Nico Rosberg beat the Ferraris to the fastest time in Malaysia first practice, but Lewis Hamilton was sidelined by engine trouble.
The action resumes at Sepang with Friday's second session when Lewis Hamilton will hope to get his weekend back on track.
Follow the story of opening practice from Sepang as Alonso returned to action and Hamilton hit engine trouble.
Sauber exile Adrian Sutil has joined Williams as the Grove team’s new reserve driver for the 2015 season.
Daniel Ricciardo has blamed the war of words between Red Bull and engine partner Renault on “frustration”.
Jenson Button says McLaren will still be at the back in Malaysia, despite predicting a good gain in performance.
Hamilton and Rosberg ramp up the pressure on Ferrari by suggesting that the Scuderia are capable of challenging Mercedes.
Nico Rosberg has revealed that he wears a woman's sanitary towel inside his crash helmet to absorb sweat.
The apparent contradictions and inconsistencies between what McLaren and Fernando Alonso said happened in his crash.
Fernando Alonso has said that locked steering rather than a gust of wind caused his testing accident in Spain last month
Valtteri Bottas says he is pain free and won’t require surgery on a back injury which kept him out of the Australian GP.
Fernando Alonso and Valtteri Bottas have been cleared to race in this weekend's Malaysia Grand Prix.
A disappointed Nico Rosberg has admitted that it “feels wrong” that his home German GP will not take place this season.
John Watson says F1 teams need to pull together for the good of the sport as it can’t survive with “just four big teams”.
Renault have accused Red Bull's Adrian Newey of “lying” and denied their engine is solely to blame for RB11's troubles.
Fernando Alonso will face the media on Thursday, before Renault and Red Bull square off in Friday's press conference.
Lewis Hamilton says it would be unfair if F1’s current technical regulations were amended in order to curb Mercedes’ current domination.
Fernando Alonso is bracing himself for a “tough” weekend in Malaysia as he embarks on his F1 comeback at Sepang.
The big topics of debate ahead of this week's race at Sepang as Mercedes look set to dominate again & Alonso returns.
Lewis Hamilton hopes his new deal with Mercedes will be completed before this weekend’s Malaysia Grand Prix.
Charting the public rise in tensions between Red Bull and Renault over the past 12 troubled months.