Bottas puts Mercedes on top but Hamilton says still 'not perfect'

Valterri Bottas took his Mercedes to the top of the time charts once again on the final day of pre-season Formula One testing but teammate and world champion Lewis Hamilton warned performances were "not perfect".

Two weeks out from the season-opener in Melbourne, Bottas, runner-up to Hamilton in the world championship in 2019, clocked a best run of 1min 16.196sec off a total of 79 laps.

The Finn also finished the two sessions of winter testing with the fastest overall time of 1:15.732, the only driver to dip below the 1min 16sec mark. Red Bull's Max Verstappen and Renault's Daniel Ricciardo filled out the top three on Friday with Hamilton in fifth.

"On the whole, these tests were good but not perfect," admitted Hamilton, who this season eyes equalling the record of seven world titles held by German legend Michael Schumacher.

"We have had a lot of problems that we are trying to solve," he added in reference to the need for the team and clients Williams having to change power units after breakdowns.

"We will see how long it will take to resolve them, but it is better to discover these things in tests." Mercedes put in most laps in Barcelona with 903 ahead of Ferrari (844) and McLaren (802).

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