Day Three of F1 pre-season testing at Barcelona was effectively written off after a snowstorm descended on the Circuit de Catalunya.
F1's pre-season testing schedule is set to remain unchanged despite Wednesday's running being written off due to wintery conditions in Barcelona.
Sebastian Vettel set the Day Two pace ahead of Mercedes as freezing temperatures and snow compromise teams' running.
Fernando Alonso and his McLaren bosses have given a thumbs-up to the team's new engine partnership with Renault.
Daniel Ricciardo set the pace on a fast but difficult day for the F1 teams as pre-season testing began in Barcelona.
Mercedes and Ferrari are "working as one team these days", according to Christian Horner, as F1's politicising kicked off at winter testing.
Toto Wolff declared himself content with the start world champions Mercedes made on day one of winter testing in Barcelona.
Fernando Alonso suffered a difficult start to winter testing in Barcelona as he spun into the gravel inside the opening hour.
Toro Rosso have officially unveiled their first car since joining forces with Honda for the 2018 season, the STR13.
F1 2018 will burst into action when winter testing begins on Monday with the threat to Mercedes' recent domination the overriding focus of attention.
Lewis Hamilton believes F1 2018 is set to play host to a "tougher battle" for supremacy between the sport's 'Big Three' teams.
Ferrari have targeted their first Formula 1 title in a decade after unveiling a striking 2018 car, the SF-71H.
Lewis Hamilton and Valtteri Bottas have put the first miles on Mercedes' W09 car at the world champion's Silverstone shakedown.
Fernando Alonso, Valtteri Bottas and Max Verstappen are among the drivers to have chosen new-look crash helmet designs for 2018.
Valtteri Bottas is expecting Ferrari and Red Bull to get even closer to Mercedes in the battle for the world titles in 2018.
Are McLaren about to reveal another new-look livery when their 2018 car, the MCL33, is revealed on Friday?
Renault have launched their striking 2018 car, the RS18, as the team aim to take the next step towards the front of Formula 1.
Sauber have unveiled their first car since teaming up with Alfa Romeo, with the team aiming for a much-improved 2018 season in the C37.
Daniel Ricciardo has put the first laps on Red Bull's new RB14 challenger in the team's filming day at Silverstone.
Red Bull have released pictures of their 2018 car, the RB14, they hope will lead them back into Formula 1's title race.