HIGHLIGHTS: Watch all the key moments from final practice ahead of qualifying in Qatar
Formula 1 has never raced in Qatar before, meaning every second of on-track running is crucial for the drivers and teams as they prepare for qualifying and Sunday's Grand Prix.
And the field had their final chance to get to grips with the Losail International Circuit – and fettle their cars – in the third practice session on Saturday.
When the flag flew to end the session it was Mercedes who were looking in the best shape, with Valtteri Bottas leading Lewis Hamilton at the top of the time sheets. Hit play on the video above to see all the key moments from FP3.