Mercedes driver Nico Rosberg set the quickest time during the first practice session for the returning German Grand Prix at Hockenheim.
Rosberg’s time of 1:15.517, on the Super Soft tyres, was over a second quicker than his pole position time from two years ago, when Formula 1 last visited the circuit.
Mercedes team-mate Lewis Hamilton was second fastest, 0.326s adrift of Rosberg.
Ferrari collected third and fourth, with Sebastian Vettel ahead of Kimi Räikkönen, albeit over a second down on compatriot Rosberg.
Max Verstappen was fifth, with Daniel Ricciardo sixth, in front of McLaren duo Fernando Alonso and Jenson Button, the Briton complaining of inconsistent braking.
Toro Rosso drivers rounded out the top 10, with Daniil Kvyat edging out team-mate Carlos Sainz Jr.
Marcus Ericsson placed an encouraging 11th for Sauber as it continued to evaluate a new front wing, while Valtteri Bottas and Felipe Massa took 12th and 13th for Williams.
Bottas spun his FW38 at the hairpin but was able to recover and continue his programme.
Haas pair Romain Grosjean and Charles Leclerc sandwiched the Force Indias of Nico Hülkenberg and Sergio Pérez, as Kevin Magnussen took 18th for Renault.
Grosjean suffered a half spin exiting Turn 8 during the closing stages of the session and ran through the grass and gravel.
Felipe Nasr took 19th, in front of Esteban Ocon, who complained of power steering issues with his Renault, leaving Manor pair Rio Haryanto and Pascal Wehrlein to prop up the order.