Lewis Hamilton said he had a "good day" after setting the second fastest time in Friday practice at the British Grand Prix.
He was 0.176 seconds slower than pace-setter Carlos Sainz's Ferrari, ahead of McLaren's Lando Norris and Red Bull's Max Verstappen.
Mercedes have introduced a number of aerodynamic upgrades that they hope will reduce their deficit to the pace.
Hamilton said the team had "definitely made an improvement".
A newer server operated by the Mastodon gGmbH non-profit