Ferrari, Lotus and Verstappen continue to impress, but there's an ominous warning in the lap times from Mercedes
Ferrari maintained their fine early-season form on the first day of the Barcelona test while McLaren's woes continued.
Susie Wolff was involved in a crash during her outing for Williams in Barcelona after a collision with Felipe Nasr.
McLaren’s winter woes have continued after the team were forced out of Day One at Barcelona after just 21 laps.
Lewis Hamilton’s 2015 preparations have suffered a setback after illness forced him to sit out day one in Barcelona
Williams test driver Susie Wolff will drive the team’s 2015 car, the FW37, on the first day of F1’s second pre-season test.
McLaren have geared up for the second test with their new MP4-30 in Barcelona by conducting a pair of filming days at Barcelona.
Sky Sports Online will once again be providing live commentary from dawn until dusk of all eight days of pre-season testing at the Circuit de Catalunya.
Force India have revealed they will run their 2014 car at the first Barcelona test next week while further development work is carried out on the VJM08.
Your one-stop shop for the story of 2015's winter testing schedule.