Video: F1's big hitters' contrasting fortunes Whether you look at the headline times or the news headlines themselves, there's no escaping the fact that Mercedes dominated the first week of pre-season Formula 1 testing 1582321338 F1

Haas explains cause of Magnussen's tyre failure Haas driver Kevin Magnussen's day-ending crash early on in Friday afternoon's pre-season Formula 1 test session at Barcelona was triggered by a broken wheel spacer 1582313398 F1

Pirelli to trial Zandvoort tyre in second F1 test Pirelli has asked Formula 1 teams to try a special Zandvoort prototype front tyre in next week's second Barcelona test, ahead of its possible deployment at the Dutch GP 1582305308 F1

Another Mercedes 1-2 on final day of first test Mercedes ended the first week of Formula 1 pre-season testing quickest, with Lewis Hamilton completing a 1-2 on the timesheets as team-mate Valtteri Bottas's 1m15.732s Friday morning lap proved unassailable 1582305016 F1

FIA satisfied that Mercedes DAS system is safe The FIA has said it is fully satisfied that Mercedes' new dual-axis steering (DAS) system is safe, despite the unusual movement of the steering wheel on its Formula 1 car 1582298016 F1

Bottas has known about DAS for "nearly one year" Valtteri Bottas believes it will be hard for teams to copy Mercedes' novel dual-axis steering Formula 1 concept, saying he first heard about its development almost one year ago 1582294979 F1