Jenson Button pits after reporting a brake problem. It's now only the McLaren driver and Ferrari's Fernando Alonso who are in the pits. Everyone else is out and about focusing on their long runs.

Image source, Mercedes

Mercedes:, external Pit wall keeping a close eye on the stops and practice starts! Imagine being in those seats this weekend!

Jenson Button's session takes another twist: "Something's not right at the side of my brake pedal."

Allan McNish
BBC Radio 5 live analyst in Abu Dhabi

"I thought Fernando Alonso and Ferrari was a match made in heaven, but ultimately it didn't quite deliver. I think Sebastian Vettel will bring a fresh approach to Ferrari and they will feel a little bit lighter. But ultimately it is going to be quite a bit of hard work and quite a bit of time before they're back challenging Mercedes, who are a long way up the road. He's going to need his three-year contract."

Jenson Button goes eighth quickest with his first run on the super-soft tyres. The McLaren driver is desperately trying to make up for lost time which he lost at the end of the last session and beginning of this one. He's 1.4 seconds off the pace and seven tenths shy of his team-mate Kevin Magnussen.

Adrian Ray on Facebook:, external How can someone say that this season has been boring just because it has been dominated by Mercedes? This has been one of the most exciting seasons for a long time with fierce battles going on throughout the pack let alone the tension and drama of the Lewis/Nico battle. Excellent stuff.

Lewis Hamilton has headed back out on the super-soft tyres for a long run. The team will want to get an idea of how long they last as they plan their race strategy.

Tom Clarkson
BBC F1 pit-lane reporter

"There's some head-scratching over at Ferrari as they try to work out how to turn Fernando Alonso's car back on."

James Allen
BBC Radio 5 live commentator in Abu Dhabi

"They were going to make some changes to Yas Marina Circuit after complaints about how hard it was to overtake, but then the introduction of two DRS zones made it, if not easy, then easier."

With 40 minutes to go, Fernando Alonso's Ferrari is back in the garage so his mechanics can get to work fixing it.

Nico Rosberg and Lewis Hamilton are still going at it. Both go fastest on their second hot lap, but still Hamilton edges it. The Briton's time of 1:42.113 is 0.083 seconds quicker than Rosberg.

Britain's Will Stevens is currently 19th and last of those who have set lap times - Fernando Alonso hasn't done so after stopping out on track. Stevens' best lap is a 1:48.269, which is 6.1 seconds off the pace. He's 2.7 seconds adrift of Caterham team-mate Kamui Kobayashi.

Image source, McLaren

McLaren:, external A brilliant effort by the mechanics gets Jenson's car out before the halfway point of the #FP2 session.

Nick Bennetts:, external Romain Grosjean being given a 20-place grid penalty for the final race of the season pretty much sums up his season.

Nico Rosberg goes quickest with a 1:42.303, but his time at the top doesn't last long as Lewis Hamilton pips him with a 1:42.159. Both those times were set on the super-soft tyres. Their closest challenger is Kevin Magnussen's McLaren in third, 0.736 seconds off the pace.

Andrew Benson
Chief F1 writer in Abu Dhabi

"Costs - and the related issue of engines - have been a talking point all year. With the teams currently arguing over the wishes of some to allow some in-season engine development, Red Bull team boss Christian Horner has proposed another wild-card idea.

"Two weeks after suggesting in Brazil that F1 should consider going back to the old V8s, now he is talking about a 'new engine'. 'If we kept the V6s,' he told BBC Sport, 'we could go twin turbo, which would address the noise issue. Perhaps a standard Kers and some standard components and then we could have an engine that was more affordable for all the teams. That is our idea, but I'm sure one of our competitors won't agree'."

Image source, Getty Images

Red Bull's Daniel Ricciardo goes third quickest on what was his third lap on the super-soft tyres. The Australian did a cool down lap on the second tour, lapping around the two-minute mark before going again.

Lewis Hamilton heads out on the super-softs. He asks if this is a one lap tyre and is told that he could potentially get three laps based on what others have done so far.

James Douglas: "I'm sorry but I can't hope Lewis Hamilton wins the championship on Sunday until he can learn to come 2nd with grace. Being able to smile and be magnanimous in defeat is not a sign of weakness. Better to own up to your own short comings rather than blame everyone else."

Image source, PA

Sebastian Vettel bolts on the super-soft tyres and goes quickest with a 1:42.959. However, he's just 0.013 seconds quicker than the Mercedes of Nico Rosberg, who set his time on the slower soft tyre.