morning.
Formula 1 2023 is officially go with a three-day pre-season test concluding in Bahrain. Recap live updates from the track and watch all the video.
Find out everything you need to know about Formula 1 pre-season testing and how to watch and follow it on Sky Sports.