Still no timed laps from either of the Mercedes or the Ferraris. Kimi Raikkonen is out there, but suffers a puncture and is told to box. Nico Rosberg is strapped in and looks set to head out.

Image source, Getty Images

There was a new face in the paddock in 2007 as Lewis Hamilton took part in his first Formula 1 season. Here he is in practice for the 2007 Malaysian Grand Prix.

Hamilton finished fastest in third practice, qualified fourth and went on to finish second, behind then team-mate Fernando Alonso.

Felipe Nasr goes for a trip through the gravel at Turn 11 but he is able to get his Sauber back on track. Twelve drivers have posted times with 20 minutes of the session gone.

If Lewis Hamilton is worried about the Ferraris he is not showing it. He is keeping out of the heat in the Mercedes garage at the moment and in no rush to head out.

Red Bull's sister team, Toro Rosso, are third and fourth fastest at the moment with Carlos Sainz posting a 1:42.078 and his team-mate Max Verstappen a 1:42.361.

Image source, Getty Images

There's certainly plenty of fans showing their support for Daniel Ricciardo in Malaysia. He still holds the second fastest time in this session.

Image source, Getty Images

Some news related to Red Bull from Friday and Renault say they are considering pulling out of F1 following criticism of its engines.

Renault engines powered Red Bull to four successive world championships, before Mercedes won in 2014. However, the manufacturer has come in for criticism since Mercedes dominated the season-opening Australian Grand Prix on 15 March, with Red Bull finishing a lap down on winner and world champion Lewis Hamilton.

"We are looking at a lot of options, including getting out of Formula 1 if it's bad for Renault's reputation," says the team's chief, Cyril Abiteboul.

The French firm, which supplies engines to Red Bull and Toro Rosso, is also contemplating buying a team and becoming a constructor again.

Image source, Getty Images

Daniel Ricciardo and Daniil Kvyat limbered up for this weekend's race by playing squash with world number one Nicol David, and it may have done the trick after a decent showing on Friday.

The RB11 displayed improved driveability compared to Melbourne and Kvyat's best lap of 1:42.055 saw him finish the fourth fastest driver of the day while Ricciardo was P10.

They were still not without their troubles, though, as Kvyat struggled with upshift problems in the afternoon session, while Ricciardo had an engine problem. Ricciardo is already on to his second engine after a problem in practice back in Australia.

Will Stevens set his lap time on the medium tyres, with everyone else out on hards.

The Red Bulls are out and Daniel Ricciardo is briefly the new pacesetter after a 1:42.045, until his team-mate Daniil Kvyat pops up with a 1:41.980.

Will Stevens puts the first time on the board with a 1:49.397.

Considering the past few hectic months Manor have had to get on the grid, they will be pleased with how things went on their first appearance of 2015 yesterday.

Stevens managed to get inside 107% of Nico Rosberg's best lap, with his best 105.93% off, while his team-mate Roberto Merhi was just outside at 107.45%. Given the team are likely to find more time today, promising stuff ahead of qualifying.

Allan McNish
BBC Radio 5 live analyst in Sepang

"Wakey wakey, FP3 session is under way. @bbcf1"

Andrew Benson
Chief F1 writer in Sepang

"Formula 1 is poised for its first rule change of the new season, with the return of the allowance of engines per driver to five. That limit was reduced by one for this season as one part of the turbo hybrid engine rules that was intended to keep costs down. But it has had a dire effect on practice sessions, with teams doing noticeably less running.

"They have now apparently unanimously agreed to use five, although the rule still needs to go through the official processes before becoming reality."

Tom Clarkson
BBC F1 pit-lane reporter in Sepang

"Interestingly, Jenson Button has had an engine change overnight but he wasn't complaining about any problems in practice yesterday. They found a problem with the ICE (Internal Combustion Engine) overnight. They wouldn't say exactly what the problem was but they have lost one engine for the year."

The track is getting busier as both Lotus's and Jenson Button's McLaren head on out.

Ping goes the green light and one hour of practice is under way. Will Stevens blasts straight out on to the circuit in the Manor.

Image source, Lotus

Lotus: Not long till FP3, your chariots await sirs...Romain Grosjean and Pastor Maldonado.

Followers in the UK, stick on your televisions or pop on the radio, Formula 1 coverage is now live on BBC Two and on BBC Radio 5 live sports extra.

Image source, Getty Images

In the driest Formula 1 year since 1987, the 2013 Malaysian GP was the only race to be affected by rain.

Image source, Getty Images

That searing Sepang heat means tyre management will be crucial this weekend. Drivers struggled for grip on the faster medium tyres on Friday afternoon as temperatures touched 60C.

"We had record track temperatures out there - it was more than 60 degrees on the asphalt," says Nico Rosberg. "You can imagine, we're sitting on the ground and I can actually feel the asphalt through the chassis. The 60 degrees comes straight into the cockpit and it's extremely hot in the car."

Fernando Alonso strolls into the McLaren garage, a huge smile spread across his face, sunglasses on. Its bright and boiling in Sepang, with air temperature currently 33C and track temperature around 60C.