Felipe Massa set the fastest time of the post-Silverstone Grand Prix two-day test with the best time on Tuesday, while Jules Bianchi topped the sheets on Wednesday in the Ferrari.
Massa recovered from his early exit in the British Grand Prix - when he crashed out in an incident with former teammate Kimi Raikkonen - to set the fastest time of the test with a lap of 1m35.242s.
Then on Wednesday, Jules Bianchi, who had been given the opportunity to drive the Ferrari car as a member of the academy, took advantage of the chance by leading the times with a lap just two thousandths-of-a-second slower than Massa the previous day.
Trailing behind Massa's time on the Tuesday were the familiar names of Daniel Ricciardo and Nico Rosberg, with Adrian Sutil in the Sauber posting the fourth quickest time. Then it was Bianchi in fifth - this time driving in the Marussia car.
He posted the most laps of the day with 108 and he was the only driver to feature on both days of the test, albeiit for two separate teams. Important mileage for him in the long run.
Chances for young drivers
With these in-season tests, of which there were four brought in for this year, many young drivers are given an opportunity to get some time in a Formula One car under their belts to gather long-term experience.
Driving on day one for McLaren was their young driver programme member Stoffel Vandoorne. The Belgian is currently racing in GP2 and has one race win to his name this season. The 22-year-old finished runner-up to Kevin Magnussen in Renault 3.5 in 2013 and was sixth fastest on the Tuesday of the Silverstone test.
Sergio Perez of Force India and Jean-Eric Vergne of Toro Rosso posted the seventh and eighth fastest times of the day, with Pastor Maldonado ninth in the Lotus.
It was the turn of the Lotus and Ferrari cars to test the Pirelli tyres out for one session of the day, as scheduled in so each team takes a turn throughout the season.
Pedro de la Rosa took the Ferrari seat but was 2.746s behind Massa. Will Stevens, a 23-year-old British driver who races in the Formula Renault 3.5 series, rounded off the group on day one.
In Wednesday's slower session, Daniil Kvyat trailed Bianchi, followed by Magnussen in the McLaren. Giedo van der Garde - who drove for Caterham last season - featured in fourth for Sauber with Silverstone race-winner Lewis Hamilton fifth.
Sixth was star man of the weekend Valtteri Bottas with Max Chilton, who was testing tyres for Pirelli, in seventh. Daniel Juncadella was making a test appearance once again for Force India and was eighth, ahead of Vettel who, like Chilton, had been allocated tyre testing.
Charles Pic in the Lotus was 6. 644s seconds off the pace at the back, but Colombian Julian Leal the was last with a gap of +7.373s on Bianchi.
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