Kimi Raikkonen ensured Ferrari ended pre-season testing on top of the timesheets by setting the quickest time on the final day in Barcelona.
The Finn posted a 1m17.221s on the Hypersoft tyres, less than two-tenths slower than teammate Sebastian Vettel managed on Thursday, before completing a race simulation as part of a 157-lap total.
Fernando Alonso had a troubled start to his day, stopping at Turn 7 with a turbo problem within the first hour and requiring an engine change.
The Spaniard emerged in the afternoon and would only just fall short of 100 laps setting the second-best time in the final 20 minutes and becoming only the third driver this week to go sub 1m18s.
Carlos Sainz also had a very bad start in the Renault, completing just four laps in the morning before suffering a gearbox problem. Like his compatriot, he would also make up for lost time, doing a short run on the softest compound available in the final hour to jump up to third.
Daniel Ricciardo was having a subdued day for Red Bull, focusing on long runs as his teammate had on Thursday, the Australian would bolt on a set of Supersofts towards the end, however, moving up to fourth.
Haas continued their strong end to testing with Romain Grosjean completing the most laps of any driver, 181, and ending the day fifth overall for the American team.
Mercedes would have a low-key end to the pre-season with Valtteri Bottas taking the team past 1,000 laps over the eight days the only statistic of note. Otherwise, the Finn was sixth with an ominously strong time on the Medium tyre and just over 100 laps to his name.
Teammate and world champion Lewis Hamilton ran in the morning with the 11th best time, the two drivers combined saw the Silver Arrow surpass 200 laps on the day.
Honda would end testing without creating any negative headlines as Brendon Hartley enjoyed another flawless day with 156 laps in P7, just beating Esteban Ocon's Force India by 0.016s.
Charles Leclerc was ninth as the two Williams drivers brought up the representative timesheets with Sergey Sirotkin 10th and Lance Stroll 12th, perhaps not what the British team was hoping for.
