Follow live coverage of the first pre-season test from Circuit de Barcelona-Catalunya with F1i.
A number of new cars were launched in the pit lane on Monday morning, with Haas rolling out its new challenger as well as reveals from Mercedes, Force India and Renault.
When the track action went live at 9am, reigning champion Lewis Hamilton was first on track in the Mercedes and was soon joined by Daniel Ricciardo in Red Bull's new RB12. The new Toro Rosso also turned its first laps of 2016 in the hands of Carlos Sainz.
You can follow live coverage of both pre-season tests - including live timing - on F1i's live page here, while there are also galleries of all of the new cars.
Running will take place from 0900-1300 and 1400-1800 every day throughout the two tests, with the first taking place from February 22-25 and the second being held from March 1-4.
Follow live coverage and timing from pre-season testing here
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